The invention discloses an automobile lamp extinguishment forgetting alarm based on constant current protection and logic protection. The automobile lamp extinguishment forgetting alarm based on the constant current protection and the logic protection is composed of a sound device HA, a control circuit connected with the sound device HA, a photoconductive resistor RL connected with the control circuit, a light beam stimulation type logic amplifying circuit connected with the control circuit and a logic protection emitter coupling amplifying circuit connected with the light beam stimulation type logic amplifying circuit and a negative pole of the sound device HA in series, and is characterized in that a constant current protection circuit is further connected in series between the control circuit and a positive pole of the sound device HA. The automobile lamp extinguishment forgetting alarm based on the constant current protection and the logic protection can automatically send out an alarm when a driver forgets to turn off an automobile lamp, and thereby can effectively eradicate the circumstance that a vehicle-mounted accumulator is exhausted from occurring, and prolongs use life of an automobile bulb and the accumulator to the utmost. Simultaneously, the automobile lamp extinguishment forgetting alarm based on the constant current protection and the logic protection can detect work currents through the constant current protection circuit, and performs adjustments when the work currents are high, and therefore damage to the automobile lamp extinguishment forgetting alarm based on the constant current protection and the logic protection, caused by excess currents, is avoided.


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    Title :

    Automobile lamp extinguishment forgetting alarm based on constant current protection and logic protection


    Contributors:

    Publication date :

    2015-09-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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