Simple, resistor based Dummy Load

Another afternoon project. Some time ago I was working on a 80 watts 12-to-36 Volts DC-DC boost converter. Not one of my most successful projects but anyway.

_MG_0936

So I needed some kind of load but my home made constant current dummy load can only handle 20-something volts. A few 100 ohms 15 watt resistors were just what I needed. So I took 6 of them and made a simple, single-sided PCB that holds the resistors as well as 6 switches.

_MG_0937

The resistors are upright and have a bit of an air gap between them. That’s important, they get incredibly hot with 36 volts accross them. I know, I had to learn the hard way 😉

_MG_0938

Together with the aluminium front it has a nice weight for its size and with it’s silicone feet it sits firmly on the bench.

_MG_0939

11 thoughts on “Simple, resistor based Dummy Load”

  1. Hello
    Could you please send me the pcb layout and the list of components?
    Thank you

  2. This looks exactly like the dummy load that I can use for testing my own power supply. Simple and effective!

    Could you please send me the pcb layout? It would be greatly appreciated.

    Best regards

  3. could you send me the pcb layout and the list of components? thank you

  4. Please send me the pcb layout and the list of components?

    the gerber file would be much appreciated.

    thank you
    Johnny

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