Patent ID: 6509706
Filing Date: 2003-01-21
Classification: B60S

Abstract:
A wiper control apparatus comprising:a combination switch for setting an operation mode of a wiper; a wiper motor which is driven according to the operation mode set by said combination switch; an autostop (AS) switch for producing a signal having a level varying according to a park position and other positions as the wiper motor rotates; a first semiconductor switch element for on/off controlling energization of the wiper motor; a second semiconductor switch element for turning on a closed circuit for braking said wiper motor which passes a reverse current through said wiper motor while energization for said wiper motor is off; a controller for supplying a first ON/OFF control signal to the first semiconductor switch element and a second ON/OFF control signal to said second semiconductor switch element; current detecting means for detecting a current flowing through said second semiconductor switch; and current limiting means for limiting a current flowing through said second semiconductor switch element if the current detected by said current detecting means exceeds a prescribed threshold value.