CN103383401A - External interference compensation method for U-shaped printed circuit board (PCB) coil tong head - Google Patents
External interference compensation method for U-shaped printed circuit board (PCB) coil tong head Download PDFInfo
- Publication number
- CN103383401A CN103383401A CN2013102917010A CN201310291701A CN103383401A CN 103383401 A CN103383401 A CN 103383401A CN 2013102917010 A CN2013102917010 A CN 2013102917010A CN 201310291701 A CN201310291701 A CN 201310291701A CN 103383401 A CN103383401 A CN 103383401A
- Authority
- CN
- China
- Prior art keywords
- coil
- pcb
- binding clip
- terminals
- shaped
- 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.)
- Granted
Links
Images
Abstract
The invention discloses an external interference compensation method for a U-shaped printed circuit board (PCB) coil tong head. The external interference compensation method is characterized by comprising a first step of arranging the U-shaped PCB coil tong head; a second step of arranging two compensation coils, and enabling the coil winding directions of the two compensation coils to be identical; a third step of enabling the compensation coils in the second step to be fixed on two end faces of the U-shaped PCB coil tong head in the first step; a fourth step of when measuring induced voltage, enabling a closed-loop coil formed by the U-shaped PCB coil tong head to be divided into a left coil part and a right coil part to be in series connection in the same winding direction; and a fifth step of when an interference source exists externally, by adjusting the cross section area of the compensation coils or coil turns, enabling induced voltage U3' generated by the compensation coils and induced voltage U1' or U2' generated on a random side of the closed-loop coil formed by the U-shaped PCB coil tong head to be equal to induced voltage U2' or U1' on the other side, and achieving compensation.
Description
Technical field
The present invention relates to the electromagnetic induction voltage fields of measurement, be specifically related to the external disturbance compensation method for the U-shaped PCB coil binding clip of measuring induced voltage.
Background technology
Traditional mutual inductor coil is all generally enameled wire to be wound on the iron core of rigidity, consists of on the flexible pipe of non magnetic skeleton or flexibility.Increase induced voltage in order to improve coefficient of mutual inductance, generally can be on skeleton when coiling the enameled wire of coiling multilayer repeatedly back and forth, to increase the number of turn of coil.Such method can be brought following problems:
The cross-sectional area of every layer line circle and line length disunity.The coil of innermost layer is directly to be wound on skeleton, so the cross-sectional area of innermost layer coil is exactly the cross-sectional area of skeleton.And outer field coil is to be wound on the basis of inner coil, therefore must consider the thickness of inner coil when calculating its cross-sectional area.So just cause much more often around one deck coil, its cross-sectional area is the thickness that increase one deck coils just more, and outer field coil, and the individual layer line length also can be longer.When the assessment coil mutual inductance, the cross-sectional area of every layer line circle and line length disunity will bring error.
Because outer coil directly is wound on inner coil, between two-layer coil, distance is very near, causes can having larger stray capacitance between layers, and the number of plies is more, and stray capacitance is also just larger.These stray capacitances can reduce frequency response and the bandwidth of coil, and deviation appears in the voltage signal and the tested current signal that cause inducing.Measuring the occasion of variable signal fast such as thunder-strike current and surge current especially, the impact of stray capacitance is more obvious.
U-shaped PCB coil binding clip, because its opening is larger, so antijamming capability is relatively poor, tends to exist error in measuring process, so need to compensate its induced voltage.
Summary of the invention
The objective of the invention is to provide for the deficiencies in the prior art the external disturbance compensation method of U-shaped PCB coil binding clip, by two end faces at U-shaped PCB coil binding clip, compensating coil is set respectively, and the direction of circling of compensating coil, identical with the direction of circling of the formed closed loop coil of U-shaped PCB coil binding clip, the fundamental theorem of combined magnetic field, thus realize measuring error is compensated.
