Title:
電源装置
Document Type and Number:
Japanese Patent JP4439979
Kind Code:
B2
Abstract:
The number of switches on the primary winding side of a transformer is decreased and ripples contained in the output voltage are greatly reduced. In a state I, Sia and Sib are switched ON, in a state II, Sim and Sia are switched ON, in a state III, Sia and Sib are switched ON, and in a state IV, Sim and Sib are switched ON. As a result, in the states I to III, a transformer Trsa is connected to a capacitor Ci, in the state IV, the transformer Trsa is connected to an input power source Vi supplying an electric current in the direction opposite to that of the capacitor Ci. Further, in states I, III, and IV, the transformer Trsb is connected to the capacitor Ci, and in state II, the transformer Trsb is connected to the input power source Vi supplying an electric current in the direction opposite to that of the capacitor Ci. Further, in states I to III, the electric current generated on the secondary winding side of the transformer Trsa is supplied by a rectifying diode Doa to a load R, and in states I, III, and IV, the electric current generated on the secondary winding side of the transformer Trsb is supplied by a rectifying diode Dob to the load R.
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Inventors:
Koosuke Harada
Hitoshi Nishijima
Hitoshi Nishijima
Application Number:
JP2004116015A
Publication Date:
March 24, 2010
Filing Date:
April 09, 2004
Export Citation:
Assignee:
TAIYO YUDEN CO.,LTD.
International Classes:
H02J1/00; H02M3/28; H02M1/15; H02M3/335
Domestic Patent References:
| JP6005387U | ||||
| JP2003164151A |
Attorney, Agent or Firm:
Kazuo Harada