POWER DESIGNS TP340 User manual
TECHNICAL
DATA
·lRIPlE
OUTPUT
LABORATORY
POWER
SUPPLY
T2
L,
COS/MOS
AND
ANALOG
APPLICATIONS
MODEL
TP343
A
electrical
specifications:
Sources
A& B
(1)
0·20V, 0·2.SA
Parameter
each
output
INPUT: 105·125, 58-440 Hz
OUTPUT 0·20V, 0·2.5A
10·25V
, 0·1A
LOAD REGULATION: 0.01% + 1 mV per amp
LINE REGULATION: 0.01%
+0.5
mV
STABILITY
(2)
0.
02
%
+1
mV
RECOVERY TIME
(3)
100
us
CURRENT LIMIT 2
%·
105%
of
rated current
TEMPERATURE 0-
50
'C
TEMP. COEFFICIENT 0.02% + 300 uV
l'C
OV
CROWBAR
Adj.
~
3·30V
(4)
TRACKING 0.1%
+10mVby
front panel
switch
VOLTAGE CONTROLS
10
turn
potentiometer
FAULT INDICATORS Lamp
indicates
short
circuit and overload
METERING Dual range volt/ammeter
(1)
Sources A & B have one common terminal
*SOURCE
A
*SOURCE
B
SOURCE
c
IMPROVED
SPECIFICATIONS
-(
0-20
VDC,0-2.5A
/
0-25
VDC,0-lA
0-20
VDC,0-2.5A
/
0-25
VDC,0-lA
0-6
VDC,0-5A
I
0-15
VDC,0-2.5A
-
j>_
'Independent
or
0.1
%
tracking
with
panel
switch
NOISE
&
RIPPLE
LESS
THAN
lmV
P-P
source C
0·6V,
0-SA
C).1SV,
0-2.SA
0-6V
, 0·5AI 0-15V, 0-2.5A
0.
01
% + 1 mV per amp
0.01
% + 0.5 mV
0.
02
% + 1 mV
100
uS
2%-105%
of
rated current
0·
50
'C
0.02% + 300
uV/'C
Adj. 3·20V
10
turn
potentiometer
Lamp indicates short
circuit and overload
Dual range volt/ammeter
features:
• No derating. All
outputs
may be operated simul·
taneously at f
ull
capacity
for
a
maximum
of 140W.
•
Outputs
are floatin'Q
with
respect
to
each
other
and chassis except for an _internal connection
between one negative terminal and one
positive
terminal
of
the
20
volt sources. The
two
20
volt
sources may be operated in series
to
prov
ide
0
-40
VDC, 0·2.
5A
in any pol
arity
with
respect
to
chassis
or
left
floating. The 0
·1
5V
source may be
operated
in
any polarity
with
respect
to
chassis
or
left floating.
• Independent
adjustment
of
each
output
voltage
utilizing
10·turn
potentiometers
with .05% reso-
lution
.
• Separate current
limit
ing
adjustment
for
each
output.
• Separately adjustable overvoltage crowbars on
each output. Overvoltage crowbars on 0·20V out·
puts
trip simultaneoulsy
if
either
one operates.
(2)
24
hours at
constant
lin
e,
load and ambient temperature
• Three taut band suspension dual range meters
individually selectable for voltage
or
current of
each source.
(3)
To recover
to
within
15
mV on nominal
for
a 10%·100% load change
(4)
Both sources
will
crowbar
if
either one operates
mechanical
specifications:
DIMENSIONS: 8'1•' H x 73A' W x
13
V2'
D.
WEIGHT:
20
lbs.
FINISH: Natural anodized
aluminum
panel; blue
vinyl enamel cabioet,
with
carrying handle.
• A
"F
AULT"
indicator
lamp on each
output
signals
overload, short circuit, crowbar trip or current
limit operation.
•
Automatic
voltage tracking
of
the 0-20 VDC
sources
to
:1:
0
.1
% by means
of
a panel toggle
switch
. This
switch
is equipped
with
a locking
lever
to
prevent accidental operation. Single
potentiometer
control
of
tracking outputs.
•
Outputs
may be shorted
into
each
other
in any
polarity
without
damage.
POWER
DESIGNS
POWER
DESIGNS
INC.
17
00
SHAMES
DRIVE
•
WESTBURY,
N.Y. 11590
Te
l:
516-333
-
6200
•TWX
510
-
222
-6561
POWER
DESIGNS
PACIFIC
INC
.
3381
MIRANDA
AVENUE
•
PALO
ALTO
.
CALIF
.
94304
Tel
:
415-493-6111
•TWX
910-373-1251
POWER
DESIGNS
INSTRUCTION
IVIANUAL
IVIDDELS
TP
3110
&
TP
3'13A
PO\NER
DESIGNS
INC.
1700 SHAMES
DRIVE•
WESTBURY, N.
Y.
11590 TEL (516) 333·6200
TWX (510) 222·6561
FAX (516) 333·6512
1.1
GENERAL
INSTRUCTION MANUAL
SECTION 1
INTRODUCTION
This
manual
contains
instructions
for
the
installation,
operation
and
mainentance
for
Power
Designs Model TP340 and TP343A
triple
output
DC
regulated
power
supply.
1.2 DESCRIPTION
This
triple
output
regulated
DC
power
source is
suitable
for general purpose
laboratory
and
industrial
applications.
It features
adjustable
and
independent
current
limiting
and over-
voltage
crowbar
protection
for each
output.
A
fault
lamp
indicates
crowbar
operation
or
an
overload
condition.
The
following
description
refers
to
the
three
outputs
as Source A
("A"},
Source B
(''B")
and
Source C
("C")
respectively.
The
power
supplied
by
"A"
and
"B"
is
obtained
from three
binding
posts
on the
front
panel.
The COMMON
terminal
is the
internal
connection
between the negative
terminal
of
"A"
and
the
positive
terminal
of
"B".
This
terminal
is
isolated
from
ground
and
both
terminals
of
"C".
