JPS57207919A - Load current controlling circuit - Google Patents

Load current controlling circuit

Info

Publication number
JPS57207919A
JPS57207919A JP9442681A JP9442681A JPS57207919A JP S57207919 A JPS57207919 A JP S57207919A JP 9442681 A JP9442681 A JP 9442681A JP 9442681 A JP9442681 A JP 9442681A JP S57207919 A JPS57207919 A JP S57207919A
Authority
JP
Japan
Prior art keywords
circuit
dtc
voltage
power source
load current
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
JP9442681A
Other languages
Japanese (ja)
Other versions
JPS6256754B2 (en
Inventor
Yuichiro Furukawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9442681A priority Critical patent/JPS57207919A/en
Publication of JPS57207919A publication Critical patent/JPS57207919A/en
Publication of JPS6256754B2 publication Critical patent/JPS6256754B2/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
    • 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)
  • Dc-Dc Converters (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

PURPOSE:To stabilize the circuit operation which depends on the load current, by changing the duty cycle of the pulse signal which controls the operation of the load current controlling element in accordance with the variation of the supply voltage. CONSTITUTION:A load current IL supplied from a power source 11 to a load 12 is supplied to the collector of a grounded-emitter transistor (TR) 14 installed in a load controlling circuit 21. In the circuit 21, a voltage detecting circuit 22 which detects the variation of the voltage of the power source 11, an oscillating circuit 23 which sets the duty cycle DTC of the pulse signal in accordance with the output signal of the circuit 22 and supplies a pulse phi2 of the duty cycle DTC set in the base of the TR 14, and a DTC controlling circuit 24 are installed. When the voltage of the power source 11 is detected by the circuit 21 and the voltage becomes low level, the electric current IL can be enlarged by enlarging the DTC of the pulse phi2 and also enlarging the DTC of the switching of the TR 14. When the voltage of the power source 11 becomes higher by electric charging, the electric current IL can be reduced by reducing the DTC of the pulse.
JP9442681A 1981-06-18 1981-06-18 Load current controlling circuit Granted JPS57207919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9442681A JPS57207919A (en) 1981-06-18 1981-06-18 Load current controlling circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9442681A JPS57207919A (en) 1981-06-18 1981-06-18 Load current controlling circuit

Publications (2)

Publication Number Publication Date
JPS57207919A true JPS57207919A (en) 1982-12-20
JPS6256754B2 JPS6256754B2 (en) 1987-11-27

Family

ID=14109899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9442681A Granted JPS57207919A (en) 1981-06-18 1981-06-18 Load current controlling circuit

Country Status (1)

Country Link
JP (1) JPS57207919A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5566274A (en) * 1978-11-13 1980-05-19 Fuji Electric Co Ltd Chopper-control apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5566274A (en) * 1978-11-13 1980-05-19 Fuji Electric Co Ltd Chopper-control apparatus

Also Published As

Publication number Publication date
JPS6256754B2 (en) 1987-11-27

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