JPS5671314A - Differential amplifying circuit - Google Patents

Differential amplifying circuit

Info

Publication number
JPS5671314A
JPS5671314A JP14840279A JP14840279A JPS5671314A JP S5671314 A JPS5671314 A JP S5671314A JP 14840279 A JP14840279 A JP 14840279A JP 14840279 A JP14840279 A JP 14840279A JP S5671314 A JPS5671314 A JP S5671314A
Authority
JP
Japan
Prior art keywords
voltage
increased
operational amplifier
input
circuit
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
JP14840279A
Other languages
Japanese (ja)
Inventor
Isamu Okuda
Hiroshi Horii
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14840279A priority Critical patent/JPS5671314A/en
Publication of JPS5671314A publication Critical patent/JPS5671314A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To increase the productivity and to improve the accuracy, by constituting the circuit with a DC power supply, voltage set circuit, operational amplifier and feedback element. CONSTITUTION:When an input voltage Vn is greater than a value, the output voltage Vo of an operational amplifier 5 is increased, and the voltage V2 at the connection point between fixed resistors RB and RC of a voltage set circuit 2 is increased with the operation of a fixed resistor RF accompanied with it. When the voltage V2 is increased, the voltages V1, V2 across a variable resistor 3 are accordingly increased and then a set voltage Vi input to the operational amplifier 5 is also increased. Thus, when the set voltage Vi is equal to the input voltage Vn from a signal source 4, the output voltage Vo is neither high nor low, but it is stable at the state.
JP14840279A 1979-11-15 1979-11-15 Differential amplifying circuit Pending JPS5671314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14840279A JPS5671314A (en) 1979-11-15 1979-11-15 Differential amplifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14840279A JPS5671314A (en) 1979-11-15 1979-11-15 Differential amplifying circuit

Publications (1)

Publication Number Publication Date
JPS5671314A true JPS5671314A (en) 1981-06-13

Family

ID=15451973

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14840279A Pending JPS5671314A (en) 1979-11-15 1979-11-15 Differential amplifying circuit

Country Status (1)

Country Link
JP (1) JPS5671314A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6061818U (en) * 1983-09-30 1985-04-30 三洋電機株式会社 amplifier circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6061818U (en) * 1983-09-30 1985-04-30 三洋電機株式会社 amplifier circuit

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