The
DC+
terminal
on source
"A"
produces
a
positive
voltage
with
respect
to COMMON. The
DC
-
terminal
on source
"B"
produced a negative voltage
with
respect
to
COMMON. Power
from these
terminals
can
also
be
obtained
directly
from
DC+
to
DC - . In
that
case the out-
put voltage
will
be the sum
of
the
"A"
and
"B"
voltages.
A
front
panel TRACKING
switch
provides
individual
control
of
each source
or
automatic
Master/Slave operation. In
this
mode
source
"B"
tracks
source
"A".
Source
"C"
provides
power
by means
of
two
binding
posts
that
are
isolated
from ground.
This source may be operated in
either
polarity
with
respect to
chassis
or
left
floating.
All
outputs
may be operated
simultaneously
at full
capacity
with
no derating.
1.3 ELECTRICAL SPECIFICATIONS
INPUT: 105
to
125 Volts, 58-440 Hz
PARAMETER TP340 (Source A &
B)
TP343 (Source A &
B)
Both Models (Source
C)
Out_e_ut
0-32V,
0-1
AMP
0-20V, 0-2.5A 0-6V, 0-5A
0-25V, 0-1A 0-15V, 0-2.5A
Load
Re_g_ulation
0.01
% + 1MV PER
AMP
0.01
% + 1MV
PER
AMP
0.01
% + 1MV
PER
AMP
Line
Re_g_ulation
0.01
% + 0.5MV
0.01
% + 0.5MV
0.01
% + 0.5MV
Stabili!Y_J_Note
11
0.02% + 1MV 0.02% + 1MV 0.02% + 1MV
Recovery_Time
lNote
2)
50 us 100 us 100 us
Current
Limit
2%-105% 2%-105%
2%-105%
of
rated
current
of
rated
current
of
rated
current
02_eratin_g_
Temp. 0-50°C 0-50
°C
0-50°C
Tem_g.
Coefficient
0.02% + 300uv/°C 0.02% + 300uv/°C 0.02% + 300uv/°C
OV
Crowbar
Adj. 3-40V
lNote
31.
Adj. 3-30V (Note
3l_
Adj. 3-20V
Tracking
0.1% +
10
MV 0.1% +
10
MV
Metering
Dual Range
Volt/
Dual Range
Volt/
Dual Range
Volt/
Ammeter
Ammeter
Ammeter
-1
-
NOTES:
(1)
24
hours
at
constant
line, load and
ambient
temperature.
(2)
To recover
to
within
15 MV
of
nominal
for
a
10%
to
100%
step
change
in load.
(3)
Both
sources
will
crowbar
if
either
one operates.
1.4 MECHANICAL SPECIFICATIONS
DIMENSIONS:
8%"
H x
7314"
W x 131
12"
D.
WEIGHT: 20 lbs.
FINISH:
Natural
anodized panel,
blue
enamel
cabinet.
-2-
SECTION 2
INSTALLATION AND OPERATION
2.1
UNPACKING AND INSPECTION
This
instrument
is
ready for operation as shipped from the factory.
After
unpacking
inspect
for damage
that
might
have occured in transit.
2.2 PRELIMINARY PROCEDURES
2.2.1
Set the AC
switch
to
the OFF
position
and
connect
the line cord
to
an appropriate
source
of
AC power.
2.2.2 Rotate the Current, Voltage and Crowbar
controls
on all three sources
fully
clockwise.
2.2.3 Select the mode
of
operation
of
Source A and Source B by setting the tracking
switch
to
either
TRACKING for master/slave operation (Source A
controls
Source
B)
or
OFF
for individual control.
2.2.4 Set the AC
switch
to
the ON position. The AC lamp should light.
2.2.5 Set all three meter
function
switches
to
the VOLTS position. The three meters should
indicate
output
voltage. Set the desired
output
voltage levels for each source
with
the
Voltage control.
2.2.6 Connect the load
to
the front panel
binding
posts.
2.3 CONSTANT VOLTAGE OPERATION (All Sources)
2.3.1
Voltage
Adjustment
(1)
Rotate the voltage control for each source
fully
counterclockwise.
(2)
Set the AC
switch
to
the
ON
position. The AC
pilot
light
should illuminate.
(3)
Set the meter
function
switches
to
the VOL
TS
position.
(4)
Set the voltage control on each source
to
the desired
output
voltage level.
2.3.2 Current
Limiting
(1)
Set the AC
switch
to
the OFF position.
(2)
Connect a shorting
jumper
across the
output
terminals
of
each source.
(3)
Set the AC
switch
to
the
ON
position.
(4)
Set all three meter
function
switches
to
the AMPS position.
(5)
Set each current control
to
the desired current
limit
level.
(6)
Turn the supply
off
and remove the shorting
jumpers
from the
output
ter-
minals.
-3-
2.4 OVERVOLTAGE CROWBAR ADJUSTMENT
An overvoltage crowbar
circuit
is provided
to
protect the load
against
an excessive voltage
level. Such a
condition
can result from an internal
malfunction
of
the supply
or
simply
by the
operator inadvertantly
misadjusting
the voltage control.
When the
crowbar
is activated an SCR that is
electrically
connected across the
output
ter·
minals
of
the supply is triggered. This effectively places a short
cirucit
across the
output
ter-
minals.
With the
front
panel overvoltage
control
set
fully
clockwise
the overvoltage trip
point
is
ap-
proximately
20% higherthan the maximum rated
output
of
the supply. To set the
trip
point
to
a lower level, proceed as follows:
(1)
Remove the load from the supply.
(2)
Set the meter
function
switch
to
the
volts
position.
(3)
Adjust
the voltage
control
to
the desired
trip
point
as indicated on the panel
meter.
(4)
Turn the crowbar control
slowly
counter-clockwise
until
the
output
voltage as
indicated on the panel meter suddenly collapses
to
approximately 1 volt and
the current mode
indicator
lights.
(5)
Turn the voltage control counter-clockwise.
(6)
Reset the
crowbar
by turning the AC
switch
OFF and then back ON.
(7)
Adjust
the voltage control
to
the proper operating level.
