JPS56137162A - Synchronizing detection circuit for noncontact type potentiometer - Google Patents

Synchronizing detection circuit for noncontact type potentiometer

Info

Publication number
JPS56137162A
JPS56137162A JP3896680A JP3896680A JPS56137162A JP S56137162 A JPS56137162 A JP S56137162A JP 3896680 A JP3896680 A JP 3896680A JP 3896680 A JP3896680 A JP 3896680A JP S56137162 A JPS56137162 A JP S56137162A
Authority
JP
Japan
Prior art keywords
voltage
phase
potential
electric field
response
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
JP3896680A
Other languages
Japanese (ja)
Inventor
Minoru Aoki
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP3896680A priority Critical patent/JPS56137162A/en
Publication of JPS56137162A publication Critical patent/JPS56137162A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/24—Arrangements for measuring quantities of charge

Abstract

PURPOSE:To increase the response speed of potentiometer, by substantially decreasing the period of electric field variance, through a given amount of phase shift of AC voltage corresponding to the potential from a noncontact probe and through synchronizing detection of the AC voltages of a plurality in phase shift. CONSTITUTION:The electric field in response to the potential of the object to be measured 1 is changed with a rotary sector, and the AC voltage in response to the potential is generated from the noncontacting probe 2 providing the electrode converting the current of electric flux into the AC voltage. This voltage is the AC voltage in phase-shift of 90 deg., 180 deg. and 270 deg. with the phase shifter 6 phase shifting the output of the phase shifters 5 and 4 consisting of a capacitor C1 and operational amplifier OP2. Further, the peak value of the AC voltage is detected with the analog switch 7, capacitor C2 and operational amplifier OP4 providing switches S1- S4 switched with the gate pulse generating circuit 8 for synchronizing detection. With this constitution, the period of electric field variance can substantially be decreased without causing increased revolving speed of the rotating sector and noise, allowing to increase the response speed of potentiometer.
JP3896680A 1980-03-28 1980-03-28 Synchronizing detection circuit for noncontact type potentiometer Pending JPS56137162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3896680A JPS56137162A (en) 1980-03-28 1980-03-28 Synchronizing detection circuit for noncontact type potentiometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3896680A JPS56137162A (en) 1980-03-28 1980-03-28 Synchronizing detection circuit for noncontact type potentiometer

Publications (1)

Publication Number Publication Date
JPS56137162A true JPS56137162A (en) 1981-10-26

Family

ID=12539895

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3896680A Pending JPS56137162A (en) 1980-03-28 1980-03-28 Synchronizing detection circuit for noncontact type potentiometer

Country Status (1)

Country Link
JP (1) JPS56137162A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015155801A (en) * 2014-02-19 2015-08-27 オムロン株式会社 Voltage measurement device and voltage measurement method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015155801A (en) * 2014-02-19 2015-08-27 オムロン株式会社 Voltage measurement device and voltage measurement method
WO2015125761A1 (en) * 2014-02-19 2015-08-27 オムロン株式会社 Voltage measurement device, and voltage measurement method

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