JPS57100517A - Constant current supply device - Google Patents

Constant current supply device

Info

Publication number
JPS57100517A
JPS57100517A JP17682180A JP17682180A JPS57100517A JP S57100517 A JPS57100517 A JP S57100517A JP 17682180 A JP17682180 A JP 17682180A JP 17682180 A JP17682180 A JP 17682180A JP S57100517 A JPS57100517 A JP S57100517A
Authority
JP
Japan
Prior art keywords
resistance
terminal
amplifier
input terminal
constant 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.)
Pending
Application number
JP17682180A
Other languages
Japanese (ja)
Inventor
Shuji Kitaoka
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 JP17682180A priority Critical patent/JPS57100517A/en
Publication of JPS57100517A publication Critical patent/JPS57100517A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/575—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices characterised by the feedback circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

PURPOSE:To realize the discharging and sucking of a fixed potential, by selecting the resistance value connected to each terminal of an OP amplifier so that the selected value is identical with a prescribed level of the output current at an output terminal of the constant current. CONSTITUTION:A programmable digital input 9 is converted into a programmable reference voltage Vi source by a digital-analog converter 8. An end of the Vi source is earthed, and the other end is connected to an inverse input terminal of an OP amplifier 5 via a low resistance 1. A resistance 2 is connected between the reverse input terminal and output terminal of the amplifier 5; and a current detecting resistance 6 is connected between the output terminal 7. At the same time, a resistance 3 is connected between the terminal 7 and the noninverse input terminal of the amplifier 5, and a resistance 4 is connected between the nonreverse input terminal and the earth respectively.
JP17682180A 1980-12-15 1980-12-15 Constant current supply device Pending JPS57100517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17682180A JPS57100517A (en) 1980-12-15 1980-12-15 Constant current supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17682180A JPS57100517A (en) 1980-12-15 1980-12-15 Constant current supply device

Publications (1)

Publication Number Publication Date
JPS57100517A true JPS57100517A (en) 1982-06-22

Family

ID=16020426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17682180A Pending JPS57100517A (en) 1980-12-15 1980-12-15 Constant current supply device

Country Status (1)

Country Link
JP (1) JPS57100517A (en)

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