Velleman-Kit K2637 User manual

Total solder points: 44
Skill level :
Beginner 1o2þ3o4o5oAdvanced
MANUAL H2637-ED1
K2637
SUPER MINI 2.5W AUDIO POWER AMPLIFIER
Manual
Specifications :
þMax. output power : 2.5W (4Ω/12V)
þFrequency response : 60Hz -15KHz
þInput sensitivity : 20-150mV selectable
þThermal and short circuit protection
þPower supply : 4.5 -15VDC /400mA
þQuiescent current : 12mA
þDimensions : 42x32mm (1.65”x1.25”)
modifications reserved
Applications :
þSmall but powerful multi-purpose amplifier
þFor use with portable audio equipment
þPower amplifier for audio projects
þIn-car use
þYour own unique application

5%
4K7= ( 4 - 7 - 2 - B )
1%
4K7= ( 4 - 7 - 0 - 1 - 1 )
COLOR= 2… 5
IPESF SDK NDGB FNL
C
O
D
E
CODICE
COLORE
CODIGO
DE
CORES
CODIGO
DE COL-
ORES
VÄRI
KOODI
FÄRG
SCHEMA
FARVE
KODE
FARGE
KODE
FARB
KODE
COLOUR
CODE CODIFI-
CATION
DES
COU-
LEURS
KLEUR
KODE
C
O
D
E
0
Nero Preto Negro Musta Svart Sort Sort Schwarz Black Noir Zwart 0
1
Marrone Castanho Marrón Ruskea Brun Brun Brun Braun Brown Brun Bruin 1
2
Rosso Encarnado Rojo Punainen Röd Rød Rød Rot Red Rouge Rood 2
3
Aranciato Laranja Naranjado Oranssi Orange Orange Orange Orange Orange Orange Oranje
3
4
Giallo Amarelo Amarillo Keltainen Gul Gul Gul Gelb Yellow Jaune Geel 4
5
Verde Verde Verde Vihreä Grön Grøn Grønn Grün Green Vert Groen 5
6
Blu Azul Azul Sininen Blå Blå Blå Blau Blue Blue Blauw 6
7
Viola Violeta Morado Purppura Lila Violet Violet Violet Purple Violet Paars 7
8
Grigio Cinzento Gris Harmaa Grå Grå Grå Grau Grey Gris Grijs 8
9
Bianco Branco Blanco Valkoinen Vit Hvid Hvidt Weiss White Blanc Wit 9
A
Argento Prateado Plata Hopea Silver Sølv Sølv Silber Silver Argent Zilver A
B
Oro Dourado Oro Kulta Guld Guld Guldl Gold Gold Or Goud B

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3
1. Assembly (Skipping this can lead to troubles ! )
Ok, so we have your attention. These hints will help you to make this project successful.
Read them carefully.
1.1 Make sure you have the right tools:
•A good quality soldering iron (25-40W) with a
small tip.
•Wipe it often on a wet sponge or cloth, to keep
it clean; then apply solder to the tip, to give it a
wet look. This is called ‘thinning’ and will protect the tip, and enables you to make good connections. When sol-
der rolls off the tip, it needs cleaning.
•Thin raisin-core solder. Do not use any flux or grease.
•A diagonal cutter to trim excess wires. To avoid injury
when cutting excess leads, hold the lead so they can-
not fly towards the eyes.
•Needle nose pliers, for bending leads, or to hold components in place.
•Small blade and phillips screwdrivers. A basic range is fine.
For some projects, a basic multi-meter is required, or might be
handy
1.2 Assembly Hints :
þMake sure the skill level matches your experience, to avoid disappointments.
þFollow the instructions carefully. Read and understand the entire step before you perform each operation.
þPerform the assembly in the correct order as stated in this manual
þPosition all parts on the PCB (Printed Circuit Board) as shown on the drawings.
þValues on the circuit diagram are subject to changes.
þValues in this assembly guide are correct*
þUse the check-boxes to mark your progress.
þPlease read the included information on safety and customer service
* Typographical inaccuracies excluded. Always look for possible last minute manual updates, indicated as ‘NOTE’
on a separate leaflet.
1.3 Soldering Hints :
Mount the component against the
PCB surface and carefully solder the
leads
Make sure the solder joints are
cone-shaped and shiny
Trim excess leads as close as pos-
sible to the solder joint
0.000

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4
1. RESISTORS
R...
qR1 : 330K (3 -3 -4 -B)
qR2 : 5K6 (5 -6 -2 -B)
qR3 : 4E7 (4 -7 -B -B)
2. ELECTROLYTIC CAPACI-
TORS (Check the polarity)
C...
qC1 : 1µF
qC2 : 1µF
qC7 : 100µF
qC9 : 10µF
qC10 : 1000µF
3. CAPACITORS
C...
qC3 : 100pF (101)
qC4 : 100nF (0.1µF; µ1; 104)
qC5 : 1.8nF (182; 1800)
qC6 : 220nF (224; 0.22µ; µ22)
qC8 : 100nF (0.1µF; µ1; 104)
4. IC
qIC1 : TDA1015
6. PCB TERMINALS
q

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5
7. CONNECTION EXAMPLE LOW LEVEL INPUT
4/8 OHM SPEAKER
+
-
+
-
4.5 .. 15VDC
Dynamic microphone
+
-
JUMPER
8. CONNECTION EXAMPLE HIGH LEVEL INPUT
CD PLAYER
TAPE RECORDER
VIDEO RECORDER
COMPUTER
…
4/8 OHM SPEAKER
+
-
+
-
4.5 .. 15VDC
NO JUMPER
47K ohm log
VOLUME

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6
9. PCB LAYOUT
10. DIAGRAM