Circuitry for controlling automobile headlights from windshield

Details Circuitry for controlling automobile headlights from windshield Circuitry for controlling automobile headlights from windshield

1985-02-11

1987-04-07

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307 10R, 315 82, H02G 300

Patent

active

046563636

ABSTRACT:
Circuitry is provided for a vehicle which automatically turns on the vehicle's headlights during operation of the windshield wipers of the vehicle. A signal voltage is supplied to the circuit from either the power line to the wiper motor or, in the case of pneumatic wipers, through a pressure actuated switch mounted on the wiper motor air line. The signal voltage opens a first transistor, which through a voltage network opens a second power transistor. The power transistor then closes a circuit between the main and lighting circuit power lines of the vehicle.

REFERENCES:
patent: 3600596 (1971-08-01), Aloisantoni
patent: 3767966 (1973-10-01), Bell
patent: 4337400 (1982-07-01), Hahn
J. Okolowicz, Delay Circuits to Keep Headlights on when Needed, Electronic Design, p. 114.

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