The technical scheme that the present invention adopts for achieving the above object is:
The external disturbance compensation method of U-shaped PCB coil binding clip, it comprises the following steps:
(1) a U-shaped PCB coil binding clip is set;
(2) two compensating coils are set, and its coil direction of circling is identical;
(3) with the described compensating coil of step (2), be fixed on two end faces of the described U-shaped PCB coil binding clip of step (1);
(4) when measuring induced voltage, with the formed closed loop coil of U-shaped PCB coil binding clip, be divided into left and right two parts coil and connect with identical direction of circling, and the induced voltage that produces is respectively U
1And U
2, and two compensating coils are a coil of mutually connecting, and the induced voltage that produces is U
3, measuring voltage is U
1, U
2And U
3Sum;
(5) when there is interference source in the outside, by adjusting cross-sectional area or the coil turn of compensating coil, the induced voltage U that compensating coil is produced
3', add any one side of the formed closed loop coil of U-shaped PCB coil binding clip, the induced voltage U of generation
1' or U
2', equal the induced voltage U of another side
2' or U
1', thereby the interference voltage of outside is reduced to zero, realize compensation.
When U-shaped coil is in when being subjected to the external disturbance state, we are with being positioned over outside jaw, and the electrified wire on the coil left side is used as external interference source.By the main field theorem as can be known this moment the right and left coil induced voltage inversely add.But because left half of coil is nearer to the distance of electrified wire than right half of coil, the magnetic field in left half of coil is stronger, therefore the coil-induced voltage U of left one side of something
1Absolute value will be greater than the coil-induced voltage U of right one side of something
2Absolute value, the induced voltage of both sides coil can not be offset fully, so have:
|U|＝|U
1+U
2|＝|U
1|-|U
2|
Obviously induce in coil this moment | U| does not equal zero, and this induced voltage to be exactly U-shaped coil disturbed by outer lead and the interference voltage introduced.When normal the measurement, if the outside of binding clip has in the situation that other electrified wire disturbs, interference voltage will be added on normal measuring voltage, thus the error of causing.
When the U-shaped coil that increases compensating coil is in when being subjected to the external disturbance state.By the main field theorem as can be known, the induced voltage U of U-shaped coil
2With U
3With superimposed, and U
1With U
2, U
3Inversely add, so have:
|U|′＝|U
1′+U
2′+U
3′|＝||U
1′|-(|U
2′|+|U
3′|)|
In order to offset interference, must be this moment | U ' | be decreased to 0.When there is no compensating coil, the U in following formula
3Be 0, due to | U
1' | forever greater than | U
2' |, interference voltage | U ' | may be 0 never.And after compensating coil had been arranged, the parameters such as the cross-sectional area by adjusting compensating coil or the number of turn made the induced voltage U of compensating coil
3' add the induced voltage U of upper right half of coil
2' just in time can offset the induced voltage U of left half of coil
1, namely | U
1' |=| U
2' |+| U
3' |, just can be reduced to 0 to the interference voltage from the binding clip outside, thereby realize the purpose of compensation.
The described U-shaped PCB coil binding clip of step (1) comprises the basic binding clip of a plurality of PCB coils pair; The basic binding clip of described PCB coil is to superimposed, and fixing; With the basic binding clip of PCB coil pair after stack, the mutual electric connection of the terminals by the PCB coil is connected.
Described PCB binding clip is to comprising two PCB coils, and closed loop coil that detours along clockwise direction of described PCB coil, a closed loop coil that detours in the counterclockwise direction; Described two PCB coils are superimposed, and wherein, the PCB coil that detours along clockwise direction is above the PCB coil that detours in the counterclockwise direction; Wherein, the terminals of top PCB coil are terminals A
1With terminals B
1, the terminals of below PCB coil are terminals A
2With terminals B
2The terminals B of two PCB coils after stack is electrically connected.
The terminals A that the basic binding clip of PCB coil is right
2, the terminals A right to the basic binding clip of PCB coil of bottom with being positioned at the basic binding clip of this PCB coil
1Be electrically connected, with the basic binding clip of each PCB coil to series connection, the right terminals A of the basic binding clip of PCB coil of the superiors
1The terminals A right with the basic binding clip of undermost PCB coil
2, be the terminals of this PCB binding clip.
Described PCB coil comprises a single-layer double-side PCB circuit board; On described PCB circuit board, be provided with a plurality of via holes, and the double ordered arrangement in described via hole medial and lateral; At upper surface and the lower surface of described PCB circuit board, carry out respectively the etching wiring; Be filled with conductive material in described via hole, this via hole electrically conducts two-sided PCB circuit board by electroplating heavy copper, and (via hole sinks the copper conducting by platings, makes copper wire electric connection up and down; On the surface of connecting up, be coated with matcoveredn rosin, via hole top, inside and outside both sides or end lead to respectively terminals A and terminals B at the upper surface of pcb board.
