Panavise EDU-004 User manual

c.b.
EDU-004
EDU-004
pag. 7/8 pag. 2/8
EDU-004
EDU-004
pag. 3/8 pag. 6/8
EDU-004. Electronic Soldering.
Module’s power supply.
The circuit is supplied at 9 V DC, even if it can accept voltage from 5 to 12 V DC. You
have to use a laboratory stabilised power supply like the Cebek FE-103. The circuit's
power supply is done through input terminals, identified with positive and negative
symbols. Regarding the power supply connection you have to respect the indicated
polarity. For the installation, we suggest you to place a switch and a 50 mA fuse on the
positive input.
Required Material.
To make this practice it will be necessary:
.- A soldering iron for electronics, a “pencil” type or soldering station.
.- Cut pincers
.- Fixing pincers
.- Pincers
More over, if you already have a tool to support the printed circuit board and
components, you can se it.
EDU-004. Electronic Soldering.
Step 3. To select components and to insert them, ( ).2nd part
Step . To verify the soldering iron temperature4.
Step . To clean e5 lements.
Step . To start the soldering6.
according to the projected components' height.
Usually, the soldering process is started with integrated circuit and their basis, then
components with lower height like transistors, small capacitors, leds, etc….and
successively till you complete the circuit with higher components.
Concerning the manual soldering, there are several tools to help you to maintain fixed
components on the circuit till you finish the soldering, leaving free both hands. Ifyou
don't have any tool, you will be obliged to use alternative fixing methods.
Some components like resistors allow, through their opening terminals, to be turned
without falling and then to be soldered. Others components require to be obligatory
fixed to the board, for instance, using specific pincers…
The soldering process has to be start when the soldering iron reaches the maximum
operating temperature. A practical way to check it is to move closer the tin to the tip
and if it melts without problems, that means the soldering iron is ready to be used.
Before to start this process, it is highly recommended to check the board side where
components have to be soldered. For industrial circuits, containing a previous tin bath,
you only have to brush the surface to eliminate any impurity or tin wire, invisible at the
sight. For home circuit, a previous cleaning with alcohol or solvent will make easier the
soldering operation.
Regarding the soldering iron tip, before to sold each component you have to check the
its cleaning state. If you have an accumulated excess of tin or resin, you have to clean it
washing the dirty tip part with a wet sponge and with the tip as hot as possible. This
operation has to be constantly and frequently done till you finish the circuit; otherwise
it can be produced failures on the soldering or problems on the soldering process.
The soldering iron tip has to be placed on the union of two elements to solder,
allowing the heat distribution between both. You have to control the heat application;
this one has to be enough to heat both components, but not excessive, to avoid to
damage the component. If you use pincers to support the component's pin, you have
also to take in account the temperature loss due to the pincer's absorption.
When both elements are heated, without removing the soldering iron, you have to
apply the tin on the surface to solder, avoiding to touch the tip. The tin will be melted
and flow between both elements to solder, being distributed on the surface. If this
surface is important (the hole as important as the pin), the tin may have some
Bibliography.
- On Google: Soldering | Soldering station.
- On the internet: www.fadisel.com | www.jbc.com |
www.panavise.com/f/vises/vises_cbholders.html
EDU-004. Electronic Soldering.
The soldering practice includes a board composed by 10 identical circuits' auto cut and
components to assemble them. See the circuit electrical drawing and components map
to easily found their value and their location on the circuit.
The end-user has to assemble and to sold these 10 circuits, the practice of this
repetitive process will insure you the initiation and the improvement concerning the
soldering technique.
Firstly, you have to control the raster of the components present on the circuit, as well
as the acquisition format. For instance, if the resistors' location is supplied in a 15 mm
raster or at the opposite in 10 mm (as the supplied one in this practice).
It will be necessary to cut tem to a suitable size. There are different tools specially
designed for this function, even if generally this preparation is manually done.
Cut or standard pincers, tin and soldering iron as well as a wet sponge will be
necessary tools to start the soldering. A soldering iron support will be highly
recommended to avoid burns o accidents due to a lack of fixing when it is useless.
To cut and remove several circuits, you have to slightly press in opposite ways the
circuit to remove and the following; then you could easily withdraw each piece.
Once inserted on the circuit, each component projects a determined height on the
circuit's basis. Indeed, a diode or an integrated circuit don't have the same height than a
capacitor or a terminal. In order to avoid any disturb during the soldering process and
to use assembly tools, the component insertion won't be done in anarchical mode but
Soldering Practice
Electrical Drawing
LD1
LD2
R4
R3
T2
T1
R1
R2
D1
C1
C2
1/4 W. All Resistors
Vcc VccVcc
R1
10K
T1
BC547
R3
10K
T2
BC547
+
C1
100uF
+
C2
100uF
LD2
5mmled
R2
560
R4
560
LD1
5mmled
Vcc
POWER
1
2
D1
1N4003
GreenRed
Components indication.
Practice Drawings.
Step 1. To prepare the material.
Step 2. To remove the circuit from the panel.
Step 3. To select components and to insert them.
Module´s operating mode.
Once the module supplied, it will start a constant intermittence between the led 1 and
the led 2. The intermittence speed will depend on C1 and C2 capacitors. If you are
using capacitors with lower capacity, the intermittence speed will be higher. At the
opposite, if capacitors offer a higher capacity, the intermittence speed will decrease.
More over, if C1 and C2 have a different value, the intermittence will be asynchronous.
180º
90º
raster
Components preparation and auto fixing.
a.
EDU-004. Electronic Soldering.
Cebek educational modules included in the EDU serial offer several practices to analyse,
experiment and to learn basic knowledge on the studied theme. Nevertheless, their
function is not to make a mini-class on each theme, but to complete and to be used as
basis, as well as to allow to experiment on the theoretical theme evocated by the teacher.
For this reason, we suggest you to use modules form the EDU serial under the
supervision and the direction of a teacher.
Cebek doesn't offer a consulting service as concern the theoretical or the operating
principles concerning the theme deal with the module. It only offers a technical assistance
regarding questions and problems coming from the circuit's internal operating mode.
All Cebek modules included in the EDU serial have a warranty of 3 years as concerning
components and labour man. All damages provoked by external causes (from the circuit),
as well as wrong connections or installations or due to an operating mode no indicated
into the module's documentation won't be covered by the warranty. More over, all wrong
or incorrect handling won't be excluded from the warranty. For any claim, you have to
present the corresponding invoice.
To contact our technical department, you can send a message to , or a
fax :Nº+34.93.432.29.95 or a mail to the following address: CEBEK, c/Quetzal, 17-21,
08014 Barcelona (SPAIN).
[email protected]
Warranty and Do not forget.
Rules and Identification of the EDU serial elements.
To make easier the identification and for a single rule as concern different practices and
educational Cebek modules, all common elements will answer to colour code and to a
shape.
Test Point. (TP).
It allows to connect oscilloscope's or multimeter extremities to read parameters
relating to the practice. According to its colour, it will indicate that the Test Point
(TP) is connected to the positive or to the negative of the circuit, as well as reads
concerning current, voltage, load, etc….
Jumper.
circuit
Red
Conmutator / Switch.
Power supply Current Voltage
Red Blue Yellow Logical
TP. Tension
Yellow
TP. circuit
Black
TP. TP. Courant
Blue
TP Without current or TP AC.
White
Green
It allows to close or open a signal or an electrical circuit
According to the colour of the switch, you can control the voltage, the current
Before to start...
