High efficiency transformerless AC/DC converter

Details High efficiency transformerless AC/DC converter High efficiency transformerless AC/DC converter

1985-07-26

1987-11-24

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 89, 363127, 363128, 323285, 323300, H02M 704

Patent

active

047093226

ABSTRACT:
An electronic power supply that converts alternating current to a regulated DC voltage with high efficiency is accomplished by a switch that connects the input AC power source directly to the DC output filter capacitor. This occurs when the input voltage equals the output voltage, and the output voltage is less than the set value.
This power supply can be used with low impedance AC power sources capable of providing high surge currents such as commercial utility lines.

REFERENCES:
patent: 3353082 (1967-11-01), Mellott et al.
patent: 3478258 (1969-11-01), Nagai
patent: 4127895 (1978-11-01), Krueger
patent: 4347561 (1982-08-01), McLellan
patent: 4490779 (1984-12-01), Minks

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