4. The In-Circuit Test Method This method involves testing a transistor within its circuit using an oscilloscope. By monitoring the voltages and waveforms at different points in the circuit, you can ...

This simple circuit has helped me out on many occasions. It is able to check transistors, in the circuit, down to 40 ohms across the collector-base or base-emitter junctions. It can also check the ...

Transistor Tester Design A three-legged transistor or FET can be connected in six possible configurations, but only one is correct. This compact circuit offers a straightforward and reliable way to ...

In-Circuit Transistor Tester In-Circuit Transistor Tester 46 IN-CIRCUIT TRANSISTOR TESTER by A. Rigby In electronic troubleshooting a transistor is generally not above suspicion until it responds ...

Most likely the transistor is shorted. Put your meter in Diode check mode and start checking lead to lead. If it reads 0 bingo! You can do this with the xistors in circuit.

If you ever work with a circuit that controls a decent amount of current, you will often encounter a FET – a Field-Effect Transistor. Whether you want to control a couple of powerful LEDs ...