In this case, the semiconductor switching means is used, for example, as a conductor for the triggering of a triggering relay when the power supply system is to be started. However, a transistor is not used for this purpose, rather, in this circuit breaker it is utilized as an initiating signal transmitter.Ĭircuit breakers are known, which have a semiconductor switching means, and in the rest condition, connected in parallel therewith. 4,566,254, in which the triggering of the circuit breaker is achieved by means of a voltage difference between the transistor side and the battery side. This known starting circuit has the disadvantage that there can be no contactless operation of the circuit breaker, and no current can be supplied to the load wire.Ī circuit breaker designed for contactless operation is known from U.S. In the rest condition, the transistor thus takes over the function of the circuit breaker, by means of which it is closed if the power supply system is to be started. In this case, the transistor is closed in the rest condition of the power supply system, and is opened as the battery is discharged by the current flowing therethrough.
In this known starting circuit, which is designed to be specifically utilized in a power supply system having a battery, an electronic switching means, which is designed as a transistor, is located in parallel with the battery. Such a starting circuit is known from German Published, Prosecuted Patent Application DE No. The invention pertains to a starting circuit for a circuit breaker of a power supply system having a load wire connected to the circuit breaker and having a semiconductor switch in parallel connection to the load wire.
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