Bias power source energized by tertiary winding including hyster

Details Bias power source energized by tertiary winding including hyster Bias power source energized by tertiary winding including hyster

1984-10-15

1986-11-18

Salce, Patrick R.

Electric power conversion systems

Current conversion

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

363 56, 363 97, H02M 3335

Patent

active

046239600

ABSTRACT:
A converter circuit that derives its bias power from voltage supplied by a tertiary winding including a tertiary winding voltage level responsive circuit with a hysteretic characteristic to selectively enable and disable the drive circuitry controlling the converter's power switching transistor. Should the bias voltage drop due to an output fault, the converter is operated at a subfrequency of its normal operating frequency in order to prevent operating the power switching transistor in its active region during high current conduction.

REFERENCES:
patent: 4323961 (1982-04-01), Josephson
patent: 4357572 (1982-11-01), Anderson et al.

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