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JPS55150774A - Chopper type current control system - Google Patents

Chopper type current control system

Info

Publication number
JPS55150774A
JPS55150774A JP5805979A JP5805979A JPS55150774A JP S55150774 A JPS55150774 A JP S55150774A JP 5805979 A JP5805979 A JP 5805979A JP 5805979 A JP5805979 A JP 5805979A JP S55150774 A JPS55150774 A JP S55150774A
Authority
JP
Japan
Prior art keywords
current
circuit
output
load
gate
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
JP5805979A
Other languages
Japanese (ja)
Inventor
Kenichi Onda
Akiteru Ueda
Isao Hashimoto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5805979A priority Critical patent/JPS55150774A/en
Publication of JPS55150774A publication Critical patent/JPS55150774A/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
    • H02M3/125—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 thyratron or thyristor type requiring extinguishing means
    • H02M3/135—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M3/137—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 thyratron or thyristor type requiring extinguishing means 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 provide an accurate constant-current control for a wide range of current setpoints by controlling a chopper circuit so that the ripple of a load current is varied with the setpoint of the current supplied for a load. CONSTITUTION:With a starting signal input to a constant-current control circuit 18, the output of the circuit 18 is on a high level, and in response to this, a gate circuit 17 allows an on-gate current to flow to a GTO 16. The circuit 18 compares the output of a current detection circuit 3 with the output of a current-setting signal generation circuit 4 at two reference points. When a load current reaches IM, the output of the circuit 18 is on a low level, and in response to this, the gate circuit 17 allows an off-gate current to flow to the GTO16 to turn off. From the point, the load current begins to fall, and when it reaches Im, the output of the circuit 18 is on a high level again, so that the GTO is ignited, and the load current begins to rise. After this, the same operation is repeated. Thus, since DELTAI varies with Is, the ratio of Isto DELTAI can be controlled to keep constant, so that a highly accurate constant-current characteristic can be obtained without producing overshoot in the load current.
JP5805979A 1979-05-14 1979-05-14 Chopper type current control system Pending JPS55150774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5805979A JPS55150774A (en) 1979-05-14 1979-05-14 Chopper type current control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5805979A JPS55150774A (en) 1979-05-14 1979-05-14 Chopper type current control system

Publications (1)

Publication Number Publication Date
JPS55150774A true JPS55150774A (en) 1980-11-22

Family

ID=13073334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5805979A Pending JPS55150774A (en) 1979-05-14 1979-05-14 Chopper type current control system

Country Status (1)

Country Link
JP (1) JPS55150774A (en)

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