CN103632805B - Variable coupling inducer - Google Patents
Variable coupling inducer Download PDFInfo
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- CN103632805B CN103632805B CN201210298002.4A CN201210298002A CN103632805B CN 103632805 B CN103632805 B CN 103632805B CN 201210298002 A CN201210298002 A CN 201210298002A CN 103632805 B CN103632805 B CN 103632805B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
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- 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
- H01F38/14—Inductive couplings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F2003/106—Magnetic circuits using combinations of different magnetic materials
Abstract
The invention discloses a kind of variable coupling inducer, including the first core, two wires, the second core and magnetic texure.First core includes 2 first protuberances, the second protuberance and two metallic channels, and wherein the second protruding parts is between 2 first protuberances, and each metallic channel lays respectively between one of them and the second protuberance of 2 first protuberances.Each wire be respectively arranged at two metallic channels one of them in.Second core is arranged on the first core.It is formed between the first gap, and the second protuberance and the second core between each the first protuberance and second core and is formed with the second gap.Magnetic texure is arranged between the second protuberance and the second core, and magnetic texure is symmetric relative to the center line of the second protuberance.The present invention can improve the initial sensibility reciprocal of variable coupling inducer by this magnetic texure, thus improves light-load efficiency.
Description
Technical field
The present invention relates to a kind of variable coupling inducer, particularly relate to a kind of variable coupling inducer that can simultaneously improve underloading and heavy duty efficiency.
Background technology
Coupling inductor has developed a period of time, but the most rarely needed at circuit board.Along with more powerful computer microprocessor needs high electric current on little circuit board, coupling inductor is the most little by little used in circuit board.Coupling inductor can be used for reducing the total amount of the circuit board space spent by traditional inductor.At present, have shown that coupling inductor can significantly decrease ripple current (ripplecurrent), and allowed the capacitor that use is less, to save the space of circuit board.Owing to the D.C. resistance (directcurrentresistance, DCR) of coupling inductor is low, can there is preferable efficiency when heavy duty.But, owing to coupling inductor is that the magnetic flux of two-conductor line is offseted by the mode utilizing coupling, this can make the sensibility reciprocal step-down of underloading, and the deterioration of efficiency of underloading.
Summary of the invention
The technical problem to be solved is: in order to make up the deficiencies in the prior art, it is provided that a kind of variable coupling inducer that can simultaneously improve underloading and heavy duty efficiency, to solve the problems referred to above.
The variable coupling inducer of the present invention is by the following technical solutions:
Described variable coupling inducer includes the first core, two wires, the second core and magnetic texure.Described first core includes 2 first protuberances, the second protuberance and two metallic channels, wherein said second protruding parts is between described 2 first protuberances, and each described metallic channel lays respectively between one of them and described second protuberance of described 2 first protuberances.Each described wire be respectively arranged at described two metallic channels one of them in.Described second core is arranged on described first core.It is formed between the first gap, and described second protuberance and described second core between each described first protuberance and described second core and is formed with the second gap.Described magnetic texure is arranged between described second protuberance and described second core, and described magnetic texure is symmetric relative to the center line of described second protuberance.
The vertical dimension in described first gap is less than the vertical dimension in described second gap.
Described variable coupling inducer has overall height H, and the vertical dimension in described first gap is between 0.0073H and 0.0492H, and the vertical dimension in described second gap is between 0.0196H and 0.1720H.
Described magnetic texure has the first magnetic permeability mu 1, and described first gap has the second magnetic permeability mu 2, and described second gap has the 3rd magnetic permeability mu 3, and the relation of described first permeability to described 3rd permeability is μ 1 > μ 2 μ 3.
Described first core has the 4th magnetic permeability mu 4, and described second core has the 5th magnetic permeability mu 5, and the relation of described first permeability to described 5th permeability is μ 1 μ 4 > μ 2 μ 3 and μ 1 μ 5 > μ 2 μ 3.
In the scope that the vertical dimension of bottom surface extremely described second core that described first gap and described second gap are all located at described metallic channel is contained.
Described magnetic texure is one-body molded with described first core.
Described magnetic texure is one-body molded with described second core.
Described magnetic texure includes that at least one fragment, described at least one fragment are symmetric relative to the center line of described second protuberance.
Two ends of described magnetic texure completely attach to described first core and described second core respectively.
