Switching power supply

Details Switching power supply Switching power supply

1983-12-09

1985-04-09

Wong, Peter S.

Electric power conversion systems

Current conversion

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

323289, H02M 3335

Patent

active

045105634

ABSTRACT:
An off-line switching regulated power supply employing a switching transistor, wherein the base drive system is improved to supply a reverse base current, remaining an interval after the termination of a forward base current, thereby the influence of the storage time of the switching transistor is removed and various drawbacks including the problem due to the incompatible characteristics of a breakdown voltage and switching speed, the problem due to delay in turning-off and the problem of overheating, are removed, resultantly enabling to provide a switching power supply which is allowed to employ a higher switching frequency.

REFERENCES:
patent: 4220987 (1980-09-01), Rao et al.
patent: 4312029 (1982-01-01), Zellmer
patent: 4322785 (1982-03-01), Walker
patent: 4352054 (1982-09-01), Grunsch et al.
patent: 4420804 (1983-12-01), Nishino

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