| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply equipment which has little distortion in input current and has a small peak factor of the current in a load circuit and is constituted of a small number of components. SOLUTION: Between DC output terminals of a rectifier DB for rectifying an AC power supply AC, a capacitor C2 of a relatively small capacity is connected via a diode D11. To a connection between the rectifier DB and the diode D11, one end of a capacitor C0 of a relatively large capacity is connected. A series circuit of the capacitor C0, the diode D11, and the capacitor C2 is connected in parallel by a series circuit of a pair of switching elements Q1, Q2 which are alternatedly turned on and off at high frequencies, Between a connection between the capacitor C2 and the diode D11 and a connection between the switching elements Q1, Q2, a primary winding of a transformer T1 which is a leakage transformer is inserted. A load circuit 1 is connected to a secondary winding of the transformer T1. |
