Title:
POWER SUPPLY UNIT
Document Type and Number:
Japanese Patent JPH10271832
Kind Code:
A
Abstract:
To suppress input harmonic distortion with a simple circuit configuration, and current passing through a switching element.
A filer capacitor C4 is connected between DC output terminals of a full wave rectifier consisting of diodes D1 to D4 through a diode 5, and a serial circuit of switching elements Q1, Q2 is connected across it. High-frequency input current from an AC power source Vs is distributed into a load circuit including a resonance circuit constituted of a capacitor C2 and an inductor L2 and the serial circuit to a charging circuit including an inductor L1 so that switching current may be reduced, and is controlled so that input current harmonic distortion may be improved.
Inventors:
MURAKAMI YOSHINOBU
NAKANO TOMOYUKI
MANNAMI HIROAKI
NAKANO TOMOYUKI
MANNAMI HIROAKI
Application Number:
JP7419897A
Publication Date:
October 09, 1998
Filing Date:
March 26, 1997
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
H05B41/24; H02M1/12; H02M7/06; H02M7/48; H02M7/538; (IPC1-7): H02M7/48; H02M1/12; H02M7/06; H02M7/538; H05B41/24
Attorney, Agent or Firm:
Kurata Masahiko
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