CN110310806A - A kind of current transformer - Google Patents
A kind of current transformer Download PDFInfo
- Publication number
- CN110310806A CN110310806A CN201910705104.5A CN201910705104A CN110310806A CN 110310806 A CN110310806 A CN 110310806A CN 201910705104 A CN201910705104 A CN 201910705104A CN 110310806 A CN110310806 A CN 110310806A
- Authority
- CN
- China
- Prior art keywords
- magnetic core
- support portion
- rib support
- lead
- secondary coil
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
- H01F27/2852—Construction of conductive connections, of leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
- H01F2027/2857—Coil formed from wound foil conductor
Abstract
The invention discloses a kind of current transformers, including ontology, the ontology includes the first magnetic core and the second magnetic core, second magnetic core includes the first rib support portion, the second rib support portion for being wound with the center pillar winding section of secondary coil and rib support in the center pillar winding section being connected on first magnetic core, the first rib support portion connects one end of the center pillar winding section and is fixed on the side of first magnetic core, and the second rib support portion connects the other end of the center pillar winding section and is fixed on the other side of first magnetic core；Gap between the center pillar winding section and first magnetic core is equipped with primary coil.Current transformer provided in an embodiment of the present invention has a core structure design method of innovation, not only compact-sized, height is lower, size is smaller, but also is conducive to automated production.
Description
Technical field
The present invention relates to electric energy detection technical fields, more particularly, to a kind of current transformer.
Background technique
Currently, current transformer is widely used in detection and multiple electrical domains such as safety device, as motor protector,
Electric bottle charging device, safety utilization of electric power device, wireless charging device etc., operation of current transformers principle: armature winding the number of turns is seldom,
It goes here and there in the route for the electric current for needing to measure, therefore is flowed through in whole electric currents of route, secondary winding turns are relatively more, are serially connected in
In measuring instrumentss and protective loop, at work, its secondary loop is closure, therefore measuring instrumentss always to current transformer
With the impedance very little of protective loop series coil, the close short circuit of the working condition of current transformer.Current transformer is primary
Side high current is converted into secondary side low current and comes using secondary side can not open a way.With the ting model of electronic product and frivolous
Change development, it is desirable that current transformer also to minimize and ultrathin.
In the prior art, as shown in Figure 1, the magnet ring winding metal wire of current transformer is arranged with forming secondary coil 2 '
There is the primary coil 3 ' of sebific duct to pass through magnet ring and is fixed on bakelite pedestal 1 ' with secondary coil 2 ' by dispensing, bakelite pedestal 1 '
Secondary coil PIN foot 4 ' and primary coil PIN foot 5 ' are had, the pin peeling wicking and wire wound of secondary coil 2 ' are secondary
In grade coil PIN foot 4 ', the pin peeling wicking and wire wound of primary coil 3 ' are in primary coil PIN foot 5 '.But this
The overall dimensions of kind current transformer are still larger, are unable to satisfy the requirement of new application scenarios low clearance.
Summary of the invention
The present invention provides a kind of current transformer, by the core structure design method of innovation, not only compact-sized, height
It is lower, size is smaller, and be conducive to automated production.
In order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of current transformer, including ontology, described
Body include the first magnetic core and the second magnetic core, second magnetic core include be wound with secondary coil center pillar winding section and will be described in
The first rib support portion, the second rib support portion that rib support in column winding section is connected on first magnetic core, described first
Rib support portion connects one end of the center pillar winding section and is fixed on the side of first magnetic core, the second rib support
Portion connects the other end of the center pillar winding section and is fixed on the other side of first magnetic core；The center pillar winding section with it is described
Gap between first magnetic core is equipped with primary coil.
Preferably, the top of the first rib support portion, the second rib support portion top on be all provided with
There are several secondary coil lead pads, several primary coil pin pads.
Preferably, the primary coil is copper foil winding.
Preferably, two primary coil terminal pins for welding are connected on the copper foil winding, it is described
Outside bending forming of the end of primary coil terminal pin towards the copper foil winding；
On the ipsilateral pad for reclining and being welded on the first rib support portion of two primary coil terminal pins or
On the pad of the second rib support portion；Or
One of them described primary coil terminal pin reclines and is welded on the pad of the first rib support portion,
In another described primary coil terminal pin recline and be welded on the pad of the second rib support portion.
