Electric wind screen washer pump energy supply - is of solid state type with logic elements giving some programmed alternative of operation

摘要

An electronic feed device for a windscreen washer pump, has an alternating action. There is a timing logic circuit (3) (4) giving a control voltage. The time acts from releases (25). A second logic circuit (1) (2) receives the control voltage and acts to feed the pump. The second circuit has two logic gates, the first (1) having a control entry (E) and another joined to the terminal of a resistor (R1). The second gate has two inputs connected to another resistor (R) and its output (S) to the terminals of a capacitor (C). The device enables a given number of pump cycles to be obtained without any action by the driver.