| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact and lightweight switching power supply device which is manufactured at low cost. SOLUTION: The switching power supply device 1 is a so-called series resonance converter, and includes: a transformer T, capacitors C1, C2 serially-connected to a primary winding T1 of the transformer T, an inductor L1 formed integrally with a first secondary winding T2 of the transformer T, and an inductor L2 formed integrally with a second secondary winding T3 of the transformer T. The inductors L1, L2 have liner inductance characteristics with respect to a flowing current. COPYRIGHT: (C)2010,JPO&INPIT
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