Preferably, the two sides of the copper foil winding are bent to form bending part towards second magnetic core, described
Two sides and the first rib support portion, described second of two bending parts of copper foil winding in the center pillar winding section
Between rib support portion.
Preferably, the end of each bending part turns down outward forms folding portion.
Preferably, a pin of the secondary coil is welded on a wherein grade for the first rib support portion
On coil lead pad, another pin of the secondary coil is welded on wherein another secondary wire of the first rib support portion
It encloses in lead pad；Or
One lead of the secondary coil is welded on a wherein grade coil lead pad for the second rib support portion
On, another lead of the secondary coil is welded on wherein another secondary coil lead pad of the second rib support portion
On.
Preferably, a lead of the secondary coil is welded on a wherein grade for the first rib support portion
On coil lead pad, another lead of the secondary coil is welded on a wherein secondary coil for the second rib support portion
In lead pad.
Preferably, first magnetic core, second magnetic core are soft magnetic Ni-Zn ferrite or manganese-zinc ferrite
Magnetic core.
Preferably, first magnetic core is in rectangular plate-like structure, and the section of second magnetic core is in I-shaped knot
Structure, first magnetic core are fixedly connected with second magnetic core by dispensing.
Compared with the prior art, the embodiment of the present invention has the following beneficial effects:
By designing new core structure, first magnetic core, second magnetic core are assembled, first magnetic core and institute
It states and the primary coil is set between the second magnetic core, the center pillar winding section of first magnetic core winds secondary coil, wherein described
Primary coil, the secondary coil pin can flexibly draw setting in the first rib support portion and/second rib
On support portion.
Second magnetic core uses " H " type structure, and first magnetic core uses plank frame, assembled between the two,
To which instead of magnet ring in the prior art, flattening in this way is designed, the height of current transformer can be effectively reduced
Degree.
In addition, the center pillar winding section is used to wind the secondary coil, using the primary coil of copper foil winding etc.
Gap between the center pillar winding section and first magnetic core, the assembling that can be effectively reduced current transformer are difficult
Degree, to be conducive to improve production efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the current transformer of the prior art；
Fig. 2 is the structural schematic diagram of the current transformer of the embodiment of the present invention one；
Fig. 3 is the explosive view of the current transformer of the embodiment of the present invention one；
Fig. 4 is another structural schematic diagram of secondary coil in Fig. 3；
Fig. 5 is another structural schematic diagram of primary coil in Fig. 3；
Fig. 6 is another structural schematic diagram of primary coil in Fig. 3；
Fig. 7 is the structural schematic diagram of the current transformer of the embodiment of the present invention two；
Fig. 8 is the structural schematic diagram of the current transformer of the embodiment of the present invention three；
Fig. 9 is the structural schematic diagram of the current transformer of the embodiment of the present invention four；
Figure 10 is the structural schematic diagram of the current transformer of the embodiment of the present invention five；
Figure 11 is the structural schematic diagram of the current transformer of the embodiment of the present invention six；
Wherein, the appended drawing reference in Figure of description is as follows:
1, the first magnetic core；
2, the second magnetic core；21, center pillar winding section；22, the first rib support portion；23, the second rib support portion；24, secondary
Coil lead pad；25, primary coil pin pad；
3, primary coil；31, the end of primary coil terminal pin；32, bending part；33, folding portion；
4, secondary coil.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention one:
Fig. 2 and Fig. 3 are referred to, the embodiment of the present invention one provides current transformer, including ontology, and ontology includes the first magnetic
Core 1 and the second magnetic core 2, the second magnetic core 2 include being wound with the center pillar winding section 21 of secondary coil 4 and by 21 rib of center pillar winding section
The first rib support portion 22, the second rib support portion 23 of support connection on the first magnetic core 1, the connection of the first rib support portion 22
One end of center pillar winding section 21 and the side for being fixed on the first magnetic core 1, the second rib support portion 23 connect center pillar winding section 21
The other end and the other side for being fixed on the first magnetic core 1；Gap between center pillar winding section 21 and the first magnetic core 1 is equipped with primary coil
3。
In the present embodiment, by designing new core structure, the first magnetic core 1, the second magnetic core 2 are assembled, the first magnetic core 1
Primary coil 3 is set between the second magnetic core 2, and the center pillar winding section 21 of the first magnetic core 1 winds secondary coil 4, wherein primary line
The pin for enclosing 3, secondary coil 4, which can flexibly be drawn, to be arranged on the first rib support portion 22 and/the second rib support portion 23.
