CN207817185U - A kind of wide-range standard capacitance box - Google Patents
A kind of wide-range standard capacitance box Download PDFInfo
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- CN207817185U CN207817185U CN201820153543.0U CN201820153543U CN207817185U CN 207817185 U CN207817185 U CN 207817185U CN 201820153543 U CN201820153543 U CN 201820153543U CN 207817185 U CN207817185 U CN 207817185U
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- 239000003990 capacitor Substances 0.000 claims abstract description 53
- 239000002184 metal Substances 0.000 claims description 27
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000000919 ceramic Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims description 3
- 229910052573 porcelain Inorganic materials 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 5
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model is related to measure or calibrate field, more particularly to a kind of etalon transmitting capacitance parameter.A kind of wide-range standard capacitance box, including：36 capacitors in kind being arranged in babinet and the babinet and 4 change-over switches；Capacitive output end is provided on the babinet；The switching mode of the change-over switch is 1,2,5 systems, and is provided with switch input and change-over switch output end；The switch input is connect with the two poles of the earth of the capacitor in kind, and the change-over switch output end is connect with the capacitive output end；The capacitive output end is used to export the capacity of the selected capacitor in kind of the change-over switch.Compared with decimal system standard capacitance box, the utility model realizes the range ability of 1,2,5 system output capacitance 1pF~500mF, considerably increases capacitance range ability, and volume smaller, weight are lighter；Simultaneously by setting open circuit compensation function and short-circuit compensation function, it is convenient for precision measurement.
Description
Technical field
The utility model is related to a kind of metering or calibration field, more particularly to a kind of etalon transmitting capacitance parameter.
Background technology
Field is being measured or is calibrating, standard capacitance box (device) is to ensure the consistent and special of capacitance parameter unit magnitude
Capacitance measurer, it be in AC impedance parameter measurement, as capacitance parameter transmit etalon.
Simultaneously in electronic component field, standard capacitance box (device) can be used as the sensor of standard, in test circuit
Debugging in, accurate capacitance parameter can be transmitted, improve the accuracy of sensor.
In capacitance parameter metering, the standard capacitance box produced both at home and abroad is generally capacitance decade box, widest range
Capacitive is 6 disk capacitance decade boxs, it can be achieved that 1 × 100~1 × 106The capacitance range ability of pF, such as：The μ F of 1pF~1, or
Person 1000pF~1mF shares 60 standard point outputs.But its shortcoming is that range is narrow, volume is big, and weight weight cannot meet
The requirement used, it is also not readily transportable and used to production scene.From developing with from the point of view of demand from now on, existing range is
The amount that capacitance parameter cannot be met passes and calibration requirements, needs to design the lighter standard capacitance of wider range, volume smaller, weight
Case, as range ability is：1pF~500mF is (i.e.：1×10-12~5 × 10-1F)。
Standard capacitance box mainly consists of the following parts：Capacitor part in kind, conversion switch part, capacitive output
Interface section form, existing capacitive be typically all made using capacitor in kind, using decimal system mode, range be from
The μ of 1pF~1 F or 1000pF~1mF.In order to meet the range of capacitance in RLC digital electric bridges, it would be highly desirable to release a kind of wide amount
Journey standard capacitance box.
Utility model content
The purpose of the utility model is to overcome the above-mentioned deficiencies in the presence of the prior art, provide a kind of 1,2,5 systems
Wide-range standard capacitance box, need to only use 4 change-over switches, capacitive range ability can be achieved with 1pF~500mF (i.e.：1
×10-12~5 × 10-1F).Compared with decimal system standard capacitance box, capacitive range ability greatly increases, and capacitive volume is more
Small, weight is lighter.
In order to realize that above-mentioned purpose of utility model, the utility model provide following technical scheme：
A kind of wide-range standard capacitance box, which is characterized in that including：
The capacitance of 36 capacitors in kind, the standard capacitor in the material object capacitor is respectively：1pF、2pF、
5pF、 10pF、20pF、50pF、100pF、200pF、500pF、1nF、2nF、5nF、10nF、20nF、50nF、 100nF、
200nF、500nF、1μF、2μF、5μF、10μF、20μF、50μF、100μF、200μF、500 μF、1mF、2mF、5mF、10mF、
20mF、50mF、100mF、200mF、500mF；
The switching mode of 4 change-over switches, the change-over switch is 1,2,5 systems, and is provided with switch input
With change-over switch output end；The switch input is connect with the two poles of the earth of the capacitor in kind；
Babinet, capacitive output end is provided on the babinet, and the capacitive output end is exported with the change-over switch
End connection, the capacity for exporting the selected capacitor in kind of the change-over switch.