Before to start a practice, it is very important to carefully read its instruction manual as
well as corresponding indications.
You have to do correctly connections in indicated contact points, otherwise measures
depending on these connections will be confuses or wrong.
Do not make connections not indicated in the instruction manual to avoid to damage
the circuit.
If the Led of the power supply “PWR” doesn't light on or if its function suddenly stops,
you have to quickly disconnect the power supply for the device and check there is any
short-circuit as well as the fuse's status.
Even if described practices can be done following instruction manual, we recommend
you to use it under the supervision of a teacher who can advise and bring you a support
(an help) concerning described concepts.
In the circuit, each practice will be delimited by a rectangle with the corresponding
number. One or several experiment(s) can be reported and referenced to this practice.

c.b.
EDU-004
EDU-004
pag. 7/8 pag. 2/8
EDU-004
EDU-004
pag. 3/8 pag. 6/8
EDU-004. Electronic Soldering.
Module’s power supply.
The circuit is supplied at 9 V DC, even if it can accept voltage from 5 to 12 V DC. You
have to use a laboratory stabilised power supply like the Cebek FE-103. The circuit's
power supply is done through input terminals, identified with positive and negative
symbols. Regarding the power supply connection you have to respect the indicated
polarity. For the installation, we suggest you to place a switch and a 50 mA fuse on the
positive input.
Required Material.
To make this practice it will be necessary:
.- A soldering iron for electronics, a “pencil” type or soldering station.
.- Cut pincers
.- Fixing pincers
.- Pincers
More over, if you already have a tool to support the printed circuit board and
components, you can se it.
EDU-004. Electronic Soldering.
Step 3. To select components and to insert them, ( ).2nd part
Step . To verify the soldering iron temperature4.
Step . To clean e5 lements.
Step . To start the soldering6.
according to the projected components' height.
Usually, the soldering process is started with integrated circuit and their basis, then
components with lower height like transistors, small capacitors, leds, etc….and
successively till you complete the circuit with higher components.
Concerning the manual soldering, there are several tools to help you to maintain fixed
components on the circuit till you finish the soldering, leaving free both hands. Ifyou
don't have any tool, you will be obliged to use alternative fixing methods.
Some components like resistors allow, through their opening terminals, to be turned
without falling and then to be soldered. Others components require to be obligatory
fixed to the board, for instance, using specific pincers…
The soldering process has to be start when the soldering iron reaches the maximum
operating temperature. A practical way to check it is to move closer the tin to the tip
and if it melts without problems, that means the soldering iron is ready to be used.
Before to start this process, it is highly recommended to check the board side where
components have to be soldered. For industrial circuits, containing a previous tin bath,
you only have to brush the surface to eliminate any impurity or tin wire, invisible at the
sight. For home circuit, a previous cleaning with alcohol or solvent will make easier the
soldering operation.
Regarding the soldering iron tip, before to sold each component you have to check the
its cleaning state. If you have an accumulated excess of tin or resin, you have to clean it
washing the dirty tip part with a wet sponge and with the tip as hot as possible. This
operation has to be constantly and frequently done till you finish the circuit; otherwise
it can be produced failures on the soldering or problems on the soldering process.
The soldering iron tip has to be placed on the union of two elements to solder,
allowing the heat distribution between both. You have to control the heat application;
this one has to be enough to heat both components, but not excessive, to avoid to
damage the component. If you use pincers to support the component's pin, you have
also to take in account the temperature loss due to the pincer's absorption.
When both elements are heated, without removing the soldering iron, you have to
apply the tin on the surface to solder, avoiding to touch the tip. The tin will be melted
and flow between both elements to solder, being distributed on the surface. If this
surface is important (the hole as important as the pin), the tin may have some
Bibliography.
- On Google: Soldering | Soldering station.
- On the internet: www.fadisel.com | www.jbc.com |
www.panavise.com/f/vises/vises_cbholders.html
EDU-004. Electronic Soldering.
The soldering practice includes a board composed by 10 identical circuits' auto cut and
components to assemble them. See the circuit electrical drawing and components map
to easily found their value and their location on the circuit.
The end-user has to assemble and to sold these 10 circuits, the practice of this
repetitive process will insure you the initiation and the improvement concerning the
soldering technique.
Firstly, you have to control the raster of the components present on the circuit, as well
as the acquisition format. For instance, if the resistors' location is supplied in a 15 mm
raster or at the opposite in 10 mm (as the supplied one in this practice).
It will be necessary to cut tem to a suitable size. There are different tools specially
designed for this function, even if generally this preparation is manually done.
Cut or standard pincers, tin and soldering iron as well as a wet sponge will be
necessary tools to start the soldering. A soldering iron support will be highly
recommended to avoid burns o accidents due to a lack of fixing when it is useless.
To cut and remove several circuits, you have to slightly press in opposite ways the
circuit to remove and the following; then you could easily withdraw each piece.
Once inserted on the circuit, each component projects a determined height on the
circuit's basis. Indeed, a diode or an integrated circuit don't have the same height than a
capacitor or a terminal. In order to avoid any disturb during the soldering process and
to use assembly tools, the component insertion won't be done in anarchical mode but
Soldering Practice
Electrical Drawing
LD1
LD2
R4
R3
T2
T1
R1
R2
D1
C1
C2
1/4 W. All Resistors
Vcc VccVcc
R1
10K
T1
BC547
R3
10K
T2
BC547
+
C1
100uF
+
C2
100uF
LD2
5mmled
R2
560
R4
560
LD1
5mmled
Vcc
POWER
1
2
D1
1N4003
GreenRed
Components indication.
Practice Drawings.
Step 1. To prepare the material.
Step 2. To remove the circuit from the panel.
Step 3. To select components and to insert them.
Module´s operating mode.
Once the module supplied, it will start a constant intermittence between the led 1 and
the led 2. The intermittence speed will depend on C1 and C2 capacitors. If you are
using capacitors with lower capacity, the intermittence speed will be higher. At the
opposite, if capacitors offer a higher capacity, the intermittence speed will decrease.
More over, if C1 and C2 have a different value, the intermittence will be asynchronous.
180º
90º
raster
Components preparation and auto fixing.
a.
EDU-004. Electronic Soldering.
Cebek educational modules included in the EDU serial offer several practices to analyse,
experiment and to learn basic knowledge on the studied theme. Nevertheless, their
function is not to make a mini-class on each theme, but to complete and to be used as
basis, as well as to allow to experiment on the theoretical theme evocated by the teacher.
For this reason, we suggest you to use modules form the EDU serial under the
supervision and the direction of a teacher.
Cebek doesn't offer a consulting service as concern the theoretical or the operating
principles concerning the theme deal with the module. It only offers a technical assistance
regarding questions and problems coming from the circuit's internal operating mode.
All Cebek modules included in the EDU serial have a warranty of 3 years as concerning
components and labour man. All damages provoked by external causes (from the circuit),
as well as wrong connections or installations or due to an operating mode no indicated
into the module's documentation won't be covered by the warranty. More over, all wrong
or incorrect handling won't be excluded from the warranty. For any claim, you have to
present the corresponding invoice.
To contact our technical department, you can send a message to , or a
fax :Nº+34.93.432.29.95 or a mail to the following address: CEBEK, c/Quetzal, 17-21,
08014 Barcelona (SPAIN).
[email protected]
Warranty and Do not forget.
Rules and Identification of the EDU serial elements.
