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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 to the middle of its adjustment range.

Connect a DC voltage between 8 and 35V with the V and GND.

Measure between the + and - points of LOAD with a voltmeter (set to read DC voltage).

If everything goes well then the voltage on the output can be adjusted with RV2.

Fig 1.0

Содержание K8004

Страница 1: ...Dc to Pulse Width Modulator K8004 ILLUSTRATED ASSEMBLY MANUAL H8004IP 2 Total solder points 82 Difficulty level beginner 1 2 3 4 5 advanced Allows very efficient control of DC motors heaters or lights...

Страница 2: ...et 0 to 20 adjustable Adjustable sensitivity 2 5 to 35VDC Short circuit protection Overload protection 6 5A Specifications Power Supply 8 to 35VDC unregulated Supply current No load 35mA typ Efficienc...

Страница 3: ...he 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 ha...

Страница 4: ...the PCB surface and carefully solder the leads 2 Make sure the solder joints are cone shaped and shiny 3 Trim excess leads as close as possible to the solder joint REMOVE THEM FROM THE TAPE ONE AT A...

Страница 5: ...0K 2 2 4 B 2 Resistors R Construction D1 1N4148 D2 1N4148 D3 1N4007 1 Diodes Watch the polarity D CATHODE IC1 16P 3 IC socket Watch the posi tion of the notch RV1 10K RV2 10K RV3 250K RV 4 Trim potent...

Страница 6: ...citor Watch the polarity C D4 6A2 6A6 9 Diode check the polarity D CATHODE J1 2p J2 2p J3 2p 10 Screw connectors R8 0 22 R22 R9 0 22 R22 R10 0 22 R22 11 5W Resistors R 2mm R T2 BUK9535 55 or eq 12 Tra...

Страница 7: ...nt to the DC input Set preset RV3 to the middle of its adjustment range Connect a DC voltage between 8 and 35V with the points V and GND Measure between the and points of LOAD with a voltmeter set to...

Страница 8: ...ntrolled with the demo program dimmer The circuit can also be tested with the test program of the K8000 Figure C Internal reference voltage used as control voltage 15 Different configurations SUPPLY P...

Страница 9: ...halogen lamps in order to pre heat the filament RV2 setting the maximum output voltage Set the control voltage to the maximum voltage that you are going to use The maximum output voltage can be adjus...

Страница 10: ...10 PCB 17 PCB P8004 2...

Страница 11: ...11 18 Schematic diagram Schematic diagram T1 D2 D1...

Страница 12: ...ions and typographical errors reserved Velleman Components nv H8004IP 2003 ED3 VELLEMAN Components NV Legen Heirweg 33 9890 Gavere Belgium Europe www velleman be www velleman kit com 5 4 1 0 3 2 9 2 9...