Title:
DC POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2000175442
Kind Code:
A
Abstract:
To reduce a ripple noise voltage by stabilizing an output voltage.
The output voltage of a voltage output terminal VO is detected by an output voltage detection circuit 1, the base current of a control transistor Q2 is controlled, and the base current of a transistor Q1, where the control transistor Q2 is a main switch, is controlled. In this case, a transistor where turn-on and turn-off time is 50 nsec each is used as the control transistor Q2.
Inventors:
SANO NAOTO
KUNII SHINGO
KUNII SHINGO
Application Number:
JP34371298A
Publication Date:
June 23, 2000
Filing Date:
December 03, 1998
Export Citation:
Assignee:
MURATA MANUFACTURING CO
International Classes:
H02M3/155; H02M3/338; (IPC1-7): H02M3/155; H02M3/338
Attorney, Agent or Firm:
Hisaro Fukami (1 person outside)