12V/6A charging circuit with excellent charge curve and auto-cutout circuit

Published:2011/7/21 0:54:00 Author:TaoXi | Keyword: 12V/6A, charging circuit, excellent charge curve, auto-cutout circuit | From:SeekIC

The charging process of this circuit is divided into three stages (figure a): stage one, when the storage battery has no residual electric charge, you can charge the battery with 2A current to prevent the overload of the charging device. Stage 2 (C-D), you need to charge the battery with the largest constant current. Stage 3 (E-F), you need to charge the battery with rapid decreasing current. When the voltage is high enough, the circuit will cut off automatically. Figure b is the charging circuit. The power tubes T2 and T3 use the epitaxy base electrode transistor BD646, the base electrode current has relationship with the load current.



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