CN2831156Y - 4 end-on standard capacitor - Google Patents
4 end-on standard capacitor Download PDFInfo
- Publication number
- CN2831156Y CN2831156Y CN 200520129662 CN200520129662U CN2831156Y CN 2831156 Y CN2831156 Y CN 2831156Y CN 200520129662 CN200520129662 CN 200520129662 CN 200520129662 U CN200520129662 U CN 200520129662U CN 2831156 Y CN2831156 Y CN 2831156Y
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- CN
- China
- Prior art keywords
- bnc connector
- utility
- standard capacitor
- model
- connector lugs
- 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.)
- Expired - Fee Related
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model relates to a four end-on standard capacitor which is one of the chief standard capacitors for calibrating LCR meters and belongs to technical field of measurement. The utility model comprises a precise standard capacitor and four BNC connector lugs, wherein the precise standard capacitor is welded on the BNC connector lugs; the BNC connector lugs are connected by metal wires, and the lower ends of the BNC connector lugs are connected with a casing. The utility model adopts measuring connecting terminals in a four end-on structure. The connecting method is combined with the advantages of a four-end method in low-impedance measurement (eliminating the influence of lead impedance). Simultaneously, the utility model provides screens (decreasing interference and by-pass current) required by improving the high-impedance measurement, decreases the distributing parameters of measuring lines, and reduces the influence of mutual inductance coupling between voltage circuits and current circuits, so that the frequency characteristics of the four end-on standard capacitor are improved.
Description
Technical field
The utility model relates to a kind of four ends to standard capacitor, is one of main standard device of calibration LCR table, belongs to field of measuring techniques.
Background technology
Four ends are one of main standard device of calibrating LCR table to standard capacitor, are mainly used in the capacitance measurement accuracy of calibrating LCR table in range ability, therefore, require standard capacitor accuracy height, little, the good stability of temperature coefficient.The quality of its performance directly has influence on the accuracy and the reliability of LCR table verification result; Because what calibrating LCR table capacitance measurement accuracy was used more is capacitive, for the calibrating that the LCR that adapts to four end butt junction forms shows, in use often need three-terminal p-n-p-n switch to change four ends into to measuring, this introduces transformed error often, even has influence on the calibrating of LCR table.
The utility model content
The purpose of this utility model provides a kind of four end butt junction forms, frequency characteristic is good, stable and reliable for performance, satisfies the standard capacitor of the needs of four end butt junction form LCR table measurement verification/calibration.
The technical solution of the utility model is: a kind of four ends are to standard capacitor, comprise a precise standard capacitors and four BNC connector lugs, precise standard capacitors is welded on the BNC connector lug, connects with metal wire between the BNC connector lug, and the low side of BNC connector lug links to each other with casing.
The utility model has adopted the measurement link of four ends to structure, the advantage of four end methods (having eliminated the lead impedance influence) in the low-impedance measurement has been made up in this method of attachment, provide simultaneously and improved the required shielding of high impedance measurement (reduce and disturb and by-pass current), reduce the mutual inductance coupling influence between the distribution parameter of slotted line and voltage, the current return, thereby improved the frequency characteristic of four ends standard capacitor.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is the utility model mechanical construction drawing.
Among the figure: 1. precision capacitor, 2. four ends are to the standard capacitor casing, 3.BNC connector lug, 4. metal wire.
The C-capacitor
H
CURThe measurement electric current is high-end; L
CURMeasure the electric current low side; H
POTMeasuring voltage is high-end; L
POTThe measuring voltage low side.
Embodiment
As shown in Figure 2, the utility model comprises a precision capacitor 1 and four BNC connector lugs 3, and precision capacitor 1 is welded on the BNC connector lug 3, connect with metal wire 4 between the BNC connector lug, and the low side of BNC connector lug links to each other with casing 2.
The technical indicator that present embodiment reaches:
1. capacitance swing: 10nF, 100nF, 1 μ F, 10 μ F, 100 μ F.
2. the permissible error limit: ± 0.2%～± 0.05% (under (20 ± 2) ℃ condition)
3. test frequency: capacitance swing: 10nF～1 μ F, 1000Hz
Capacitance swing: 1 μ F～100 μ F, 100Hz.
Claims (1)
1, a kind of four ends is characterized in that comprising a precise standard capacitors and four BNC connector lugs to standard capacitor, and precise standard capacitors is welded on the BNC connector lug, connect with metal wire between the BNC connector lug, and the low side of BNC connector lug links to each other with casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520129662 CN2831156Y (en) | 2005-10-27 | 2005-10-27 | 4 end-on standard capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520129662 CN2831156Y (en) | 2005-10-27 | 2005-10-27 | 4 end-on standard capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2831156Y true CN2831156Y (en) | 2006-10-25 |
Family
ID=37136085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520129662 Expired - Fee Related CN2831156Y (en) | 2005-10-27 | 2005-10-27 | 4 end-on standard capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2831156Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012055358A1 (en) * | 2010-10-27 | 2012-05-03 | Li Guiying | Standard capacitance box output device |
| CN103604959A (en) * | 2013-12-10 | 2014-02-26 | 成都开谱电子科技有限公司 | Standard inductance box |
| CN103675374A (en) * | 2013-12-27 | 2014-03-26 | 成都开谱电子科技有限公司 | Standard inductance box |
| CN104377034A (en) * | 2014-11-28 | 2015-02-25 | 金攀 | Novel capacitor |
| CN106226720A (en) * | 2016-08-31 | 2016-12-14 | 广州赛宝计量检测中心服务有限公司 | Four ends of a kind of accurate high q-factor are to high-frequency inductor standard |
-
2005
- 2005-10-27 CN CN 200520129662 patent/CN2831156Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012055358A1 (en) * | 2010-10-27 | 2012-05-03 | Li Guiying | Standard capacitance box output device |
| US9208944B2 (en) | 2010-10-27 | 2015-12-08 | Guiying Li | Standard capacitance box output device |
| CN103604959A (en) * | 2013-12-10 | 2014-02-26 | 成都开谱电子科技有限公司 | Standard inductance box |
| CN103604959B (en) * | 2013-12-10 | 2016-08-24 | 成都开谱电子科技有限公司 | Standard inductance box |
| CN103675374A (en) * | 2013-12-27 | 2014-03-26 | 成都开谱电子科技有限公司 | Standard inductance box |
| CN103675374B (en) * | 2013-12-27 | 2016-06-08 | 成都开谱电子科技有限公司 | Standard inductance box |
| CN104377034A (en) * | 2014-11-28 | 2015-02-25 | 金攀 | Novel capacitor |
| CN104377034B (en) * | 2014-11-28 | 2017-05-24 | 成都开谱电子科技有限公司 | Capacitor |
| CN106226720A (en) * | 2016-08-31 | 2016-12-14 | 广州赛宝计量检测中心服务有限公司 | Four ends of a kind of accurate high q-factor are to high-frequency inductor standard |
| CN106226720B (en) * | 2016-08-31 | 2022-12-16 | 广州赛宝计量检测中心服务有限公司 | Four-terminal pair high-frequency inductance standard device with precise high Q value |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061025 Termination date: 20121027 |