JPS57145576A - Charging circuit to storage capacitor - Google Patents

Charging circuit to storage capacitor

Info

Publication number
JPS57145576A
JPS57145576A JP2845081A JP2845081A JPS57145576A JP S57145576 A JPS57145576 A JP S57145576A JP 2845081 A JP2845081 A JP 2845081A JP 2845081 A JP2845081 A JP 2845081A JP S57145576 A JPS57145576 A JP S57145576A
Authority
JP
Japan
Prior art keywords
transistor
voltage
base
transistors
power supply
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.)
Granted
Application number
JP2845081A
Other languages
Japanese (ja)
Other versions
JPS627777B2 (en
Inventor
Minoru Tanio
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.)
Sun Pack Co Ltd
Sunpak KK
Original Assignee
Sun Pack Co Ltd
Sunpak KK
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 Sun Pack Co Ltd, Sunpak KK filed Critical Sun Pack Co Ltd
Priority to JP2845081A priority Critical patent/JPS57145576A/en
Publication of JPS57145576A publication Critical patent/JPS57145576A/en
Publication of JPS627777B2 publication Critical patent/JPS627777B2/ja
Granted 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To prevent the subject transistor from being damaged by a method wherein the differentiation circuit is connected between the transistor stopping the operation of DC-DC converter circuit and the low voltage power supply. CONSTITUTION:The capacitor 17 constituting the differentiation circuit is connected between the base of the transistor 14 and the plus side of the power supply 1. When the voltage of the storage capacitor 11 is raised exceeding the specified voltage, the Zener diode 13 is conducted and the bias is impressed on the base of the transistor 16 through the intermediary of the transistors 14 and 15 and the transistor 16 is transferred from the disconnected region to the unsaturated region to reduce the primary side current of the oscillating transformer 9. Consequently, the voltage of the power supply 1 is raised and the raised voltage is impressed on the base of the transistor 14 through the intermediary of the capacitor 17 making the transistors 14 and 15 reach the saturated region. Thus the base emitters of the oscillating transistors 4 and 5 are completely shortcircuited stopping the oscillation without fail.
JP2845081A 1981-03-02 1981-03-02 Charging circuit to storage capacitor Granted JPS57145576A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2845081A JPS57145576A (en) 1981-03-02 1981-03-02 Charging circuit to storage capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2845081A JPS57145576A (en) 1981-03-02 1981-03-02 Charging circuit to storage capacitor

Publications (2)

Publication Number Publication Date
JPS57145576A true JPS57145576A (en) 1982-09-08
JPS627777B2 JPS627777B2 (en) 1987-02-19

Family

ID=12248996

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2845081A Granted JPS57145576A (en) 1981-03-02 1981-03-02 Charging circuit to storage capacitor

Country Status (1)

Country Link
JP (1) JPS57145576A (en)

Also Published As

Publication number Publication date
JPS627777B2 (en) 1987-02-19

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