One touch vehicle window operating circuit

Details One touch vehicle window operating circuit One touch vehicle window operating circuit

1996-05-29

1999-12-14

Wysocki, Jonathan

Electricity: motive power systems

Motor-reversing

307 101, H02P 700

Patent

active

060022248

ABSTRACT:
A one touch operating apparatus includes an actuator connected to a relay and causing actuation of the relay to switch a relay contact to a position supplying electric power to a drive motor to move a component in one direction. A latch circuit maintains power on the relay after momentary actuation of the actuator. An overcurrent protection device and a diode are connected in series between the switchable relay contact and the relay to form the latch circuit. The overcurrent protection device is a positive temperature coefficient resistor which detects a temperature increase resulting from an overcurrent through the motor to open the latch circuit and deenergize the relay terminating electric power to the motor. The overcurrent protective device is automatically resettable.

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SAE Technical Paper-The Use of Polymeric PTC Devices in Automotive Wiring Systems, Mar. 1993 pp. 87-94.

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