Second magnetic core 2 uses " H " type structure, and the first magnetic core 1 uses plank frame, assembled between the two, to take
For magnet ring in the prior art, flattening in this way is designed, and can be effectively reduced the height of current transformer.
In addition, center pillar winding section 21 is set to center pillar for winding secondary coil 4, using the primary coil 3 of copper foil winding etc.
Gap between winding section 21 and the first magnetic core 1, can be effectively reduced the assembling difficulty of current transformer, to be conducive to mention
High efficiency.
Fig. 3 is referred to, in embodiments of the present invention, in order to make structure rationalization, the top of the first rib support portion 22,
Several secondary coil lead pads 24, several primary coil pin pads 25 are equipped on the top of two rib support portions 23.?
Design plating pin pad, can effectively facilitate the automatic welding of wire rod and pin, realize from full-automatic on second magnetic core 2
Coiling is produced to lead welding full process automatization；Wherein, the pad electrode on the second magnetic core 2 makees the attachment of SMD body structure surface, energy
Enough there is better coplane degree.
In embodiments of the present invention, it should be noted that the first magnetic core 1, the second magnetic core 2 are magnetic ferrite magnetic core.
Soft magnetic materials includes nickel-zinc ferrite and manganese-zinc ferrite, and to ensure maximum operating temperature at 125 DEG C, Curie temperature Tc is necessary
Surpass 125 degrees Celsius.
In embodiments of the present invention, the first magnetic core 1 is in rectangular plate-like structure, and the section of the second magnetic core 2 is in I-shaped structure,
First magnetic core 1 is fixedly connected with the second magnetic core 2 by dispensing, is saved original structure dispensing fixed magnetic core and firm banking and is drawn
Foot inserts PIN needle process.In this way by the first magnetic core 1 of kneading and the second magnetic core 2, designed with chip ultrathin, but also with
The core structure of similar magnet ring class closure, the structure being bonded using two magnetic cores can have lower height dimension, while real
Now under the conditions of same electrical property product PCB encapsulate occupied space minimum.
In the present embodiment, preferably, primary coil 3 is copper foil winding, copper foil winding has good overcurrent energy
Power, while saving winding process and its production working hour.Two primary coil terminals for welding are connected on copper foil winding
Pin 31, the outside bending forming of the end of primary coil terminal pin 31 towards copper foil winding；Two primary coil terminals draw
Ipsilateral recline of foot 31 is welded on the first rib support portion 22 or the second rib support portion 23.
Continuing with referring to figs. 2 and 3, in the present embodiment one, the first magnetic core 1, the second magnetic core 2 use nickel-zinc ferrite material
Matter, the secondary coil lead pad of the bottom surface boss electrotinning of the second magnetic core 2, primary coil pin pad pull open spacing isolation,
Secondary coil 4 is wound on columnar center pillar winding section 21, and the lead of secondary coil 4 is welded on the bottom surface boss electricity of the second magnetic core 2
In tin plating secondary coil lead pad, while copper foil winding pin is also welded to the bottom surface boss electrotinning primary of the second magnetic core 2
On coil pin pad, coil windings are isolated with copper pool them pulls apart spacing, then again by 2 groups of the first magnetic core 1 and the second magnetic core
Dress, carries out an epoxy glue and fixes.
In embodiments of the present invention, as the copper foil winding of primary coil, pin bottom is used as pad portion, Ke Yigen
According to the different demands of R&D and production, design pin of various shapes to be applicable in various PCB encapsulation, copper moor winding can for it is Z-shaped,
U-shaped or Ω shape.And the coiling start lead of secondary coil 4 and end lead can be also possible to coiling and rise in same edge direction
The lead of beginning lead and end lead not on same one side namely secondary coil 4 is welded on 22/ second gear of the first rib support portion
In one of secondary coil lead pad 24 of side support portion 23, another lead of secondary coil 4 is welded on the first rib branch
In the another one secondary coil lead pad 24 of 22/ second rib support portion 23 of support part or a lead of secondary coil 4 welds
It connects in one of secondary coil lead pad 24 of the first rib support portion 22, another lead of secondary coil 4 is welded on
In one of secondary coil lead pad 24 of second rib support portion 23.Therefore, the present invention has various structures design side
Case is described in detail by following embodiment:
The embodiment of the present invention two:
Fig. 4 is referred to, on the basis of the embodiment of the present invention one, starting of the embodiment of the present invention two to the secondary windings
Terminal pin terminates terminal pin progress evolution, and connection relationship is as follows:
As shown in fig. 7, a wherein lead for secondary coil 4 is welded on the secondary coil lead pad of the first rib support portion
On, wherein another lead is welded in the secondary coil lead pad of the second rib support portion, so that the starting of secondary coil is drawn
Line, end lead are respectively welded at opposite sides；The first magnetic core 1, the second magnetic core 2, secondary coil 4 etc. are finally assembled into electric current
Mutual inductor.
