CN107741517A - A kind of current sensor probe and its assemble method - Google Patents
A kind of current sensor probe and its assemble method Download PDFInfo
- Publication number
- CN107741517A CN107741517A CN201711116309.7A CN201711116309A CN107741517A CN 107741517 A CN107741517 A CN 107741517A CN 201711116309 A CN201711116309 A CN 201711116309A CN 107741517 A CN107741517 A CN 107741517A
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- iron core
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- 239000000523 sample Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004804 winding Methods 0.000 claims abstract description 96
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000007769 metal material Substances 0.000 claims abstract description 5
- 230000000977 initiatory effect Effects 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000004806 packaging method and process Methods 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000010923 batch production Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- GQWNECFJGBQMBO-UHFFFAOYSA-N Molindone hydrochloride Chemical compound Cl.O=C1C=2C(CC)=C(C)NC=2CCC1CN1CCOCC1 GQWNECFJGBQMBO-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000013017 mechanical damping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/183—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention provides a kind of current sensor probe and its assemble method, probe includes support frame, iron core, winding and pin, the support frame includes upper lid and lower cover, upper lid and lower cover connect to form accommodating cavity, the iron core is installed in accommodating cavity, the winding is rotating around on iron core and support frame, and lid is provided with pin in support frame, and the connector lug at winding both ends is connected with pin.The probe assembling of the present invention is simple and convenient, substantially increases the packaging efficiency of itself of popping one's head in, reduces production cost, while the support frame for introducing of popping one's head in forms an entirety, and inside solves the problems, such as that winding easily breaks without mobilizable part.In addition, in finished product Integration Assembly And Checkout link, the probe assembled is as an entirety, each pin corresponds, and without arduously distinguishing pin numbering again, is easy to assemble with pcb board, and pin uses hard metal material, fixture test can be used, greatly improve finished product packaging efficiency and testing efficiency.
Description
Technical field
The present invention relates to sensor field, more particularly, to a kind of structure of current sensor probe.
Background technology
Current sensor is used to measure electric current, is that the secondary devices such as measuring instrumentss in power system, relay protection obtain one
The sensor of minor loop current information, it is electrical equipment important in power system, carries the isolation between high and low pressure system
And the function that high pressure amount is changed to low pressure amount.Current sensor whether working properly in itself, safety to whole power system,
Protection, measurement etc. have extremely important meaning.
Operation principle is modulated based on magnetic or the current sensor of fluxgate mode, is measurement accuracy grade highest sensing
Device, its structure can be divided into probe and control circuit (pcb board) two parts.Current sensor probe structure is complex, most common
Structure be three iron cores, four windings, each winding has two connector lugs, altogether 8 connector lugs.Also, this four windings
Need mutually to distinguish Same Name of Ends.Which results in the production of probe, packaging technology are extremely complex, traditional approach is using different colours
Sleeve pipe indicates different connector lug, because connector lug number is more, can cause that process is various, packaging efficiency is low and easily error
The problem of.After probe is completed, it is also necessary to very cumbersome by other multiple working procedures, wiring processes such as tests.Often walk process
Wiring is required for, is wasted time and energy, leverages production efficiency.In addition, traditional winding connection relative probe or pcb board are can
Activity, easily cause winding broken string.
The content of the invention
Present invention aims at a kind of structure of current sensor probe is provided, to solve to make because connector lug number is more
Into self-assembles efficiency it is low, the very cumbersome production efficiency of wiring process is low and winding connection relative probe or pcb board
It is mobilizable, easily causes the problem of winding breaks.
To achieve the above object, the technical solution adopted by the present invention is:
A kind of current sensor probe, including support frame, iron core, winding and pin, the support frame include upper lid
And lower cover, upper outer side of lid wall are provided with the first projection, described first is raised above lid lower surface and extends downwardly, lower outer side of lid
Wall is provided with the second projection with the raised corresponding place of upper outer side of lid wall, and described first, which is raised above lid lower surface, extends downwardly
Position be provided with the first hole for matching with the second raised size, upper lid and lower cover pass through the first hole in first projection
The second projection on hole and lower lid is connected together to form accommodating cavity;
Cap upper surface is provided with two group of the 3rd projection by axisymmetric position of support frame central shaft in the support frame,
3rd projection includes a rectangular preiection, a buckle and multiple cylindrical protrusions, and the cylindrical protrusions and buckle are equal
On rectangular preiection, the buckle is located on rectangular preiection to be covered on the position at support frame center, the support frame
Two group of the 3rd raised distribution form it is different:One group of cylindrical protrusions is distributed on rectangular preiection with identical spacing, another group of circle
Column-shaped projection is distributed on rectangular preiection with different spacing, and a pin is equipped with each cylindrical protrusions;
Installation is cored in the accommodating cavity, and the iron core is provided with winding, and the accommodating cavity lateral wall is provided with the second hole
Hole, second hole include being arranged on the perforate in upper lid lower outside face corresponding to the 3rd projection and are arranged on outside lower cover top
The perforate of side correspondence position, the connector lug at winding both ends is drawn by the second hole to be connected with pin;
The upper surface covered in the support frame is provided with the 4th projection, and the 4th projection includes a rectangular preiection and one
Individual cylindrical protrusions, the cylindrical protrusions are located on rectangular preiection, and the lower surface of the support frame lower cover is convex provided with the 5th
Rise, the 4th projection and the 5th projection axle centered on support frame are distributed in up and down on cap surface;The upper lid passes through
Buckle and the 4th projection in the projection of upper surface the 3rd are connected with pcb board, and the lower cover passes through the projection of lower surface the 5th and housing
Connection.
Further, it is provided with insulation spacer between the adjacent winding.
Further, the support frame be shaped as it is annular or square, the shape of the iron core and support frame
Shape is consistent.
Further, the quantity of the iron core is 1~4, the number of the winding than iron core number more than one, it is described
The number of pin is 2 times of winding number.
Further, the material of the winding is copper enameled wire, and the material of the pin is hard metal material.
A kind of assemble method of current sensor probe, comprises the following steps:
1) each iron core is reserved into the connector lug at both ends respectively by same direction uniformly around a upper winding, by around
Distinguish initiating terminal and terminating end in the direction that group is advanced;
2) first iron core for winding winding is inserted in the cavity of upper lid of support frame, and by the connector lug at both ends from
Drawn in support frame in lid perforate, initiating terminal, the terminating end of connector lug are respectively wound around defined pin in sequence
On;
3) after being put into first iron core winding in the cavities, second iron core for winding winding is put into the same way,
The direction that iron core is put into cavity is identical, and equally draws the connector lug at both ends from perforate, and is wrapped in respective specified
On pin;Iron core winding is sequentially added afterwards, and both ends connector lug is drawn and is wrapped on the pin of respective specified from perforate;
4) after the installation for completing whole iron core windings, lid and lower cover in support frame are passed through into first in the first projection
Hole and the second projection are fastened togather;
5) above-mentioned entirety is pressed into same direction uniformly around last upper winding, equally wound the connector lug at both ends
In respective pins;
6) connector lug of the winding of all windings and corresponding pin are welded together, it is final to realize electrical connection.
Further, in the step 2 per being provided with insulation spacer between adjacent winding, in the step 6 connector lug with draw
Pin is welded together with tin pot method.
The invention has the advantages that:
(1) current sensor probe assembling provided by the invention is simple and convenient, substantially increases the assembling effect of probe itself
Rate, suitable batch production.Because iron core is inserted successively, four windings are drawn successively, can be distinguished during extraction each
The both ends connector lug of winding, while pin is distinguish between by position distribution difference, the both ends connector lug of each winding can be with one
One is accordingly wound on defined pin, and winding no longer needs the sleeve pipe of a variety of colors as differentiation.This greatly simplifies
Probe assembling procedure, the possibility of error is reduced, suitable batch production, improves production efficiency.
(2) current sensor probe provided by the invention improves the testing efficiency of probe.The probe assembled, in effect
In test process, as an entirety, eight pins correspond, and without arduously distinguishing pin numbering again, and pin is hard
Matter metal material, fixture test can be used, greatly promote testing efficiency.
(3) current sensor probe provided by the invention, because two groups of pin distributions are different, is kept away in finished product assembling process
Exempt from probe and pcb board setup error, also improve the efficiency with pcb board assembling, saved labour cost.
(4) current sensor probe provided by the invention introduces a support frame for being provided with pin in structure, around
The connector lug of group corresponds with pin to be connected, and around an entirety is formed on the support frame, inside does not have last winding
There is mobilizable part, solve the problems, such as that winding easily breaks.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the preferred embodiment of the present invention.
Wherein, 1, support frame;2nd, iron core;3rd, pin;4th, first is raised;5th, the first hole;6th, second is raised;7th, the 3rd
It is raised;8th, the 4th is raised;9th, the 5th is raised;10th, buckle;11st, upper lid;12nd, lower cover;13rd, perforate.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, but the present invention can limit according to claim
Fixed and covering multitude of different ways is implemented.
Specific embodiment:
A kind of current sensor probe, including support frame 1, iron core 2, winding and pin 3.The support frame 1 includes
Upper lid 11 and lower cover 12, the upper lateral wall of lid 11 are provided with the first projection 4, first projection 4 beyond the upper lower surface of lid 11 and to
Lower extension, the lateral wall of lower cover 12 are provided with the second projection 6, first projection 4 with the raised corresponding place of the upper lateral wall of lid 11
The position extended downwardly beyond the upper lower surface of lid 11 is provided with the first hole 5 to match with the second raised 6 sizes, and upper lid 11 is with
Lid 12 is connected together to form accommodating cavity by the second projection 6 on the first hole 5 and lower cover 12 in first projection 4.Institute
That states support frame 1 is shaped as annular or square, and the shape of the iron core 1 and the shape of support frame are consistent.It is preferred that
, support frame 1 for annular, the number of the first projection 4 is identical with the number of the second projection 6, and using annular brace framework as
Central shaft is uniformly distributed.
Installation cored 2 in the accommodating cavity, each iron core 2 are provided with a winding, two terminations of the winding
The end of a thread is connected with a pin 3 respectively.The number of the winding than iron core 2 number more than one, a winding having more is wound on
In support frame 1, the number of the pin 3 is 2 times of winding number.For example, when iron core 2 has three, winding has four, pin
3 have eight.
In the support frame upper surface of lid 11 using the central shaft of support frame 1 as axisymmetric position be provided with two groups it is different
3rd projection 7 of distribution form, the 3rd projection 7 include a rectangular preiection, a buckle 10 and multiple cylindrical protrusions,
The cylindrical protrusions and buckle 10 are respectively positioned on rectangular preiection, and the buckle position 10 is in close support frame 1 on rectangular preiection
The position at center, the pin 3 are arranged in cylindrical protrusions, one pin 3 of corresponding installation in each cylindrical protrusions.It is described
Accommodating cavity lateral wall is provided with the second hole, and winding both ends connector lug is drawn out of support frame 1 accommodating cavity on iron core 2,
Second hole includes being arranged on the perforate 13 in the upper lower outside face of lid 11 corresponding to the 3rd projection 7 and is arranged on lower cover 12
The perforate 13 of position corresponding to portion's lateral surface, the connector lug at the both ends of winding is drawn by the second hole to be connected with pin 3.It is excellent
Selection of land, perforate 13 are shaped as semicircle, and the perforate 13 after upper lid 11 and lower cover 12 merge forms a complete circle.
When probe is provided with three iron cores 2, four windings, during eight pins 3, the one of which circle of eight cylindrical protrusions
Column-shaped projection is uniformly distributed, and in another set cylindrical protrusions, raised spacing is different:Two cylinders close to edge
Raised spacing is more than the spacing of two other cylindrical protrusions.Winding on each iron core 2 distinguishes initiating terminal by the direction advanced
And terminating end.The end of a thread of specific winding distinguishes initiating terminal and terminating end, is connected with the pin of ad-hoc location.Such as first around
The initiating terminal of group connects first pin, and the terminating end of first winding connects second pin;The initiating terminal of second winding
The 3rd pin is connected, the terminating end of second winding connects the 4th pin;The like.Multiple iron core windings, are put into appearance
Put that the direction of intracavitary is identical, that is, the direct of travel for referring to winding wire is identical.So the initiating terminal and terminating end of each winding are to determine
, two groups of cylindrical protrusions distribution that pin 3 is set is different, is numbered with the pin 3 for distinguishing different, realize winding connector lug and
Pin 3 is corresponding one by one.In addition, two groups of pins 3 are distributed difference, it is also convenient for distinguishing the both ends of probe.When being connected with pcb board,
Direction inverse time, just do not install, avoid probe and pcb board setup error.
Further, the pin 3 is hard metal material, and it is fixed in the cylindrical protrusions of the 3rd projection 7, can will be around
The electric signal of group is conducted to pcb board or test fixture.The material of the winding is copper enameled wire, is provided between the adjacent winding
Insulation spacer.When copper enameled wire breakage, insulation spacer can play insulating effect.In addition, the insulation spacer can also rise
To the mechanical damping effect between iron core winding.Moreover, when apart from each other between winding, iron core winding can be avoided to exist with padded
Too loosened in the accommodating cavity of support frame 1.
The upper surface of lid 11 is provided with the 4th projection 8 in the support frame, and the 4th projection 8 includes a rectangular preiection
With a cylindrical protrusions, the cylindrical protrusions are located on rectangular preiection, and the lower surface of the support frame lower cover 11 is provided with
5th projection 9, the 4th projection 8 and the 5th axle centered on support frame 1 of projection 9 are evenly distributed on cap surface up and down
On.4th projection 8 and the 5th projection 9 can also protect the winding being wound in support frame 1, avoid outer layer winding wire collide with and
Abrasion.The lower cover 12 is connected by the projection of lower surface the 5th 9 with housing.The upper lid 11 by the projection of upper surface the 4th 8 with
Pcb board connects, and there is perforate pcb board position corresponding to cylindrical protrusions, and cylindrical protrusions carry out position by the perforate on pcb board
Limit.There is out frame pcb board position corresponding to buckle 10 in 3rd projection 7, and probe is installed on pcb board, and buckle 10 has one
Fixed elasticity, probe can be firmly stuck with pcb board.After probe and pcb board realization are mechanically fixed, pin 3 can weld
It is connected on PCB, realizes electrical connection.
Specific assembling process can be as following:
1) each iron core is reserved into the connector lug at both ends respectively by same direction uniformly around a upper winding, by around
Distinguish initiating terminal and terminating end in the direction that group is advanced;
2) iron core for winding winding is inserted in the cavity covered in support frame, and by the connector lug at both ends from support frame
Upper lid one of perforate in draw, as defined in initiating terminal, the terminating end of connector lug are respectively wound around in sequence
On pin;
3) after being put into the insulation spacer between iron core winding in the cavities, second is put into the same way and winds winding
Iron core, the direction that iron core is put into cavity is identical, and the terminals of two windings are corresponding, and equally by the connector lug at both ends from same
Draw, and be wrapped on the pin of respective specified in one perforate;Insulation spacer is added afterwards and the 3rd winds winding
Iron core, both ends connector lug are drawn and are wrapped on the pin of respective specified from another perforate;
4) after the installation for completing three iron core windings, lid and lower cover in support frame are passed through into first in the first projection
Hole and the second projection are fastened togather;
5) by the above-mentioned overall coiling for carrying out the 4th winding, direction of winding is identical with iron core winding direction, then by the
The connector lug of four windings is wrapped in respective pins;So it is grouped lead, connection pin that can be as short as possible;
6) it is the connector lug of the winding of all windings and pin is welded together with tin pot method, it is final to realize electrical connection.
Assembled using the present embodiment device, assembling process is simple and convenient, substantially increases the assembling effect of probe itself
Rate, meanwhile, production efficiency is improved, reduces production cost.In addition, the probe assembled is in finished product Integration Assembly And Checkout link
As an entirety, each pin corresponds, and without arduously distinguishing pin numbering again, is easy to assemble with pcb board, and pin
Using hard material, fixture test can be used, greatly improve finished product packaging efficiency and testing efficiency.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. current sensor probe, it is characterised in that including support frame, iron core, winding and pin, the support frame Including upper lid and lower cover, upper outer side of lid wall is provided with the first projection, and described first is raised above lid lower surface and extends downwardly, Lower cover lateral wall is provided with the second projection with the raised corresponding place of upper outer side of lid wall, and described first is raised above lid lower surface The position extended downwardly is provided with the first hole to match with the second raised size, and upper lid and lower cover pass through in first projection The first hole and lower lid on the second projection be connected together to form accommodating cavity;Cap upper surface is provided with two group of the 3rd projection by axisymmetric position of support frame central shaft in the support frame, described 3rd projection includes a rectangular preiection, a buckle and multiple cylindrical protrusions, and the cylindrical protrusions and buckle are respectively positioned on On rectangular preiection, the buckle is located at two covered on rectangular preiection on the position at support frame center, the support frame The 3rd raised distribution form of group is different:One group of cylindrical protrusions is distributed on rectangular preiection with identical spacing, another group of cylinder Projection is distributed on rectangular preiection with different spacing, and a pin is equipped with each cylindrical protrusions;Installation is cored in the accommodating cavity, and the iron core is provided with winding, and the accommodating cavity lateral wall is provided with the second hole, institute Stating the second hole includes being arranged on the perforate in upper lid lower outside face corresponding to the 3rd projection and is arranged on lower cover upper outside face The perforate of correspondence position, the connector lug at winding both ends is drawn by the second hole to be connected with pin;The upper surface covered in the support frame is provided with the 4th projection, and the 4th projection includes a rectangular preiection and a circle Column-shaped projection, the cylindrical protrusions are located on rectangular preiection, and the lower surface of the support frame lower cover is provided with the 5th raised, institute State the 4th projection and the 5th projection axle centered on support frame is distributed in up and down on cap surface;The upper lid passes through upper surface Buckle and the 4th projection in 3rd projection are connected with pcb board, and the lower cover is connected by the projection of lower surface the 5th with housing.
- 2. current sensor probe according to claim 1, it is characterised in that felt pad is provided between the adjacent winding Piece.
- 3. current sensor probe according to claim 1, it is characterised in that the support frame be shaped as annular or Person is square, and the shape of the iron core and the shape of support frame are consistent.
- 4. current sensor probe according to claim 1, it is characterised in that the quantity of the iron core is 1~4.
- 5. current sensor probe according to claim 1, it is characterised in that number of the number of the winding than iron core More one, the number of the pin is 2 times of winding number.
- 6. current sensor probe according to claim 1, it is characterised in that the material of the winding is copper enameled wire.
- 7. current sensor probe according to claim 1, it is characterised in that the material of the pin is hard metal material Material.
- 8. the assemble method of any described current sensor probes of claim 1-7, it is characterised in that comprise the following steps:1) each iron core is reserved into the connector lug at both ends, by winding row respectively by same direction uniformly around a upper winding Distinguish initiating terminal and terminating end in the direction entered;2) first iron core for winding winding is inserted in the cavity of upper lid of support frame, and by the connector lug at both ends from support Drawn on framework in lid perforate, initiating terminal, the terminating end of connector lug are respectively wound around on defined pin in sequence;3) after being put into first iron core winding in the cavities, second iron core for winding winding, iron core are put into the same way The direction being put into cavity is identical, and equally draws the connector lug at both ends from perforate, and is wrapped in the pin of respective specified On;Iron core winding is sequentially added afterwards, and both ends connector lug is drawn and is wrapped on the pin of respective specified from perforate;4) after the installation for completing whole iron core windings, lid and lower cover in support frame are passed through into the first hole in the first projection It is fastened togather with the second projection;5) above-mentioned entirety is pressed into same direction uniformly around last upper winding, the connector lug at both ends is equally wrapped in phase Answer on pin;6) connector lug of the winding of all windings and corresponding pin are welded together, it is final to realize electrical connection.
- 9. current sensor probe assemble method according to claim 8, it is characterised in that per adjacent in the step 2 Insulation spacer is provided between winding.
- 10. current sensor probe assemble method according to claim 8, it is characterised in that connector lug in the step 6 It is welded together with tin pot method with pin.
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CN201711116309.7A CN107741517A (en) | 2017-11-13 | 2017-11-13 | A kind of current sensor probe and its assemble method |
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CN201711116309.7A CN107741517A (en) | 2017-11-13 | 2017-11-13 | A kind of current sensor probe and its assemble method |
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Cited By (1)
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CN112992808A (en) * | 2021-02-09 | 2021-06-18 | 宁波中车时代传感技术有限公司 | Magnetic field detection sensing device and fluxgate chip packaging structure thereof |
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CN106501594A (en) * | 2016-12-25 | 2017-03-15 | 杭州亿为科技有限公司 | AC motor control current digital sensor |
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CN201503765U (en) * | 2009-09-11 | 2010-06-09 | 何排枝 | Through type low-tension current mutual inductor |
CN202282241U (en) * | 2011-11-15 | 2012-06-20 | 佛山市华信微晶金属有限公司 | Power supply and measurement integrated current transformer |
CN202473481U (en) * | 2012-01-10 | 2012-10-03 | 成都金之川电子有限公司 | Integrated spiral coil inductor |
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