Tuesday, May 24, 2011

Armstrong's Circuit

In light of the complex circuitry employed in most of today's television's and stereos, Armstrong's superheterodyne circuit seems remarkably simple and essential. And the circuit has survived because of its economy. It does its job simply and elegantly. Today it forms the basis of the tuner found in virtually every radio and television, as well as in such other devices as radar detectors and police scanners.

Empire Of The Air
The Men Who Made Radio
By Tom Lewis

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