Further, the capacitor in kind, including capacitor metal shielding box and setting are in the capacitor metal screen
Cover the standard capacitor in box；
The high electrode end H and low electrode end L of the standard capacitor are drawn by insulator, respectively with the change-over switch
Input terminal connects, and is welded as shielding end G by metal weld tabs and the capacitor metal shielding box.
Further, the change-over switch be provided with 9 groups described in switch input；Each change-over switch input
End includes an a high electrode input terminal H and low electrode input terminal L；
9 groups of switch inputs of first change-over switch are respectively with capacitance：1pF、2pF、5pF、10pF、
The two poles of the earth of the capacitor in kind of 20pF, 50pF, 100pF, 200pF, 500pF are correspondingly connected with；
9 groups of switch inputs of second change-over switch are respectively with capacitance：1nF、2nF、5nF、10nF、
The two poles of the earth of the capacitor in kind of 20nF, 50nF, 100nF, 200nF, 500nF are correspondingly connected with；
9 groups of switch inputs of third change-over switch are respectively with capacitance：1μF、2μF、5μF、10μF、20
The two poles of the earth of the capacitor in kind of μ F, 50 μ F, 100 μ F, 200 μ F, 500 μ F are correspondingly connected with；
9 groups of switch inputs of 4th change-over switch are respectively with capacitance：1mF、2mF、5mF、10mF、
20mF、50mF、100mF、200mF、500mF。
Further, the change-over switch, including change-over switch metal shielding box and setting are in the change-over switch metal
Ceramic band switch in shielding box；It is additionally provided with metal shielding board in the change-over switch metal shielding box, which is opened
It closes metal shielding box and distinguishes two shielding spaces, while the ceramic band switch being divided into and is located at two shielding spaces
Two parts, which is separately connected high electrode end or the low electrode end of the capacitor in kind.
Further, the ceramic band switch is located at two parts in two shielding spaces and is each provided with multilayer, and two
Respectively have 1 layer in a shielding space to connect with change-over switch output end, separately respectively have 9 layers it is corresponding with the switch input respectively
Connection.
Further, 4 knobs are provided on the wide-range standard capacitance box, which is separately connected 4 conversions and opens
The ceramic band switch of pass, for the break-make by rotating the control ceramic band switch, the capacitance exported with selected needs
Amount.
Further, the angle rotatable of the knob is 300 ° or 360 °.
Further, the capacitive output end is exported using four ends pair or three end BNC.
Further, the change-over switch is additionally provided with open circuit compensation function and short-circuit compensation function；Meanwhile described 4
A corresponding knob increase open circuit gear of change-over switch and short-circuit gear.
Further, the ceramic band switch is located at two parts respectively 1 layer of setting of two shielding spaces, wherein in high electricity
One layer of two tip nodes of pole are respectively the ends OH and the ends SH, are respectively the ends OL and SL in another layer of two tip nodes of low electrode
End, the wherein ends SH are connected to the short-circuit compensation function with the ends SL, and the ends OL and the ends OH are not connected as the open circuit compensation work(
Energy.
In conclusion by adopting the above-described technical solution, the utility model has the beneficial effects that：
1, the capacitive uses 4 change-over switches, using 1,2,5 system modes, realize capacitance swing from 1pF~
The output of 500mF.Existing capacitive uses decimal system mode, and usually used 6 spiral button (or 6 change-over switches), can only
Realize that the output of the μ of 1pF~1 F or 1000pF~1mF, the utility model greatly extend the output area of capacitance.
2, open circuit compensation function and short-circuit compensation function are arranged by the utility model simultaneously in the inside of capacitive, it can be right
(i.e. the input port of RLC digital electric bridges, test connecting line, the interconnector of capacitive and its change-over switch is defeated for whole system
Enter/output port etc.) carry out while compensating, influence of the distributed constant to test data of all factors can be accurately eliminated,
When carrying out precision measurement, accuracy not only easy to use but also that test can be improved, and can ensure test data after compensating every time
Consistency and repeatability.For existing capacitive due to this no function, compensation includes only the input terminal of RLC digital electric bridges
Mouth, test connecting line are done, and the portions such as input/output end port of the interconnector for including capacitive and internal switch
Point, therefore certain error can be brought to test result, especially at high capacitance (Low ESR), influence amount is just clearly.
