JPS5740364A - High voltage generating apparatus - Google Patents

High voltage generating apparatus

Info

Publication number
JPS5740364A
JPS5740364A JP11453880A JP11453880A JPS5740364A JP S5740364 A JPS5740364 A JP S5740364A JP 11453880 A JP11453880 A JP 11453880A JP 11453880 A JP11453880 A JP 11453880A JP S5740364 A JPS5740364 A JP S5740364A
Authority
JP
Japan
Prior art keywords
voltage
output voltage
constant value
corona discharge
detecting circuit
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
JP11453880A
Other languages
Japanese (ja)
Inventor
Hideyasu Endo
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 Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP11453880A priority Critical patent/JPS5740364A/en
Publication of JPS5740364A publication Critical patent/JPS5740364A/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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To prevent the generation of abnormal voltages at the time of light loads, by providing a current control means which detects only a corona discharge current and controls it at a constant value and a voltage control means which detects an output voltage and maintains it at a constant value. CONSTITUTION:At the normal operation, the output voltage of a voltage detecting circuit 30 is larger than the output voltage of a current detecting circuit 31; The output signal from a differential amplifier DA2 is outputted to a pulse width control device 33 via a diode 4. The corona discharge current flowing from corona discharge wire 26 to a charging member 29 is controlled at a constant value. Then the discharge condition is varied, the output voltage of a voltage increasing rectifier circuit 24 is increased, and the output voltage of the voltage detecting circuit 30 is increased. The output signal of a differential amplifier DA, is inputted to the pulse width control device 33 via a diode D3, and the output voltage of the voltage increasing circuit 24 is controlled at a constant value.
JP11453880A 1980-08-20 1980-08-20 High voltage generating apparatus Pending JPS5740364A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11453880A JPS5740364A (en) 1980-08-20 1980-08-20 High voltage generating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11453880A JPS5740364A (en) 1980-08-20 1980-08-20 High voltage generating apparatus

Publications (1)

Publication Number Publication Date
JPS5740364A true JPS5740364A (en) 1982-03-05

Family

ID=14640261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11453880A Pending JPS5740364A (en) 1980-08-20 1980-08-20 High voltage generating apparatus

Country Status (1)

Country Link
JP (1) JPS5740364A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562522A (en) * 1983-12-30 1985-12-31 Honeywell Inc. Power supply for an electrostatic air cleaner with a modulated pulse width voltage input having a backup pulse width limiting means
JPH0252375A (en) * 1988-08-16 1990-02-21 Toshiba Corp Electrostatic charger output adjusting device for image forming device
JP2002286776A (en) * 2001-03-27 2002-10-03 Toray Ind Inc Performance measuring device of discharger

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562522A (en) * 1983-12-30 1985-12-31 Honeywell Inc. Power supply for an electrostatic air cleaner with a modulated pulse width voltage input having a backup pulse width limiting means
JPH0252375A (en) * 1988-08-16 1990-02-21 Toshiba Corp Electrostatic charger output adjusting device for image forming device
JP2002286776A (en) * 2001-03-27 2002-10-03 Toray Ind Inc Performance measuring device of discharger
JP4736215B2 (en) * 2001-03-27 2011-07-27 東レ株式会社 Discharger performance measuring device

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