Switching regulator having a pulse width control system

Details Switching regulator having a pulse width control system Switching regulator having a pulse width control system

1988-04-11

1989-07-18

Beha, Jr., William H.

Electric power conversion systems

Current conversion

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

363 56, H02M 3335

Patent

active

048498696

ABSTRACT:
A switching regulator includes a high frequency transformer having a primary and secondary and tertiary windings. It also has a switching element and shunt regulator and photo coupler and control circuit and these elements are arranged for controlling the on-period and the on-time of the switching element so as to increase the on-period as well as the on-time when the load is heavy. The switching losses caused by the limit of the capability of the switching element as a result of an increase in the on-period upon the load becoming light are prevented while the switching frequency is prevented from becoming an audio frequency upon the load becoming heavy. Thus, a high efficiency switching regulator with a wide range of equal load capacities may be constructed.

REFERENCES:
patent: 4761702 (1988-08-01), Pinard
Rizzo, "Flyback Converter System", IBM Tech. Discl. Bul., vol. 23, No. 8, pp. 3652-4, Jan. 1981, (363/21).

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