NOTE:
Although
Source A and Source B have independent OV trip settings,
it
is
im-
portant
to
note
that
if
either one operates,
it
will
short both
output
terminals
simultaneously.
-4-
SECTION 3
PRINCIPLES OF OPERATION
This voltage regulated
power
supply
uses three
"linear
mode"
(series regulator)
systems
to
obtain
output
voltage regulation,
low
ripple and
low
noise
characteristic.
The
"linear
mode"
technique,
consists
basically
of
the
insertion
of
an
electronically
controlled
variable
impedance
(series
regulator) between a DC unregulated
source
and the
output
terminals
of
the
equipment.
Since
the
outputs
are very
similar
in
performance
we
will
describe
Source C
which
is
slightly
more
complex
due
to
its
dual
output
rating
characteristics.
T1
transformer
secondary
(terminals
15, 16,
17)
in
conjunction
with
bridge
rectifier
CR307 and
capacitors
C313, C314 and C315,
produces
two
unregulated
DC
power sources,
which
in
conjunction
with
series
regulators
0306, 0307,
0308
and driver 0304, provide the
output
power
of
the supply.
If
the
output
voltage
requirements
(as
determined
by the
output
VOLTAGE
control
setting)
is
below
the
voltage provided by the
unregulated
capacitors
C314, C315, the active series
regulators
will
be
0307
and 0308.
0306
will
operate as a driver.
If
the
output
voltage requirements are above the voltage pro-
vided by C314, C315, then the energy
will
be
supplied
by the series
capacitor
combination
of
the
above
mentioned
and C313 (from C313 +
to
C314-
).
0306
will
become the series
regulator
and
the
base
to
emmiter
junctions
of
0307
and
0308
will
act
as a
diode
in series
with
the
power
path.
Transformer
secondary
(terminals
13,
14)
in
conjunction
with
rectifier
CR301 and
capacitor
C301
pro-
duces an
unregulated
DC
source used
to
generate a B+ superregulated bias
voltage
and a B -
semi-regulated
voltage
for
amplifier
operation. Both bias voltages are
connected
to
the
DC+
output
of
the
power
supply.
The B +
bias
voltage is generated by VR303 (main reference
of
the overall source), R301-R305,
C302-C304, VR301, 0301 and
U301
B.
This
circuit
produces, across C304, a very
stable
and
low
ripple
voltage between 12.4 voe and 13.2 voe.
The B - bias voltage, generated by zener
diode
VR302,
should
have a
voltage
between 5.0 VDC and
5.8 voe.
The variable
resistor
divider
(R315,
R325
and
R344)
compares
the
output
voltage
of
the
supply
with
the B+ voltage; the
differential
voltage is then fed to the
input
of
voltage
comparator
amplifier,
U301A, whose
output
in
conjunction
with
current
amplifiers
0303
and
0304
modify
the drive
of
the
series
regulators
previously
mentioned,
to
maintain
voltage regulation.
The voltage developed
across
R333
(current sensor) due
to
external load currents, is used
for
am-
meter readings. It is
also
continuously
compared
to
B + by means
of
a
resistor
divider
(R310,
R311
and
R342)
at
amplifier
U301D.
If
the non-inverting
input
(pin
12)
becomes
lower
in
voltage
than the in-
verting input, (pin
13)
U301
D
will
be
activated
and operate
through
CR303 and CR304
to
decrease the
drive on 0303,
thus
limiting
the drive
to
the series regulators and hence the
current
of
the
power
sup-
ply.
Due
to
the dual rating
of
this
supply,
it
is
imperative
to
protect
0306
when
it
is
acting
as a series
regulator. Under
this
condition,
the main load
current
goes
through
R330;
its
voltage is
once
again
compared
to
the B+ by
amplifier
U301C,
limiting
the current
flow
on
0306
to
approximately
2.75A.
If
either
U301C
or
U301
D is activated,
they
will
operate 0302, driving
power
to
the FAULT lamp,
DS301.
The variable
resistor
divider
(R321,
R343)
compares
the
output
voltage
with
B+ at the base
to
em-
miter
junction
of
0305. Depending on the
setting
of
R343
(overvoltage
control)
and the
output
voltage
of
the source,
0305
will
be activated,
firing
the
silicon
control
rectifier
CR309,
producing
a
short on the
output
of
the supply, hence
protecting
the user's load.
This
short
will
make the
power
supply
go
inot
a
"FAULT"
mode. If an overvoltage on the
supply
is produced by
failure
of
the
control
circuits,
there is a
possibility
that
secondary
protection
fuse
F301
will
blow, in
which
case there may
not be a
"FAULT"
indication.
-5-
SECTION 4
MAINTENANCE
4.1
GENERAL
This
section
covers maintenance and calibration procedures. Under normal conditions, no
special maintenance is required. If trouble does develop however, the easily removable
cabinet
and the location
of
the printed
circuit
board provide exceptional
accessibility
to
all
components
of
the supply.
Regulation and ripple measurements
of
the
output
in both voltage and current mode are an
excellent
indication
of
the power
supply's
performance. Special techniques
must
be
employed
to
properly measure these parameters
to
avoid measuring voltage drops due
to
load currents. Details
of
correct measurement procedures
will
be described.
A
schematic
diagram, a location
of
components
drawing and a detailed electrical parts
list
are provided in the Appendix
of
this
manual
to
assist in
troubleshooting
the supply.
4.2 CALIBRATION
All the internal
controls
of
this
instrument
have been preset
prior
to
shipment from the fac-
tory. Recalibration
of
the voltmeter/ammeter should be made at intervals
of
approximately 1
year. Calibration
adjustments
must
be made
if
the power supply has been subject
to
a failure
that
required a component replacement. Calibration
control
function
and location on the
printed
circuit
assembly can be easily found by referring
to
the
location
of
components
draw-
ing in the Appendix
of
this
manual.
4.2.1
TEST EQUIPMENT REQUIRED:
(1)
5112
Digit
Digital VoltJneter (DVM)
with
better
than
0.1
% accuracy.
