Light projector equipped with a low-voltage incandescent lamp an

Details Light projector equipped with a low-voltage incandescent lamp an Light projector equipped with a low-voltage incandescent lamp an

1980-06-23

1982-11-02

Nelson, Peter A.

Illumination

Light source and modifier

Condition responsive

362295, 362802, 315159, F21V 2304

Patent

active

043576524

ABSTRACT:
A motor-car headlight with a built-in static relay.
The headlight lamp is connected in series with a power phototransistor with which it is optically coupled. Turn on and turn off of the phototransistor is effected by temporarily changing the base voltage.

REFERENCES:
patent: 2240843 (1941-05-01), Gillespie
patent: 3336473 (1967-08-01), Buzan
patent: 3493761 (1970-02-01), Brightman
patent: 3609450 (1971-09-01), Hart
patent: 3746918 (1973-07-01), Drucker et al.
patent: 3751711 (1973-08-01), Schick
patent: 3983452 (1976-09-01), Bazin
patent: 4031430 (1977-06-01), Enomoto

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