Description .
Here is the circuit diagram of a simple and straight forward battery charger that 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 out put.
Circuit diagram with Parts list.
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.
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