A little of the old, a little of the new—here's a quick brushup on amplifier lore. Amplifiers are fundamental circuit-design elements. They drive everything from earbuds to antennas. Placed ahead of ...

A class-A amplifier is defined as an amplifier that is biased so that the output current flows at all times. Thus, the input signal-drive level to the amplifier is kept small enough to avoid driving ...

Learn how power amplifiers work, the common types, and what to lookout for when shopping for amps. You have to find out if the amplifier is a Class A/B analog amp or a Class D digital amplifier before ...

NAD Electronics introduced the C 268 stereo amplifier for audiophiles seeking versatility. It can be used in a traditional setup with a preamplifier, for biamping loudspeakers or as a slave amp. C 268 ...

ALEXANDRIA, Va.—William H. Doherty was an engineer with Bell Telephone Laboratories in 1936 when he invented a circuit that used two tubes running in Class B configuration to act as a linear amplifier ...

In just a few years’ time, so many things about wireless communication will be different from the way we know them today. Cellular networks, for example, traditionally made up primarily of larger base ...

The Doherty amplifier idea isn’t new: this modified class-B radio-frequency power amplifier (RF PA) configuration was devised by William H. Doherty of Bell Telephone Laboratories Inc in 1936, back in ...