The upper surface of described PCB circuit board, from via hole top, inside and outside both sides, the outside the first via hole connects inboard the second via hole, or the second via hole outside inboard the first via hole connection, then is linked in sequence successively; The lower surface of PCB circuit board, from via hole top, inside and outside both sides, inboard the first via hole is connected with the outside the first via hole, then is linked in sequence successively.
The described compensating coil of step (2) is made of on rigid backbone enameled wire, and each compensating coil comprises the coil that at least one is coiled into by enameled wire; When comprising two or more coil, each coil is connected in series with identical direction of circling.
In step (3), described compensating coil laterally is fixed on two end faces of described U-shaped PCB coil binding clip, and the direction of circling of compensating coil, and is identical with the direction of circling of the formed closed loop coil of U-shaped PCB coil binding clip.
The invention has the beneficial effects as follows: by two end faces at U-shaped PCB coil binding clip, compensating coil is set respectively, and the direction of circling of compensating coil, identical with the direction of circling of the formed closed loop coil of U-shaped PCB coil binding clip, the fundamental theorem of combined magnetic field, thus realize measuring error is compensated.
Description of drawings
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is Fig. 1 circuit diagram;
Fig. 3 is U-shaped PCB coil tong head schematic diagram;
Fig. 4 is U-shaped PCB loop construction schematic diagram.
In figure: 1.U type PCB coil binding clip 2. compensating coil 3.PCB coil 4. terminals A
15. terminals B
16. terminals A
27. terminals B
28. via hole 9. copper wire 10. terminals A 11. inboard first via hole 15. outside the second via hole 16. enameled wires of the terminals B12. outside inboard the second via hole 14. of the first via hole 13.
Embodiment
Embodiment: referring to Fig. 1 to Fig. 4, the external disturbance compensation method of the U-shaped PCB coil binding clip that the present embodiment provides, it comprises the following steps:
(1) a U-shaped PCB coil binding clip 1 is set;
(2) two compensating coils 2 are set, and its coil direction of circling is identical;
(3) with the described compensating coil 2 of step (2), be fixed on two end faces of the described U-shaped PCB coil binding clip 1 of step (1);
(4) when measuring induced voltage, with U-shaped PCB coil binding clip 1 formed closed loop coil, be divided into left and right two parts coil and connect with identical direction of circling, and the induced voltage that produces is respectively U
1And U
2, and two compensating coils are a coil of mutually connecting, and the induced voltage that produces is U
3, measuring voltage is U
1, U
2And U
3Sum;
(5) when there is interference source in the outside, by adjusting cross-sectional area or the coil turn of compensating coil, the induced voltage U that compensating coil is produced
3', add any one side of U-shaped PCB coil binding clip 1 formed closed loop coil, the induced voltage U of generation
1' or U
2', equal the induced voltage U of another side
2' or U
1', thereby the interference voltage of outside is reduced to zero, realize compensation.
When U-shaped coil is in when being subjected to the external disturbance state, with being positioned over outside jaw, the electrified wire on the coil left side is used as external interference source.By the main field theorem as can be known this moment the right and left coil induced voltage inversely add.But because left half of coil is nearer to the distance of electrified wire than right half of coil, the magnetic field in left half of coil is stronger, therefore the coil-induced voltage U of left one side of something
1Absolute value will be greater than the coil-induced voltage U of right one side of something
2Absolute value, the induced voltage of both sides coil can not be offset fully, so have:
|U|＝|U
1+U
2|＝|U
1|-|U
2|
Obviously induce in coil this moment | U| does not equal zero, and this induced voltage to be exactly U-shaped coil disturbed by outer lead and the interference voltage introduced.When normal the measurement, if the outside of binding clip has in the situation that other electrified wire disturbs, interference voltage will be added on normal measuring voltage, thus the error of causing.
