| 摘要 |
A new PFC high-frequency DC power supply directly converts a rectified fluctuant direct current into secondary DC voltage (and makes the electric energy to be stored in the primary circuit) at and around the peak value f the alternating current in a manner of combining an active mode and a passive mode. The power supply converts he electric energy stored in the primary circuit into secondary DC voltage and makes the electric energy to be stored n the primary circuit at and around the trough of the alternating current. The power supply converts the electric energy of the primary circuit into the electric energy of the secondary circuit with a forward mode, and stores the fluctuant DC voltage and the electric energy stored in the magnetic path after turning off switches into capacitors of he primary circuit with a flyback mode. |
