Dc to Pulse Width Modulator K8004 ILLUSTRATED ASSEMBLY MANUAL H8004IP-2 Total solder points: 82 Difficulty level: beginner 1 2 3 4 5 adva
10 PCB 17. PCB P8004'2
11 18. Schematic diagram. Schematic diagram T1 D2 D1
Modifications and typographical errors reserved © Velleman Components nv. H8004IP - 2003 - ED3 VELLEMAN Components NV Legen Heirweg 33 9890 Gavere Bel
2 Features: PWM range: 0 to 100%. PWM frequency: 100 to 5000Hz adjustable. Minimum PWM offset: 0 to 20% adjustable. Adjustable sensitivity:
3 Assembly hints 1. Assembly (Skipping this can lead to troubles ! ) Ok, so we have your attention. These hints will help you to make this project s
4 Assembly hints 1.3 Soldering Hints : 1- Mount the component against the PCB surface and carefully solder the leads 2- Make sure the solder j
5 R1 : 220 (2-2-1-B) R2 : 220 (2-2-1-B) R3 : 2K2 (2-2-2-B) R4 : 2K2 (2-2-2-B) R5 : 10K (1-0-3-B) R6 : 100K (1-0-4-B)
6 Construction T1 : BC547 7. Transistor C5 : 10µ F C6 : 10µ F C7 : 100µ F (40Vmin) 8. Electrolytic capacitor. Watch the polarity ! C...
7 Test 14. Test Connect the supplied 4k7 resistor between the + and - points of the load. Connect the Vref point to the DC input. Set preset RV3
8 Different configurations Figure A : Standard configuration, use a separate control voltage. Figure B : Connection to one of the analogue o
9 Setting up 16. Setting up RV1: setting the minimum output voltage. Set the control voltage to zero (perhaps by disconnecting it). An initial pre-v
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