CN100472384C - 电源电路 - Google Patents

电源电路 Download PDF

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Publication number
CN100472384C
CN100472384C CNB2005100661607A CN200510066160A CN100472384C CN 100472384 C CN100472384 C CN 100472384C CN B2005100661607 A CNB2005100661607 A CN B2005100661607A CN 200510066160 A CN200510066160 A CN 200510066160A CN 100472384 C CN100472384 C CN 100472384C
Authority
CN
China
Prior art keywords
voltage
circuit
loader
power supply
transistor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2005100661607A
Other languages
English (en)
Chinese (zh)
Other versions
CN1690906A (zh
Inventor
垣内伸一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Imaging Co Ltd
Original Assignee
Hoya Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoya Corp filed Critical Hoya Corp
Publication of CN1690906A publication Critical patent/CN1690906A/zh
Application granted granted Critical
Publication of CN100472384C publication Critical patent/CN100472384C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/56—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
    • G05F1/577—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices for plural loads
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Dc-Dc Converters (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Logic Circuits (AREA)
CNB2005100661607A 2004-04-21 2005-04-21 电源电路 Expired - Fee Related CN100472384C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004125829A JP4530709B2 (ja) 2004-04-21 2004-04-21 一定電圧を供給可能な電源回路
JP2004125829 2004-04-21

Publications (2)

Publication Number Publication Date
CN1690906A CN1690906A (zh) 2005-11-02
CN100472384C true CN100472384C (zh) 2009-03-25

Family

ID=35135771

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005100661607A Expired - Fee Related CN100472384C (zh) 2004-04-21 2005-04-21 电源电路

Country Status (5)

Country Link
US (1) US7166932B2 (enExample)
JP (1) JP4530709B2 (enExample)
KR (1) KR100872067B1 (enExample)
CN (1) CN100472384C (enExample)
TW (1) TWI320255B (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200919917A (en) * 2007-10-19 2009-05-01 Syspotek Corp Power supply device with voltage conversion circuit
JP6236746B2 (ja) * 2014-02-19 2017-11-29 リコーイメージング株式会社 電圧変換回路、ストロボ装置、撮影装置およびサージ電圧低減方法
CN112135394B (zh) * 2020-10-22 2025-07-01 深圳尚莱特照明技术有限公司 一种可升压降压的恒流led驱动电路

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5247694A (en) * 1975-10-15 1977-04-15 Nippon Telegr & Teleph Corp <Ntt> Solar cell power supply device
JPS63168512U (enExample) * 1987-04-15 1988-11-02
KR0151839B1 (ko) * 1989-05-26 1998-12-15 야마무라 가쓰미 전원 회로
US5049805A (en) * 1990-05-25 1991-09-17 International Business Machines Corporation Voltage sensitive switch
JPH0543787U (ja) * 1991-11-13 1993-06-11 三洋電機株式会社 電子機器の電源装置
JP3122239B2 (ja) * 1992-07-23 2001-01-09 株式会社東芝 半導体集積回路
JPH07104015A (ja) 1993-10-01 1995-04-21 Mitsubishi Electric Corp 電圧検知回路
JP3626521B2 (ja) * 1994-02-28 2005-03-09 三菱電機株式会社 基準電位発生回路、電位検出回路および半導体集積回路装置
JP3198215B2 (ja) * 1994-06-17 2001-08-13 キヤノン株式会社 スイッチング電源装置およびその電力供給方法
JPH118932A (ja) * 1997-06-13 1999-01-12 Dx Antenna Co Ltd 電気二重層コンデンサによって駆動される装置
JP3098471B2 (ja) * 1997-09-22 2000-10-16 山形日本電気株式会社 低電源用半導体装置
WO1999026290A1 (en) * 1997-11-13 1999-05-27 Seiko Epson Corporation Semiconductor integrated circuit, operating status detector, and electronic equipment
KR19990056915A (ko) * 1997-12-29 1999-07-15 유기범 이동단말기에서의 일정한 배터리전원 공급장치
JP3863663B2 (ja) * 1998-06-12 2006-12-27 三洋電機株式会社 増幅回路
JP2000040394A (ja) * 1998-07-21 2000-02-08 Fujitsu Ltd 半導体装置
JP2001125009A (ja) 1999-10-28 2001-05-11 Asahi Optical Co Ltd 内視鏡装置
JP3679681B2 (ja) 2000-04-05 2005-08-03 ペンタックス株式会社 電源装置及び電気二重層コンデンサの充電方法
JP3947906B2 (ja) 2001-08-30 2007-07-25 株式会社日立製作所 バックアップ電源と電源装置

Also Published As

Publication number Publication date
TW200616302A (en) 2006-05-16
US20050237043A1 (en) 2005-10-27
US7166932B2 (en) 2007-01-23
KR100872067B1 (ko) 2008-12-05
TWI320255B (en) 2010-02-01
JP4530709B2 (ja) 2010-08-25
KR20060045697A (ko) 2006-05-17
JP2005312183A (ja) 2005-11-04
CN1690906A (zh) 2005-11-02

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
ASS Succession or assignment of patent right

Owner name: HOYA CO., LTD.

Free format text: FORMER OWNER: PENTAX CO., LTD.

Effective date: 20080926

C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20080926

Address after: Tokyo, Japan

Applicant after: HOYA Corporation

Address before: Tokyo, Japan

Applicant before: Pentax Co., Ltd.

C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: PENTAX RICOH IMAGING COMPANY, LTD.

Free format text: FORMER OWNER: HOYA CORP.

Effective date: 20111215

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20111215

Address after: Tokyo, Japan, Japan

Patentee after: Pentax Ricoh Imaging Co., Ltd.

Address before: Tokyo, Japan

Patentee before: HOYA Corporation

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090325

Termination date: 20170421

CF01 Termination of patent right due to non-payment of annual fee