Automatic battery charger circuit is possible to realize a battery charger with excellent quality that allows it to recharge the 12 volt car battery and dry battery used in the
alarm system. Operation is completely automatic, because it connects battery, battery charger will only charge the battery if it runs out, because it automatically disconnect the batteries fully charged. This device is supported by transformer with secondary voltage is 14-15 volts with a minimum of 3 Ampere current.
The adjustment of the trimmer TR1 is a way you do, the output of the battery charger, a voltage of about 14.4 volts with no load. The maximum current of 3 Amperes for distribution, it is therefore advised to NOT try to recharge batteries with a Superior capacity 36Ah.
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