3, due to using 1,2,5 system standards, reduce the volume and weight of capacitive, both realized wide-range capacitance model
The output enclosed, and be readily transported and used to production scene.
Description of the drawings：
Fig. 1 is the panel figure of the utility model wide-range standard capacitance box；
Fig. 2 is the schematic diagram of the utility model wide-range standard capacitance box；
Fig. 3 is the structure diagram of the utility model wide-range standard capacitance box；
Fig. 4 is the capacitor outline drawing in kind of the utility model wide-range standard capacitance box；
Fig. 5 is the change-over switch schematic diagram of the utility model wide-range standard capacitance box；
Fig. 6 is the change-over switch arrangement figure of the utility model wide-range standard capacitance box.
It is marked in figure：1- material object capacitors, 2- change-over switches, 21- ceramics band switches, 22- change-over switch metallic shields
Box, 23- metal shielding boards, 3- capacitor outputs, 4- switch inputs, 5- change-over switch output ends, 6- capacitor gold
Belong to shielding box.
Specific implementation mode
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.
Referring to Fig. 1-3, a kind of wide-range standard capacitance box, which is characterized in that including：
The capacitance of 36 capacitors 1 in kind, the standard capacitor in the material object capacitor 1 is respectively：1pF、2pF、
5pF、 10pF、20pF、50pF、100pF、200pF、500pF、1nF、2nF、5nF、10nF、20nF、50nF、 100nF、
200nF、500nF、1μF、2μF、5μF、10μF、20μF、50μF、100μF、200μF、500 μF、1mF、2mF、5mF、10mF、
20mF、50mF、100mF、200mF、500mF；That is, the wide-range standard capacitance box uses 1,2,5 systems, its capacitance is realized
Output area is 1pF~500mF.
The switching mode of 4 change-over switches 2, the change-over switch 2 is 1,2,5 systems, and is provided with change-over switch input
End 4 and change-over switch output end 5；The switch input 4 is connect with the two poles of the earth of the capacitor 1 in kind；
Babinet (not shown), is provided with capacitive output end 3 on the babinet, the capacitive output end 3 with described turn
The connection of output switching terminal 5 is changed, the capacity for exporting the selected capacitor 1 in kind of the change-over switch 2.
The capacitive output end 3 is exported using four ends pair or three end BNC.Specifically, the capacitive output end 3, packet
Include capacitive high electrode output end H and capacitive low electrode output end L；The change-over switch output end 5 includes that change-over switch is high
Electrode output and change-over switch low electrode output end；The change-over switch high electrode output end of each change-over switch is in parallel,
It being connect again with the capacitive high electrode output end H, the change-over switch low electrode output end of each change-over switch is in parallel, then
It is connect with the capacitive low electrode output end H；Further, the capacitive high electrode output end H includes high electrode voltage
Output end VHWith high electrode current output terminal IH；The capacitive low electrode output end L includes low electrode voltage output end VLWith
Low electrode current output terminal IL。
Referring to Fig. 4, the material object capacitor 1, including capacitor metal shielding box and setting are in the capacitor metal screen
Cover the standard capacitor in box；
The high electrode end H and low electrode end L of the standard capacitor are drawn by insulator, respectively with the change-over switch
Input terminal connects, and is welded as shielding end G by metal weld tabs and the capacitor metal shielding box 6.
