High efficiency passive component voltage converter

Details High efficiency passive component voltage converter High efficiency passive component voltage converter

1990-08-27

1992-02-18

Wong, Peter S.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 53, H02M 706

Patent

active

050899490

ABSTRACT:
A circuit configuration is presented which utilizes diodes, polarized capacitors and a bipolar capacitor to yield a high voltage AC to low voltage DC converter that is virtually free of EMI and which generates little real heat power. This is accomplished by assuring that the voltage reduction circuit components retain the leading current (phase shift) characteristic inherent in capacitive devices. By accomplishing this, the heat dissipation is limited to the product of the current and voltage multiplied by the cosine of the angle between them.

REFERENCES:
patent: 3743914 (1973-07-01), Holz
patent: 4207516 (1980-06-01), Babcock
patent: 4672290 (1987-06-01), Ghosh et al.
patent: 4685046 (1987-08-01), Sanders
patent: 4860184 (1989-08-01), Tabisz et al.
Thom, Douglas, Capacitor Drops Voltage With Little Heat for Low-Cost, Low Voltage Power Supply, Electronic Design, p. 24, 11/22/1975.

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