JPS57137910A - Lamp supply voltage controller of copying machine - Google Patents

Lamp supply voltage controller of copying machine

Info

Publication number
JPS57137910A
JPS57137910A JP56023726A JP2372681A JPS57137910A JP S57137910 A JPS57137910 A JP S57137910A JP 56023726 A JP56023726 A JP 56023726A JP 2372681 A JP2372681 A JP 2372681A JP S57137910 A JPS57137910 A JP S57137910A
Authority
JP
Japan
Prior art keywords
voltage
control system
supply voltage
copying machine
voltage controller
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.)
Pending
Application number
JP56023726A
Other languages
Japanese (ja)
Inventor
Zaiken Zen
Eiju Kuroda
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.)
Fuji Electric Co Ltd
Minolta Co Ltd
Original Assignee
Fuji Electric Co Ltd
Minolta Co Ltd
Fuji Electric Manufacturing Co Ltd
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 Fuji Electric Co Ltd, Minolta Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP56023726A priority Critical patent/JPS57137910A/en
Publication of JPS57137910A publication Critical patent/JPS57137910A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Dc-Dc Converters (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Of Exposure In Printing And Copying (AREA)

Abstract

PURPOSE:To stabilize the voltage applied to a lamp, and also to use the same lamp irrespective of rating of an electric power supply, by adopting a switching regulation system of a pulse width control system for changing a duty ratio of turn-on and turn-off in a constant period. CONSTITUTION:A DC output from a rectifying circuit 4 is turned on and off in a period which has been set by a frequency setting circuit 9, its duty ratio is corrected by a detection value by a voltage detecting circuit 7, output voltage is made to conform with voltage which has been set by a voltage setting circuit 10, the stabilized voltage is supplied. In this regard, the frequency control system can be used instead of the pulse width control system.
JP56023726A 1981-02-19 1981-02-19 Lamp supply voltage controller of copying machine Pending JPS57137910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56023726A JPS57137910A (en) 1981-02-19 1981-02-19 Lamp supply voltage controller of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56023726A JPS57137910A (en) 1981-02-19 1981-02-19 Lamp supply voltage controller of copying machine

Publications (1)

Publication Number Publication Date
JPS57137910A true JPS57137910A (en) 1982-08-25

Family

ID=12118313

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56023726A Pending JPS57137910A (en) 1981-02-19 1981-02-19 Lamp supply voltage controller of copying machine

Country Status (1)

Country Link
JP (1) JPS57137910A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5953865A (en) * 1982-09-22 1984-03-28 Canon Inc Color picture recorder
JPS61173492A (en) * 1985-01-25 1986-08-05 松下電器産業株式会社 High frequency lighting apparatus
JPH01170367A (en) * 1987-12-25 1989-07-05 Canon Inc Power source

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5953865A (en) * 1982-09-22 1984-03-28 Canon Inc Color picture recorder
JPH0417497B2 (en) * 1982-09-22 1992-03-26 Canon Kk
JPS61173492A (en) * 1985-01-25 1986-08-05 松下電器産業株式会社 High frequency lighting apparatus
JPH01170367A (en) * 1987-12-25 1989-07-05 Canon Inc Power source

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