JPS5554455A - Surface electrometer available for system selection - Google Patents
Surface electrometer available for system selectionInfo
- Publication number
- JPS5554455A JPS5554455A JP9254178A JP9254178A JPS5554455A JP S5554455 A JPS5554455 A JP S5554455A JP 9254178 A JP9254178 A JP 9254178A JP 9254178 A JP9254178 A JP 9254178A JP S5554455 A JPS5554455 A JP S5554455A
- Authority
- JP
- Japan
- Prior art keywords
- surface electrometer
- current
- detection electrode
- electrometer
- alternating
- 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
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
PURPOSE: To make it possible to select easily a system fit for a use, and also to eliminate the need to move a probe by forming a direct-current surface electrometer and alternating-current surface electrometer in one for a combinational use by one surface electrometer.
CONSTITUTION: For a use as a direct-current surface electrometer, common contact C of switch S1 is connected to side (a) and switches S2 and S3 are both OFF. As a result, shield gate 1 is electrically insulated from detection electrode 2, which can detect surface potential V0 of body 16 to be measured. For a use as an alternating-current surface electrometer, on the other hand, common contact (c) of switch S1 is connected to side (b) and switches S2 and S3 are both ON to make an electric connection between detection electrode 2 and shield case 1, and consequently electrode 6 is driven to vary an electric field immersing through aperture 4, so that a conduction current equivalent to its flux current will be inputted from detection electrode 5 to pre-amplifier 14.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9254178A JPS5554455A (en) | 1978-07-31 | 1978-07-31 | Surface electrometer available for system selection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9254178A JPS5554455A (en) | 1978-07-31 | 1978-07-31 | Surface electrometer available for system selection |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5554455A true JPS5554455A (en) | 1980-04-21 |
Family
ID=14057231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9254178A Pending JPS5554455A (en) | 1978-07-31 | 1978-07-31 | Surface electrometer available for system selection |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5554455A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018205032A (en) * | 2017-05-31 | 2018-12-27 | シシド静電気株式会社 | Electrified plate monitor device |
-
1978
- 1978-07-31 JP JP9254178A patent/JPS5554455A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018205032A (en) * | 2017-05-31 | 2018-12-27 | シシド静電気株式会社 | Electrified plate monitor device |
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