To make easier the identification and for a single rule as concern different practices and
educational Cebek modules, all common elements will answer to colour code and to a
shape.
Test Point. (TP).
It allows to connect oscilloscope's or multimeter extremities to read parameters
relating to the practice. According to its colour, it will indicate that the Test Point
(TP) is connected to the positive or to the negative of the circuit, as well as reads
concerning current, voltage, load, etc….
Jumper.
circuit
Red
Conmutator / Switch.
Power supply Current Voltage
Red Blue Yellow Logical
TP. Tension
Yellow
TP. circuit
Black
TP. TP. Courant
Blue
TP Without current or TP AC.
White
Green
It allows to close or open a signal or an electrical circuit
According to the colour of the switch, you can control the voltage, the current
Before to start...
Before to start a practice, it is very important to carefully read its instruction manual as
well as corresponding indications.
You have to do correctly connections in indicated contact points, otherwise measures
depending on these connections will be confuses or wrong.
Do not make connections not indicated in the instruction manual to avoid to damage
the circuit.
If the Led of the power supply “PWR” doesn't light on or if its function suddenly stops,
you have to quickly disconnect the power supply for the device and check there is any
short-circuit as well as the fuse's status.
Even if described practices can be done following instruction manual, we recommend
you to use it under the supervision of a teacher who can advise and bring you a support
(an help) concerning described concepts.
In the circuit, each practice will be delimited by a rectangle with the corresponding
number. One or several experiment(s) can be reported and referenced to this practice.

EDU-004
EDU-004
pag. 1/8 pag. 8/8
EDU-004
EDU-004
pag. 5/8 pag. 4/8
EDU-004. Electronic Soldering.
The soldering iron.
Among soldering irons, we can identify three different types; the soldering iron, the
soldering and/or desolder station and the SMD soldering station. All of them carry out
the same function, to allow to solder the component on the circuit printed circuit
board. The selection, among these three possibilities, is in accordance with the use.
For laboratories, small assembling lines and for professional uses, it is generally selected
the soldering station and/or the SMD soldering station, according to the used
component. For punctual uses, and without any exigent or continuous performance, it
is recommended to use a standard soldering iron, also named “Pencil”, which is the
most cheaper and portable.
Standard pencil soldering irons are classified according their power, from 6W to 30W,
and they can be basically divided in 5 parts.
It is more important to emphasize the soldering iron tip, the element the more exigent
and where the manufacturer's technology has to be highly efficient. This one has to
distribute the heat concentration just on the tip, and it has also to support the
maximum temperature of the apparatus, to maintain a tip's life as long as possible, and
of course to insure the intact maintaining of its technical characteristics.
The difference between all manufacturers is basically concentrated in this point, the
answer of the heat applied to the tip and its life cycle. Few companies obtain an
excellent qualification.
Each soldering iron allows, with different support systems, to substitute the used tip by
a new one, or to adapt different diameters to adapt the soldering iron to required
soldering operations. The manufacturer offers standard tips and long duration tips for
professional applications.
The other basic element of the soldering iron is the resistor, charged to transform the
electrical current to heat and to drive it up to the tip. Its power will vary according to
the model, higher the resistor is and lower the tin's smelting time is and lower the heat
loss is on the tip between successive soldering operations.
The voltage input to the solder can be with a direct connection to the mains (230 V) or
through a connector to the soldering station; in such case, the used voltage has to be
12 V DC.
The soldering iron maintenance is essential to guarantee a perfect soldering, as well as
to extend the life duration of the tip. You have to avoid shocks on the resistor or on
the tip itself, and to weekly and carefully clean it, removing excess and accumulation of
tin and “resin”.
The cleaning operation has to be always done when the soldering iron is at its optimal
operating temperature, washing the dirty tip part with a wet sponge or with similar
item. Both accessories have to be especially prepared for soldering irons.
0419
Rev.
EDU-004. Electronic Soldering.
difficulties to be completely distributed, due to a lack of heat on it. To solve this matter,
you have to slightly move the soldering iron to supply heat to the rest of the surface
and then make easier its application and complete tin cover.
Step 6. To start the soldering, ( ).2nd part
EDU-004.
The module EDU-004 introduce and indoctrinate the student to the electronic
soldering, offering a specific information to the tin's characteristics, description of the
soldering iron, soldering techniques, practical data for the professional user, etc…
It is composed by 10 printed circuit boards with necessary components to assemble
auto-oscillators circuits composed by two leds. Printed circuit boards includes a
mask to make easier the first soldering operations, and serigraphy to identify the
components' location.
Introduction. Specification of different elements of the electronic soldering, most
popular methods, tin alloys , etc..
Soldering Iron. Types of soldering irons, maintaining, parts of the standard
soldering iron...
The soldering. Description and processes of the electronic soldering. Techniques,
advises and drawing.
www.cebek.com
The Circuit. Description of the practice circuit, functions...
Elements. Work desk, necessary tools, preparation of the material...
Electronic Soldering.
Soldering iron parts
Tip
Tip fixing
Resistor
Handle
Voltage
Input
To heat both parts Tin application
When you apply the tin between the two surfaces, it will appear a half sphere with
different size, according to the application surface. When you completely cover the
area reserved to the soldering, and obviously the part in contact with the PCB, you
have to remove the soldering iron and to wait for the complete tin's cooling.
Do not remove the soldering iron before the complete tin's cooling otherwise you can
provoke a defective soldering named “Cold soldering”.
After the tin's cooling you have to cut the pin excess of the component using cut
pincers specialised adapted to the electronics. You have to cut at approximately 1
myriameter on the tin top.
Step 7. To finish the soldering.
Completed soldering To cut terminals
Troubles and Problems in the soldering (Advices)
1.-You have to solder only when the soldering iron reach the operating
temperature.
2.-The soldering iron tip has to be maintained free of tin excess and/or dirt.
3.-The tip has to be placed between the two elements you want to solder, on the
union point between both.
4.-The tin has to be applied to the surface you want to solder, if you only put it on
top, it could happen a dab soldering.
5.-Do never solder, firstly accumulating the tin on the tip and secondly pouring it on
the circuit (PCB), in order to avoid a cold soldering.
Tin coils
EDU-004. Electronic Soldering.
The Electronic Soldering.
The electronic soldering offers two essential functions, to physically fix a component
and its electrical conductivity with the rest of the circuit.
To obtain these two goals, you have to use the combination between a metal with a
low melting point (between 200º and 400ºC) and a soldering iron to heat it.
When you apply the soldering iron on the metal, this one (who is normally in solid
state) will be liquefied to be distributed along the surface prepared for this operation.
As it is a dense liquid, it will remain around the track or the hole on which it is applied
without overpass on the rest of the circuit.
The Tin.
Soldering types.
The metal used for the electronic soldering is an alloy, basically composed by tin, which
guarantees a correct electrical conductivity. It is economical, and its melting point is
placed on a threshold allowing to use basic soldering irons, avoiding to naturally reach
the temperature for the sate change and it doesn't require voluminous or powerful
melting apparatus.
For other applications, there are conductors metals, like the gold, with optimal
technical characteristics and answering to higher requirements (for space or military
industries, or microprocessor cores, etc…)
The tin used in electronics is supplied in wire format, around coils with different sizes.
It has a colophony cover making easier its handling and with anticorrosion function.
There are different types of tin, for different applications, like electrical soldering, or
plumber soldering; but they are not suitable for electronic applications, due to its
different composition and fluidity.
