| US 7,446,640 B2 | ||
| Leakage transformer | ||
| Masaki Saito, Tokyo (Japan); and Hiroki Miura, Tokyo (Japan) | ||
| Assigned to Sumida Corporation, Tokyo (Japan) | ||
| Appl. No. 11/574,352 PCT Filed Jul. 12, 2005, PCT No. PCT/JP2005/012838 § 371(c)(1), (2), (4) Date Feb. 27, 2007, PCT Pub. No. WO2006/025156, PCT Pub. Date Mar. 09, 2006. |
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| Claims priority of application No. 2004-254230 (JP), filed on Sep. 01, 2004. | ||
| Prior Publication US 2007/0257760 A1, Nov. 08, 2007 | ||
| Int. Cl. H01F 27/24 (2006.01) | ||
| U.S. Cl. 336—212 | 4 Claims |
| 1. A leakage transformer, comprising:
a primary winding;
a secondary winding wound at a part on an extension of a winding part of the primary winding separately from the primary winding
and having a coil sectional area smaller than that of the primary winding;
a first core and a second core each having a center core part formed linearly, a peripheral core part forming a magnetic path
on the outer side of the primary winding and the secondary winding, the primary winding being wound around the center core
part of at least one of the first core and the second core, the secondary winding being wound around the center core part
of at least one of the first core and the second core; and
a leakage core part formed in parallel with the center core part and extending through only the primary winding.
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