amplifiers
Audio amplifiers: How much power (and at what tradeoffs) is really required?
My first proper audio setup, discounting the GE Wildcat record player I had as a kid: was a JVC PC-11 portable stereo system (thank goodness for Google Image Search to refresh my memory!), an example of which my (Catholic) high school chaplain owned, played (George Winston tapes, to be precise) in the background during weekly…
Power amplifiers that oscillate—deliberately. Part 1: A simple start.
Editor’s Note: This DI is a two-part series. In Part 1, Nick Cornford deliberately oscillates the TDA7052A audio power amplifier to produce a siren-like sound and, given the device’s distortion characteristics, a functional Wien bridge oscillator. In Part 2, Cornford minimizes this distortion and adds amplitude control to the circuit. When audio power amplifiers oscillate,…