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    • 1. 发明公开
    • Current steering circuit
    • Stromsteuerschaltung。
    • EP0058464A1
    • 1982-08-25
    • EP82300038.5
    • 1982-01-05
    • WESTINGHOUSE BRAKE AND SIGNAL COMPANY LIMITED
    • Brown, Christopher Robert Westinghouse BrakeCorrie, John Douglas Westinghouse Brake
    • G01R19/165
    • G01R19/0038
    • A current steering circuit for comparing the outputs of two channels of a parallel redundant control system. The voltages and senses of the outputs are mirror-images and are fed into opposite ends (A;B) of four terminal resistor network (Fig 1), of two bias arms (R) and two input arms (R), at the centre junction of which is a light emitting diode (D). One of the bias arms contains oscillating switch means (S) which causes the diode (D) bias voltage to oscillate. When the input voltage at the diode cathode is high the diode will emit light and the voltage at the diode anode will oscillate across a predetermined threshold voltage only when the inputs agree. Two or more circuits can be connected together to compare the outputs of several parallel redundant channel.
    • 一种用于比较并行冗余控制系统的两个通道的输出的电流转向电路。 输出的电压和感测是镜像,并且馈送到四个终端电阻网络的相对端(A; B),两个偏置臂(R)和两个输入臂(R),其中心接点处 发光二极管(D)。 偏置臂中的一个包含使二极管(D)偏置电压振荡的振荡开关装置(S)。 当二极管阴极处的输入电压高时,二极管将发光,并且二极管阳极处的电压仅在输入一致时才会跨越预定阈值电压振荡。 两个或多个电路可以连接在一起,以比较多个并行冗余通道的输出。