Switching power supply with surge current and surge voltage prev

Details Switching power supply with surge current and surge voltage prev Switching power supply with surge current and surge voltage prev

1996-10-03

1998-06-30

Tso, Edward

Electric power conversion systems

Current conversion

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

363 98, 363132, H02M 3335

Patent

active

057743452

ABSTRACT:
A direct current output voltage is switched by two switching units and a current alternately changing directions is supplied to a primary winding of a transformer. An alternating voltage induced in a secondary winding of the transformer is rectified and smoothed, and is applied to a control circuit. A bidirectional switching unit is connected in parallel with the primary winding, and is controlled by the control circuit so that the primary winding is short-circuited by the bidirectional switching unit and an exciting energy of the transformer is held continuously.

REFERENCES:
patent: 4849873 (1989-07-01), Vanderhelst
patent: 4926302 (1990-05-01), Harada et al.
patent: 5063488 (1991-11-01), Harada et al.
patent: 5343378 (1994-08-01), Tohya
patent: 5345376 (1994-09-01), Nourbakhsh
patent: 5406177 (1995-04-01), Nerone

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