lm350 car battery charger circuit design


Posted on Feb 4, 2014

This LM350 Car battery charger circuit project is a high performance charger that quickly charges gelled lead-acid batteries and turns off the charger process at full charge. This LM350 Car battery charger circuit will provide a charge current of 2A when the battery is nod fully charged, but as buttery voltage rise, current decreases. When the


lm350 car battery charger circuit design
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current falls to 150 mA, the charger automatically switches to a lower float voltage to prevent the overcharging. When the charging process is finish the transistor Q1 make the LED1 to glow, to indicate the state of charging process. The small value resistors R2, R3, R6 must be 1 watt resistors and R7 must be 5 watts resistors. When the push button switch is pushed, the output voltage of the charger goes to 14. 5 V and when the battery approaches to full charge, the charging current decreases and the output voltage is reduced to about 12. 5 V.




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