Patent ID: 7894214

Claim:
A power converter capable of lowering power wastage on standby, comprising: a DC power source having a positive electrode and a negative electrode; and a first transformer having a primary side and a secondary side, the primary side having an end connected the positive electrode, the primary side having: a first electric control switch having a control end and connected with the other end of the primary side; an electric current detecting and converting unit connected with the first electric control switch and the negative electrode of the DC power source for detecting power source transmitted through the first electric control switch from the primary side and converting it into an AC voltage signal and a DC voltage signal for output via an AC signal end and a DC signal end respectively; a power controller connected with the AC signal end and the control end of the first electric control switch; and a voltage detecting and controlling unit having a voltage output end and connected with the DC signal end for detecting voltage at the DC signal end; the secondary side of the first transformer having: a synchronous rectifying circuit having a voltage control end connected with the voltage output end; an MOSFET connected with the synchronous rectifying circuit and each having a body diode; and an oscillating loop having two ends, one of which is grounded and the other end is connected with an end of the secondary side, for connection with a load, the oscillating loop having a feedback end connected with the power controller.