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Title:
POWER SOURCE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2003/012570
Kind Code:
A1
Abstract:
A power source circuit (10) capable of reducing power consumption for generating a constant voltage and a constant current, and a circuit scale, comprising FETs (20−23, 30, 40, 42), a resistor (50), and an output buffer (60), wherein FETs (20, 30, 40, 42), the resistor (50) and the output buffer (60) constitute a constant voltage source, and FETs (20−23, 30. 40, 42) and the resistor (50) constitute a constant current source. Components necessary to generate one type of constant voltage and three types of constant current are shared.

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Inventors:
MIYAGI HIROSHI (JP)
Application Number:
PCT/JP2002/006555
Publication Date:
February 13, 2003
Filing Date:
June 28, 2002
Export Citation:
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Assignee:
NIIGATA SEIMITSU CO LTD (JP)
MIYAGI HIROSHI (JP)
International Classes:
H01L27/04; G05F3/26; H01L21/822; H03F3/343; (IPC1-7): G05F3/26
Foreign References:
US5572074A1996-11-05
US5652929A1997-07-29
JP2000269426A2000-09-29
US5391979A1995-02-21
US6060918A2000-05-09
Attorney, Agent or Firm:
Amagai, Masahiko (2nd Floor Kitashinjuku OC Build., 8-15, Kitashinjuku 1-chom, Shinjuku-ku Tokyo, JP)
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