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JPS5492046A - Frequency-voltage converter - Google Patents

Frequency-voltage converter

Info

Publication number
JPS5492046A
JPS5492046A JP15810377A JP15810377A JPS5492046A JP S5492046 A JPS5492046 A JP S5492046A JP 15810377 A JP15810377 A JP 15810377A JP 15810377 A JP15810377 A JP 15810377A JP S5492046 A JPS5492046 A JP S5492046A
Authority
JP
Japan
Prior art keywords
frequency
amplifier
signal
voltage
asw11
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
JP15810377A
Other languages
Japanese (ja)
Inventor
Noriaki Hino
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP15810377A priority Critical patent/JPS5492046A/en
Publication of JPS5492046A publication Critical patent/JPS5492046A/en
Pending legal-status Critical Current

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  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE: To provide high accuracy and excellent linearity with a simple constitution by converting the frequency signal into the voltage signal by charging and discharging the capacitor by utilizing a vertual contact point of operational amplifier.
CONSTITUTION: Provide a time constant circuit consisting of capacitor C15 and resister 16, charge C15 from the standard voltage Vref toward virtual contact point G of operational amplifier 17 by means of analogous switch ASW11 and 12. Then, synchronize ASW11, 12 and 13, 14 with the frequency signal, control the opening and closing in the antiphase, feed back-connect the parallel circuit of feedback resister 20 and smoothing C19 to amplifier 17 and output the signal which has been frequency-voltage connected by amplifier 17.
COPYRIGHT: (C)1979,JPO&Japio
JP15810377A 1977-12-29 1977-12-29 Frequency-voltage converter Pending JPS5492046A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15810377A JPS5492046A (en) 1977-12-29 1977-12-29 Frequency-voltage converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15810377A JPS5492046A (en) 1977-12-29 1977-12-29 Frequency-voltage converter

Publications (1)

Publication Number Publication Date
JPS5492046A true JPS5492046A (en) 1979-07-20

Family

ID=15664361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15810377A Pending JPS5492046A (en) 1977-12-29 1977-12-29 Frequency-voltage converter

Country Status (1)

Country Link
JP (1) JPS5492046A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020065146A (en) * 2001-02-06 2002-08-13 엘지이노텍 주식회사 Circuit to calculate logic value for analogue signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020065146A (en) * 2001-02-06 2002-08-13 엘지이노텍 주식회사 Circuit to calculate logic value for analogue signal

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