JPS56152017A - Current controlling system of power source circuit - Google Patents

Current controlling system of power source circuit

Info

Publication number
JPS56152017A
JPS56152017A JP5516380A JP5516380A JPS56152017A JP S56152017 A JPS56152017 A JP S56152017A JP 5516380 A JP5516380 A JP 5516380A JP 5516380 A JP5516380 A JP 5516380A JP S56152017 A JPS56152017 A JP S56152017A
Authority
JP
Japan
Prior art keywords
circuit
current
overcurrent
switching element
stationary
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
JP5516380A
Other languages
Japanese (ja)
Inventor
Naoto Kagawa
Kunio Iwamoto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP5516380A priority Critical patent/JPS56152017A/en
Publication of JPS56152017A publication Critical patent/JPS56152017A/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)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To decrease the output voltage and current of a smoothing circuit in an overcurrent state and to return a comparison control circuit to a stationary state at releasing time from the overcurrent state, by forming a closed loop by using a current detecting circuit, switching element, smoothing circuit, etc. CONSTITUTION:Current detecting circuit 4 consists of current detecting resistance 12, transistor TR13 turning on when a current control function is in operation, constant voltage generating circuit 14, etc., and circuit 4, switching element 2, smoothing circuit 3, etc., form a closed loop. Once an overcurrent flows through element 2, the on-period of element 2 is shortened to decrease both the output voltage and current of smoothing circuit 3. Once release from the overcurrent state is obtained, the current flowing through resistance 12 gets stationary and the overcurrent control signal supplied via TR13 is held at about 0V, placing comparison control circuit 6 and switching element driving circuit 7 in stationary states.
JP5516380A 1980-04-25 1980-04-25 Current controlling system of power source circuit Pending JPS56152017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5516380A JPS56152017A (en) 1980-04-25 1980-04-25 Current controlling system of power source circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5516380A JPS56152017A (en) 1980-04-25 1980-04-25 Current controlling system of power source circuit

Publications (1)

Publication Number Publication Date
JPS56152017A true JPS56152017A (en) 1981-11-25

Family

ID=12991067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5516380A Pending JPS56152017A (en) 1980-04-25 1980-04-25 Current controlling system of power source circuit

Country Status (1)

Country Link
JP (1) JPS56152017A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4507600A (en) * 1982-04-02 1985-03-26 Hitachi, Ltd. Two-terminal current regulator
JPH0246130A (en) * 1988-08-04 1990-02-15 Fuji Electric Co Ltd Overload protective circuit for switching regulator
JPH04504048A (en) * 1989-03-08 1992-07-16 アー　エヌ　テー　ナッハリヒテンテヒニーク　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング Switching regulator driving method and driving device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5151734A (en) * 1974-10-31 1976-05-07 Sharp Kk KADENRYUHOGOKAIRO
JPS521443A (en) * 1975-06-24 1977-01-07 Toa Denki Kk Excessive current limted circuit
JPS5233029B2 (en) * 1975-08-11 1977-08-25

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5151734A (en) * 1974-10-31 1976-05-07 Sharp Kk KADENRYUHOGOKAIRO
JPS521443A (en) * 1975-06-24 1977-01-07 Toa Denki Kk Excessive current limted circuit
JPS5233029B2 (en) * 1975-08-11 1977-08-25

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4507600A (en) * 1982-04-02 1985-03-26 Hitachi, Ltd. Two-terminal current regulator
JPH0246130A (en) * 1988-08-04 1990-02-15 Fuji Electric Co Ltd Overload protective circuit for switching regulator
JPH04504048A (en) * 1989-03-08 1992-07-16 アー　エヌ　テー　ナッハリヒテンテヒニーク　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング Switching regulator driving method and driving device

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