JPS58153371U - Switch for capacitance measurement - Google Patents

Switch for capacitance measurement

Info

Publication number
JPS58153371U
JPS58153371U JP4855982U JP4855982U JPS58153371U JP S58153371 U JPS58153371 U JP S58153371U JP 4855982 U JP4855982 U JP 4855982U JP 4855982 U JP4855982 U JP 4855982U JP S58153371 U JPS58153371 U JP S58153371U
Authority
JP
Japan
Prior art keywords
measurement
voltage
switch
capacitance measurement
measured
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
JP4855982U
Other languages
Japanese (ja)
Other versions
JPH0421103Y2 (en
Inventor
光男 新谷
秀夫 大西
Original Assignee
山本電機インスツルメント株式会社
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 山本電機インスツルメント株式会社 filed Critical 山本電機インスツルメント株式会社
Priority to JP4855982U priority Critical patent/JPS58153371U/en
Publication of JPS58153371U publication Critical patent/JPS58153371U/en
Application granted granted Critical
Publication of JPH0421103Y2 publication Critical patent/JPH0421103Y2/ja
Granted legal-status Critical Current

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  • Measurement Of Resistance Or Impedance (AREA)
  • Electronic Switches (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図ａはＮチャンネルＭＯ３−ＦＥＴのシンボル図、
第１図す、　　ｃは第１図ａのオン時、オフ時の等価回
路図、第２図はガード・シールド技法の原理図、第３図
はこの考案の一例を示す回路の原理図、第４図は第３図
の実施例を示す回路図、第５図はこの考案の他側を示す
簡略化した回路図である。 １・・・被測定物、２・・・ケーブル、３・・・交流電
源、・４・・・ＭＯＳ−ＦＥＴ、５・・・スイッチ手段
。Figure 1a is a symbol diagram of an N-channel MO3-FET,
Figures 1 and c are equivalent circuit diagrams of Figure 1a when they are on and off, Figure 2 is a diagram of the principle of the guard shield technique, Figure 3 is a diagram of the principle of a circuit showing an example of this invention, 4 is a circuit diagram showing the embodiment of FIG. 3, and FIG. 5 is a simplified circuit diagram showing the other side of the invention. DESCRIPTION OF SYMBOLS 1... Object to be measured, 2... Cable, 3... AC power supply, 4... MOS-FET, 5... Switch means.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 被測定物と測定用交流電圧間に半導体スイッチング素子
を接続し、被測定物を接続する端子及び測定用交流電圧
を印加する端子以外の半導体スイッチング素子の端子に
測定用交流電圧に基づく電圧を重畳すると共に、半導体
スイッチング素子がオフのとき被測定物を接続する端子
に測定用交流電圧に基づく電圧を加えることを特徴とす
る静電゛容量測定用切換スイッチ。A semiconductor switching element is connected between the object to be measured and the AC voltage for measurement, and a voltage based on the AC voltage for measurement is superimposed on the terminals of the semiconductor switching element other than the terminal to which the object to be measured is connected and the terminal to which the AC voltage for measurement is applied. A changeover switch for capacitance measurement, characterized in that, when the semiconductor switching element is off, a voltage based on a measurement AC voltage is applied to a terminal to which a measured object is connected.
JP4855982U 1982-03-31 1982-03-31 Switch for capacitance measurement Granted JPS58153371U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4855982U JPS58153371U (en) 1982-03-31 1982-03-31 Switch for capacitance measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4855982U JPS58153371U (en) 1982-03-31 1982-03-31 Switch for capacitance measurement

Publications (2)

Publication Number Publication Date
JPS58153371U true JPS58153371U (en) 1983-10-13
JPH0421103Y2 JPH0421103Y2 (en) 1992-05-14

Family

ID=30059468

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4855982U Granted JPS58153371U (en) 1982-03-31 1982-03-31 Switch for capacitance measurement

Country Status (1)

Country Link
JP (1) JPS58153371U (en)

Also Published As

Publication number Publication date
JPH0421103Y2 (en) 1992-05-14

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