The soldering can be manual or by machine, this one being standard or by SMD.
The automatic soldering in SMD, where it is necessary a robotised machine applying
mechanism which collects components (normally placed on roll) and place them on a
determined location (coordinate) on the circuit, previously impregnated with paste for
tin in specific points. Finally the machine apply heat to melt the paste and connecting
components with the circuit. This method is used for important quantities.
The standard soldering using machine, with components different than SMD, requires a
manual components insertion, where finally and through wave system, they are
soldered. This system is used for medium or small quantities.
Finally, the manual soldering requires a manual components insertion and a soldering
iron for soldering. It is used for small quantities, normally associated to small
production lines or prototype.
EDUCATIONAL MODULES
For LEARNING and to PRACTISE the ELECTRONICS

EDU-004
EDU-004
pag. 1/8 pag. 8/8
EDU-004
EDU-004
pag. 5/8 pag. 4/8
EDU-004. Electronic Soldering.
The soldering iron.
Among soldering irons, we can identify three different types; the soldering iron, the
soldering and/or desolder station and the SMD soldering station. All of them carry out
the same function, to allow to solder the component on the circuit printed circuit
board. The selection, among these three possibilities, is in accordance with the use.
For laboratories, small assembling lines and for professional uses, it is generally selected
the soldering station and/or the SMD soldering station, according to the used
component. For punctual uses, and without any exigent or continuous performance, it
is recommended to use a standard soldering iron, also named “Pencil”, which is the
most cheaper and portable.
Standard pencil soldering irons are classified according their power, from 6W to 30W,
and they can be basically divided in 5 parts.
It is more important to emphasize the soldering iron tip, the element the more exigent
and where the manufacturer's technology has to be highly efficient. This one has to
distribute the heat concentration just on the tip, and it has also to support the
maximum temperature of the apparatus, to maintain a tip's life as long as possible, and
of course to insure the intact maintaining of its technical characteristics.
The difference between all manufacturers is basically concentrated in this point, the
answer of the heat applied to the tip and its life cycle. Few companies obtain an
excellent qualification.
Each soldering iron allows, with different support systems, to substitute the used tip by
a new one, or to adapt different diameters to adapt the soldering iron to required
soldering operations. The manufacturer offers standard tips and long duration tips for
professional applications.
The other basic element of the soldering iron is the resistor, charged to transform the
electrical current to heat and to drive it up to the tip. Its power will vary according to
the model, higher the resistor is and lower the tin's smelting time is and lower the heat
loss is on the tip between successive soldering operations.
The voltage input to the solder can be with a direct connection to the mains (230 V) or
through a connector to the soldering station; in such case, the used voltage has to be
12 V DC.
The soldering iron maintenance is essential to guarantee a perfect soldering, as well as
to extend the life duration of the tip. You have to avoid shocks on the resistor or on
the tip itself, and to weekly and carefully clean it, removing excess and accumulation of
tin and “resin”.
The cleaning operation has to be always done when the soldering iron is at its optimal
operating temperature, washing the dirty tip part with a wet sponge or with similar
item. Both accessories have to be especially prepared for soldering irons.
0419
Rev.
EDU-004. Electronic Soldering.
difficulties to be completely distributed, due to a lack of heat on it. To solve this matter,
you have to slightly move the soldering iron to supply heat to the rest of the surface
and then make easier its application and complete tin cover.
Step 6. To start the soldering, ( ).2nd part
EDU-004.
The module EDU-004 introduce and indoctrinate the student to the electronic
soldering, offering a specific information to the tin's characteristics, description of the
soldering iron, soldering techniques, practical data for the professional user, etc…
It is composed by 10 printed circuit boards with necessary components to assemble
auto-oscillators circuits composed by two leds. Printed circuit boards includes a
mask to make easier the first soldering operations, and serigraphy to identify the
components' location.
Introduction. Specification of different elements of the electronic soldering, most
popular methods, tin alloys , etc..
Soldering Iron. Types of soldering irons, maintaining, parts of the standard
soldering iron...
The soldering. Description and processes of the electronic soldering. Techniques,
advises and drawing.
www.cebek.com
The Circuit. Description of the practice circuit, functions...
Elements. Work desk, necessary tools, preparation of the material...
Electronic Soldering.
Soldering iron parts
Tip
Tip fixing
Resistor
Handle
Voltage
Input
To heat both parts Tin application
When you apply the tin between the two surfaces, it will appear a half sphere with
different size, according to the application surface. When you completely cover the
area reserved to the soldering, and obviously the part in contact with the PCB, you
have to remove the soldering iron and to wait for the complete tin's cooling.
Do not remove the soldering iron before the complete tin's cooling otherwise you can
provoke a defective soldering named “Cold soldering”.
After the tin's cooling you have to cut the pin excess of the component using cut
pincers specialised adapted to the electronics. You have to cut at approximately 1
myriameter on the tin top.
Step 7. To finish the soldering.
Completed soldering To cut terminals
Troubles and Problems in the soldering (Advices)
1.-You have to solder only when the soldering iron reach the operating
temperature.
2.-The soldering iron tip has to be maintained free of tin excess and/or dirt.
3.-The tip has to be placed between the two elements you want to solder, on the
union point between both.
4.-The tin has to be applied to the surface you want to solder, if you only put it on
top, it could happen a dab soldering.
5.-Do never solder, firstly accumulating the tin on the tip and secondly pouring it on
the circuit (PCB), in order to avoid a cold soldering.
Tin coils
EDU-004. Electronic Soldering.
The Electronic Soldering.
The electronic soldering offers two essential functions, to physically fix a component
and its electrical conductivity with the rest of the circuit.
To obtain these two goals, you have to use the combination between a metal with a
low melting point (between 200º and 400ºC) and a soldering iron to heat it.
When you apply the soldering iron on the metal, this one (who is normally in solid
state) will be liquefied to be distributed along the surface prepared for this operation.
As it is a dense liquid, it will remain around the track or the hole on which it is applied
without overpass on the rest of the circuit.
The Tin.
Soldering types.
The metal used for the electronic soldering is an alloy, basically composed by tin, which
guarantees a correct electrical conductivity. It is economical, and its melting point is
placed on a threshold allowing to use basic soldering irons, avoiding to naturally reach
the temperature for the sate change and it doesn't require voluminous or powerful
melting apparatus.
For other applications, there are conductors metals, like the gold, with optimal
technical characteristics and answering to higher requirements (for space or military
industries, or microprocessor cores, etc…)
The tin used in electronics is supplied in wire format, around coils with different sizes.
It has a colophony cover making easier its handling and with anticorrosion function.
There are different types of tin, for different applications, like electrical soldering, or
plumber soldering; but they are not suitable for electronic applications, due to its
different composition and fluidity.
The soldering can be manual or by machine, this one being standard or by SMD.
The automatic soldering in SMD, where it is necessary a robotised machine applying
mechanism which collects components (normally placed on roll) and place them on a
determined location (coordinate) on the circuit, previously impregnated with paste for
tin in specific points. Finally the machine apply heat to melt the paste and connecting
components with the circuit. This method is used for important quantities.
The standard soldering using machine, with components different than SMD, requires a
manual components insertion, where finally and through wave system, they are
soldered. This system is used for medium or small quantities.
Finally, the manual soldering requires a manual components insertion and a soldering
iron for soldering. It is used for small quantities, normally associated to small
production lines or prototype.
