Method and apparatus for providing output indications in respons

Details Method and apparatus for providing output indications in respons Method and apparatus for providing output indications in respons

1976-06-02

1978-11-07

Rolinec, Rudolph V.

Communications: electrical

Condition responsive indicating system

Specific condition

315176, 324 61R, 324122, 340562, G01D 2104, G08B 1326, G01R 2726

Patent

active

041248465

ABSTRACT:
A method and apparatus for providing output indications in response to the presence of an electromagnetic energy receptor within a predetermined distance of a glow discharge device the electrodes of which have a voltage applied thereacross at least equal to the maintaining voltage but less than the breakdown voltage, including an excitor for generating an electromagnetic field around the glow discharge device at a strength less than the ionization level but sufficient to ionize the gas when the electromagnetic energy receptor is within the predetermined distance of the glow discharge device.

REFERENCES:
patent: 2525768 (1950-10-01), Bruns
patent: 2925539 (1960-02-01), Jellinek
Gottlieb, I.; "The RF Sniffer"; "CQ" -- The Radio Amateur's Journal; Mar. 1951; p. 33.

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