Light relay with adjustable core and contact gap

Details Light relay with adjustable core and contact gap Light relay with adjustable core and contact gap

1992-01-02

1995-07-18

Pascal, Robert J.

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

Electric switch controlled by the radiant energy responsive...

335 67, 335105, 315149, 250206, H05B 3702

Patent

active

054344751

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 includes a coiled extension spring for moving the contacts into the make position and a resilient armature which biases the armature toward the break position. The spring and armature have respective resiliences sufficiently stiff and responsive to the alternating current to limit chatter in the contacts during passage from the make position to the break position to 15 milliseconds when the photosensitive means senses a transition between dark and daylight.

REFERENCES:
patent: 1726164 (1929-08-01), Queeney
patent: 2839631 (1958-06-01), Rice
patent: 2967981 (1961-01-01), Wise

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