Single transformer switching regulator

Details Single transformer switching regulator Single transformer switching regulator

1993-10-08

1995-05-09

Dougherty, Thomas M.

Electric power conversion systems

Current conversion

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

H02M 3335

Patent

active

054146119

ABSTRACT:
A switching regulator comprises a single transformer having a primary winding connected in an input circuit for receiving direct-current energy and a secondary winding connected in an output circuit, and a switching transistor connected in series with the primary winding. A high frequency pulse generator triggers the switching transistor so that it interrupts the direct-current energy at a high frequency. A rectifier is provided for converting high frequency energy developed in the secondary winding into direct-current output energy, which is maintained constant by controlling the high frequency pulse generator. A low voltage detector produces a signal when the direct-current energy in the input circuit falls below a specified value. In response to the signal from the low voltage detector, constant direct-current energy is derived from a battery and applied to the output circuit as backup power.

REFERENCES:
patent: 4494178 (1985-01-01), Ishima
patent: 5034871 (1991-07-01), Okamoto et al.
patent: 5063489 (1991-11-01), Inaba
patent: 5208432 (1993-05-01), Han
patent: 5297014 (1994-03-01), Saito et al.
patent: 5301095 (1994-04-01), Teramoto et al.

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