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Thursday, April 23, 2015

Alarm light circuit for battery charger

This is Alarm light circuit for a general battery charger. It is simplified circuit and cheap, use one transistor BC557 and display with 2 LED.
Battery that use with car, motorcycle or Lamps lighting of fishermen. Always is Lead-acid batteries. Which each cell in the battery will have the voltage per cell is about 2.3 volts.duration of charging depends on current charging. By the currentmuch takes quick charger or less currents charge time is long. Between that charging the current will reduce continuously until the lowest is about 10mA. Which battery is near full charge. But we cannot know that battery full or not. because no signal alarm.
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