Title:
電源回路及び電子装置
Document Type and Number:
Japanese Patent JP7306235
Kind Code:
B2
Abstract:
To provide a power supply circuit which can be started at low temperature in a state in which an electrolytic capacitor using electrolyte is deteriorated.SOLUTION: A power supply circuit comprises: a conversion part which converts input voltage into output voltage to be output to an output path; a control part which controls the conversion part so that the output voltage becomes constant; an electrolytic capacitor which is provided on the output path, and uses electrolyte; and a serial circuit which is connected in parallel with the electrolytic capacitor, and with which a solid electrolytic capacitor and a resistor are connected in series. For example, the sum of equivalent series resistance of the solid electrolytic capacitor and a resistance value of the resistor is larger than equivalent series resistance of the electrolytic capacitor.SELECTED DRAWING: Figure 4
Inventors:
Hiroshi Nakao
Application Number:
JP2019208923A
Publication Date:
July 11, 2023
Filing Date:
November 19, 2019
Export Citation:
Assignee:
富士通株式会社
International Classes:
H02M3/155; G01R31/00; H02M3/28
Domestic Patent References:
| JP10020946A | ||||
| JP1179428U | ||||
| JP6061112A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito