| 摘要 |
PROBLEM TO BE SOLVED: To provide an AC/DC converter including a resonance converter which uses an extremely small number of parts, has a reactive impedance in which an input impedance of the AC/DC converter is extremely small and also supplies with reliability the constant DC power supply voltage within the range of a wide output power. SOLUTION: In order to provide an AC/DC converter including a resonance converter which is formed of an extremely small number of parts, has a reactive impedance including extremely small input impedance and supplies with higher reliability the constant DC power supply voltage Uout in the wider output power range, capacitive C2 and inductive n3 couplings are provided to couple the resonance converter 8 to the point 5 between the resonance converter 8 and a rectifier 1 to rectify the AC voltage Uin to be applied to the resonance converter 8 and AC/DC converter.
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