(2)
DC
Ammeter 0-6A
with
better than 0.5% accuracy.
(3)
Electronic
or
resistance load.
4.2.2 PANEL METER CALIBRATION
With
power supply off,
check
and
if
necessary,
adjust
mechanical zero
setting
of
each meter pointer.
4.2.3 VOLTMETER CALIBRATION
Turn on the power
supply
and
allow
for
5
minute
warmup. Set
front
panel meter func-
tion
switches
S101, S201, and
S301
to
V (Volts).
For Source A (Meter M101),
connect
DVM between COMMON and
DC+
("A").
Set the
output
voltage
to
24
VDC (TP340) or 17.5 VDC (TP343A) as measured on the DVM. Ad-
just
R401
to
set the panel meter
to
agree
with
the
DVM.
For Source B (Meter M201),
connect
DVM between COMMON and
DC
-
("B").
Pro-
ceed as above except
adjust
R403
trimmer.
For Source
C,
(Meter M301),
connect
DVM between
DC+
and
DC
-("C"). Set
output
voltage
to
12
VDC as measured on DVM.
Adjust
R405
trimmer
to
set panel meter
to
12V. Check for linearity at
5,
10,
and
15V.
Maximum deviation between panel meter
and DVM readings should
not
exceed 0.3V.
-6-
4.2.4 AMMETER CALIBRATION
Set meter
function
switches
to
A (amperes) and set the current
controls
fully
clockwise. Connect the load
to
the source whose meter is under calibration.
For Source A (Meter M101)
adjust
the load current as measured on the external am-
meter
to
1.0 ampere (TP340)
or
2.S
amperes (TP343A).
Adjust
R114
trimmer
to
set
panel meter
to
agree
with
the external ammeter.
For Source B (Meter M201), proceed as before except adjust"R214 trimmer.
For Source C (Meter M301), set the
output
voltage between
SV
and 6V;
adjust
load
current
to
S amperes as measured on external ammeter.
Adjust
R334
to
set panel
meter
to
SA.
4.2.S
VOLTAGE ADJUSTMENTS
Set
front
panel VOLTAGE
controls
fully
clockwise. Connect Digital
Voltmeter
toter-
minals
of
source
to
be adjusted.
For Source A
adjust
R129
to
obtain 32.8
to
33
volts
(TP340)
or
20.S
to
20.7
volts
(Model
TP343A).
For Source B proceed as in Source A
adjusting
R229.
For Source C
adjust
R326
to obtain an-output
of
1S.6
to
1S.8
volts.
4.2.6 CURRENT LIMIT ADJUSTMENTS
Set current
limit
adjustments
fully
clockwise. Connect load in series
with
external
ammeter
to
the Source under adjustment.
For Source
A:
Set
output
voltage
to
approximately
10
VDC output. Set
trimmer
R119
fully
clockwise. Connect load thru external ammeter and set current
to
approximately
1.07 Amperes (TP340)
or
2.7
Amperes (TP343A).
Adjust
R119
slowly
counterclockwise
until FAULT lamp illuminates. Reset
output
to
1 AMP (TP340)
or
2.S
AMPS (TP343A)
and
confirm
that
lamp goes out.
For Source
B:
Proceed as before except
adjusting
R219.
For Source
C:
Set
output
voltage
to
6VDC. Set
trimmer
R311
fully
clockwise. Connect
load thru external ammeter and set current
to
approximately
S.3SA.
Adjust
R311
slowly
counterclockwise
until
FAULT lamp displays. Reset
output
current
to
SA
and
confirm
that
FAULT lamp turns off.
Readjust
output
current
to
below 1A and increase
output
voltage
to
1S
VDC. Set
R318
fully
clockwise. Increase
output
current
to
approximately 2.7SA.
Adjust
R318
slowly
counterclockwise
until
FAULT displays. Decrease current
to
2.SA
and
confirm
that
FAULT lamp
turns
off.
-7-
4.3 TRACKING ADJUSTMENTS
Set locking toggle
switch
S202,
to
TRACKING. Set
output
voltage
of
Source A
to
approx-
imately
15
volts by means
of
the
DVM
and record
to
within
2MV. (For example 15.037V).
WITHOUT CHANGING THE SETTING OF SOURCE A OUTPUT VOLTAGE CONTROL transfer
DVM
to Source
B.
Adjust
R234
to
obtain the original recorded.
"A"
voltage within 2MV.
Voltages should now track through their entire range with
an
accuracy
of
0.1
% +1O
MV.
4.4 POWER SUPPLY MEASUREMENT TECHNIQUES
4.3.1
General
Power supply performance measurements require special techniques
to
insure cor-
rect results. The correct location
of
instrumentation leads is critical, since voltage
drops due to
contact
resistance and load current flow may lead
to
misleading results.
Four terminal network techniques as shown in Figure 1 must
be
employed
to
achieve
correct measurements.
In
addition
to
the equipment listed in 4.2.1, the following are required:
(1)
Adjustable
AC
input source (Variac) with provisions for accurately monitoring
the AC input voltage.
(2)
Oscilloscope with a bandwidth
of
not more than
10
MHz and a vertical sen-
sitivity
of
at
least 1mV/cm.
4.4.2 Definitions
(1)
Line Regulation: The change in output voltage (constant voltage mode) or cur-
rent (constant current mode) when varying the
AC
input voltage through
its
specified range with a fixed load.
(2)
Load Regulation: The change in output voltage (constant voltage mode) or
current (constant current mode) with a specified step change in load
resistance.
(3)
Ripple: Any
AC
component that rides on the
DC
output
of
the supply. It is
usually synchronized with the input AC source frequency.
-8-
AC
VOLT
METER
UNIT UNDER TEST
DC
AMMETER
Rs
CONSTANT CURRENT MEASUREMENTS
UNIT UNDER TEST
DC
AMMETER
VARIAC
---
SCOPE
AC
VOLT
METER
CONSTANT VOLTAGE MEASUREMENTS
FIGURE 1
.g.
