Storage battery automatic charger circuit (2)

Published:2011/7/13 19:28:00 Author:TaoXi | Keyword: Storage battery, automatic charger | From:SeekIC

The principle diagram of the storage battery automatic charger circuit is as shown in the figure 4-9. The 220V city electricity is reduced by the transformer T to get the secondary voltage U2, and this secondary voltage U2 is bridge-type rectified to output the DC pulse voltage, the DC pulse voltage gets through the relay normally closed contact points K1-2，the R4, the ammeter PA, the VT1 and the battery GB, the VT2 to charge the GB. You can adjust the base potentials of VT1 and VT2 by adjusting RP1, so that you can adjust the Icb charging current of VT2. For example, when the battery voltage of the 12V storage battery increases to (12/2)X2.5=15V, VT3 conducts, K1 closes, the normally closed contact points K1-2 cut off to cut off the charging circuit, the charger will stop charging.



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