A.C. Generator for Automobiles

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A.C. Generator for Automobiles

Post by KirtB » Wed Jul 26, 2017 9:55 pm

A.C. Generator for Automobiles, March 1948 Radio Craft

AC alternators replaced DC generators back in the 1940s as demand for conditioned electrical power in vehicles rose beyond that needed for ignition and lighting. Radios are the most notable additions, and because AM broadcasts were the dominant method of the day for commercial stations, noiseless electrical supplies were required. Spark-induced noise from ignition systems was bad enough since its frequency varied with engine RPM, but the DC generator's commutator sparking noise - much of it right smack in the audio frequency range - was just too much for the public to endure if widespread acceptance of radio was to be realized. Remember that in the era, a radio was not standard equipment in cars and trucks so customers needed … http://www.rfcafe.com/references/radio-craft/automobile-ac-generator-march-1948-radio-craft.htm
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