JPH0388172U - - Google Patents
Info
- Publication number
- JPH0388172U JPH0388172U JP14977889U JP14977889U JPH0388172U JP H0388172 U JPH0388172 U JP H0388172U JP 14977889 U JP14977889 U JP 14977889U JP 14977889 U JP14977889 U JP 14977889U JP H0388172 U JPH0388172 U JP H0388172U
- Authority
- JP
- Japan
- Prior art keywords
- measuring device
- measured
- electric force
- potential
- potential measuring
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Control Or Security For Electrophotography (AREA)
Description
第１図はａ，ｂは本考案の第１の実施例のセン
サ部の平面断面図および側面断面図、第２図は本
考案の第２の実施例の構成図、第３図は第１の実
施例を含む第２の実施例の回路図、第４図ａ，ｂ
は従来の表面電位測定装置のセンサ部の平面断面
図および側面断面図である。
１，１Ａ……音叉振動子、２……圧電セラミツ
ク、３，３Ａ……ケース、４，５，４Ｃ……検出
電極、６……電気力線、７Ａ，７Ｂ，７Ｃ……検
出孔、８Ａ，８Ｂ，８Ｃ……チヨツパ部、９……
基板、１０……駆動用端子、１１Ａ，１１Ｂ，１
１Ｃ……出力端子、１２……接地端子、１３……
表面電位測定装置の本体、１４……センサ部、１
５……表面部、１６……接続端子、１７……ケー
ブル、１８……プローブ、４１，５１，４１Ａ，
５１Ａ……プリンアンプ、４２，５２……ＡＣア
ンプ、４３，５３……ＤＣアンプ、４４……音叉
駆動回路、４５……演算回路、４６……スイツチ
部。
1A and 1B are plan sectional views and side sectional views of the sensor section of the first embodiment of the present invention, FIG. 2 is a configuration diagram of the second embodiment of the present invention, and FIG. Circuit diagram of the second embodiment, including the embodiment of FIG. 4a, b
1 is a plan sectional view and a side sectional view of a sensor section of a conventional surface potential measuring device. 1, 1A... Tuning fork vibrator, 2... Piezoelectric ceramic, 3, 3A... Case, 4, 5, 4C... Detection electrode, 6... Electric force line, 7A, 7B, 7C... Detection hole, 8A , 8B, 8C...Chiyotupa part, 9...
Board, 10... Drive terminal, 11A, 11B, 1
1C... Output terminal, 12... Ground terminal, 13...
Main body of surface potential measuring device, 14...sensor section, 1
5... Surface portion, 16... Connection terminal, 17... Cable, 18... Probe, 41, 51, 41A,
51A...Print amplifier, 42, 52...AC amplifier, 43, 53...DC amplifier, 44...tuning fork drive circuit, 45...arithmetic circuit, 46...switch unit.
Claims (1)
定物からの距離が異なる位置で入射される検出孔
を有するケースと、前記検出孔から入射されるそ
れぞれの電気力線を所定の周波数で変化させるチ
ヨツパ部と、前記チヨツパ部を通過したそれぞれ
の電気力線を検出して前記信号に変換する検出電
極とを有する電位センサ部を備えたことを特徴と
する表面電位測定装置。 ２ 前記電位センサ部が電位測定装置本体に着脱
できるケーブルにより接続されたプローブ内に取
り付けられ、前記電位測定装置本体の切替えスイ
ツチによりプローブ側でも測定できることを特徴
とする請求項１記載の表面電位測定装置。[Claims for Utility Model Registration] 1. A case having a detection hole through which the lines of electric force of the object to be measured are incident at positions at different distances from at least two objects to be measured; It is characterized by comprising a potential sensor section having a chopper section that changes the lines of electric force at a predetermined frequency, and a detection electrode that detects each line of electric force passing through the chopper section and converts it into the signal. Surface potential measuring device. 2. The surface potential measurement according to claim 1, wherein the potential sensor section is attached to a probe connected to the potential measuring device main body by a detachable cable, and can also be measured on the probe side by a changeover switch of the potential measuring device main body. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14977889U JPH0388172U (en) | 1989-12-25 | 1989-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14977889U JPH0388172U (en) | 1989-12-25 | 1989-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0388172U true JPH0388172U (en) | 1991-09-09 |
Family
ID=31696154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14977889U Pending JPH0388172U (en) | 1989-12-25 | 1989-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0388172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006153631A (en) * | 2004-11-29 | 2006-06-15 | Hokuto Denshi Kogyo Kk | Surface potential measuring method and surface potential meter |
-
1989
- 1989-12-25 JP JP14977889U patent/JPH0388172U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006153631A (en) * | 2004-11-29 | 2006-06-15 | Hokuto Denshi Kogyo Kk | Surface potential measuring method and surface potential meter |
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