Referring to Fig. 5, Fig. 6, the change-over switch be provided with 9 groups described in switch input；Each change-over switch
Input terminal includes a high electrode input terminal H (H1,H2,…,H9) and a low electrode input terminal L (L1,L2,…,L9)；
9 groups of switch inputs of first change-over switch are respectively with capacitance：1pF、2pF、5pF、10pF、
The two poles of the earth of the capacitor in kind of 20pF, 50pF, 100pF, 200pF, 500pF are correspondingly connected with；
9 groups of switch inputs of second change-over switch are respectively with capacitance：1nF、2nF、5nF、10nF、
The two poles of the earth of the capacitor in kind of 20nF, 50nF, 100nF, 200nF, 500nF are correspondingly connected with；
9 groups of switch inputs of third change-over switch are respectively with capacitance：1μF、2μF、5μF、10μF、20
The two poles of the earth of the capacitor in kind of μ F, 50 μ F, 100 μ F, 200 μ F, 500 μ F are correspondingly connected with；
9 groups of switch inputs of 4th change-over switch are respectively with capacitance：1mF、2mF、5mF、10mF、
20mF、50mF、100mF、200mF、500mF。
The change-over switch 2, including change-over switch metal shielding box 22 and setting are in the change-over switch metal shielding box
Interior ceramic band switch 21；It is additionally provided with metal shielding board 23 in the change-over switch metal shielding box 22, which is opened
It closes metal shielding box 22 and distinguishes two shielding spaces, while the ceramic band switch 21 being divided into and is located at two shieldings
The two parts in space, the two parts are separately connected high electrode end or the low electrode end of the capacitor 1 in kind.
Two parts that the ceramics band switch 21 is located in two shielding spaces are each provided with multilayer (such as：11 layers),
Respectively there is 1 layer to be connect with change-over switch output end in two shielding spaces, separately have 9 layers it is corresponding with the switch input respectively
Connection.It should be appreciated that ceramic 21 every layer of the band switch individually connect only this practicality newly with the switch input 4
One of selection connection type of type can be multigroup described with every layer of connection also for more preferably the utility model embodiment is illustrated
Switch input 4, be those skilled in the art can it is according to the present utility model enlightenment it is readily comprehensible.
4 knobs are provided on the wide-range standard capacitance box, which is separately connected the ceramics of 4 change-over switches 2
Band switch 21, the break-make for controlling the ceramic band switch 21 by rotating, the capacitance exported with selected needs.
The angle rotatable of the knob is 300 ° or 360 °；Preferably, knob controls the ceramics with 30 ° for a gear
The break-make of band switch 21.It should be appreciated that it is described one gear angle can be arranged according to the gear number of required adjusting, not with
30 ° are restriction.
The change-over switch 2 is additionally provided with open circuit compensation function and short-circuit compensation function；Meanwhile it being opened in 4 conversions
It closes the corresponding knob and increases open circuit gear and short-circuit gear.Specifically, the ceramic band switch 21 is located at two shieldings
The two parts in space respectively 1 layer of setting, wherein one layer of two tip nodes in high electrode are respectively the ends OH and the ends SH, in low electrode
Another layer of two tip nodes are respectively the ends OL and the ends SL, and the wherein ends SH are connected to the short-circuit compensation function, the ends OL with the ends SL
It is not connected as the open circuit compensation function with the ends OH；Pass through the work(of the utility model setting " open circuit compensation and short circuit compensation "
Can, can to whole system (i.e. the input port of RLC digital electric bridges, test connecting line, capacitive interconnector and its conversion open
The input/output end port etc. of pass) while compensate, both conveniently made when carrying out precision measurement compared to more traditional compensation way
With capable of improving the accuracy of test again, and it can ensure the consistency and repeatability of test data after each compensation, therefore
Precision measurement may be implemented.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. a kind of wide-range standard capacitance box, which is characterized in that including：
The capacitance of 36 capacitors in kind, the standard capacitor in the material object capacitor is respectively：1pF、2pF、5pF、
10pF、20pF、50pF、100pF、200pF、500pF、1nF、2nF、5nF、10nF、20nF、50nF、100nF、200nF、
500nF、1μF、2μF、5μF、10μF、20μF、50μF、100μF、200μF、500μF、1mF、2mF、5mF、10mF、20mF、
50mF、100mF、200mF、500mF；
The switching mode of 4 change-over switches, the change-over switch is 1,2,5 systems, and is provided with switch input and turns
Change output switching terminal；The switch input is connect with the two poles of the earth of the capacitor in kind；
Babinet, capacitive output end is provided on the babinet, and the capacitive output end connects with the change-over switch output end
It connects, the capacity for exporting the selected capacitor in kind of the change-over switch.
2. wide-range standard capacitance box according to claim 1, which is characterized in that the material object capacitor, including capacitance
Device metal shielding box and the standard capacitor being arranged in the capacitor metal shielding box；
The high electrode end H and low electrode end L of the standard capacitor are drawn by insulator, are inputted respectively with the change-over switch
End connection, and shielding end G is welded as by metal weld tabs and the capacitor metal shielding box.
