One of my first jobs as a freshly minted graduate engineer involved the maintenance of a set of analogue chart recorders. They were museum pieces by the early 1990s: a motorized roll of graph paper ...

JOHN M. CONLY is a former New York and Wadhington newspaper man note editor of High Fidelity Magazine. “They Shall Have Music" in a quarterly feature in the Atlantic. (This is the third of four ...

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 ...

IN CONSUMER ELECTRONICS APPLICATIONS, which tend to be lower in frequency and less demanding than typical clock-buffering applications, inexpensive high-speed op amps (~100-MHz bandwidth) can offer an ...

Zero-drift amplifiers dynamically correct their offset voltage and reshape noise density. Two commonly used types—auto-zero amplifiers and choppers—achieve nanovolt-level offsets and extremely low ...

Remember the days when you strung two tin cans together to make a telephone? Unfortunately, cell phone audio can sound a lot like those tin cans because of the miniaturization of devices, including ...