INVERTER TRANSFORMER

WIPO Patent Application WO/2006/059630

A1

An inverter transformer prevents occurrence of uneven luminance by reducing variation in inductance of the secondary winding and variation in leakage inductance so as to make the lamp current uniform. A primary winding (12) is applied to the center of a bobbin (10) and a secondary winding (14) is applied to the both sides thereof. A rod core (16) is inserted into the winding shaft, a rectangular frame core (18) is arranged to surround the outer circumference of the primary and secondary windings, and the rod core is opposed to the rectangular frame core through a gap sheet, thus constituting a two-output inverter transformer. A relation L2-L1>2t is set, wherein L1 is the length of the rectangular frame core, L2 is the length of the rod core, and t is the thickness of the gap sheet. They are combined in such a manner that the rod core projects uniformly from the rectangular frame core.

JPH08250346

TRANSFORMER FOR ARC FURNACE

FUJII AKIHIRO (JP)
HIROHASHI TORU (JP)
ITO NOBUAKI (JP)
HIRONAKA KIYOSHI (JP)
YAMADA KATSUO (JP)
SUDO AKIHIRO (JP)
SUZUKI KENICHIRO (JP)

PCT/JP2005/021966

June 08, 2006

November 30, 2005

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FDK CORP (JP)
FUJII AKIHIRO (JP)
HIROHASHI TORU (JP)
ITO NOBUAKI (JP)
HIRONAKA KIYOSHI (JP)
YAMADA KATSUO (JP)
SUDO AKIHIRO (JP)
SUZUKI KENICHIRO (JP)

H01F38/08; H01F27/24; H01F27/32

JPH08227815A	1996-09-03
JPS5476967A	1979-06-20
JPH02146815U	1990-12-13

ISSHIKI & CO. (12-7 Shinbashi 2-chom, Minato-ku Tokyo 04, JP)

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