Some kind of continuity beeper has been a standard piece of gear since the dawn of electronics. Sure, you probably have an ...

You feel the chill, grab a compact heater, and plug it in without a second thought. The room warms up, the glow looks ...

While standard receptacles typically use three wires -- hot, neutral and ground -- you'll occasionally find 2-prong outlets in older homes. Since this type of outlet lacks a ground connection, the ...

Let's be honest here. Most homeowners think they can save a few bucks by tackling electrical projects themselves. I mean, ...

The US town of Bristol, population around 44,000, is a divided community.

The Scandinavian hi-fi company Hegel has been around for over 30 years and is best known for making high-end yet bespoke audio components for serious audiophiles. Its latest integrated amplifier, the ...

Andy recommends favorite resources for basic op amp circuits and includes a portion of TI's AN-20. Test your knowledge with our op amp quiz; answer explanations are included. By 1969, a fledgling ...

Operational amplifiers (op amps) are almost the perfect amplifier. As long as you keep a few important details in mind, their imperfections will seem invisible. Figure 1. This simple non-inverting op ...