[_DVM
SECTION 5
TROUBLE SHOOTING
5.1
GENERAL
If a
malfunction
is related
to
eitherSource A and/or Source
Band
the trouble shooter cannot
identify
readily the
output
that
causes the problem,
it
is suggested:
a)
Ascertain
that
the tracking
switch
is in the OFF position;
b)
Disable Source B by removing
F201
fuse on p.c. board and check Source A for proper
operation.
c)
Reinstall
F201.
Disable Source A by removing
F101
fuse on p.c. board and check
Source B for proper operation.
If neither
b),
nor
c),
indicate which Source is
malfunctioning,
there is a
possibility
that
the
problem
might
be caused by
th~
common overvoltage protection. Remove CR110, CR210,
CR211. If problem disappears, replace.
Since
this
equipment uses a quad operational
amplifier
to perform
multiple
functions, it
would be advantageous
to
try as a first step, changing
of
the
amplifier
on the
malfunctioning
output
to
see
if
the problem disappears. If so, there may not be any need for equipment
recalibration.
5.2 NO
DC
OUTPUT VOLTAGE ON ANY SOURCE
If POWER lamp
DSI
does not
light
check fuse
F1
and
Switch
S1.
If
F1
blows repeatedly,
check for defective transformer
T1
or components as follows:
Source A
Source B
Source C
C101, C109, CR101, CR106-CR109
C201,
C209, CR201, CR206-CR209
C301,
C313-C315, CR301, CR307
-1
0-
5.3 MALFUNCTION
OF
SOURCE
A,
B,
or
C
The
first
step in
trouble
shooting any Source is
to
make sure the B + regulated voltages
measured on
capacitors
"A"
C104,
"B"
C204,
"C"
C304 fall
within
12.4 VDC and 13.2 voe
and are very stable. If these voltages are present, the voltages across zener diodes
"A"
VR103,
"B"
VR203,
"C"
VR302, should fall between 5.0 and 5.8V. If these voltages
do
not fall
within
the tolerances specified,
check
for
defective
components as follows:
"A"
C101-C104, CR101, 0101, VR101, *VR102, VR103,
U101
"B"
C201-C204, CR201, 0201, VR201, *VR202, VR203,
U201
"C"
C301-C304, CR301, 0301, VR301, VR302, *VR303,
U301
*Note:
"A"
VR102,
"B"
VR202,
"C"
VR303, are the main reference voltage
of
the cor-
responding Source;
their
voltages
must
fall between 6.26V and 6.52VDC.
5.3.1
NO
DC
OUTPUT
If FAULT
display
is
off
and VOLTAGE control is clockwise,
check
blown secondary
protection on
"A"
F101,
"B"
F201,
"C"
F302;
if
fuse
blows
after
replacement, pro-
bable cause is shorted
transistor
as follows:
"A"
0102, 0103,
0104
"B"
0202, 0203,
0204
"C"
0303, 0304, 0306, 0307,
0308
If fuse is
not
blown, check
for
shorted feedback
capacitor
"A"
C111,
"B"
C211,
"C"
312.
If FAULT
display
is on, set the CURRENT and OV
controls
clockwise;
if
ammeter
shows
current reading, check
for
shorted component as
follows:
"A"
C401,
CR1101
CR211,
CR401
"B"
C402, CR210, CR211, CR402
"C"
C403, CR309, CR403,
0305
-11 -
6.1
GENERAL
SECTION 8
APPENDIX
This section contains the schematic diagram, a location
of
components drawing and
an
electrical parts list.
All electrical parts are listed in the sequence
of
their
circuit
designation numbers as shown
on
the schematic diagram.
All components used in the power supply or supplied as replacements are carefully in·
spected at the factory. Inspections are performed on a 100% basis or at AOL levels to
Military Specification MIL·0·9858 under which Power Designs, Inc. has been qualified.
All semiconductors are inspected on a 100% basis, not only for operating parameters, but
also for critical characteristics related to reliability and predicatable life expectancy. Some
of these characteristics are observed when the device is taken beyond its normal operating
regions. These test techniques have been developed under a "predictable reliability" pro·
gram in operation at Power Designs, Inc. for the past twelve years. Under this program, quali·
ty control procedures are constantly revalued and updated as advances are made in solid
state technology and experience is gained from field history.
Semiconductor manufacturers are continually modifying their products. Complete lines are
discontinued to be replaced by devices having improved gain, operating voltage levels and
frequency responses. The high gain, closed loop
DC
amplifiers used in regulator circuits are
particularly sensitive to slight changes in these parameters. Commercial or military
"equivalent" transistors may affect the performance
of
the power supply.
We
can assure
compliance with the original specifications
if
replacement semiconductors are ordered from
the factory.
All replacement semiconductors are processed and stocked at the factory in insure com-
plete interchangeability with the devices in the original equipment.
When ordering replacements, please identifythe device as thoroughly as possible, giving the
model and serial number
if
available.
·
12·
Circuit No.
A1
A2
A3
C1
CR307
CR308
CR309
DS1
DS101,
DS201
DS301
F1
M101,
M201
M301
0103,
0104
0203,
0204
0306
thru
0308
R134,
R135
R136
R237,
R238
R239
R342,
R343
R344
S1
S101,
S201
S202
S301
T1
ELECTRICAL PARTS LIST
MODEL TP-340
Description
Printed
Circuit
Board Assembly
Printed
Circuit
Board Assembly
Printed
Circuit
Board Assembly
Capacitor, ceramic disc, 0.022 uf, 1000 vdc
Bridge
rectifier
Diode,
silicon
Rectifier,
silicon
controlled
Pilot
light
assembly (NEON)
Pilot
light
assembly (LED)
Pilot
light
assembly (LED)
Fuse, 3A, 125V, Slo-Blo for models
with
115V input
Fuse, 1.5A, 250V, Slo-Blo for models
with
230V input
Meter, 0-32V, 0-1A
Meter, 0-15V, 0-5A
Transistor, silicon, NPN
Transistor, silicon, NPN
Transistor, silicon, NPN
Potentiometer, wirewound, 5K ohm, ± 10%, 2w
Potentiometer, wirewound, 5K ohm, ±
5%,
2w, 10t
Potentiometer, wirewound, 5K ohm, ± 10%, 2w
Potentiometer, wirewound, 5K ohm, ±
5%,
2w, 10t
Potentiometer, wirewound, 5K ohm, ± 10%, 2w
Potentiometer, wirewound,5K ohm, ±
5%,
2w, 10t
Switch, toggle, SPST
Switch, toggle, SPDT
Switch, toggle, DPDT
Switch, toggle, DPDT
Transformer,
For models
with
115V, 58-440 Hz input
For models
with
115
or
230V, 48-440
Hz
input
-13-
Part No.
