Patent ID: 8964434
Filing Date: 2015-02-24
Classification: H02M

Abstract:
1. A rectification circuit comprising: a first input terminal; a second input terminal; a first switch; a second switch; a controller configured to turn on and turn off the first switch and the second switch; a first diode comprising a fifth terminal and a sixth terminal; a second diode comprising a seventh terminal and a eighth terminal; an energy storage circuit; and a filtering circuit; wherein the first input terminal, the first switch, the energy storage circuit, the first diode, and the filtering circuit are connected in series and in order to ground, the eighth terminal is connected to a first node between the first diode and the filtering circuit, the seventh terminal is connected to a second node between the first switch and the energy storage circuit, the second input terminal is grounded, two opposite terminals of the filtering circuit are served as a pair of output terminals, the controller turns on and turns off the second switch at a predetermined frequency and keeps turning on the first switch when a positive alternative voltage is applied to the first input terminal, the controller turns on and turns off the first switch and keep turning on the second switch when a negative alternative voltage is applied to the first input terminal.