Intermittent wiper control circuit with instant wipe

Details Intermittent wiper control circuit with instant wipe Intermittent wiper control circuit with instant wipe

1988-06-27

1989-04-25

Ro, Bentsu

Electricity: motive power systems

Periodic, repetitious or successive operations control of...

318DIG2, B60S 108

Patent

active

048251348

ABSTRACT:
A vehicle windshield wiper control circuit in which the first wipe cycle is initiated with closure of the wiper activation switch in intermittent operation. The control circuit uses a voltage comparison arrangement in which a voltage divider, with an instant wipe capacitor connected across the output, has a normal output voltage ineffective to produce motor drive for wiper actuation but produces a different output voltage through electric current diversion from one of its series resistors with the wiper activation switch open which is effective, immediately upon closure of the wiper activating switch, to initiate a wipe cycle, the instant wipe capacitor thereafter charging to the normal output voltage before another wipe cycle can be initiated.

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patent: 4689536 (1987-08-01), Iyoda
patent: 4703237 (1987-10-01), Hochstein

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