APPARATUS FOR PREVENTING DISCHARGE OF BATTERY USING MICROCOMPUTER OF CAR AUDIO AND METHOD THEREOF

摘要

PURPOSE: An apparatus for preventing discharge of a battery using a microcomputer of a car audio is provided to prevent a battery from being discharged by making a current from the battery not apply to a headlight using a microcomputer when the headlight is on. CONSTITUTION: The apparatus for preventing discharge of a battery using a microcomputer of a car audio comprises: a microcomputer(10) to check whether a accessory signal is low or high and to control off of a headlight after check on/off of the headlight using a light check port connected to the headlight; a diode(20) for protecting a reverse voltage to block a current or a voltage output from the microcomputer flowing through the headlight; a switching portion(30) to make a user control the on/off of the headlight; a lamp(40) to light inside or outside of a car; and transistors(Q1, Q2) to apply a current or a voltage of the battery to the lamp.