![]() ![]() The four diodes are used to form bridge rectifier.The two terminals of secondary winding of transformer are connected to bridge rectifier to have pulsating DC.Ground is taken from the centre of secondary winding of transformer.One 1000μF capacitor is connected between the positive output of bridge rectifier with respect to ground.Another 1000μF capacitor is connected between the negative output of bridge rectifier with respect to ground.The capacitors are called as filter capacitors.It filter out AC voltage and allows only DC voltage.
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