When the U-shaped coil that increases compensating coil is in when being subjected to the external disturbance state.By the main field theorem as can be known, the induced voltage U of U-shaped coil
2With U
3With superimposed, and U
1With U
2, U
3Inversely add, so have:
|U|′＝|U
1′+U
2′+U
3′|＝||U
1′|-(|U
2′|+|U
3′|)|
In order to offset interference, must be this moment | U ' | be decreased to 0.When there is no compensating coil, the U in following formula
3Be 0, due to | U
1' | forever greater than | U
2' |, interference voltage | U ' | may be 0 never.And after compensating coil had been arranged, the parameters such as the cross-sectional area by adjusting compensating coil or the number of turn made the induced voltage U of compensating coil
3' add the induced voltage U of upper right half of coil
2' just in time can offset the induced voltage U of left half of coil
1, namely | U
1' |=| U
2' |+| U
3' |, just can be reduced to 0 to the interference voltage from the binding clip outside, thereby realize the purpose of compensation.
The described U-shaped PCB coil binding clip 1 of step (1) comprises the basic binding clip of a plurality of PCB coils pair; The basic binding clip of described PCB coil is to superimposed, and fixing; With the basic binding clip of PCB coil pair after stack, the mutual electric connection of the terminals by the PCB coil is connected.
The basic binding clip of described PCB coil is to comprising two PCB coils 3, and 3 one closed loop coil that detour along clockwise direction of described PCB coil, a closed loop coil that detours in the counterclockwise direction; Described two PCB coils 3 are superimposed, and wherein, the PCB coil 3 that detours along clockwise direction is above the PCB coil 3 that detours in the counterclockwise direction; Wherein, the terminals of top PCB coil are terminals A
14 and terminals B
15, the terminals of below PCB coil 3 are terminals A
26 and terminals B
27; The terminals B of two PCB coils 1 after stack is electrically connected.
The terminals A that the basic binding clip of PCB coil is right
26, the terminals A right to the basic binding clip of PCB coil of bottom with being positioned at the basic binding clip of this PCB coil
14 are electrically connected, with the basic binding clip of each PCB coil to series connection, the right terminals A of the basic binding clip of PCB coil of the superiors
1The 4 terminals As right with the basic binding clip of undermost PCB coil
26, be the terminals of this PCB binding clip.
Described PCB coil comprises a single-layer double-side PCB circuit board; On described PCB circuit board, be provided with a plurality of via holes 8, and the described via hole 8 double ordered arrangements in medial and lateral; At upper surface and the lower surface of described PCB circuit board, carry out respectively the etching wiring; Be filled with conductive material in described via hole 8, this via hole electrically conducts two-sided PCB circuit board by electroplating heavy copper, and up and down copper wire 9 is electrically connected; On the surface of connecting up, be coated with matcoveredn rosin, via hole 8 tops, inside and outside both sides or end lead to respectively terminals A10 and terminals B11 at the upper surface of pcb board.
The upper surface of described PCB circuit board, from via hole 8 tops, inside and outside both sides, the outside the first via hole 12 connects inboard the second via hole 13, or the second via hole 15 outside inboard the first via hole 14 connections, then is linked in sequence successively; The lower surface of PCB circuit board, from via hole top, inside and outside both sides, inboard the first via hole 14 is connected with the outside the first via hole 12, then is linked in sequence successively.
The described compensating coil of step (2) is made of on rigid backbone enameled wire 16, and each compensating coil 2 comprises the coil that at least one is coiled into by enameled wire 16; When comprising two or more coil, each coil is connected in series with identical direction of circling.
In step (3), described compensating coil 2 laterally is fixed on two end faces of described U-shaped PCB coil binding clip 1, and the direction of circling of compensating coil 2, and is identical with the direction of circling of U-shaped PCB coil binding clip 1 formed closed loop coil.
But the above is only better possible embodiments of the present invention, is not to limit to the scope of the claims of the present invention, therefore the equivalent structure that all utilizations instructions of the present invention and accompanying drawing content are done changes, all is included in protection scope of the present invention.
