CN202486187U - Passive RC integrator - Google Patents
Passive RC integrator Download PDFInfo
- Publication number
- CN202486187U CN202486187U CN2011205197554U CN201120519755U CN202486187U CN 202486187 U CN202486187 U CN 202486187U CN 2011205197554 U CN2011205197554 U CN 2011205197554U CN 201120519755 U CN201120519755 U CN 201120519755U CN 202486187 U CN202486187 U CN 202486187U
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- CN
- China
- Prior art keywords
- integrator
- metal housing
- coaxial metal
- resistance
- passive
- 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 - Lifetime
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- 239000002184 metal Substances 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims abstract description 6
- 230000000630 rising effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The utility model discloses a passive RC integrator, comprising a coaxial metal housing. Two ends of the coaxial metal housing are respectively connected with an integrator input terminal and an integrator output terminal, a cross-core capacitor is coaxially connected in the coaxial metal housing, and a non-lead high-frequency resistor is connected with a fixed resistor support and a connection conductor. The resistor and the capacitor are arranged in the totally-enclosed coaxial metal housing. According to the utility model, a steep-sided pulse with a rising edge of 2 ns is applied at the input terminal of the integrator, the output waveform of the integrator is measured to determine whether a high-frequency spike appears, and the high frequency of the integrator can reach more than 100 MHz.
Description
Technical field
The utility model belongs to the device of measuring ac magnetic field and alternating current.
Background technology
Ac magnetic field and alternating current (hereinafter to be referred as measuring electric current) the electromagnetic induction principle method commonly used of measuring is measured, like Luo-coil, and the B-DOT probe, D-DOT probe measurement voltage also need be used integrator in addition.Luo-coil output is the differentiated voltage signal of tested electric current, and obtain tested electric current need carry out integration to the voltage signal of Luo-coil output, and the performance of integrator is one of critical component of influence measurement electric current accuracy.Common integral device active (electron-amplifier is arranged), passive and hybrid three kinds.Active integrator is highly sensitive, but has the drift and the little shortcoming of dynamic range of amplifier; Big, the good stability of passive integrator measurement dynamic range, but sensitivity is low.Passive RC integrator is the integrator that comparatively generally adopts.The major parameter of passive integrator is the survey frequency scope, and the lower limit of survey frequency is that promptly the RC product is big more by the decision of integration RC time constant, and the initial lower frequency limit of integration is low more; RC integrator upper limiting frequency is that in a plurality of distribution parameters, what play significant feature is the remaining inductance of resistance and the remaining inductance of capacitor by the distribution parameter decision of RC, and remaining inductance and resistance and electric capacity all are series relationship.The upper limiting frequency that improves integrator mainly is to reduce the remaining inductance of resistance and electric capacity, reduces the inductance in RC loop simultaneously.The remaining inductance that reduces resistance at present is to adopt little resistance resistance series connection, and it is a plurality of capacitor parallel connections that capacitor reduces remaining inductance, and this method technology is comparatively complicated, and its final effect is limited.
Adopt the method for a plurality of small resistor series connection and a plurality of little electric capacity parallel connections to have complex process and improve the limited shortcoming of performance at present, to develop a kind of structure and technology comparatively simple for this reason, and the comparatively desirable integrator of performance is the object of the invention.
Summary of the invention
The purpose of the utility model is to provide a kind of passive RC integrator.
The technical scheme of the utility model is achieved in that
Comprise the coaxial metal housing, connect integrator input end and integrator output terminal respectively, in the coaxial metal housing, be coaxially connected with through condenser, do not have the lead-in wire alternating-current resistance and be connected with fixed resistance support and bonding conductor at coaxial metal housing two ends.
Resistance and capacitor are installed in the totally enclosed coaxial metal housing.
Coaxial connector is adopted in integrator input and integrator output.
Be connected with the through condenser support with through condenser.
The integrator input end of the utility model applies the steep-sided pulse that rising edge is 2ns, and the high frequency spine does not appear in the output waveform of measuring integrator, and the high frequency characteristics of integrator can reach more than the 100MHz.
Description of drawings
Accompanying drawing is the structural representation of the utility model
Wherein, 1 is integrator output terminal; 2 is metal shell; 3 is through condenser; 4 is the through condenser support; 5 is bonding conductor; 6 for there not being the lead-in wire alternating-current resistance; 7 is the integrator input end.
