Antique radios, Old Time Radios

TB1_Kenotron

Country:	United States of America (USA)		Brand:	General Electric Co. (GE); Bridgeport (CT)
			Tube type:	Half-Wave Vacuum Rectifier Power-supply

Tube ID = 28815

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Identical to	TB1_Kenotron

Base	UV-Base (4 Pins+Bayonet, USA 1914 WE)
Filament	-: Direct / -: Parallel / series AC/DC /
Description	This Kenotron was utilized to regulate the output voltage of the wind-driven generators used to furnish power to aircraft radio equipment. Filament voltage range 7.5 to 10.75 V. Va max.= 250 V; Ia max.= 125 mA. Used in WW I aircraft. About 4500 were delivered to the Signal Corps. The Term "Kenotron" was chosen for the pure electron-discharge two element-tube. The word Kenotron is derived from the Greek "kenos" signifying "empty space" (vakuum), and "tron", used by the Greek to denote an instrument. Text in other languages (may differ)
Literature	Saga of the Vacuumtube, Tyne page 141, 147, 148, 149 70 Years of Radiotubes and V.

TB1_Kenotron: own collection
Peter den Boer

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