Claims (8)
1.U the external disturbance compensation method of type PCB coil binding clip is characterized in that, it comprises the following steps:
(1) a U-shaped PCB coil binding clip is set;
(2) two compensating coils are set, and its coil direction of circling is identical;
(3) with the described compensating coil of step (2), be fixed on two end faces of the described U-shaped PCB coil binding clip of step (1);
(4) when measuring induced voltage, with the formed closed loop coil of U-shaped PCB coil binding clip, be divided into left and right two parts coil and connect with identical direction of circling, and the induced voltage that produces is respectively U
1And U
2, and two compensating coils are a coil of mutually connecting, and the induced voltage that produces is U
3, measuring voltage is U
1, U
2And U
3Sum;
(5) when there is interference source in the outside, by adjusting cross-sectional area or the coil turn of compensating coil, the induced voltage U that compensating coil is produced
3', add any one side of the formed closed loop coil of U-shaped PCB coil binding clip, the induced voltage U of generation
1' or U
2', equal the induced voltage U of another side
2' or U
1', thereby the interference voltage of outside is reduced to zero, realize compensation.
2. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 1, is characterized in that, the described U-shaped PCB coil binding clip of step (1) comprises the basic binding clip of a plurality of PCB coils pair; The basic binding clip of described PCB coil is to superimposed, and fixing; With the basic binding clip of PCB coil pair after stack, the mutual electric connection of the terminals by the PCB coil is connected.
3. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 2, it is characterized in that, described PCB binding clip is to comprising two PCB coils, and closed loop coil that detours along clockwise direction of described PCB coil, a closed loop coil that detours in the counterclockwise direction; Described two PCB coils are superimposed, and wherein, the PCB coil that detours along clockwise direction is above the PCB coil that detours in the counterclockwise direction; Wherein, the terminals of top PCB coil are terminals A
1With terminals B
1, the terminals of below PCB coil are terminals A
2With terminals B
2The terminals B of two PCB coils after stack is electrically connected.
4. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 3, is characterized in that, the terminals A that the basic binding clip of PCB coil is right
2, the terminals A right to the basic binding clip of PCB coil of bottom with being positioned at the basic binding clip of this PCB coil
1Be electrically connected, with the basic binding clip of each PCB coil to series connection, the right terminals A of the basic binding clip of PCB coil of the superiors
1The terminals A right with the basic binding clip of undermost PCB coil
2, be the terminals of this PCB binding clip.
5. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 3, is characterized in that, described PCB coil comprises a single-layer double-side PCB circuit board; On described PCB circuit board, be provided with a plurality of via holes, and the double ordered arrangement in described via hole medial and lateral; At upper surface and the lower surface of described PCB circuit board, carry out respectively the etching wiring; Be filled with conductive material in described via hole, this via hole electrically conducts two-sided PCB circuit board by electroplating heavy copper, and the up and down copper wire is electrically connected; On the surface of connecting up, be coated with matcoveredn rosin, via hole top, inside and outside both sides or end lead to respectively terminals A and terminals B at the upper surface of pcb board.
6. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 5, it is characterized in that, the upper surface of described PCB circuit board, from via hole top, inside and outside both sides, the outside the first via hole connects inboard the second via hole, or the second via hole outside inboard the first via hole connection, then be linked in sequence successively; The lower surface of PCB circuit board, from via hole top, inside and outside both sides, inboard the first via hole is connected with the outside the first via hole, then is linked in sequence successively.
7. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 1, it is characterized in that, the described compensating coil of step (2) is made of on rigid backbone enameled wire, and each compensating coil comprises the coil that at least one is coiled into by enameled wire; When comprising two or more coil, each coil is connected in series with identical direction of circling.
8. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 1, it is characterized in that, in step (3), described compensating coil laterally is fixed on two end faces of described U-shaped PCB coil binding clip, and the direction of circling of compensating coil is identical with the direction of circling of the formed closed loop coil of U-shaped PCB coil binding clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291701.0A CN103383401B (en) | 2013-07-11 | 2013-07-11 | The external disturbance compensation method of U-shaped PCB coil binding clip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291701.0A CN103383401B (en) | 2013-07-11 | 2013-07-11 | The external disturbance compensation method of U-shaped PCB coil binding clip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103383401A true CN103383401A (en) | 2013-11-06 |
| CN103383401B CN103383401B (en) | 2015-09-09 |
Family
ID=49491246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310291701.0A Active CN103383401B (en) | 2013-07-11 | 2013-07-11 | The external disturbance compensation method of U-shaped PCB coil binding clip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103383401B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579632A (en) * | 2018-06-08 | 2019-12-17 | 共立电气计器株式会社 | Clamp-on sensor and clamp-on ammeter |
| CN113436856A (en) * | 2021-06-11 | 2021-09-24 | 优利德科技(中国)股份有限公司 | Hollow coil sensing complementary device, pincerlike multimeter and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5049844A (en) * | 1990-05-16 | 1991-09-17 | Beta Mfg. Co. | Enclosed electromagnetic relay |
| CN2136473Y (en) * | 1992-07-30 | 1993-06-16 | 蔡冰 | Clamp-on tester |
| WO1999001773A1 (en) * | 1997-07-04 | 1999-01-14 | Liaisons Electroniques-Mecaniques Lem S.A. | Electric current pick-up shoe |
| CN202134392U (en) * | 2011-06-10 | 2012-02-01 | 四川泰克电器有限公司 | Current transformer |
| CN202871546U (en) * | 2012-07-26 | 2013-04-10 | 北京中凯科电电力技术有限公司 | Current transformer |
-
2013
- 2013-07-11 CN CN201310291701.0A patent/CN103383401B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5049844A (en) * | 1990-05-16 | 1991-09-17 | Beta Mfg. Co. | Enclosed electromagnetic relay |
| CN2136473Y (en) * | 1992-07-30 | 1993-06-16 | 蔡冰 | Clamp-on tester |
| WO1999001773A1 (en) * | 1997-07-04 | 1999-01-14 | Liaisons Electroniques-Mecaniques Lem S.A. | Electric current pick-up shoe |
| CN202134392U (en) * | 2011-06-10 | 2012-02-01 | 四川泰克电器有限公司 | Current transformer |
| CN202871546U (en) * | 2012-07-26 | 2013-04-10 | 北京中凯科电电力技术有限公司 | Current transformer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579632A (en) * | 2018-06-08 | 2019-12-17 | 共立电气计器株式会社 | Clamp-on sensor and clamp-on ammeter |
| CN113436856A (en) * | 2021-06-11 | 2021-09-24 | 优利德科技(中国)股份有限公司 | Hollow coil sensing complementary device, pincerlike multimeter and preparation method thereof |
| CN113436856B (en) * | 2021-06-11 | 2022-10-11 | 优利德科技(中国)股份有限公司 | Hollow coil sensing complementary device, pincerlike multimeter and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103383401B (en) | 2015-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6812140B2 (en) | Coil parts | |
| US8937522B2 (en) | Transformer device | |
| US9666354B2 (en) | Transformer | |
| CN101178417A (en) | High-precision rogowski current transformer | |
| CN104979072A (en) | Coil component | |
| US10128325B2 (en) | Inductor structures for integrated circuits | |
| CN109686540A (en) | Capacitive voltage conversion device | |
| JPWO2016079903A1 (en) | Common mode noise filter | |
| MX2014003970A (en) | Current sensor based on a rogowski coil. | |
| JP2016006816A (en) | Transformer and multilayer substrate | |
| JP2010101871A (en) | Current sensor | |
| CN103383401B (en) | The external disturbance compensation method of U-shaped PCB coil binding clip | |
| CN109686549B (en) | Integrated transformer with multiple winding coils manufactured through micro-nano processing | |
| CN201311811Y (en) | Common mode filter | |
| JP2017076641A (en) | Power supply device | |
| CN103747627A (en) | Method for manufacturing inductance device by using printed circuit board | |
| JPWO2017141681A1 (en) | Voltage detection device, power supply device, and power transmission device | |
| US20190043650A1 (en) | Winding coil component | |
| KR20170090800A (en) | Coil electronic component | |
| JP2017034115A (en) | Printed circuit board | |
| CN103369856B (en) | The preparation method of a kind of PCB coil binding clip and PCB coil binding clip | |
| CN104752018A (en) | Common mode filter | |
| US9111678B2 (en) | Planar core-type uniform external field equalizer and fabrication | |
| Lope et al. | Minimization of vias in PCB implementations of planar coils with litz-wire structure | |
| CN103384456A (en) | Manufacturing method of printed circuit board (PCB) coil and PCB coil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 523808 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee after: Uno Technology (China) Limited by Share Ltd Address before: 523808 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee before: Uni-Trend Technology (China) Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |