Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1992-03-09
1992-10-27
Voeltz, Emanuel T.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363133, 331112, 331113R, H02M 3338
Patent
active
051595400
ABSTRACT:
A self-oscillating DC to DC voltage converter having improved efficiency. The high efficiency saturable core voltage converter 100 of the present invention provides an output voltage across an output load R.sub.L in response to the input voltage at a source node 106 of a voltage source 104. The present invention includes a transistor switching network 120, 122 coupled to the source node 106. The switching network 120, 122 generates an alternating voltage in response to oscillation of the flux within a magnetic core 116. A voltage transformer 110 then impresses an output voltage across an output load R.sub.L, thus providing a load current I.sub.L. The inventive converter 100 further includes a feedback winding 112 for providing a transistor drive current to the transistor switching network 120, 122. A portion of the transistor drive current is shunted to the source node 106 by a source feedback arrangement 126, 130.
REFERENCES:
patent: 3551845 (1970-12-01), Zelina
patent: 4314327 (1982-02-01), DePuy
patent: 4519023 (1985-05-01), Lester
Denson-Low Wanda K.
Hughes Aircraft Company
Lindeen III Gordon R.
Mitchell Steven M.
Voeltz Emanuel T.
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