EDUCATIONAL MODULES
For LEARNING and to PRACTISE the ELECTRONICS

EDU-004
EDU-004
pag. 1/8 pag. 8/8
EDU-004
EDU-004
pag. 5/8 pag. 4/8
EDU-004. Electronic Soldering.
The soldering iron.
Among soldering irons, we can identify three different types; the soldering iron, the
soldering and/or desolder station and the SMD soldering station. All of them carry out
the same function, to allow to solder the component on the circuit printed circuit
board. The selection, among these three possibilities, is in accordance with the use.
For laboratories, small assembling lines and for professional uses, it is generally selected
the soldering station and/or the SMD soldering station, according to the used
component. For punctual uses, and without any exigent or continuous performance, it
is recommended to use a standard soldering iron, also named “Pencil”, which is the
most cheaper and portable.
Standard pencil soldering irons are classified according their power, from 6W to 30W,
and they can be basically divided in 5 parts.
It is more important to emphasize the soldering iron tip, the element the more exigent
and where the manufacturer's technology has to be highly efficient. This one has to
distribute the heat concentration just on the tip, and it has also to support the
maximum temperature of the apparatus, to maintain a tip's life as long as possible, and
of course to insure the intact maintaining of its technical characteristics.
The difference between all manufacturers is basically concentrated in this point, the
answer of the heat applied to the tip and its life cycle. Few companies obtain an
excellent qualification.
Each soldering iron allows, with different support systems, to substitute the used tip by
a new one, or to adapt different diameters to adapt the soldering iron to required
soldering operations. The manufacturer offers standard tips and long duration tips for
professional applications.
The other basic element of the soldering iron is the resistor, charged to transform the
electrical current to heat and to drive it up to the tip. Its power will vary according to
the model, higher the resistor is and lower the tin's smelting time is and lower the heat
loss is on the tip between successive soldering operations.
The voltage input to the solder can be with a direct connection to the mains (230 V) or
through a connector to the soldering station; in such case, the used voltage has to be
12 V DC.
The soldering iron maintenance is essential to guarantee a perfect soldering, as well as
to extend the life duration of the tip. You have to avoid shocks on the resistor or on
the tip itself, and to weekly and carefully clean it, removing excess and accumulation of
tin and “resin”.
The cleaning operation has to be always done when the soldering iron is at its optimal
operating temperature, washing the dirty tip part with a wet sponge or with similar
item. Both accessories have to be especially prepared for soldering irons.
0419
Rev.
EDU-004. Electronic Soldering.
difficulties to be completely distributed, due to a lack of heat on it. To solve this matter,
you have to slightly move the soldering iron to supply heat to the rest of the surface
and then make easier its application and complete tin cover.
Step 6. To start the soldering, ( ).2nd part
EDU-004.
The module EDU-004 introduce and indoctrinate the student to the electronic
soldering, offering a specific information to the tin's characteristics, description of the
soldering iron, soldering techniques, practical data for the professional user, etc…
It is composed by 10 printed circuit boards with necessary components to assemble
auto-oscillators circuits composed by two leds. Printed circuit boards includes a
mask to make easier the first soldering operations, and serigraphy to identify the
components' location.
Introduction. Specification of different elements of the electronic soldering, most
popular methods, tin alloys , etc..
Soldering Iron. Types of soldering irons, maintaining, parts of the standard
soldering iron...
The soldering. Description and processes of the electronic soldering. Techniques,
advises and drawing.
www.cebek.com
The Circuit. Description of the practice circuit, functions...
Elements. Work desk, necessary tools, preparation of the material...
Electronic Soldering.
Soldering iron parts
Tip
Tip fixing
Resistor
Handle
Voltage
Input
To heat both parts Tin application
When you apply the tin between the two surfaces, it will appear a half sphere with
different size, according to the application surface. When you completely cover the
area reserved to the soldering, and obviously the part in contact with the PCB, you
have to remove the soldering iron and to wait for the complete tin's cooling.
Do not remove the soldering iron before the complete tin's cooling otherwise you can
provoke a defective soldering named “Cold soldering”.
After the tin's cooling you have to cut the pin excess of the component using cut
pincers specialised adapted to the electronics. You have to cut at approximately 1
myriameter on the tin top.
Step 7. To finish the soldering.
Completed soldering To cut terminals
Troubles and Problems in the soldering (Advices)
1.-You have to solder only when the soldering iron reach the operating
temperature.
2.-The soldering iron tip has to be maintained free of tin excess and/or dirt.
3.-The tip has to be placed between the two elements you want to solder, on the
union point between both.
4.-The tin has to be applied to the surface you want to solder, if you only put it on
top, it could happen a dab soldering.
5.-Do never solder, firstly accumulating the tin on the tip and secondly pouring it on
the circuit (PCB), in order to avoid a cold soldering.
Tin coils
EDU-004. Electronic Soldering.
The Electronic Soldering.
The electronic soldering offers two essential functions, to physically fix a component
and its electrical conductivity with the rest of the circuit.
To obtain these two goals, you have to use the combination between a metal with a
low melting point (between 200º and 400ºC) and a soldering iron to heat it.
When you apply the soldering iron on the metal, this one (who is normally in solid
state) will be liquefied to be distributed along the surface prepared for this operation.
As it is a dense liquid, it will remain around the track or the hole on which it is applied
without overpass on the rest of the circuit.
The Tin.
Soldering types.
The metal used for the electronic soldering is an alloy, basically composed by tin, which
guarantees a correct electrical conductivity. It is economical, and its melting point is
placed on a threshold allowing to use basic soldering irons, avoiding to naturally reach
the temperature for the sate change and it doesn't require voluminous or powerful
melting apparatus.
For other applications, there are conductors metals, like the gold, with optimal
technical characteristics and answering to higher requirements (for space or military
industries, or microprocessor cores, etc…)
The tin used in electronics is supplied in wire format, around coils with different sizes.
It has a colophony cover making easier its handling and with anticorrosion function.
There are different types of tin, for different applications, like electrical soldering, or
plumber soldering; but they are not suitable for electronic applications, due to its
different composition and fluidity.
The soldering can be manual or by machine, this one being standard or by SMD.
The automatic soldering in SMD, where it is necessary a robotised machine applying
mechanism which collects components (normally placed on roll) and place them on a
determined location (coordinate) on the circuit, previously impregnated with paste for
tin in specific points. Finally the machine apply heat to melt the paste and connecting
components with the circuit. This method is used for important quantities.
The standard soldering using machine, with components different than SMD, requires a
manual components insertion, where finally and through wave system, they are
soldered. This system is used for medium or small quantities.
Finally, the manual soldering requires a manual components insertion and a soldering
iron for soldering. It is used for small quantities, normally associated to small
production lines or prototype.
EDUCATIONAL MODULES
For LEARNING and to PRACTISE the ELECTRONICS

c.b.
EDU-004
EDU-004
pag. 7/8 pag. 2/8
EDU-004
EDU-004
pag. 3/8 pag. 6/8
EDU-004. Electronic Soldering.
Module’s power supply.
The circuit is supplied at 9 V DC, even if it can accept voltage from 5 to 12 V DC. You
have to use a laboratory stabilised power supply like the Cebek FE-103. The circuit's
power supply is done through input terminals, identified with positive and negative
symbols. Regarding the power supply connection you have to respect the indicated
polarity. For the installation, we suggest you to place a switch and a 50 mA fuse on the
positive input.
Required Material.
To make this practice it will be necessary:
.- A soldering iron for electronics, a “pencil” type or soldering station.
