This unregulated DC voltage is now applied to the LM317 variable voltage regulator to provide regulated DC voltage. Thus the output of the capacitor unregulated Dc voltage. The pulsating DC voltage is applied to the 470uF capacitor to remove the AC ripples. This process is also called as rectification. Here diodes D1, D2 are used to convert low AC voltage to pulsating DC voltage. The output of the transformer is connected to the Diodes D1, D2. The main supply voltage 230V, 50Hz is connected to the primary winding of the center tapped transformer to step down the voltage to 15-0-15V. ![]() This automatic battery charger circuit is mainly involves two sections – power supply section and load comparison section. Automatic 12v Battery Charger Circuit DiagramĪutomatic 12v Battery Charger Circuit Diagram Circuit Diagram of Automatic Battery Charger.
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