Can promote power conversion efficiency and suppression heat start impulse current's device

The utility model discloses a can promote power conversion efficiency and suppression heat start impulse current's device, the fuse of alternating current L end concatenate and connect a common mode inductance input behind the power resistor, and the transformer is connected to the common mode inductance output behind the rectifier bridge, be equipped with first winding on the transformer, first winding's synonym end linked switch pipe source electrode, the node that fuse and power resistor concatenated is connected in the switch tube drain electrode, and the switch tube grid is through secondohmic connection cathode of the diode, the anodal end of the same name of connecting transformer first winding of diode, the switch tube grid is still through third ohmic connection first winding's synonym end, first winding's synonym end is connected to the nodal connection electric capacity one end of cathode of the diode and second ohmic connection, the electric capacity other end, a zener diode and the 3rd resistor p