Eight electrode optical readout gap

Details Eight electrode optical readout gap Eight electrode optical readout gap

1983-04-25

1985-10-29

Chatmon, Saxfield

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

Load device irradiating the radiant energy responsive device

324403, 250209, 315120, 315129, 315134, 315149, 361129, 361131, H05B 3702, H05B 3904, H05B 4136

Patent

active

045502730

ABSTRACT:
A protective device for a plurality of electrical circuits includes a pluity of isolated electrodes forming a gap with a common electrode. An output signal, electrically isolated from the circuits being monitored, is obtained by a photosensor viewing the discharge gap through an optical window. Radioactive stabilization of discharge characteristics is provided for slowly changing voltages and carbon tipped dynamic starters provide desirable discharge characteristics for rapidly varying voltages. A hydrogen permeation barrier is provided on external surfaces of the device.

REFERENCES:
patent: 3487261 (1969-12-01), Boksjo et al.
patent: 4063130 (1977-12-01), Hunter, Jr.
patent: 4157486 (1979-06-01), Fegley
patent: 4177404 (1979-12-01), Eguchi
patent: 4187526 (1980-02-01), Heinze et al.
patent: 4393433 (1983-07-01), Anderson et al.
patent: 4431947 (1984-02-01), Ferriss et al.
patent: 4463284 (1984-07-01), Tamura et al.

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