Q: I would like to purchase a circuit tester for my tool kit, but I'm a little confused. I see three types at the hardware store — a small, cheap-looking tester; one that looks like a pen; and a ...

These instruments also have a voltage-indicating threshold of approximately 60V and a relatively low-impedance inductive load that can cause undesirable transients or distort the waveform of the ...

Testing relays and their circuits in vehicles doesn’t always require a trip to the bench. With a few simple tools and knowledge, this video shows how to test relays directly in your car using a test ...

This is a multifunction RJ45 network cable tester. It is the design of the network cable (RJ45) test, and telephone (RJ11). It is cheap and easy to use.

Most circuit tracers receive signals using a single axis sensor, which can make tracing hidden wires more challenging if they are not run in a vertical or horizontal direction — or if there are ...

An uncomplicated circuit application of a ZD is the common shunt voltage regulator. If you have a Zener diode (ZD) of unknown characteristics or if you want to use reverse-biased transistor junctions ...