Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
POWER SUPPLY CIRCUIT AND CHARGING/DISCHARGING METHOD
Document Type and Number:
Japanese Patent JP2014087158
Kind Code:
A
Abstract:

To charge a load capacitor to a voltage higher than a power supply voltage, thereby efficiently recovering the energy thereof.

A power supply circuit is configured in such a way that when a load capacitor is charged, the load capacitor is charged by changing an ON/OFF ratio of switches SW1, SW2 using a DC-DC converter functioning as a step-up circuit, and boosting its voltage higher than a power supply voltage and stepwise, and that when a load capacitor is discharged, the charge of the load capacitor C is recovered stepwise by changing an ON/OFF ratio of the switches SW1, SW2 using the DC-DC converter functioning as a step-down circuit, and stepping down the voltage of the load capacitor C 1 to 2 times the power supply voltage, both ends inclusive.


Inventors:
NAKADA SHUNJI
MORIMURA HIROKI
MATSUDA YOSHIO
Application Number:
JP2012000233759
Publication Date:
May 12, 2014
Filing Date:
October 23, 2012
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON TELEGRAPH & TELEPHONE
UNIV KANAZAWA
International Classes:
H02J7/00; H02M3/155
Attorney, Agent or Firm:
古谷 史旺
森 俊秀