autodyne circuit

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• Autodyne — The autodyne circuit was an improvement to radio signal amplification using the De Forest Audion light bulb type amplifier. The audodyne circuit was discovered by Edwin Howard Armstrong of Columbia University, New York, NY. He inserted a tuned… …   Wikipedia

• autodyne — /aw teuh duyn /, n. Electronics. a type of heterodyne circuit containing a vacuum tube or transistor that acts simultaneously as a detector and oscillator. [1915 20; AUTO 1 + DYNE] * * * …   Universalium

• Superheterodyne receiver — A 5 tube superheterodyne receiver made in Japan around 1955 In electronics, a superheterodyne receiver (sometimes shortened to superhet) uses frequency mixing or heterodyning to convert a received signal to a fixed intermediate frequency, which… …   Wikipedia

• Pentagrid converter — For other types of frequency converters please, see Frequency converter. The pentagrid converter is a radio receiving valve (vacuum tube) with five grids used as the frequency mixer stage of a superheterodyne radio receiver. Grids of a 12SA7GT… …   Wikipedia

• Receiver (radio) — This article is about a radio receiver, for other uses see Radio (disambiguation). A radio receiver is an electronic circuit that receives its input from an antenna, uses electronic filters to separate a wanted radio signal from all other signals …   Wikipedia

• List of vacuum tubes — This is a list of vacuum tubes or thermionic valves. Before the advent of semiconductor devices, hundreds of tube types were used in consumer and industrial electronics; today only a few types are still used in specialized applications. Contents… …   Wikipedia

• All American Five — The All American Five was a mass produced, superheterodyne radio receiver with five vacuum tubes first designed and produced in the USA in the 1930s.The radio was called the All American Five because the design represented the majority of radios… …   Wikipedia