JPS6416113A - Voltage/current converting circuit - Google Patents

Voltage/current converting circuit

Info

Publication number
JPS6416113A
JPS6416113A JP62171017A JP17101787A JPS6416113A JP S6416113 A JPS6416113 A JP S6416113A JP 62171017 A JP62171017 A JP 62171017A JP 17101787 A JP17101787 A JP 17101787A JP S6416113 A JPS6416113 A JP S6416113A
Authority
JP
Japan
Prior art keywords
voltage
current
resistance
input terminal
control amplifier
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
JP62171017A
Other languages
Japanese (ja)
Inventor
Kunio Seki
Hirobumi Ishii
Shinji Yamada
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 Microcomputer System Ltd
Hitachi Ltd
Original Assignee
Hitachi Ltd
Hitachi Microcomputer Engineering 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, Hitachi Microcomputer Engineering Ltd filed Critical Hitachi Ltd
Priority to JP62171017A priority Critical patent/JPS6416113A/en
Publication of JPS6416113A publication Critical patent/JPS6416113A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)
  • Networks Using Active Elements (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

PURPOSE:To simplify the circuit constitution to make it suitable for IC by connecting an inductive load and a current detecting resistance in series between the output side of a control amplifier and the ground and generating voltage drop corresponding to a driving current by the current detecting resistance and negatively feeding back this voltage drop to a second input terminal through a negative feedback circuit consisting of a resistance. CONSTITUTION:A control signal Vctl is a voltage signal and is supplied to the inverted input terminal of a control amplifier 1 through an input resistance R1. A reference voltage Vref is divided to a voltage V1 by voltage dividing resistances R2 and R4 and is supplied to the non-inverted input terminal of the control amplifier 1. An inductive load Rl and a current detecting resistance Rs are provided on the output side of the control amplifier 1, and the load Rl is driven by an output current Io. Voltage drop Vs determined by Io.Rs is generated in one end of a current detecting resistance R1. Its voltage level corresponds to the current quantity of the driving current Io. The voltage Vs is negatively fed back to th non-inverted input terminal through a resistance R3 as the negative feedback circuit. Thus, the inductive load Rl is driven by the output signal resulting from comparison and amplification between the reference voltage and the control signal, namely, the output current.
JP62171017A 1987-07-10 1987-07-10 Voltage/current converting circuit Pending JPS6416113A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62171017A JPS6416113A (en) 1987-07-10 1987-07-10 Voltage/current converting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62171017A JPS6416113A (en) 1987-07-10 1987-07-10 Voltage/current converting circuit

Publications (1)

Publication Number Publication Date
JPS6416113A true JPS6416113A (en) 1989-01-19

Family

ID=15915550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62171017A Pending JPS6416113A (en) 1987-07-10 1987-07-10 Voltage/current converting circuit

Country Status (1)

Country Link
JP (1) JPS6416113A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0313513U (en) * 1989-06-22 1991-02-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0313513U (en) * 1989-06-22 1991-02-12

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