Power supply circuit for vehicle

Details Power supply circuit for vehicle Power supply circuit for vehicle

1984-07-27

1987-03-10

Pellinen, A. D.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307 10BP, 361170, B60R 1600

Patent

active

046492860

ABSTRACT:
A power supply circuit for a vehicle for providing power to motorized accessories, such as power windows and sun roofs, even after the vehicle ignition has been switched off. The power supply circuit includes a relay having relay contacts for delivering power to the accessory drive motor, and a relay coil which is energized upon switching on of the vehicle ignition. The relay is self-holding and continues to be energized even after the ignition has been switched off. However, when a door of the vehicle is opened, as detected by the closing of a door switch, the relay coil is de-energized and power to the accessory drive motor is terminated. In an alternative embodiment, power to the accessory drive motor is not terminated until after sequential opening and closing of a vehicle door.

REFERENCES:
patent: 3112431 (1963-11-01), Pederson
patent: 3139562 (1964-06-01), Freeborn
patent: 3436608 (1969-04-01), Caulier et al.
patent: 4123668 (1978-10-01), Pecota
patent: 4516034 (1985-05-01), Bier

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