JPS56124060A - Surfacial electrometer - Google Patents

Surfacial electrometer

Info

Publication number
JPS56124060A
JPS56124060A JP1258481A JP1258481A JPS56124060A JP S56124060 A JPS56124060 A JP S56124060A JP 1258481 A JP1258481 A JP 1258481A JP 1258481 A JP1258481 A JP 1258481A JP S56124060 A JPS56124060 A JP S56124060A
Authority
JP
Japan
Prior art keywords
detection electrode
vibrator
charged object
surfacial
constitution
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.)
Granted
Application number
JP1258481A
Other languages
Japanese (ja)
Other versions
JPS5847672B2 (en
Inventor
Yasuo Nihei
Takuya Hosoda
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.)
Ando Electric Co Ltd
Original Assignee
Ando 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 Ando Electric Co Ltd filed Critical Ando Electric Co Ltd
Priority to JP1258481A priority Critical patent/JPS5847672B2/en
Publication of JPS56124060A publication Critical patent/JPS56124060A/en
Publication of JPS5847672B2 publication Critical patent/JPS5847672B2/en
Expired 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To arrange so that a surfacial electrical potential may be measured with a simple constitution, by fixing a detection electrode and oscillating a vibrator such as tuning fork provided near the detection electrode. CONSTITUTION:A vibrator 4 is constituted with a conductor and earthed. For instance, a tuning fork is used as a vibrator. Vibration pieces 4a and 4b of the vibrator 4 are arranged opposed to each other as if they hold the sides of a detection electrode 2 facing a charged object 1, and in addition, are arranged in parallel with a line connecting the charged object 1 with the detection electrode 2. If the vibration pieces 4a, 4b are caused to vibrate through the operation to bring them close to or remote from the detection electrode 2, an electrostatic capacity C1 between the charged object 1 and the detection electrode 2 and at the same time, an electrostatic capacity C2, C3 each between the detection electrode a and the vibration pieces 4a, 4b increases or decreases. Then an alternate current signal proportional to the surfacial electric potential V5 of the charged object 1 is obtained on the detection electrode 2. Consequently, under this constitution, it is possible to simplify the structure and reduce the cost involved.
JP1258481A 1981-01-30 1981-01-30 surface electrometer Expired JPS5847672B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1258481A JPS5847672B2 (en) 1981-01-30 1981-01-30 surface electrometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1258481A JPS5847672B2 (en) 1981-01-30 1981-01-30 surface electrometer

Publications (2)

Publication Number Publication Date
JPS56124060A true JPS56124060A (en) 1981-09-29
JPS5847672B2 JPS5847672B2 (en) 1983-10-24

Family

ID=11809396

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1258481A Expired JPS5847672B2 (en) 1981-01-30 1981-01-30 surface electrometer

Country Status (1)

Country Link
JP (1) JPS5847672B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818945A (en) * 1986-04-22 1989-04-04 Voyager Technologies, Inc. Non contacting volt meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818945A (en) * 1986-04-22 1989-04-04 Voyager Technologies, Inc. Non contacting volt meter

Also Published As

Publication number Publication date
JPS5847672B2 (en) 1983-10-24

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