Motor vehicle accessory control with control module having singl

Details Motor vehicle accessory control with control module having singl Motor vehicle accessory control with control module having singl

1995-11-22

1996-11-05

Sircus, Brian

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

307 101, 70279, 49280, B60L 100

Patent

active

055720986

ABSTRACT:
A motor vehicle accessory control is capable of reversibly activating a DC motor to operate a vehicle door lock, window, sun roof or similarly operated device through a relay controlled H-switch arrangement. The control is provided with an automatic control circuit in a module having input and output terminals but only a single power terminal, which provides either positive power or ground to the module. The opposite power connections are made from the module through the activating relay coils of the H-switch motor drive circuit. A manual switch may be provided for alternative manual reversible activation of the relays; and the circuit provides priority of manual over automatic operation. Neither the manual switch nor the module circuit is capable of activating both relays simultaneously; therefore, a reliable power connection is always available for the module through at least one of the relay activating coils.

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1994 U-Van Platform Service Manual, copyright Jul. 1993, pp. 8A-131-0 to 8A-131-5 and title page.

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