JPS5749367A - Controlling device for base current of transistor chopper - Google Patents

Controlling device for base current of transistor chopper

Info

Publication number
JPS5749367A
JPS5749367A JP12428180A JP12428180A JPS5749367A JP S5749367 A JPS5749367 A JP S5749367A JP 12428180 A JP12428180 A JP 12428180A JP 12428180 A JP12428180 A JP 12428180A JP S5749367 A JPS5749367 A JP S5749367A
Authority
JP
Japan
Prior art keywords
main transistor
base current
collector voltage
detected
proportion
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
JP12428180A
Other languages
Japanese (ja)
Inventor
Mineo Ozeki
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.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Corp
Meidensha 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 Meidensha Corp, Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Corp
Priority to JP12428180A priority Critical patent/JPS5749367A/en
Publication of JPS5749367A publication Critical patent/JPS5749367A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To reduce the heat generation of the main transistor as well as to improve the efficiency of the chopper by a method wherein the collector voltage, which changes in proportion to the load current of the main transistor, is detected and a base current is controlled in accordance with said collector voltage. CONSTITUTION:The collector voltage VCE of the main transistor 4 is detected by the driving transistor 6 which drives the main transistor 4 located on the trasistor chopper 3, and with this detected signal, the base current IB of the main transistor 4 is controlled in proportion to the current IC of a load 2. Through these procedures, the base current IB of required intensity only is feeded, when the collector voltage VCE is detected, by changing it between IB1 and IB2 in proportion to the load condition, thereby enabling to decrease the wasteful usage of power and also to reduce the heat generation of the main transistor.
JP12428180A 1980-09-08 1980-09-08 Controlling device for base current of transistor chopper Pending JPS5749367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12428180A JPS5749367A (en) 1980-09-08 1980-09-08 Controlling device for base current of transistor chopper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12428180A JPS5749367A (en) 1980-09-08 1980-09-08 Controlling device for base current of transistor chopper

Publications (1)

Publication Number Publication Date
JPS5749367A true JPS5749367A (en) 1982-03-23

Family

ID=14881449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12428180A Pending JPS5749367A (en) 1980-09-08 1980-09-08 Controlling device for base current of transistor chopper

Country Status (1)

Country Link
JP (1) JPS5749367A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5923290U (en) * 1982-07-30 1984-02-13 株式会社東海理化電機製作所 Chopper control circuit with overcurrent protection circuit
EP0763882A4 (en) * 1994-05-12 1999-06-09 Komatsu Mfg Co Ltd Load driving device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5923290U (en) * 1982-07-30 1984-02-13 株式会社東海理化電機製作所 Chopper control circuit with overcurrent protection circuit
EP0763882A4 (en) * 1994-05-12 1999-06-09 Komatsu Mfg Co Ltd Load driving device

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