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1959 - tunnel diode transmitter is compared in size with a 50-cent piece

A WHOLE AND A HALF

CD 1967038 E&MP52.133

Electronics

July 23, 1959

A complete tunnel diode transmitter is compared in size with a 50-cent piece.

The transmitter consists of one variable and two fixed ceramic capacitors, a coil that tunes to the operating frequency - which may be higher than one kilomegacycle per second - and the tunnel diode itself, located inside the "can" in the center of the device.

Progress in development of new devices using tunnel diodes, and new scientific understanding of the diode itself, was reported by General Electric Research Laboratory on July 23, 1959. 


Original Caption by Science Service
General Electric



National Museum of American History

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