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Simple battery charger circuit.

2016-05-12 07:01  
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Description .

Here is the circuit diagram of a simple and straight forward 12 V battery charger circuit with diagram. This circuit can be used to charge all type of 12V rechargeable batteries including car batteries. The circuit is nothing but a 12V DC power supply with an ammeter for monitoring the charging current. The two diodes forms a centre tapped full wave rectifier. The capacitor filters the rectifier output to produce a clean 12V output.

Circuit diagram with Parts list. 

car-battery-charger.gif

Notes. 

At initial stages of charging the ammeter will read about 1 to 3 amperes. As the battery is slowly charged the current slowly decreases. When the battery is fully charged the ammeter reading will be zero. Always be careful to connect the charger to the battery in correct polarity. Positive to positive and negative to negative.