The invention discloses a composite protection type double-power amplification type automobile lamp alarm system. The composite protection type double-power amplification type automobile lamp alarm system is mainly composed of a loudspeaker HA, a control circuit, a triggering circuit and a light resistor RL, and further provided with a power amplifier circuit, a logic protection amplifier circuit and a composite protection circuit. The power amplifier circuit is mainly composed of a power logic amplifier circuit, a switch power amplifier circuit connected with the power logic amplifier circuit, and a logic switch circuit connected between the power logic amplifier circuit and the switch power amplifier circuit in series. According to the composite protection type double-power amplification type automobile lamp alarm system, when the input current or the circuit running temperature is over high, the power supply of the circuits can be rapidly cut off, the damage, caused when the circuits are impacted by the current or run under the high temperature for a long term, to the circuits is avoided, and the service life of the circuits is greatly prolonged. An alarm can be automatically given when a driver forgets to switch off automobile lamps, and therefore the situation that the electricity of a vehicle-mounted storage battery is used up can be effectively eradicated; the service life of automobile bulbs and the storage battery is prolonged to the greatest extent.
Composite protection type double-power amplification type automobile lamp alarm system
2015-09-23
Patent
Elektronische Ressource
Englisch
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 |
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