PS-TP340-9
PS-TP340-8
PS-TP340-7
CC-A022-102
BR-252
SY241N
2N3897
PLA-24
LED-3
LED-3
MDX
MDX
MVA-169
MVA-170
MS1700G
MS1700G
2N6254
882012-1
RWV-502-3C10
882012-1
RWV-502-3C10
882012-1
RWV-502-3C10
ST-5
ST-37
ST-36
ST-39
TTM-TP340
TTM-TP340K
A1
ASSEMBLY
PRINTED CIRCUIT BOARD P/N PS·TP340·9
Circuit
No. Description Part No.
C101
Capacitor, electrolytic, 330 uf,
50
vdc CE-331-50-SE
C102, C103 Capacitor, tantalum, 1 uf,
50
vdc CE-1-500
C104 Capacitor, electrolytic, 100 uf,
25
vdc CE-101-25-SE
C105 Capacitor, ceramic disc,
0.01
uf, 100 vdc CC-A01-101
C106 Capacitor, ceramic disc, 100 pf, 1K vdc CC-A0001-102
C107 Not used
C108 Capacitor,
plastic
film,
0.001
uf, 200 vdc CP-24-2
C109 Capacitor, electrolytic, 2200 uf, 63 vdc CE-222-63-SE
C110 Capacitor, ceramic disc,
0.01
uf, 100 vdc CC-A01-101
C111
Capacitor, tantalum, 1 uf,
50
vdc CE-1-500
C201
Capacitor, electrolytic, 330 uf,
50
vdc CE-331-50-SE
C202, C203 Capacitor, tantalum, 1 uf,
50
vdc CE-1-500
C204 Capacitor, electrolytic, 100 uf,
25
vdc CE-101-25-SE
C205 Capacitor, ceramic disc,
0.01
uf, 100 vdc CC-A01-101
C206 Capacitor, ceramic disc, 100 pf, 1K vdc CC-A0001-102
C207 Not used
C208 Capacitor,
plastic
film,
0.001
uf, 200 vdc CP-24-2
C209 Capacitor, electrolytic, 2200 uf, 63 vdc CE-222-63-SE
C210 Capacitor, ceramic disc,
0.01
uf, 100 vdc CC-A01-101
C211
Capacitor, tantalum, 1 uf,
50
vdc CE-1-500
CR101
thru
CR105 Diode,
silicon
Gl44
CR106 thru
CR109 Diode,
silicon
Sl5A2
CR110 Rectifier,
silicon
controlled C13F
CR111
Not used
CR112 Diode,
silicon
Gl44
CR201
thru
CR205 Diode,
silicon
Gl44
CR206 thru
CR209 Diode,
silicon
Sl5A2
CR210 Rectifier,
silicon
controlled C13F
CR211
Rectifier,
silicon
controlled C122B
CR212 Diode,
silicon
G144
F101
Fuse, 2A, 250V, Slo-Blo MDX
F201
Fuse, 2A, 250V, Slo-Blo MDX
Q101
Transistor,
silicon
NPN MS1700G
Q102 Transistor,
silicon
NPN 2N2219A
Q201
Transistor,
silicon
NPN MS1700G
Q202 Transistor,
silicon
NPN 2N2219A
R101
Resistor, metal film, 3.92K ohm, ± 1%,
%w
RD-3921-1QA
R102 Resistor, metal film, 1.5K ohm,
±1%,
%w
RD-152-1QA
R103 Resistor, metal fiIm, 845 ohm, ± 1%, %w RD-8450-1QA
R104,
R105
Resistor, metal film,
12.1Kohm,
±1%,
%w
RD-1212-1QA
R106 Resistor, metal film, 453 ohm,
±1%,
%w
RD-4530-1
QA
R107 Resistor, metal film, 1.5K ohm,
±1%,
%w
RD-152-1QA
R108 Resistor, metal film, 845 ohm,
±1%,
%w
RD-8450-1
QA
R109 Resistor, metal film, 1.05K ohm, ± 1
%,
%w
RD-1051-1QA
R110 Resistor, metal film, 100 ohm,
±1%,
%w
RD-101-1QA
R111
Resistor, metal oxide, 2.2 ohm, ±
5%,
3w RD-2F2-3KA
R112 Resistor, metal oxide, 1 ohm, ±
5%,
3w
RD-010-3KA
R113 Resistor, metal oxide,
0.51
ohm, ±
5%,
3w RD-F51-3KA
R114 Resistor, cermet, trimmer, 200 ohm, ± 10%,
%w
883004-6
R115 Resistor, metal film,
365ohm,±1
%,
%w
R
D-3650-1
QA
R116 Resistor, metal film,
1.05Kohm,
±1%,
%w
RD-1051-1QA
R117 Resistor, metal film, 27.4 ohm, ± 1%,
%w
RD-27F4-1 QA
-1
4-
Circuit
No.
