Title:
POWER UNIT
Document Type and Number:
Japanese Patent JP2763702
Kind Code:
B2
Abstract:
PURPOSE: To extend power sources with no limit and besides to stop the power supply to an optional extension power source.
CONSTITUTION: Bypass lines 19-1...19-n where diodes 18-1...18-n are inserted are provided at the junctions of the extension power sources 12-1...12-n connected to the basic power source 12-0. The bypass lines 19-1...19-n connected to the inner power source 13-0 steps down the output voltage from the inner power source circuit 13-0 of the basic power source 12-0 in order, and steps down the voltage, which is outputted to the expansion power source 12-n connected to that basic power source 12-0, getting over the capacity of the inner power circuit 13-0 of the basic power source 12-0, to the driving voltage of the switch driving circuit 14-n of the extension power source 12-n or less, and stops the power supply to the extension for the amount of shortage of power capacity only at power up.
Inventors:
KAGEYAMA KOSHIN
NAKAMURA MITSUO
NAKAMURA MITSUO
Application Number:
JP26001391A
Publication Date:
June 11, 1998
Filing Date:
October 08, 1991
Export Citation:
Assignee:
FUJITSU KK
International Classes:
G06F1/26; G06F1/00; H02J1/00; H02J1/10; (IPC1-7): H02J1/00; G06F1/26; H02J1/10
Domestic Patent References:
| JP3169224A |
Attorney, Agent or Firm:
Masao Yamakawa