DUAL MODE MOTOR CONTROLLER FOR A VEHICLE WINDOW WIPER SYSTEM

摘要

A vehicle windshield wiper motor controller (10) includes a control circuit (15) and a power circuit. The power circuit can operate in dual modes, using a low cost MOSFET as the power switch during normal operation of the wiper motor, and a relay as the power switch during motor lugging and stall conditions. The controller (10) is part of a vehicle wiper system which includes a conventional wiper blade assembly positioned on the vehicle to engage the windshield or other window surface.