Motor vehicle headlight control apparatus

Details Motor vehicle headlight control apparatus Motor vehicle headlight control apparatus

1975-03-31

1976-11-23

Miller, J D

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307141, 315 82, 317141S, 3171485R, B60Q 106, B60Q 108

Patent

active

039939146

ABSTRACT:
In a vehicle having an ignition switch, headlights and a storage battery, a relay has its winding in series with the battery and the collector-emitter circuit of a transistor and has normally open contacts in a headlight energizing circuit. A resistance-capacitance time delay circuit, connected with the ignition switch, controls bias of the transistor. Hence the transistor conducts whenever the ignition switch is "on" and for a short time after it is turned off; and while it conducts, the relay contacts are closed and the lights are energized.

REFERENCES:
patent: 3581276 (1971-05-01), Newman
patent: 3626239 (1971-12-01), Brock
patent: 3689806 (1972-09-01), Saita
patent: 3818267 (1974-06-01), Hill et al.

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