The embodiment of the present invention three:
Fig. 5 is referred to, on the basis of the embodiment of the present invention one, pin of the embodiment of the present invention three to the copper foil winding
It improves, the two sides of copper foil winding are bent to form bending part 32, two bending parts 32 of copper foil winding towards the second magnetic core 2
Between the two sides and the first rib support portion 22, the second rib support portion 23 of center pillar winding section 21.
As shown in figure 8, the start lead of secondary coil 4 to be welded on to one of secondary wire of the second rib support portion 23
It encloses in lead pad 24, the end lead of secondary coil 4 is welded on the another one secondary coil of the second rib support portion 23
In lead pad 24, so that the start lead of secondary coil 4, end lead are welded on the same side；Finally by the first magnetic core 1,
Two magnetic cores 2, copper foil winding, secondary coil 4 etc. are assembled into current transformer as shown in Figure 8.
The embodiment of the present invention four:
Fig. 9 is referred to, on the basis of the embodiment of the present invention three, starting of the embodiment of the present invention four to the secondary windings
Line terminates lead progress evolution, and the secondary coil that a wherein lead for secondary coil 4 is welded on the first rib support portion draws
On wire bonding disk, wherein another lead is in the secondary coil lead pad of the second rib support portion.So that the starting of secondary coil
Lead, end lead are respectively welded at opposite sides；Finally by the first magnetic core 1, the second magnetic core 2, copper foil winding, secondary coil 4
Etc. being assembled into current transformer.
The embodiment of the present invention five:
Fig. 6 is referred to, on the basis of the embodiment of the present invention one, pin of the embodiment of the present invention five to the copper foil winding
It improves, the two sides of copper foil winding are bent to form bending part 32, two bending parts 32 of copper foil winding towards the second magnetic core 2
Between the two sides and the first rib support portion 22, the second rib support portion 23 of center pillar winding section 21, and each bending part 32
End turn down form folding portion 33 outward.
As shown in Figure 10, the start lead of secondary coil 4 is welded on the one of secondary of the second rib support portion 23
On coil lead pad 24, the end lead of secondary coil 4 is welded on the another one secondary wire of the second rib support portion 23
It encloses in lead pad 24, so that the start lead of secondary coil 4, end lead are welded on the same side；Finally by the first magnetic core 1,
Second magnetic core 2, copper foil winding, secondary coil 4 etc. are assembled into current transformer.
The embodiment of the present invention six:
Referring to Figure 11, on the basis of the embodiment of the present invention five, the embodiment of the present invention five plays the secondary windings
Initial line terminates lead progress evolution, and a wherein lead for secondary coil 4 is welded on the secondary coil of the first rib support portion
In lead pad, wherein another lead is welded in the secondary coil lead pad of the second rib support portion, so that secondary coil
Start lead, terminate lead be respectively welded at opposite sides；Finally by the first magnetic core 1, the second magnetic core 2, copper foil winding, secondary
Coil 4 etc. is assembled into current transformer.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of current transformer, which is characterized in that including ontology, the ontology includes the first magnetic core and the second magnetic core, described
Second magnetic core includes being wound with the center pillar winding section of secondary coil and rib support in the center pillar winding section being connected to described the
The first rib support portion, the second rib support portion on one magnetic core, the first rib support portion connect the center pillar winding section
One end and be fixed on the side of first magnetic core, the second rib support portion connects the other end of the center pillar winding section
And it is fixed on the other side of first magnetic core；Gap between the center pillar winding section and first magnetic core is equipped with primary line
Circle.
