Patent ID: 7133299

Claim:
A switching power conversion circuit comprising: a saturable load assembly including a load and a saturable reactor; a first switching inductance coil assembly formed by series connecting a first switch and a first coil, said first switching inductance coil assembly being connected to said saturable load assembly and a first potential; and a second switching inductance coil assembly formed by series connecting a second switch and a second coil, said second switching inductance coil assembly being connected to said first switching inductance coil assembly and a second potential, said first and second switching inductance coil assemblies being magnetically coupled together; whereby when both said first and second switches are on, said first potential and said second potential magnetize said first and second coils, and when said first and second switches are alternately off, the magnetic energy of said first and second coils is transferred to said saturable load assembly, and responsive to the saturation effect of said saturable reactor the terminal potential of the off switch becomes zero after a certain period of time, the off switch turning on at this time.