Automatic light switch

Details Automatic light switch Automatic light switch

1976-05-12

1978-04-11

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250214B, H01J 3912

Patent

active

040840883

ABSTRACT:
A light activated load switch for applying electrical power to load when its triggering light sensor is struck by a light source and including photosensing means to protect against triggering by inadvertent, ambient of unwanted light sources. The device includes adjustable timing means for automatic turnoff loads and for double triggering modes of operation.

REFERENCES:
patent: 1939436 (1933-12-01), Conn
patent: 3901813 (1975-08-01), Potopinski
patent: 3916183 (1975-10-01), Duve et al.

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