R118
R119
R120
R121
R122,
R123
R124
R125
R126,
R127
R128
R129
R130
R131
R132
R133
R201
R202
R203
R204,
R205
R206
R207
R208
R209
R210
R211
R212
R213
R214
R215
R216
R217
R218
R219
R220
R221
R222,
R223
R224
R225
R226,
R227
R228
R229
R230
R231
R232
R233
R234
R235
R236
U101
U201
VR101
VR102
VR103
VR201
VR202
VR203
* Matched
to
within
± .5%
A1
ASSEMBLY
PRINTED CIRCUIT BOARD P/N PS·TP340·9
Description
Resistor, metal film, 75K ohm, ± 1%,
%w
Resistor, cermet, trimmer, 100K ohm, ± 10%,
1/zw
Resistor, metal film,
511
ohm,
±1%,
%w
Not used
Resistor, metal film,
12.1
Kohm,
± 1%, 1
/4W
Resistor, metal film, 1.05K ohm, ± 1%, %w
Resistor, composition, 3.3K ohm, ± 10%,
1/zw
Resistor, metal film, 1.05K ohm,
±1%,
%w
Resistor, metal film, 12.1K ohm,
±1%,
%w
Resistor, cermet, trimmer, 2K ohm, ± 10%,
1/zw
Resistor,
composition,
3.3K ohm, ± 10%,
1/zw
Resistor, metal film, 3.92K ohm, ± 1%,
%w
Resistor, wirewound,
47
ohm, ± 10%, 1w
Resistor, metal film, 475K ohm, ± 1%,
%w
Resistor, metal film, 3.92K ohm,
±1%,
%w
Resistor, metal film, 1.5K ohm, ± 1%, %w
Resistor, metal film, 845 ohm,
±1%,
%w
Resistor, metal film, 12.1K ohm, ± 1%,
%w
Resistor, metal film, 453 ohm, ±
1%,
%w
Resistor, metal film, 1.5K ohm, ±
21
%, %w
Resistor, metal fiIm, 845 ohm, ± 1%, %w
Resistor, metal fiIm, 1.05K ohm, ± 1%, %w
Resistor, metal film, 100 ohm,
±1%,
%w
Resistor, metal oxide, 2.2 ohm, ±
5%,
3w
Resistor, metal oxide, 1 ohm, ±
5%,
3w
Resistor, metal oxide,
0.51
ohm, ±
5%,
3w
Resistor, cermet, trimmer, 200 ohm, ± 10%,
1/zw
Resistor, metal film, 365 ohm, ± 1%, %w
Resistor, metal film, 1.05K ohm, ± 1%,
%w
Resistor, metal film, 27.4 ohm,
±1%,
%w
Resistor, metal film, 75K ohm, ± 1%,
%w
Resistor, cermet, trimmer, 100K ohm, ± 10%,
1/zw
Resistor, metal film,
511
ohm,
±1%,
%w
Not used
Resistor, metal film,
12.1
Kohm,
± 1%,
%w
Resistor, metal film, 1.05K ohm, ± 1%,
%w
Resistor,
composition,
3.3K ohm, ± 10%,
1/zw
Resistor, metal film,
1.05Kohm,
±1%,
%w
Resistor, metal film,
12.1
Kohm,
± 1%,
%w
Resistor, cermet, trimmer, 2K ohm, ± 10%,
1/zw
Resistor, composition, 3.3K ohm, ± 10%,
1/zw
Resistor, metal film, 3.92K ohm, ± 1%,
%w
Resistor, wirewound,
47
ohm, ± 10%, 1w
Resistor, metal film, 100 ohm,
±1%,
%w
Resistor, cermet, trimmer,
200
ohm, ± 10%,
1/zw
Resistor, metal film, 12.1K ohm,
±0.5%,
%w
Resistor, metal film, 12.1K ohmn,
±0.5%,
%w
Quad operational
amplifier
Quad operational
amplifier
Diode, silicon, zener
Diode, silicon, zener
Diode, silicon, zener
Diode, silicon, zener
Diode, silicon, zener
Diode, silicon, zener
-15-
Part No.
RD-753-1QA
883004-10
RD-5110-1QA
RD-1212-1QA
RD-1051-1
QA
E83321
RD-1051-1QA
RD-1212-1QA
883004-5
E83321
RD-3921-1QA
RW-470-48AFS
RD-4753-1QA
RD-3921-1QA
RD-152-1QA
R
D-8450-1
QA
RD-1212-1QA
RD-4530-1
QA
RD-152-1QA
RD-8450-1QA
RD-1051-1
QA
RD101-1QA
RD-2F2-3KA
Rd-010-3KA
RD-F51-3KA
883004-6
RD-3650-1QA
RD-1051-1QA
RD-27F4-1QA
RD-753-1QA
883004-10
RD-5110-1
QA
RD-1212-1QA
RD-1051-1QA
E83321
RD-1051-1QA
RD-1212-1QA
883004-5
E83321
RD-3921-1QA
RW-470-48AFS
RD-101-1QA
883004-6
* RD-1212-1QA
* RD-1212-1QA
A65802
A65802
DZE
thru G
1N825G thru K
3EZ5.6D5
DZE
thru G
1N825G thru K
3EZ5.6D5
Circuit
No.
C301
C302, C303
C304
C305
C306
C307
C308
C309
C310
C311
C312
C313 thru C315
C316 thru C338
C339.
