Electrical controller having a window discriminator

Details Electrical controller having a window discriminator Electrical controller having a window discriminator

1985-03-21

1986-10-21

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250342, 340567, 307360, 361175, G08B 1318, G01J 510

Patent

active

046187707

ABSTRACT:
An electrical control has a detector which senses the infrared radiation within a given area. A pair of comparators function as a window discriminator. A voltage divider provides reference bias potentials to the comparators. The same divider provides a bias to the signal input terminals of the comparators. These signal input terminals are coupled through a capacitor to the detector. The output of the comparators is used to actuate the control.

REFERENCES:
patent: 3703718 (1972-11-01), Berman
patent: 3958118 (1976-05-01), Schwarz
patent: 4179691 (1979-12-01), Keller
patent: 4342987 (1982-08-01), Rossin
patent: 4346427 (1982-08-01), Blissett et al.
patent: 4364030 (1982-12-01), Rossin
patent: 4377808 (1983-03-01), Kao
patent: 4551711 (1985-11-01), Akiyama et al.
Exhibit A, Schematic Diagram, two pages, undated.

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