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Title:
VOLTAGE TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2011/068044
Kind Code:
A1
Abstract:
A voltage transformer comprises: a primary winding (3) that receives an AC voltage; a plurality of secondary windings (4a, 4b) that have mutually different numbers of turns; and a voltage converter circuit (5) for converting AC voltages induced in the plurality of secondary windings (4a, 4b). The plurality of secondary windings (4a, 4b) each have first and second terminals at which the potentials are not fixed. The first and second terminals are provided individually for each of the secondary windings (4a, 4b). The voltage transformer further comprises a switching circuit (8) for selectively connecting the first and second terminals of either one of the plurality of secondary windings (4a, 4b) to the voltage converter circuit (5).

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Inventors:
NODA TOSHIHIRO (JP)
KONII KATSUMI (JP)
Application Number:
PCT/JP2010/070702
Publication Date:
June 09, 2011
Filing Date:
November 19, 2010
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
NODA TOSHIHIRO (JP)
KONII KATSUMI (JP)
International Classes:
H01F29/02; B60L9/28; G05F1/14
Foreign References:
JPS5145257A1976-04-17
JPH02307303A1990-12-20
JP2002315344A2002-10-25
JP2009182115A2009-08-13
JPS63209113A1988-08-30
Other References:
See also references of EP 2509083A4
Attorney, Agent or Firm:
Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)
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