3. wide-range standard capacitance box according to claim 2, which is characterized in that
The change-over switch be provided with 9 groups described in switch input；Each switch input includes one high
An electrode input H and low electrode input terminal L；
9 groups of switch inputs of first change-over switch are respectively with capacitance：1pF、2pF、5pF、10pF、20pF、
The two poles of the earth of the capacitor in kind of 50pF, 100pF, 200pF, 500pF are correspondingly connected with；
9 groups of switch inputs of second change-over switch are respectively with capacitance：1nF、2nF、5nF、10nF、20nF、
The two poles of the earth of the capacitor in kind of 50nF, 100nF, 200nF, 500nF are correspondingly connected with；
9 groups of switch inputs of third change-over switch are respectively with capacitance：1μF、2μF、5μF、10μF、20μF、
The two poles of the earth of the capacitor in kind of 50 μ F, 100 μ F, 200 μ F, 500 μ F are correspondingly connected with；
9 groups of switch inputs of 4th change-over switch are respectively with capacitance：1mF、2mF、5mF、10mF、20mF、
50mF、100mF、200mF、500mF。
4. wide-range standard capacitance box according to claim 3, which is characterized in that the change-over switch, including conversion are opened
The ceramic band switch for closing metal shielding box and being arranged in the change-over switch metal shielding box；The change-over switch metal screen
It covers and is additionally provided with metal shielding board in box, which is distinguished into two shielding spaces, while by the pottery
Porcelain band switch is divided into the two parts for being located at two shielding spaces, which is separately connected the capacitor in kind
High electrode end or low electrode end.
5. wide-range standard capacitance box according to claim 4, which is characterized in that the ceramics band switch is located at two
Two parts in shielding space are each provided with multilayer, respectively have 1 layer to be connect with change-over switch output end in two shielding spaces, separately
Respectively there are 9 layers to be correspondingly connected with respectively with the switch input.
6. wide-range standard capacitance box according to claim 5, which is characterized in that set on the wide-range standard capacitance box
4 knobs are equipped with, which is separately connected the ceramic band switch of 4 change-over switches, for controlling the ceramics by rotating
The break-make of band switch, the capacitance exported with selected needs.
7. wide-range standard capacitance box according to claim 6, which is characterized in that the angle rotatable of the knob is
300 ° or 360 °.
8. wide-range standard capacitance box according to claim 7, which is characterized in that the capacitive output end uses four ends
Pair or three end BNC output.
9. according to claim 6-8 any one of them wide-range standard capacitance boxs, which is characterized in that
The change-over switch is additionally provided with open circuit compensation function and short-circuit compensation function；Meanwhile in 4 change-over switches pair
The knob answered increases open circuit gear and short-circuit gear.
10. wide-range standard capacitance box according to claim 9, which is characterized in that the ceramics band switch is located at two
Two parts of a shielding space respectively 1 layer of setting, wherein one layer of two tip nodes in high electrode are respectively the ends OH and the ends SH, low
Another layer of two tip nodes of electrode are respectively the ends OL and the ends SL, and the wherein ends SH are connected to the short circuit compensation work(with the ends SL
Can, the ends OL and the ends OH are not connected as the open circuit compensation function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820153543.0U CN207817185U (en) | 2018-01-30 | 2018-01-30 | A kind of wide-range standard capacitance box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820153543.0U CN207817185U (en) | 2018-01-30 | 2018-01-30 | A kind of wide-range standard capacitance box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207817185U true CN207817185U (en) | 2018-09-04 |
Family
ID=63322098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820153543.0U Withdrawn - After Issue CN207817185U (en) | 2018-01-30 | 2018-01-30 | A kind of wide-range standard capacitance box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108132451A (en) * | 2018-01-30 | 2018-06-08 | 成都开谱电子科技有限公司 | A kind of wide-range standard capacitance box |
-
2018
- 2018-01-30 CN CN201820153543.0U patent/CN207817185U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108132451A (en) * | 2018-01-30 | 2018-06-08 | 成都开谱电子科技有限公司 | A kind of wide-range standard capacitance box |
| CN108132451B (en) * | 2018-01-30 | 2024-01-26 | 成都开谱电子科技有限公司 | Wide-range standard capacitor box |
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