While using a digital multimeter to diagnose electrical problems on customers’ equipment, I frequently hear the comment, “I’ve got one of those multimeter things, but I never learned how to use it.” ...

How do you know if a resistor is correctly restricting the flow of electricity? Using a multimeter is an obvious answer. However, there is more to it than meets the eye. This article will explain what ...

Q: My wife wanted me to install a dimmer switch in our dining room — and now the chandelier works only half the time. Two switches in the room control the light. Since I tried to install the dimmer, ...