JPS56103766A - Integrating circuit - Google Patents

Integrating circuit

Info

Publication number
JPS56103766A
JPS56103766A JP491080A JP491080A JPS56103766A JP S56103766 A JPS56103766 A JP S56103766A JP 491080 A JP491080 A JP 491080A JP 491080 A JP491080 A JP 491080A JP S56103766 A JPS56103766 A JP S56103766A
Authority
JP
Japan
Prior art keywords
capacitor
resistance
loss component
input terminal
output terminal
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
JP491080A
Other languages
Japanese (ja)
Inventor
Norio Akamatsu
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP491080A priority Critical patent/JPS56103766A/en
Publication of JPS56103766A publication Critical patent/JPS56103766A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals
    • G06G7/184—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements
    • G06G7/186—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using capacitive elements using an operational amplifier comprising a capacitor or a resistor in the feedback loop

Abstract

PURPOSE:To enable the integration operation much closer to ideal to be obtained by equivalently decreasing or negating the loss component of an integrating capacitor by positive feedback. CONSTITUTION:In an integrated circuit 2 a resistance Ri is connected to its input terminal which is of antiphase with respect to the output terminal of an amplifier 1, and an integrating capacitor C is connected to said input terminal and the output terminal. A resistance Rb for positive feedback is connected between the output terminal and the input terminal of the in-phase and said input terminal is grounded with the resistance Ra. Optimum feedback amount is determined by the loss component of the capacitor C and the magnitude of the resistance Ri. When the loss component of the capacitor C is small, the feedback amount is increased and when the loss of the capacitor C is small, the positive needback amount is decreased. If, with this circuit configuration, RiRb=RaR (R is the loss component of the capacitor C) is satisfied, the circuit 2 makes the integrating operation close to ideal, but even if this condition is not perfectly satisfied, the loss component of the capacitor C is decreased or negated by positive feedback.
JP491080A 1980-01-18 1980-01-18 Integrating circuit Pending JPS56103766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP491080A JPS56103766A (en) 1980-01-18 1980-01-18 Integrating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP491080A JPS56103766A (en) 1980-01-18 1980-01-18 Integrating circuit

Publications (1)

Publication Number Publication Date
JPS56103766A true JPS56103766A (en) 1981-08-19

Family

ID=11596788

Family Applications (1)

Application Number Title Priority Date Filing Date
JP491080A Pending JPS56103766A (en) 1980-01-18 1980-01-18 Integrating circuit

Country Status (1)

Country Link
JP (1) JPS56103766A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01106962U (en) * 1988-01-12 1989-07-19
WO1990000836A1 (en) * 1988-07-13 1990-01-25 Analog Devices, Inc. Delta modulator with integrator having positive feedback

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01106962U (en) * 1988-01-12 1989-07-19
JPH0525003Y2 (en) * 1988-01-12 1993-06-24
WO1990000836A1 (en) * 1988-07-13 1990-01-25 Analog Devices, Inc. Delta modulator with integrator having positive feedback
US4926178A (en) * 1988-07-13 1990-05-15 Analog Devices, Inc. Delta modulator with integrator having positive feedback

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