Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Radiant energy responsive load device
Patent
1976-02-04
1977-12-13
La Roche, Eugene R.
Electric lamp and discharge devices: systems
With radiant energy sensitive control means
Radiant energy responsive load device
307139, 315149, 315347, H05B 4102, H05B 4136
Patent
active
040631303
ABSTRACT:
A high voltage switching system switches large load currents in short periods. Gas is contained within an envelope at a pressure of the order of magnitude of at least 0.1 atmosphere. The gas provides a relatively high electron drift velocity at a relatively low electric field strength. A pair of electrodes are spaced apart within the envelope and are connected to respective switch terminals for connecting to a load. The voltage gradient between the electrodes so spaced is insufficient at rated voltage to produce any substantial secondary ionization. The gas is ionized by a beam of high energy electrons introduced into the gas through the envelope. Means is provided for turning the beam on and off, thereby closing and opening the current path through the gas and effecting the switching of current through the load.
REFERENCES:
patent: 2220551 (1940-11-01), Shimizu et al.
patent: 3398322 (1968-08-01), Guenther
patent: 3422307 (1969-01-01), Langer
patent: 3633067 (1972-01-01), Dubois
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