JPS56120959A - Potential sensor - Google Patents

Potential sensor

Info

Publication number
JPS56120959A
JPS56120959A JP2481180A JP2481180A JPS56120959A JP S56120959 A JPS56120959 A JP S56120959A JP 2481180 A JP2481180 A JP 2481180A JP 2481180 A JP2481180 A JP 2481180A JP S56120959 A JPS56120959 A JP S56120959A
Authority
JP
Japan
Prior art keywords
case
electrode
power line
electric power
chopper
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
JP2481180A
Other languages
Japanese (ja)
Inventor
Hiroaki Yamada
Takayuki Kawana
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2481180A priority Critical patent/JPS56120959A/en
Publication of JPS56120959A publication Critical patent/JPS56120959A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE:To obtain a device inexpensive and light in weight by providing a chopper for conversion to an alternating electric power line and an electrode for measuring the potential within a plastic case which has a hole allowing the entrance of an electric power line from a substance to be measured and whose surface is plated with metal. CONSTITUTION:Metal plating is applied to the plastic case 6 having a hole and the chopper 3 and the electrode 4 are provided in the case. The electric power line 5 emitted from the substance 1 to be measured passes through the hole of the case 6 and is converted into the alternating electric power line by the chopper 3, and the potential is measured by the electrode 4. Even when the part of plastic of the plastic case 6 has an electric charge, the potential inside the electrode 4 receives no influence therefrom since the case 6 is covered with a metal film. By this constitution, the device can be made inexpensive and light in weight.
JP2481180A 1980-02-28 1980-02-28 Potential sensor Pending JPS56120959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2481180A JPS56120959A (en) 1980-02-28 1980-02-28 Potential sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2481180A JPS56120959A (en) 1980-02-28 1980-02-28 Potential sensor

Publications (1)

Publication Number Publication Date
JPS56120959A true JPS56120959A (en) 1981-09-22

Family

ID=12148569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2481180A Pending JPS56120959A (en) 1980-02-28 1980-02-28 Potential sensor

Country Status (1)

Country Link
JP (1) JPS56120959A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522609B2 (en) * 1972-12-22 1980-06-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522609B2 (en) * 1972-12-22 1980-06-18

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