Patent ID: 7663898

Claim:
A power supply circuit, comprising: a first reverse blocking transistor coupled to a first terminal of an AC power source; a second reverse blocking transistor coupled to a second terminal of the AC power source; a first inductor provided between a collector of the first reverse blocking transistor and the second terminal of the AC power source and configured to store energy; a second inductor provided between a collector of the second reverse blocking transistor and the second terminal of the AC power source; and a first output terminal provided between the first inductor and the first reverse blocking transistor, wherein the first output terminal is configured to receive energy from the first inductor and output DC voltages, wherein the first reverse blocking transistor switches to magnetize the first inductor while current flow through the second reverse blocking transistor is blocked, and the second reverse blocking transistor switches to magnetize the second inductor while current flow through the first reverse blocking transistor is blocked.