Method and apparatus for providing selectable output voltages

Details Method and apparatus for providing selectable output voltages Method and apparatus for providing selectable output voltages

2009-05-19

2010-10-12

Riley, Shawn (Department: 2838)

Inductor devices

With means to change coil length or connections

Series change

Reissue Patent

active

RE041814

ABSTRACT:
A transformer is provided along with a combination of bridging tap-changers to provide a wide range of selectable output voltages in discrete, relatively small voltage steps where the highest voltage is more than double the lowest output voltage. Relatively inexpensive, off-the-shelf, bridging tap-changers are utilized in conjunction with transformer winding schemes to provide a low winding loss ratio.

REFERENCES:
patent: 3388320 (1968-06-01), Schoendube et al.
patent: 3818402 (1974-06-01), Golaski et al.
patent: 4220911 (1980-09-01), Rosa
patent: 7463498 (2008-12-01), Djekic et al.

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