JPS5798144A - Detection system for electrostatic sensing voltage - Google Patents

Detection system for electrostatic sensing voltage

Info

Publication number
JPS5798144A
JPS5798144A JP17355580A JP17355580A JPS5798144A JP S5798144 A JPS5798144 A JP S5798144A JP 17355580 A JP17355580 A JP 17355580A JP 17355580 A JP17355580 A JP 17355580A JP S5798144 A JPS5798144 A JP S5798144A
Authority
JP
Japan
Prior art keywords
sensing voltage
electrostatic sensing
electrostatic
varactor diode
capacity
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
JP17355580A
Other languages
Japanese (ja)
Inventor
Kenichi Sawazaki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP17355580A priority Critical patent/JPS5798144A/en
Publication of JPS5798144A publication Critical patent/JPS5798144A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
    • G11B9/08—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using electrostatic charge injection; Record carriers therefor

Landscapes

  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE:To detect an electrostatic sensing voltage by a means of detecting an electrostatic sensing voltage due to static charge as variation in electrostatic capacity and then detecting the resonance frequency of a resonating circuit varying with the said variation in capacity. CONSTITUTION:An electrostatic sensing voltage due to static charge 3 injected into an insulator film 1, having a charge accumulating function, according to an information signal is led out by an electrode 4 as a reproducing head. The electrostatic sensing voltage led out by this electrode 4 is applied to, for example, the cathode side of a varactor diode 5 as a voltage variable capacity element by being superposed upon a bias voltage applied from a DC power source 6 through a resistance 7. The anode side of the varactor diode 5 is connected to an oscillator 9 through the primary side of a resonance transformer 8, and the varactor diode 5 forms a resonating circuit 10 together with the resonance transformer 8. Its output is detected by a peak detection type circuit 14 consisting of a diode 11, a capacitor 12 and a resistance 13 to generate a detection output 15.
JP17355580A 1980-12-09 1980-12-09 Detection system for electrostatic sensing voltage Pending JPS5798144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17355580A JPS5798144A (en) 1980-12-09 1980-12-09 Detection system for electrostatic sensing voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17355580A JPS5798144A (en) 1980-12-09 1980-12-09 Detection system for electrostatic sensing voltage

Publications (1)

Publication Number Publication Date
JPS5798144A true JPS5798144A (en) 1982-06-18

Family

ID=15962708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17355580A Pending JPS5798144A (en) 1980-12-09 1980-12-09 Detection system for electrostatic sensing voltage

Country Status (1)

Country Link
JP (1) JPS5798144A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112505436A (en) * 2020-11-20 2021-03-16 石家庄铁道大学 Non-contact electrostatic field testing device and testing method
WO2025231925A1 (en) * 2024-05-07 2025-11-13 北京康蓉科技有限公司 Wearable human body electrostatic voltage and resistance testing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112505436A (en) * 2020-11-20 2021-03-16 石家庄铁道大学 Non-contact electrostatic field testing device and testing method
WO2025231925A1 (en) * 2024-05-07 2025-11-13 北京康蓉科技有限公司 Wearable human body electrostatic voltage and resistance testing system

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