The embodiment of the invention discloses a single-line control indicating lamp state switching circuit and vehicle-mounted electronic equipment. The single-line control indicating lamp state switching circuit is used for controlling an indicating lamp to be turned on and turned off during circuit state switching. The single-line control indicating lamp state switching circuit comprises a first light emitting diode, a first transistor, a second light emitting diode, a second transistor, a first power supply port, a second power supply port and a pin signal port which is connected with a single-chip microcomputer; the anode of the first light emitting diode is connected with the first power supply port; the cathode of the first light emitting diode is connected with the collector of the first transistor; the anode of the second light emitting diode is connected with the second power supply port; the cathode of the second light emitting diode is connected with the emitter of the second transistor; the base of the first transistor is connected with the signal port; the emitter of the first transistor is grounded; the base of the second transistor is connected with the signal port; andthe collector of the second transistor is grounded.

    本申请实施例公开了一种单线控制指示灯状态切换电路及车载电子设备,用于在电路切换状态时控制指示灯的点亮与熄灭。本申请实施例包括:一种单线控制指示灯状态切换电路,包括第一发光二极管、第一晶体管、第二发光二极管、第二晶体管、第一电源端口、第二电源端口和连接单片机的引脚信号端口;所述第一发光二极管的阳极连接所述第一电源端口,所述第一发光二极管的阴极连接所述第一晶体管的集电极;所述第二发光二极管的阳极连接所述第二电源端口,所述第二发光二极管的阴极连接所述第二晶体管的发射极;所述第一晶体管的基极连接所述信号端口,所述第一晶体管的发射极接地;所述第二晶体管的基极连接所述信号端口;所述第二晶体管的集电极接地。


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    Title :

    Single-line control indicating lamp state switching circuit and vehicle-mounted electronic equipment


    Additional title:

    一种单线控制指示灯状态切换电路及车载电子设备


    Contributors:
    LIU JUN (author) / HE LE (author)

    Publication date :

    2020-09-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / H05B ELECTRIC HEATING , Elektrische Heizung



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