In this paper, presents a low voltage electromagnetic energy harvesting systems consisting of a microgenerator and power processing circuit is to be analyzed. The microgenerator is capable of producing a voltage of a few hundred millivolts. A conventional two-stage power conversion schemes cannot be used for such a low AC voltage, a suitable single stage AC-DC converter is utilized for power processing. The converter boosts the low AC voltage to a nominal DC voltage required by electronic devices. An electromagnetic micro generator which converts vibration into electrical energy.