Power supply circuit for electrical apparatus

Details Power supply circuit for electrical apparatus Power supply circuit for electrical apparatus

1982-03-17

1984-02-21

Shoop, William M.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

H02P 1326

Patent

active

044333692

ABSTRACT:
In a power supply circuit designed so that an AC voltage is applied to the primary side of a transformer, and that the voltage derived on the secondary side thereof is rectified and smoothed, arrangement is provided that the AC voltage applied to the primary side is subjected to switching at least twice in each half cycle thereof to insure that the current which flows on the primary side is timewisely divided, whereby the peak value of the current flowing on the primary side of the transformer is suppressed to a small level. Thus, it is possible to realize a substantial reduction of noises as a result of minimized dI/dt and current value and also to realize a substantial reduction of power loss as a result of minimized current value.

REFERENCES:
patent: 3622849 (1971-11-01), Kelly, Jr. et al.
patent: 4302717 (1981-11-01), Olla
patent: 4323845 (1982-04-01), Leach

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