Branch circuits are undoubtedly the most commonly installed circuits in both residential and non-residential applications. And, since they supply the equipment that utilizes the electricity, they are ...

A variable frequency drive (VFD) fails to vary the discharge-air fan speed. A motor overheats and fails prematurely. Programmable controls that generally operate without issue suddenly experience ...

When you get the call, “The motor won’t start,” you’d best have a logical and systematic plan in place to approach the problem. “Easter egging” just doesn’t work unless you happen to be very lucky!

Transmitter power is not the sole issue, but rather a combination of power and proximity. The lowly cell phone a few inches away may cause more problems than the broadcast transmitter a mile away. The ...

The SureTrace™ Circuit Tracer Pro redefines what a circuit tracer can do. With numerical voltage readings, continuity testing, AC amperage readings, contactless tracing, and receptacle testing, it's ...

Apple's power adapters for its laptops can suddenly stop working. Here are some options you can try to overcome this. Topher, an avid Mac user for the past 15 years, has been a contributing author to ...

Integrated circuits (IC) serve as the backbone of any information system and mobile devices. This course provides an in-depth review of the advanced technology in ...