Title:
TRANSFORMER AND RESONANCE TYPE SWITCHING POWER SUPPLY USING THE SAME
Document Type and Number:
Japanese Patent JP2008166624
Kind Code:
A
Abstract:
To provide a transformer and a resonance type switching power supply, which can prevent an increase in size of the transformer due to a desired leakage inductance and allow miniaturization by eliminating the necessity of a large air gap.
The transformer 1 is provided with an intermediate leg 2a; a core 2 consisting of side legs 2b, 2c branched from the intermediate leg; a primary winding 3 provided on the intermediate leg 2a of the core 2; and secondary windings 5, 6 provided at least any one of the side legs 2b, 2c. With this configuration, by adjusting the number of windings for the side legs 2b, 2c of the secondary windings 5, 6, necessary leakage inductance can be easily ensured without providing an air gap.
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Inventors:
TAMURA HIDEKI
OTA TOMOHIRO
NAKADA MANABU
OTA TOMOHIRO
NAKADA MANABU
Application Number:
JP2006356782A
Publication Date:
July 17, 2008
Filing Date:
December 29, 2006
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
H01F30/00; H01F27/255; H01F27/28; H02M3/28
Domestic Patent References:
| JP2006253618A | 2006-09-21 | |||
| JP2000195732A | 2000-07-14 | |||
| JP2004112991A | 2004-04-08 | |||
| JP2001237126A | 2001-08-31 |
Foreign References:
| WO2007099683A1 | 2007-09-07 |
Attorney, Agent or Firm:
Yasuo Itaya
Katsumi Taguchi
Shinichi Mizuta
Katsumi Taguchi
Shinichi Mizuta