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.
The use of this Automatic battery charger device is perfect for charging batteries for alarm systems with battery buffering. During the insertion, so be careful with the connection to the battery with the AC polarity. For mounting components, you must carefully follow the completion of the scheme.
LIST OF ELECTRONIC COMPONENTS:
All resistors are 1/4 watt unless otherwise stated.
R1 = 470 Ohms
R2 = 10 Kohm
R3 = 270 ohms
TR1 = 10 Kohm trimmer.
C1 = 1000uF25Velec.
DZ1 = 5.1 volts lWzener.
T1 = 2N2218
T2 = 2N3055-BDW21C
1C1 = UA741
PT1 = KBL04/01
Support a 8-pin IC.
A heat sink for T1.
A heat sink for T2.
