You’ve seen references to “impedance” and “ohms” in various loudspeaker specifications or in your owner’s manual for an AV receiver. But what is it? Do you have to “match” speaker impedance to your AV ...

A cascode configuration reduces reference modulation error in a 4-20 mA current mirror, improving active impedance by orders of magnitude.

Have you ever wondered what makes a loudspeaker “difficult to drive”? Do you wonder what’s so special about an amplifier that is stable into a 4 ohm load? If these are the kinds of questions that ...

When shopping for loudspeakers or headphones, most consumers don’t even look at the impedance of the products they are considering. Do they need to? What is Impedance? Glad you asked. Most consumers ...

All engineers know resistance is usually bad news. It generates heat. It reduces efficiency. It wears out components and cuts operational lifetimes. However, resistance is not the only kind of ...

Understanding the causes, similarities, and differences between current and voltage distortion will help you pinpoint most power quality problems. When a writer or speaker mentions harmonic distortion ...

Editor’s note: A little while ago we published Part 1and Part 3 of this three-part series is also published. The fundamentals to translating the analog world into the digital domain reduces to a ...