.- Cut pincers
.- Fixing pincers
.- Pincers
More over, if you already have a tool to support the printed circuit board and
components, you can se it.
EDU-004. Electronic Soldering.
Step 3. To select components and to insert them, ( ).2nd part
Step . To verify the soldering iron temperature4.
Step . To clean e5 lements.
Step . To start the soldering6.
according to the projected components' height.
Usually, the soldering process is started with integrated circuit and their basis, then
components with lower height like transistors, small capacitors, leds, etc….and
successively till you complete the circuit with higher components.
Concerning the manual soldering, there are several tools to help you to maintain fixed
components on the circuit till you finish the soldering, leaving free both hands. Ifyou
don't have any tool, you will be obliged to use alternative fixing methods.
Some components like resistors allow, through their opening terminals, to be turned
without falling and then to be soldered. Others components require to be obligatory
fixed to the board, for instance, using specific pincers…
The soldering process has to be start when the soldering iron reaches the maximum
operating temperature. A practical way to check it is to move closer the tin to the tip
and if it melts without problems, that means the soldering iron is ready to be used.
Before to start this process, it is highly recommended to check the board side where
components have to be soldered. For industrial circuits, containing a previous tin bath,
you only have to brush the surface to eliminate any impurity or tin wire, invisible at the
sight. For home circuit, a previous cleaning with alcohol or solvent will make easier the
soldering operation.
Regarding the soldering iron tip, before to sold each component you have to check the
its cleaning state. If you have an accumulated excess of tin or resin, you have to clean it
washing the dirty tip part with a wet sponge and with the tip as hot as possible. This
operation has to be constantly and frequently done till you finish the circuit; otherwise
it can be produced failures on the soldering or problems on the soldering process.
The soldering iron tip has to be placed on the union of two elements to solder,
allowing the heat distribution between both. You have to control the heat application;
this one has to be enough to heat both components, but not excessive, to avoid to
damage the component. If you use pincers to support the component's pin, you have
also to take in account the temperature loss due to the pincer's absorption.
When both elements are heated, without removing the soldering iron, you have to
apply the tin on the surface to solder, avoiding to touch the tip. The tin will be melted
and flow between both elements to solder, being distributed on the surface. If this
surface is important (the hole as important as the pin), the tin may have some
Bibliography.
- On Google: Soldering | Soldering station.
- On the internet: www.fadisel.com | www.jbc.com |
www.panavise.com/f/vises/vises_cbholders.html
EDU-004. Electronic Soldering.
The soldering practice includes a board composed by 10 identical circuits' auto cut and
components to assemble them. See the circuit electrical drawing and components map
to easily found their value and their location on the circuit.
The end-user has to assemble and to sold these 10 circuits, the practice of this
repetitive process will insure you the initiation and the improvement concerning the
soldering technique.
Firstly, you have to control the raster of the components present on the circuit, as well
as the acquisition format. For instance, if the resistors' location is supplied in a 15 mm
raster or at the opposite in 10 mm (as the supplied one in this practice).
It will be necessary to cut tem to a suitable size. There are different tools specially
designed for this function, even if generally this preparation is manually done.
Cut or standard pincers, tin and soldering iron as well as a wet sponge will be
necessary tools to start the soldering. A soldering iron support will be highly
recommended to avoid burns o accidents due to a lack of fixing when it is useless.
To cut and remove several circuits, you have to slightly press in opposite ways the
circuit to remove and the following; then you could easily withdraw each piece.
Once inserted on the circuit, each component projects a determined height on the
circuit's basis. Indeed, a diode or an integrated circuit don't have the same height than a
capacitor or a terminal. In order to avoid any disturb during the soldering process and
to use assembly tools, the component insertion won't be done in anarchical mode but
Soldering Practice
Electrical Drawing
LD1
LD2
R4
R3
T2
T1
R1
R2
D1
C1
C2
1/4 W. All Resistors
Vcc VccVcc
R1
10K
T1
BC547
R3
10K
T2
BC547
+
C1
100uF
+
C2
100uF
LD2
5mmled
R2
560
R4
560
LD1
5mmled
Vcc
POWER
1
2
D1
1N4003
GreenRed
Components indication.
Practice Drawings.
Step 1. To prepare the material.
Step 2. To remove the circuit from the panel.
Step 3. To select components and to insert them.
Module´s operating mode.
Once the module supplied, it will start a constant intermittence between the led 1 and
the led 2. The intermittence speed will depend on C1 and C2 capacitors. If you are
using capacitors with lower capacity, the intermittence speed will be higher. At the
opposite, if capacitors offer a higher capacity, the intermittence speed will decrease.
More over, if C1 and C2 have a different value, the intermittence will be asynchronous.
180º
90º
raster
Components preparation and auto fixing.
a.
EDU-004. Electronic Soldering.
Cebek educational modules included in the EDU serial offer several practices to analyse,
experiment and to learn basic knowledge on the studied theme. Nevertheless, their
function is not to make a mini-class on each theme, but to complete and to be used as
basis, as well as to allow to experiment on the theoretical theme evocated by the teacher.
For this reason, we suggest you to use modules form the EDU serial under the
supervision and the direction of a teacher.
Cebek doesn't offer a consulting service as concern the theoretical or the operating
principles concerning the theme deal with the module. It only offers a technical assistance
regarding questions and problems coming from the circuit's internal operating mode.
All Cebek modules included in the EDU serial have a warranty of 3 years as concerning
components and labour man. All damages provoked by external causes (from the circuit),
as well as wrong connections or installations or due to an operating mode no indicated
into the module's documentation won't be covered by the warranty. More over, all wrong
or incorrect handling won't be excluded from the warranty. For any claim, you have to
present the corresponding invoice.
To contact our technical department, you can send a message to , or a
fax :Nº+34.93.432.29.95 or a mail to the following address: CEBEK, c/Quetzal, 17-21,
08014 Barcelona (SPAIN).
[email protected]
Warranty and Do not forget.
Rules and Identification of the EDU serial elements.
To make easier the identification and for a single rule as concern different practices and
educational Cebek modules, all common elements will answer to colour code and to a
shape.
Test Point. (TP).
It allows to connect oscilloscope's or multimeter extremities to read parameters
relating to the practice. According to its colour, it will indicate that the Test Point
(TP) is connected to the positive or to the negative of the circuit, as well as reads
concerning current, voltage, load, etc….
Jumper.
circuit
Red
Conmutator / Switch.
Power supply Current Voltage
Red Blue Yellow Logical
TP. Tension
Yellow
TP. circuit
Black
TP. TP. Courant
Blue
TP Without current or TP AC.
White
Green
It allows to close or open a signal or an electrical circuit
According to the colour of the switch, you can control the voltage, the current
Before to start...
Before to start a practice, it is very important to carefully read its instruction manual as
well as corresponding indications.
You have to do correctly connections in indicated contact points, otherwise measures
depending on these connections will be confuses or wrong.
Do not make connections not indicated in the instruction manual to avoid to damage
the circuit.
If the Led of the power supply “PWR” doesn't light on or if its function suddenly stops,
you have to quickly disconnect the power supply for the device and check there is any
short-circuit as well as the fuse's status.
Even if described practices can be done following instruction manual, we recommend
you to use it under the supervision of a teacher who can advise and bring you a support
(an help) concerning described concepts.
In the circuit, each practice will be delimited by a rectangle with the corresponding
number. One or several experiment(s) can be reported and referenced to this practice.