2. current transformer as described in claim 1, which is characterized in that the top of the first rib support portion, described
Several secondary coil lead pads, several primary coil pin pads are equipped on the top of two rib support portions.
3. current transformer as claimed in claim 1 or 2, which is characterized in that the primary coil is copper foil winding.
4. current transformer as claimed in claim 3, which is characterized in that be connected with two for welding on the copper foil winding
A primary coil terminal pin, the outside bending forming of the end of the primary coil terminal pin towards the copper foil winding；
It is on the ipsilateral pad for reclining and being welded on the first rib support portion of two primary coil terminal pins or described
On the pad of second rib support portion；Or
One of them described primary coil terminal pin reclines and is welded on the pad of the first rib support portion, wherein separately
One primary coil terminal pin reclines and is welded on the pad of the second rib support portion.
5. current transformer as claimed in claim 3, which is characterized in that the two sides of the copper foil winding are towards described second
Magnetic core is bent to form bending part, and two bending parts of the copper foil winding are in the two sides of the center pillar winding section and described
Between first rib support portion, the second rib support portion.
6. current transformer as claimed in claim 5, which is characterized in that the end of each bending part turns down to be formed outward
Folding portion.
7. current transformer as claimed in claim 2, which is characterized in that a lead of the secondary coil is welded on described
On a wherein grade coil lead pad for one rib support portion, another lead of the secondary coil is welded on the first gear
In wherein another secondary coil lead pad of side support portion；Or
One lead of the secondary coil is welded on a wherein grade coil lead pad for the second rib support portion, institute
Another lead for stating secondary coil is welded in wherein another secondary coil lead pad of the second rib support portion.
8. current transformer as claimed in claim 2, which is characterized in that a lead of the secondary coil is welded on described
On a wherein grade coil lead pad for one rib support portion, another lead of the secondary coil is welded on the second gear
On a wherein grade coil lead pad for side support portion.
9. current transformer as described in claim 1, which is characterized in that first magnetic core, second magnetic core are soft
Magnetic nickel-zinc ferrite or manganese-zinc ferrite core.
10. current transformer as described in claim 1, which is characterized in that first magnetic core is in rectangular plate-like structure, described
The section of second magnetic core is in I-shaped structure, and first magnetic core is fixedly connected with second magnetic core by dispensing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910705104.5A CN110310806B (en) | 2019-07-31 | 2019-07-31 | Current transformer |
| PCT/CN2020/074679 WO2021017454A1 (en) | 2019-07-31 | 2020-02-10 | Current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910705104.5A CN110310806B (en) | 2019-07-31 | 2019-07-31 | Current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110310806A true CN110310806A (en) | 2019-10-08 |
| CN110310806B CN110310806B (en) | 2021-07-09 |
Family
ID=68082688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910705104.5A Active CN110310806B (en) | 2019-07-31 | 2019-07-31 | Current transformer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110310806B (en) |
| WO (1) | WO2021017454A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112992475A (en) * | 2021-02-18 | 2021-06-18 | 奇力新电子股份有限公司 | Current transformer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100182117A1 (en) * | 2009-01-22 | 2010-07-22 | Xinke Wu | High Frequency Magnetic Current Transducer |
| US20180374632A1 (en) * | 2017-06-23 | 2018-12-27 | Tdk Corporation | Pulse transformer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10149927A (en) * | 1996-11-18 | 1998-06-02 | Tokin Corp | Electronic part |
| CN209980935U (en) * | 2019-07-31 | 2020-01-21 | 东莞铭普光磁股份有限公司 | Current transformer |
-
2019
- 2019-07-31 CN CN201910705104.5A patent/CN110310806B/en active Active
-
2020
- 2020-02-10 WO PCT/CN2020/074679 patent/WO2021017454A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100182117A1 (en) * | 2009-01-22 | 2010-07-22 | Xinke Wu | High Frequency Magnetic Current Transducer |
| US20180374632A1 (en) * | 2017-06-23 | 2018-12-27 | Tdk Corporation | Pulse transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112992475A (en) * | 2021-02-18 | 2021-06-18 | 奇力新电子股份有限公司 | Current transformer |
| CN112992475B (en) * | 2021-02-18 | 2023-03-14 | 奇力新电子股份有限公司 | Current transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021017454A1 (en) | 2021-02-04 |
| CN110310806B (en) | 2021-07-09 |
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