Described magnetic texure has first surface and amasss A1, described second protuberance has second surface and amasss A2, the first sensibility reciprocal L1 is recorded under the first electric current I1, the second sensibility reciprocal L2 is recorded under the second electric current I2,1.21 (I1/I2) A1/A2 0.81 (I1/I2), and 0.8L1 L2 0.7L1.
Add at described first electric current I1 and under 1 ampere, record the 3rd sensibility reciprocal L3, and 5.5nH L1-L3 4.5nH.
Described first gap is non-magnetic gap, and described second gap is air gap or non-magnetic gap.
Therefore, according to technique scheme, the variable coupling inducer of the present invention at least has following advantages and beneficial effect: the present invention arranges magnetic texure between the second protuberance and the second core in the middle of the first core, and make this magnetic texure be symmetric relative to the center line of the second protuberance, to be improved the initial sensibility reciprocal of variable coupling inducer by this magnetic texure, thus improve light-load efficiency.Additionally, the variable coupling inducer of the present invention can reach high saturation current with Ferrite (ferrite) as material, and use copper sheet to work as electrode to reduce D.C. resistance, therefore can have preferable efficiency in heavy duty.In other words, the variable coupling inducer of the present invention can improve underloading and heavy duty efficiency simultaneously.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of the variable coupling inducer of one embodiment of the invention.
Fig. 2 is the axonometric chart that the variable coupling inducer in Fig. 1 removes the second core.
Fig. 3 is the axonometric chart of the first core in Fig. 2 and magnetic texure.
Fig. 4 is the side view that the variable coupling inducer in Fig. 1 removes two wires.
Fig. 5 is the graph of a relation measuring sensibility reciprocal and the electric current obtained with the variable coupling inducer in Fig. 1.
Fig. 6 is first core axonometric chart with magnetic texure of another embodiment of the present invention.
Fig. 7 is first core axonometric chart with magnetic texure of another embodiment of the present invention.
Fig. 8 is first core axonometric chart with magnetic texure of another embodiment of the present invention.
Wherein, description of reference numerals is as follows:
1 variable coupling inducer 10 first core
12 wire 14 second cores
16,16 ', 16 ", magnetic texure 100 first protuberance
16″′
102 second protuberance 104 metallic channels
160,162 fragment 1040 bottom surface
G1 the first clearance G 2 second gap
CL center line D1, D2, D3 vertical dimension
H total height A, B point
X, X3, X4, length Y1, Y2, Y3, width
X5Y4、Y5
Detailed description of the invention
Refer to Fig. 1 to Fig. 4, Fig. 1 is the axonometric chart of the variable coupling inducer 1 of one embodiment of the invention, Fig. 2 is the axonometric chart that the variable coupling inducer 1 in Fig. 1 removes the second core 14, Fig. 3 is the axonometric chart of the first core 10 in Fig. 2 and magnetic texure 16, and Fig. 4 is the side view that the variable coupling inducer 1 in Fig. 1 removes two wires 12.As shown in Figures 1 to 4, variable coupling inducer 1 includes the first core 10, two wire the 12, second core 14 and magnetic texure 16.First core 10 includes 2 first protuberance the 100, second protuberance 102 and two metallic channels 104, wherein the second protuberance 102 is between 2 first protuberances 100, and each metallic channel 104 lays respectively between one of them and the second protuberance 102 of 2 first protuberances 100.In other words, the second protuberance 102 is positioned at the middle part of the first core 10.Each wire 12 be respectively arranged at two metallic channels 104 one of them in.Second core 14 is arranged on the first core 10 so that is formed between the first clearance G 1, and the second protuberance 102 and the second core 14 between each the first protuberance 100 and second core 14 and is formed with the second clearance G 2.Magnetic texure 16 is arranged between the second protuberance 102 and the second core 14, and magnetic texure 16 is symmetric, as shown in Figure 3 and Figure 4 relative to the center line CL of the second protuberance 102.
Owing to the second protuberance 102 is positioned at the middle part of the first core 10, and magnetic texure 16 is arranged between the second protuberance 102 and the second core 14, and therefore after variable coupling inducer 1 completes, magnetic texure 16 is positioned at the middle part of variable coupling inducer 1.Additionally, two ends of magnetic texure 16 completely attach to the first core 10 and the second core 14 respectively.In the present embodiment, magnetic texure 16 is in strip, but is not limited.In the present embodiment, magnetic texure 16 is one-body molded with the first core 10, but is not limited.The material of first core the 10, second core 14 or magnetic texure 16 can be iron powder, Ferrite, permanent magnet or other magnetic material.Owing to the first core 10 is one-body molded with magnetic texure 16, so the first core 10 is identical with the material of magnetic texure 16.In another embodiment, magnetic texure 16 can also be one-body molded with the second core 14, and now, the second core 14 is identical with the material of magnetic texure 16.In another embodiment, magnetic texure 16 can also be stand-alone assembly, and now, magnetic texure 16 may be the same or different with the material of first core the 10, second core 14.It should be noted that, if because of manufacturing tolerance magnetic texure 16 cannot be completely attached to the first core 10 and the second core 14 time, Magnetic adhesive (such as, the magnetic solid of insulating resin and Magnaglo) can be inserted at gap.
In the present embodiment, vertical dimension D1 of the first clearance G 1 is less than vertical dimension D2 of the second clearance G 2.First clearance G 1 can be air gap, magnetic gap or non-magnetic gap, and the second clearance G 2 can also be air gap, magnetic gap or non-magnetic gap, can design according to reality application.It should be noted that, air gap is to carry out, with air, the gap that completely cuts off, and it does not contains other material, owing to the magnetic resistance of air is relatively big, can increase inductance saturation；Magnetic gap is filling magnetic material in gap, to reduce magnetic resistance, so that inductance sensibility reciprocal increases；Non-magnetic gap is to fill nonmagnetic substance than air in gap, to promote the function that air gap cannot be reached, such as, fills and combines glue, so that different magnetic materials combines.Preferably, the first clearance G 1 can be with right and wrong magnetic gap, and the second clearance G 2 can be air gap or non-magnetic gap.
In the present embodiment, after variable coupling inducer 1 completes, variable coupling inducer 1 has overall height H, and vertical dimension D1 of the first clearance G 1 can be between 0.0073H and 0.0492H, and vertical dimension D2 of the second clearance G 2 can be between 0.0196H and 0.1720H.Additionally, as shown in Figure 4, in the scope that vertical dimension D3 of bottom surface 1040 to the second core 14 that the first clearance G 1 and the second clearance G 2 are all located at metallic channel 104 is contained.In other words, from the point of view of the side view shown in Fig. 4, the first clearance G 1 and the second clearance G 2 are no greater than and are not less than vertical dimension D3 of bottom surface 1040 to the second core 14 of metallic channel 104.In reality is applied, the first clearance G 1 produces main sensibility reciprocal, and the second clearance G 2 produces leakage inductance (leakageinductance).
In the present embodiment, magnetic texure 16 has the first magnetic permeability mu 1, and the first clearance G 1 has the second magnetic permeability mu 2, and the second clearance G 2 has the 3rd magnetic permeability mu 3, and wherein the relation of the first permeability to the 3rd permeability is μ 1 > μ 2 μ 3.It is said that in general, permeability is inversely proportional to magnetic resistance, namely permeability is the biggest, then magnetic resistance is the least.The present invention makes the first magnetic permeability mu 1 of centrally located magnetic texure 16 be more than the first clearance G 1 and second magnetic permeability mu 2 and the 3rd magnetic permeability mu 3 of the second clearance G 2 of both sides.In other words, the magnetic resistance of magnetic texure 16 is less than the first clearance G 1 and magnetic resistance of the second clearance G 2.
For example, centrally located magnetic texure 16 can be with LTCC (lowtemperatureco-firedceramic, LTCC) printing forms, now, first magnetic permeability mu 1 is about between 50 and 200, and the first clearance G 1 of both sides and the second magnetic permeability mu 2 of the second clearance G 2 and the 3rd magnetic permeability mu 3 approximate 1.Owing to the first magnetic permeability mu 1 of magnetic texure 16 is more than the first clearance G 1 and the second magnetic permeability mu 2 and the 3rd magnetic permeability mu 3 of the second clearance G 2, when variable coupling inducer 1 galvanization, initial magnetic flux will be passed through by the magnetic texure 16 of central authorities.It should be noted that, no matter the material of the first core 10 and the second core 14 why, the most no matter the permeability size of the first core 10 and the second core 14 why, as long as the first magnetic permeability mu 1 of centrally located magnetic texure 16 is more than the first clearance G 1 and the second magnetic permeability mu 2 and the 3rd magnetic permeability mu 3 of the second clearance G 2, it is possible to reach variable coupling inductance effect.