c.b.
EDU-004
EDU-004
pag. 7/8 pag. 2/8
EDU-004
EDU-004
pag. 3/8 pag. 6/8
EDU-004. Electronic Soldering.
Module’s power supply.
The circuit is supplied at 9 V DC, even if it can accept voltage from 5 to 12 V DC. You
have to use a laboratory stabilised power supply like the Cebek FE-103. The circuit's
power supply is done through input terminals, identified with positive and negative
symbols. Regarding the power supply connection you have to respect the indicated
polarity. For the installation, we suggest you to place a switch and a 50 mA fuse on the
positive input.
Required Material.
To make this practice it will be necessary:
.- A soldering iron for electronics, a “pencil” type or soldering station.
.- Cut pincers
.- Fixing pincers
.- Pincers
More over, if you already have a tool to support the printed circuit board and
components, you can se it.
EDU-004. Electronic Soldering.
Step 3. To select components and to insert them, ( ).2nd part
Step . To verify the soldering iron temperature4.
Step . To clean e5 lements.
Step . To start the soldering6.
according to the projected components' height.
Usually, the soldering process is started with integrated circuit and their basis, then
components with lower height like transistors, small capacitors, leds, etc….and
successively till you complete the circuit with higher components.
Concerning the manual soldering, there are several tools to help you to maintain fixed
components on the circuit till you finish the soldering, leaving free both hands. Ifyou
don't have any tool, you will be obliged to use alternative fixing methods.
Some components like resistors allow, through their opening terminals, to be turned
without falling and then to be soldered. Others components require to be obligatory
fixed to the board, for instance, using specific pincers…
The soldering process has to be start when the soldering iron reaches the maximum
operating temperature. A practical way to check it is to move closer the tin to the tip
and if it melts without problems, that means the soldering iron is ready to be used.
Before to start this process, it is highly recommended to check the board side where
components have to be soldered. For industrial circuits, containing a previous tin bath,
you only have to brush the surface to eliminate any impurity or tin wire, invisible at the
sight. For home circuit, a previous cleaning with alcohol or solvent will make easier the
soldering operation.
Regarding the soldering iron tip, before to sold each component you have to check the
its cleaning state. If you have an accumulated excess of tin or resin, you have to clean it
washing the dirty tip part with a wet sponge and with the tip as hot as possible. This
operation has to be constantly and frequently done till you finish the circuit; otherwise
it can be produced failures on the soldering or problems on the soldering process.
The soldering iron tip has to be placed on the union of two elements to solder,
allowing the heat distribution between both. You have to control the heat application;
this one has to be enough to heat both components, but not excessive, to avoid to
damage the component. If you use pincers to support the component's pin, you have
also to take in account the temperature loss due to the pincer's absorption.
When both elements are heated, without removing the soldering iron, you have to
apply the tin on the surface to solder, avoiding to touch the tip. The tin will be melted
and flow between both elements to solder, being distributed on the surface. If this
surface is important (the hole as important as the pin), the tin may have some
Bibliography.
- On Google: Soldering | Soldering station.
- On the internet: www.fadisel.com | www.jbc.com |
www.panavise.com/f/vises/vises_cbholders.html
EDU-004. Electronic Soldering.
The soldering practice includes a board composed by 10 identical circuits' auto cut and
components to assemble them. See the circuit electrical drawing and components map
to easily found their value and their location on the circuit.
The end-user has to assemble and to sold these 10 circuits, the practice of this
repetitive process will insure you the initiation and the improvement concerning the
soldering technique.
Firstly, you have to control the raster of the components present on the circuit, as well
as the acquisition format. For instance, if the resistors' location is supplied in a 15 mm
raster or at the opposite in 10 mm (as the supplied one in this practice).
It will be necessary to cut tem to a suitable size. There are different tools specially
designed for this function, even if generally this preparation is manually done.
Cut or standard pincers, tin and soldering iron as well as a wet sponge will be
necessary tools to start the soldering. A soldering iron support will be highly
recommended to avoid burns o accidents due to a lack of fixing when it is useless.
To cut and remove several circuits, you have to slightly press in opposite ways the
circuit to remove and the following; then you could easily withdraw each piece.
Once inserted on the circuit, each component projects a determined height on the
circuit's basis. Indeed, a diode or an integrated circuit don't have the same height than a
capacitor or a terminal. In order to avoid any disturb during the soldering process and
to use assembly tools, the component insertion won't be done in anarchical mode but
Soldering Practice
Electrical Drawing
LD1
LD2
R4
R3
T2
T1
R1
R2
D1
C1
C2
1/4 W. All Resistors
Vcc VccVcc
R1
10K
T1
BC547
R3
10K
T2
BC547
+
C1
100uF
+
C2
100uF
LD2
5mmled
R2
560
R4
560
LD1
5mmled
Vcc
POWER
1
2
D1
1N4003
GreenRed
Components indication.
Practice Drawings.
Step 1. To prepare the material.
Step 2. To remove the circuit from the panel.
Step 3. To select components and to insert them.
Module´s operating mode.
Once the module supplied, it will start a constant intermittence between the led 1 and
the led 2. The intermittence speed will depend on C1 and C2 capacitors. If you are
using capacitors with lower capacity, the intermittence speed will be higher. At the
opposite, if capacitors offer a higher capacity, the intermittence speed will decrease.
More over, if C1 and C2 have a different value, the intermittence will be asynchronous.
180º
90º
raster
Components preparation and auto fixing.
a.
EDU-004. Electronic Soldering.
Cebek educational modules included in the EDU serial offer several practices to analyse,
experiment and to learn basic knowledge on the studied theme. Nevertheless, their
function is not to make a mini-class on each theme, but to complete and to be used as
basis, as well as to allow to experiment on the theoretical theme evocated by the teacher.
For this reason, we suggest you to use modules form the EDU serial under the
supervision and the direction of a teacher.
Cebek doesn't offer a consulting service as concern the theoretical or the operating
principles concerning the theme deal with the module. It only offers a technical assistance
regarding questions and problems coming from the circuit's internal operating mode.
All Cebek modules included in the EDU serial have a warranty of 3 years as concerning
components and labour man. All damages provoked by external causes (from the circuit),
as well as wrong connections or installations or due to an operating mode no indicated
into the module's documentation won't be covered by the warranty. More over, all wrong
or incorrect handling won't be excluded from the warranty. For any claim, you have to
present the corresponding invoice.
To contact our technical department, you can send a message to , or a
fax :Nº+34.93.432.29.95 or a mail to the following address: CEBEK, c/Quetzal, 17-21,
08014 Barcelona (SPAIN).
[email protected]
Warranty and Do not forget.
Rules and Identification of the EDU serial elements.
To make easier the identification and for a single rule as concern different practices and
educational Cebek modules, all common elements will answer to colour code and to a
shape.
Test Point. (TP).
It allows to connect oscilloscope's or multimeter extremities to read parameters
relating to the practice. According to its colour, it will indicate that the Test Point
(TP) is connected to the positive or to the negative of the circuit, as well as reads
concerning current, voltage, load, etc….
Jumper.
circuit
Red
Conmutator / Switch.
Power supply Current Voltage
Red Blue Yellow Logical
TP. Tension
Yellow
TP. circuit
Black
TP. TP. Courant
Blue
TP Without current or TP AC.
White
Green
It allows to close or open a signal or an electrical circuit
According to the colour of the switch, you can control the voltage, the current
Before to start...
