To provide a vehicular electronic circuit and a vehicular meter, capable of reducing power consumption.SOLUTION: A switch input circuit 1 detects the occurrence of leak in a circuit breaker 2 based on a circuit breaker voltage B at a location between the circuit breaker 2 for opening/closing a circuit and an input part 6 in which a voltage of the circuit breaker 2 is input. The switch input circuit 1 comprises: a leak detection trigger circuit 15 for outputting a leak detection trigger signal A; a voltage detection circuit 14 for comparing rise and fall between the circuit breaker voltage B and a predetermined voltage when the leak detection trigger signal A is input and performing switching; and a leak path resistor 11 for drawing current based on a switching operation of the voltage detection circuit 14 when the voltage detection circuit 14 detects lowering of the circuit breaker voltage B.SELECTED DRAWING: Figure 1

    【課題】消費電力を低減した車両用電子回路及び車両用計器を提供する。【解決手段】回路を開閉する開閉器2と、開閉器2の電圧が入力される入力部6と、の間の地点の開閉器電圧Bに基づいて、開閉器2のリークの発生を検出するスイッチ入力回路1であって、リーク検出トリガー信号Aを出力するリーク検出トリガー回路15と、リーク検出トリガー信号Aが入力されると、開閉器電圧Bと所定の電圧との高低を比較し、スイッチングを行う電圧検出回路14と、電圧検出回路14が開閉器電圧Bの低下を検出したときに、電圧検出回路14のスイッチング動作に基づいて電流を流すリークパス抵抗11と、を備えるスイッチ入力回路1。【選択図】図1


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    Title :

    VEHICULAR ELECTRONIC CIRCUIT AND VEHICULAR METER


    Additional title:

    車両用電子回路及び車両用計器


    Contributors:

    Publication date :

    2022-02-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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