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    • 3. 发明申请
    • CONSTANT-VOLTAGE SUPPLY CIRCUIT FOR CONSUMERS CONNECTED TO AT LEAST ONE LINE
    • DC电源电路至少一条线连接的消费
    • WO03038977A2
    • 2003-05-08
    • PCT/DE0204021
    • 2002-10-25
    • CONTI TEMIC MICROELECTRONICBOSCH GMBH ROBERTBUEHRING HEIKOMAURITZ EWALDMEIER KLAUS-DIETERBOGENRIEDER HANS-GEORGWULFF HOLGER
    • BUEHRING HEIKOMAURITZ EWALDMEIER KLAUS-DIETERBOGENRIEDER HANS-GEORGWULFF HOLGER
    • G05F1/565H02M1/00
    • G05F1/565
    • The invention relates to a constant-voltage supply circuit for consumers connected to at least one line, said circuit being suitable for using in a central unit having consumers which are connected by means of a bus system, current and/or voltage signals which are modulated to the constant voltage being transmitted on the lines of the bus system. In order to protect against overvoltage on the line(s), a controllable switching means is connected between a supply voltage source and the line, and a zener diode is connected between the line and the control input of said switching means. A voltage distributor is provided between the supply voltage source and a reference potential, said voltage distributor comprising a centre tap which is connected to the control input of the switching means. A first current source is connected in series between the centre tap and the supply voltage source, and a second current source is connected in series between the centre tap and the reference potential. Said current sources disconnect the control input from the supply voltage source and, in the event of overvoltages, limit the current flowing through the Z diode and the voltage distributor on the basis of the reference potential.
    • 公开了连接的负载,用于对至少一个线路的直流电压供给电路,该电路适用于通过总线系统连接的消费者,其中所述总线系统的线路上的直流电流和/或电压信号调制在一个中央单元使用被发送。 为了防止在线路和一个可控开关过电压装置连接在电源电压源与所述线,以及Z二极管之间连接的线与该开关装置连接的控制输入端之间。 此外,电源电压源和基准电位之间,提供了一个分压器,其具有连接到开关的控制输入端的中心抽头装置和从该电压源包括第一电流源,并通过第二电流源串联连接的基准电位,控制输入 供电电压源去耦,并通过在过电压限制通过齐纳二极管和电流流动分压器到参考电势。