CR301
thru
CR306
F301
Q301
Q302
Q303
Q304
Q305
R301
R302
R303
R304,
R305
R306
R307
R308
R309
R310
R311
R312
R313
R314
R315
R316
R317
R318
R319
R320
R321
R322
R323
R324
R325
R326
R327
R328
R329
R330
A2 ASSEMBLY
PRINTED CIRCUIT BOARD P/N PS·TP340·8
Description
Capacitor, electrolytic, 330 uf,
50
vdc
Capacitor, tantalum, 1 uf,
50
vdc
Capacitor, electrolytic, 100 uf,
25
vdc
Capacitor, ceramic disc, 100 pf,1K vdc
Capacitor, ceramic disc, 100 pf, 1K vdc
Not used
Capacitor,
plastic
film,
0.001
uf, 200 vdc
Capacitor, ceramic disc, 680 pf, 1K vdc
Capacitor, tantalum, 1 uf,
50
vdc
Capacitor,
plastic
film,
O.Q1
uf, 200 vdc
Capacitor, tantalum, 1 uf,
50
vdc
Capacitor, electrolytic, 10,000 uf,
25
vdc
Not
used
Capacitor, ceramic disc,
0.01
uf, 100 vdc
Diode,
silicon
Fuse,
BA,
32V, Slo-810
Transistor, silicon, NPN
Transistor, silicon, PNP
Transistor, silicon, NPN
Transistor, silicon, NPN
Transistor, silicon, PNP
Resistor, metal film, 3.92K ohm, ± 1
%,
%w
Resistor, metal film, 1.5K ohm, ± 1
%,
%w
Resistor, metal film, 845 ohm, ± 1
%,
%w
Resistor, metal film, 12.1Kohmn,
±1%,
%w
Resistor, metal film, 1.05K ohm, ± 1
%,
%w
Resistor, metal film, 845 ohm, ± 1
%,
%w
Resistor, metal film, 12.1K ohm, ±
1%,
%w
Resistor, metal film, 4.42K ohm, ± 1
%,
%w
Resistor, metal film, 75K ohm, ± 1
%,
%w
Resistor, cermet, trimmer, 100K ohm, ±
10%,
1hw
Resistor,
metal
film,
511
ohm,
±1%,
%w
Not
used
Resistor, metal film, 475K ohm, ± 1
%,
%w
Resistor, metal film, 4.42K ohm, ± 1
%,
%w
Resistor, metal film, 27.4 ohm, ± 1
%,
%w
Resistor, metal film, 3.24K ohm, ± 1%,
%w
Resistor, cermet, trimmer, 200 ohm, ±
10%,
1hw
Resistor, metal film, 27.4 ohm,
±1%,
%w
Resistor, metal film, 475K ohm, ± 1
%,
%w
Resistor, metal film, 3.24K ohm, ± 1
%,
%w
Resistor, metal film, 12.1Kohm,
±1%,
V4W
Resistor, composition, 3.3K ohm, ±
10%,
1hw
Resistor, metal film, 1.05K ohm, ± 1%,
%w
Resistor, metal film, 29.4K ohm, ± 1%,
%w
Resistor, cermet trimmer, 2K ohm, ± 10%, 1hw
Resistor, metal film, 1.05K ohm,
±1%,
V4W
Resistor, metal film, 100 ohm,
±1%,
%w
Resistor, metal film,
34
ohm, ± 1
%,
V4W
Resistor, metal oxide, 0.2 ohm, ±
5%,
3w
-16-
Part No.
CE-331-50-SE
CE-1-500
CE-101-25-SE
CC-A0001-102
CC-A0001-102
CP-24-2
CC-680P-102
CE-1-500
CP-16-2
CE-1-500
CE-103-25-SE
CC-A01-101
Gl44
MDL
MS1700G
2N2905A
2N2219A
MS1700G
2N2905A
RD-3921-1QA
RD-152-1QA
RD-8450-1QA
RD-1212-1QA
RD-1051-1
QA
RD-8450-1QA
RD-1212-1QA
RD-4421-1QA
RD-753-1QA
883004-10
RD-5110-1QA
RD-4753-1QA
RD-4421-1
QA
RD-27F4-1QA
RD-3241-1QA
883004-6
RD-27F4-1QA
RD-4753-1QA
RD-3241-1
QA
RD-1212-1QA
E83321
RD-1051-1QA
RD-2942-1
QA
883004-5
RD-1051-1QA
RD-101-1QA
RD340-1QA
RD-F2-3KA
Circuit No.
R331
R332
R333
R334
R335
R336
R337
R338
R339
R340
R341
U301
VR301
VR302
VR303
A2 ASSEMBLY
PRINTED CIRCUIT BOARD P/N PS·TP340·8
Description
Resistor, metal film,
511
ohm, ± 1%,
V..w
Resistor, metal film, 27.4 ohm,
±1%,
1f4W
Resistor, wirewound,
0.1
ohm, ± 10%, 7w
Resistor, cermet, trimmer,
200
ohm, ± 10%,
%w
Resistor, metal film,
365
ohm, ± 1%,
V..w
Resistor, metal film, 100 ohm,
±1%,
%w
Resistor, wirewound, 10 ohm, ± 10%, 1w
Resistor, metal film, 100 ohm, ± 1
%,
1
/4W
Not used
Resistor, metal film, 6.34K ohm, ± 1%,
V..w
Resistor, wirewound,
0.1
ohm, ± 10%, 7w
Quad operational amplifier
Diode, silicon, zener
Diode, silicon, zener
Diode, silicon, zener
-17-
Part No.
RD-5110-1QA
RD-27F4-1QA
RW-F1-4RA
883004-6
RD-3650-1QA
RD-101-1QA
RW-100-4BAFS
RD-101-1QA
RD-6341-1
QA
RW-F1-4RA
A65802
DZE
thru G
3EZ5.6D5
1N825 G thru K
Circuit
No.
C401, C402
C403
C404, C405
CR401
thru
CR403
R401
R402
R403
R404
R405
R406
A3
ASSEMBLY
PRINTED CIRCUIT BOARD P/N PS·TP340·7
Description
Capacitor, electrolytic, 220 uf,
50
vdc
Capacitor, electrolytic, 470 uf,
25
vdc
Capacitor, ceramic disc, 0.02 uf, 500 vdc
Diode,
silicon
Resistor, cermet,
trimmer
5K ohm, ±
10%,
1/zw
Resistor, metal film, 29.4K ohm, ± 1%,
%w
Resistor, cermet,
trimmer
5K ohm, ±
10%,
1/zw
Resistor, metal film, 29.4K ohm, ± 1%,
114
w
Resistor, cermet,
trimmer
5K ohm, ± 10%,
1/zw
Resistor, metal film,
12.1Kohm,
±1%,
%w
-18-
Part No.
CE-221-50-SE
CE-471-25-SE
CC-23-5
Sl5A2
883004-4
RD-2942-1QA
883004-4
RD-2942-1
QA
883004-4
RD-1212-1QA
This manual suits for next models
1
Table of contents
Other POWER DESIGNS Power Supply manuals