Before to start a practice, it is very important to carefully read its instruction manual as
well as corresponding indications.
You have to do correctly connections in indicated contact points, otherwise measures
depending on these connections will be confuses or wrong.
Do not make connections not indicated in the instruction manual to avoid to damage
the circuit.
If the Led of the power supply “PWR” doesn't light on or if its function suddenly stops,
you have to quickly disconnect the power supply for the device and check there is any
short-circuit as well as the fuse's status.
Even if described practices can be done following instruction manual, we recommend
you to use it under the supervision of a teacher who can advise and bring you a support
(an help) concerning described concepts.
In the circuit, each practice will be delimited by a rectangle with the corresponding
number. One or several experiment(s) can be reported and referenced to this practice.

EDU-004
EDU-004
pag. 1/8 pag. 8/8
EDU-004
EDU-004
pag. 5/8 pag. 4/8
EDU-004. Electronic Soldering.
The soldering iron.
Among soldering irons, we can identify three different types; the soldering iron, the
soldering and/or desolder station and the SMD soldering station. All of them carry out
the same function, to allow to solder the component on the circuit printed circuit
board. The selection, among these three possibilities, is in accordance with the use.
For laboratories, small assembling lines and for professional uses, it is generally selected
the soldering station and/or the SMD soldering station, according to the used
component. For punctual uses, and without any exigent or continuous performance, it
is recommended to use a standard soldering iron, also named “Pencil”, which is the
most cheaper and portable.
Standard pencil soldering irons are classified according their power, from 6W to 30W,
and they can be basically divided in 5 parts.
It is more important to emphasize the soldering iron tip, the element the more exigent
and where the manufacturer's technology has to be highly efficient. This one has to
distribute the heat concentration just on the tip, and it has also to support the
maximum temperature of the apparatus, to maintain a tip's life as long as possible, and
of course to insure the intact maintaining of its technical characteristics.
The difference between all manufacturers is basically concentrated in this point, the
answer of the heat applied to the tip and its life cycle. Few companies obtain an
excellent qualification.
Each soldering iron allows, with different support systems, to substitute the used tip by
a new one, or to adapt different diameters to adapt the soldering iron to required
soldering operations. The manufacturer offers standard tips and long duration tips for
professional applications.
The other basic element of the soldering iron is the resistor, charged to transform the
electrical current to heat and to drive it up to the tip. Its power will vary according to
the model, higher the resistor is and lower the tin's smelting time is and lower the heat
loss is on the tip between successive soldering operations.
The voltage input to the solder can be with a direct connection to the mains (230 V) or
through a connector to the soldering station; in such case, the used voltage has to be
12 V DC.
The soldering iron maintenance is essential to guarantee a perfect soldering, as well as
to extend the life duration of the tip. You have to avoid shocks on the resistor or on
the tip itself, and to weekly and carefully clean it, removing excess and accumulation of
tin and “resin”.
The cleaning operation has to be always done when the soldering iron is at its optimal
operating temperature, washing the dirty tip part with a wet sponge or with similar
item. Both accessories have to be especially prepared for soldering irons.
0419
Rev.
EDU-004. Electronic Soldering.
difficulties to be completely distributed, due to a lack of heat on it. To solve this matter,
you have to slightly move the soldering iron to supply heat to the rest of the surface
and then make easier its application and complete tin cover.
Step 6. To start the soldering, ( ).2nd part
EDU-004.
The module EDU-004 introduce and indoctrinate the student to the electronic
soldering, offering a specific information to the tin's characteristics, description of the
soldering iron, soldering techniques, practical data for the professional user, etc…
It is composed by 10 printed circuit boards with necessary components to assemble
auto-oscillators circuits composed by two leds. Printed circuit boards includes a
mask to make easier the first soldering operations, and serigraphy to identify the
components' location.
Introduction. Specification of different elements of the electronic soldering, most
popular methods, tin alloys , etc..
Soldering Iron. Types of soldering irons, maintaining, parts of the standard
soldering iron...
The soldering. Description and processes of the electronic soldering. Techniques,
advises and drawing.
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The Circuit. Description of the practice circuit, functions...
Elements. Work desk, necessary tools, preparation of the material...
Electronic Soldering.
Soldering iron parts
Tip
Tip fixing
Resistor
Handle
Voltage
Input
To heat both parts Tin application
When you apply the tin between the two surfaces, it will appear a half sphere with
different size, according to the application surface. When you completely cover the
area reserved to the soldering, and obviously the part in contact with the PCB, you
have to remove the soldering iron and to wait for the complete tin's cooling.
Do not remove the soldering iron before the complete tin's cooling otherwise you can
provoke a defective soldering named “Cold soldering”.
After the tin's cooling you have to cut the pin excess of the component using cut
pincers specialised adapted to the electronics. You have to cut at approximately 1
myriameter on the tin top.
Step 7. To finish the soldering.
Completed soldering To cut terminals
Troubles and Problems in the soldering (Advices)
1.-You have to solder only when the soldering iron reach the operating
temperature.
2.-The soldering iron tip has to be maintained free of tin excess and/or dirt.
3.-The tip has to be placed between the two elements you want to solder, on the
union point between both.
4.-The tin has to be applied to the surface you want to solder, if you only put it on
top, it could happen a dab soldering.
5.-Do never solder, firstly accumulating the tin on the tip and secondly pouring it on
the circuit (PCB), in order to avoid a cold soldering.
Tin coils
EDU-004. Electronic Soldering.
The Electronic Soldering.
The electronic soldering offers two essential functions, to physically fix a component
and its electrical conductivity with the rest of the circuit.
To obtain these two goals, you have to use the combination between a metal with a
low melting point (between 200º and 400ºC) and a soldering iron to heat it.
When you apply the soldering iron on the metal, this one (who is normally in solid
state) will be liquefied to be distributed along the surface prepared for this operation.
As it is a dense liquid, it will remain around the track or the hole on which it is applied
without overpass on the rest of the circuit.
The Tin.
Soldering types.
The metal used for the electronic soldering is an alloy, basically composed by tin, which
guarantees a correct electrical conductivity. It is economical, and its melting point is
placed on a threshold allowing to use basic soldering irons, avoiding to naturally reach
the temperature for the sate change and it doesn't require voluminous or powerful
melting apparatus.
For other applications, there are conductors metals, like the gold, with optimal
technical characteristics and answering to higher requirements (for space or military
industries, or microprocessor cores, etc…)
The tin used in electronics is supplied in wire format, around coils with different sizes.
It has a colophony cover making easier its handling and with anticorrosion function.
There are different types of tin, for different applications, like electrical soldering, or
plumber soldering; but they are not suitable for electronic applications, due to its
different composition and fluidity.
The soldering can be manual or by machine, this one being standard or by SMD.
The automatic soldering in SMD, where it is necessary a robotised machine applying
mechanism which collects components (normally placed on roll) and place them on a
determined location (coordinate) on the circuit, previously impregnated with paste for
tin in specific points. Finally the machine apply heat to melt the paste and connecting
components with the circuit. This method is used for important quantities.
The standard soldering using machine, with components different than SMD, requires a
manual components insertion, where finally and through wave system, they are
soldered. This system is used for medium or small quantities.
Finally, the manual soldering requires a manual components insertion and a soldering
iron for soldering. It is used for small quantities, normally associated to small
production lines or prototype.
EDUCATIONAL MODULES
For LEARNING and to PRACTISE the ELECTRONICS