Switching power supply

Details Switching power supply Switching power supply

1987-03-23

1988-10-11

Wong, Peter S.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 97, 219 1055B, H02M 3335

Patent

active

047775750

ABSTRACT:
A switching power supply, in which a series circuit consisting of a primary winding of a transformer and a controllable switch is connected with a DC power source and a secondary winding of the transformer is connected with a first voltage source outputting the voltage developed across the secondary winding during the on-period of the controllable switch and a second voltage source storing the exciting energy of the transformer during the off-period of the controllable switch by using the exciting inductance of the transformer as a current source, a series circuit consisting of the first and the second voltage sources being connected with a load. Owing to this construction, even if voltage-current characteristic of a load having constant voltage characteristic, such as a magnetron, vary due to variations in the temperature, etc., the output voltage is automatically compensated and a stable electric power can be supplied to the load.

REFERENCES:
patent: 4253136 (1981-02-01), Nanko
patent: 4253137 (1981-02-01), Rao
patent: 4593167 (1986-06-01), Nilssen
patent: 4638149 (1987-01-01), Wessel et al.
Densi Fijutsu, vol. 20, No. 3 (1978) pp. 34-45.

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