Embodiment
Shown in accompanying drawing; Comprise the coaxial metal housing; Connect integrator input end and integrator output terminal respectively at coaxial metal housing two ends, in the coaxial metal housing, be coaxially connected with through condenser, do not have the lead-in wire alternating-current resistance and be connected with fixed resistance support and bonding conductor.Resistance and capacitor are installed in the totally enclosed coaxial metal housing.Coaxial connector is adopted in integrator input and integrator output.Be connected with the through condenser support with through condenser.
Making comparatively desirable RC integrator, at first is to choose less resistance of remaining inductance and through condenser, secondly is structural design.Resistance is selected high frequency characteristics preferred metal film resistance for use, removes resistance lead, and conduction is directly with the cap metal firmware of resistance end, the inductance that goes between and bring with minimizing.Electric capacity is selected ring-plate capacitor for use.The ring-plate capacitor structure has only two plate electrodes up and down, and remaining inductance own is minimum.Ring-plate capacitor does not have lead-foot-line, can lead-in inductance be reduced to minimum.Conduction adopts annular conducting surface up and down.Conducting surface is connected respectively with shaft housing and conducting strip, and this mode of connection is compared normal pins line capacitance utensil has the advantage that lead inductance is little, conductive area is big, contact resistance is little.Resistance and capacitor are installed in the totally enclosed coaxial metal housing, and coaxial connector is adopted in input and output, and coaxial configuration can reduce the conduction inductance of conductor, and metal all-closed structure can strengthen anti-electromagnetic interference performance.
Claims (3)
1. passive RC integrator; Comprise coaxial metal housing (2); It is characterized in that, connect integrator input end (7) and integrator output terminal (1) respectively, in coaxial metal housing (2), be coaxially connected with through condenser (3) at coaxial metal housing (2) two ends; Not having lead-in wire alternating-current resistance (6) is connected with fixed resistance support and bonding conductor (5)
Resistance and capacitor are installed in the totally enclosed coaxial metal housing (2).
2. a kind of passive RC integrator according to claim 1 is characterized in that, coaxial connector is adopted in integrator input and integrator output.
3. a kind of passive RC integrator according to claim 1 is characterized in that, is connected with through condenser support (4) with through condenser (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205197554U CN202486187U (en) | 2011-12-13 | 2011-12-13 | Passive RC integrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205197554U CN202486187U (en) | 2011-12-13 | 2011-12-13 | Passive RC integrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202486187U true CN202486187U (en) | 2012-10-10 |
Family
ID=46960601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205197554U Expired - Lifetime CN202486187U (en) | 2011-12-13 | 2011-12-13 | Passive RC integrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202486187U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154013A (en) * | 2016-06-17 | 2016-11-23 | 西安交通大学 | A kind of compound Luo-coil integrating resistor and manufacture method thereof |
| CN107515354A (en) * | 2017-10-12 | 2017-12-26 | 国家电网公司 | A kind of circuit artificial earthing short-circuit test overall process current detecting system |
| CN115047247A (en) * | 2022-06-07 | 2022-09-13 | 西北核技术研究所 | Method for testing parameters of passive RC integrator under low resistance condition |
| CN107515354B (en) * | 2017-10-12 | 2024-04-19 | 国家电网公司 | Whole-process current testing system for line manual grounding short circuit test |
-
2011
- 2011-12-13 CN CN2011205197554U patent/CN202486187U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154013A (en) * | 2016-06-17 | 2016-11-23 | 西安交通大学 | A kind of compound Luo-coil integrating resistor and manufacture method thereof |
| CN106154013B (en) * | 2016-06-17 | 2018-12-04 | 西安交通大学 | A kind of compound Rogowski coil integrating resistor and its manufacturing method |
| CN107515354A (en) * | 2017-10-12 | 2017-12-26 | 国家电网公司 | A kind of circuit artificial earthing short-circuit test overall process current detecting system |
| CN107515354B (en) * | 2017-10-12 | 2024-04-19 | 国家电网公司 | Whole-process current testing system for line manual grounding short circuit test |
| CN115047247A (en) * | 2022-06-07 | 2022-09-13 | 西北核技术研究所 | Method for testing parameters of passive RC integrator under low resistance condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHAANXI ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140408 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: SHAANXI ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140408 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710054 XI'AN, SHAANXI PROVINCE TO: 100761 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140408 Address after: 100761 West Chang'an Avenue, Beijing, No. 86, No. Patentee after: State Grid Corporation of China Patentee after: Shaanxi Electric Power Research Institute Address before: 710054 No. 308 Youyi East Road, Shaanxi, Xi'an Patentee before: Shaanxi Electric Power Research Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |