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    • 1. 发明授权
    • Contractor tip cleaning circuit
    • 承包商提示清洁电路
    • US06002559A
    • 1999-12-14
    • US16234
    • 1998-01-30
    • Brian N. Meyer
    • Brian N. Meyer
    • H01H1/60H02H3/00
    • H01H1/605Y10T307/924
    • A circuit for a direct current electric motor system for reducing contamination in contactor tips includes a semiconductor element in a parallel circuit arrangement with the contactor. The motor system includes a direct current power source coupled to an electric motor through the contactor. A capacitor is coupled in a parallel circuit arrangement with the motor. When the contactor is open, the capacitor is charged by the direct current power source through the semiconductor element. The capacitor will not charge to the same voltage as the direct current power source because of the semiconductor element, creating a voltage differential across the open contactor tips, which is equivalent to the voltage drop across the semiconductor element. Accordingly, the surge of current flowing across the contactor when its is closed cleans the contactor tips.
    • 用于减少接触器尖端污染的直流电动机系统的电路包括与接触器并联电路布置的半导体元件。 电动机系统包括通过接触器耦合到电动机的直流电源。 电容器与电动机并联电路布置。 当接触器断开时,电容器由直流电源通过半导体元件充电。 由于半导体元件,电容器将不会与直流电源充电到相同的电压,从而在开路的接触器尖端产生一个等效于跨越半导体元件的电压降的电压差。 因此,当接触器闭合时流过接触器的电流的浪涌清洗接触器尖端。