Outdoor lighting controls

Details Outdoor lighting controls Outdoor lighting controls

1991-09-18

1992-07-21

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

Electric switch controlled by the radiant energy responsive...

315149, 250206, H05B 3702

Patent

active

051325969

ABSTRACT:
An outdoor lighting control includes a photosensor responsive to ambient outdoor light and an alternating current relay with a pair of contacts movable between make and break positions. The relay includes a contact actuating arrangement that responds to the photosensor and alternating current bias the contacts into a make position and move the contacts electromagnetically into a break position. The contact actuating arrangement is sufficiently stiff and responsive to the alternating current to limit chatter in the contact during passage from make to break to fifteen milliseconds when the photosensor senses a transition between dark and daylight. Preferably, the chatter is limited between 1 and 10 milliseconds.

REFERENCES:
patent: 3952192 (1976-04-01), Turner
patent: 4095100 (1978-06-01), Selick
patent: 4209728 (1980-06-01), Membreno
patent: 4356405 (1982-10-01), Russo
patent: 4626811 (1986-12-01), McKee
patent: 4733103 (1988-03-01), Itoh
patent: 4991054 (1991-02-01), Walters

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