| 摘要 |
PROBLEM TO BE SOLVED: To provide a small-sized and low-loss rectifier circuit capable of improving power factor.SOLUTION: Power outputted from an AC power supply AC is caused to be stored in inductors L1 and L2 as magnetic energy via a switch SW1 (or SW2) in an on-state. When the switch SW1 (or SW2) is turned off, the magnetic energy is stored in a capacitor CM as electrostatic energy. The electrostatic energy in the capacitor CM is discharged to a load, after the completion of the discharging, the switch SW1 (or SW2) is turned on again. The on/off frequency and on-time of the switch are constant, thereby achieving current sensor-less and ideal PFC. |
