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Electronic Adjustable Load

Built adjustable electronic dummy load based on power MOSFET.

Original circuit is from

Used IRFZ44N MOSFET salvaged from an old UPS. Used 7.5V Zener as MOSFET is regular one (not logic level).

Here is the one I built.

Used Aluminium block heat sink salvaged from old UPS. It is good for small load testing. I will attach larger heat sink with extra two screw holes it has, which would be required for high current testing.