MOSFET Tester Circuit Using IRFZ44N for Electronics Projects

DIY MOSFET test project

The circuit of the MOSFET Tester Using IRFZ44N is a basic circuit that can be used to test the operation of IRFZ44N and other N-channel MOSFETs of this type. It enables hobbyists and electronics enthusiasts to test whether a MOSFET is able to switch correctly and to tap current loads. The principle of operation of the tester is that the tester is used by giving a gate voltage to the MOSFET and linking a load to the circuit, e.g., an LED or a small DC motor. Once the gate is connected to a high enough voltage, the MOSFET will become conductive, permitting current to pass through the load. When the gate voltage is removed, the MOSFET is gated off. The project is ideal for students, DIY lovers, and hobbyists in the field of electronics. It is also tiny, only requires a few parts, and can be assembled on a breadboard or small PCB. MOSFETs should be tested before their use in more complex circuits in order to prevent their destruction and to guarantee that they will work properly. Modification of the loading resistor or the supply voltage is useful in testing varying ratings of MOSFETs safely.