Additionally, the first core 10 has the 4th magnetic permeability mu 4, and the second core 14 has the 5th magnetic permeability mu 5.For example, in another embodiment, when the material of magnetic texure the 16, first core 10 and the second core 14 is all Ferrite (ferrite), then the first magnetic permeability mu the 1, the 4th magnetic permeability mu 4 is equal with the 5th magnetic permeability mu 5.When the material of magnetic texure 16 is Ferrite, can improve the first sense characteristic of variable coupling inducer 1, the efficiency making variable coupling inducer 1 use in underloading is more preferable.It should be noted that, the material of magnetic texure 16 may also be distinct from that the first core 10 and material of the second core 14, as long as the relation of the first magnetic permeability mu 1 to the 5th magnetic permeability mu 5 meets μ 1 μ 4 > μ 2, μ 3 and μ 1 μ 5 > μ 2 μ 3 is all right.
In sum, the present invention arranges the magnetic texure 16 with high permeability (the first the most above-mentioned magnetic permeability mu 1) between the second protuberance 102 and the second core 14 in the middle of the first core 10, and make this magnetic texure 16 be symmetric relative to the center line CL of the second protuberance 102, to be improved the initial sensibility reciprocal of variable coupling inducer 1 by this magnetic texure 16, thus improve light-load efficiency.
Refer to Fig. 5 and table 1 below, Fig. 5 is the graph of a relation measuring sensibility reciprocal and the electric current obtained with the variable coupling inducer 1 in Fig. 1, and table 1 is the synopsis of sensibility reciprocal and electric current.As it is shown in figure 5, A point is the transfer point (the A point electric current of this embodiment is 10A, but is not limited) of underloading and heavy duty, and B point is the maximum current (the B point electric current of this embodiment is 50A, but is not limited) that expectation reaches.The following current definition of A point is underloading, and from Fig. 5 and table 1, the variable coupling inducer 1 sensibility reciprocal when underloading significantly improves, and therefore the variable coupling inducer 1 of the present invention can be effectively improved light-load efficiency.It should be noted that, in the present embodiment, the overall height H of variable coupling inducer 1 is approximately 4.07mm, and vertical dimension D1 of the first clearance G 1 is between 0.03mm and 0.2mm, and vertical dimension D2 of the second clearance G 2 is between 0.08mm and 0.7mm.
Table 1
In the present embodiment, magnetic texure 16 has first surface and amasss A1, and the second protuberance 102 has second surface and amasss A2.As shown in Figure 3, the length of magnetic texure 16 and the second protuberance 102 is all X, and the width of magnetic texure 16 is Y1, and the width of the second protuberance 102 is Y2, then the first surface of magnetic texure 16 amasss A1 is X*Y1, and the second surface of the second protuberance 102 to amass A2 be X*Y2.If being the first electric current I1 by the current definition of A point, and be the second electric current I2 by the current definition of B point, then the first electric current I1, the second electric current I2 and first surface amass A1, second surface amasss the relation of A2 and is represented by 1.21 (I1/I2) A1/A2 0.81 (I1/I2).Additionally, can record the first sensibility reciprocal L1 under the first electric current I1, and can record the second sensibility reciprocal L2 under the second electric current I2, then the relation of the first sensibility reciprocal L1 and the second sensibility reciprocal L2 is represented by 0.8L1 L2 0.7L1.In other words, the present invention can amass A1 and second surface and amasss the size of A2 by adjusting first surface and adjust the first sensibility reciprocal L1 and the second sensibility reciprocal L2 under the second electric current I2 (maximum current that the most above-mentioned expectation reaches) under the first electric current I1 electric current of the transfer point of heavy duty (the most above-mentioned underloading with).
It should be noted that, the first above-mentioned electric current I1 can define in the following manner.Add at the first electric current I1 and under 1 ampere, record the 3rd sensibility reciprocal L3, and 5.5nH L1-L3 4.5nH.For example, the first electric current I1 of this embodiment is 10A, and the first sensibility reciprocal L1 of its correspondence is 159.35nH, and it is 11A that the first electric current I1 adds 1 ampere, and the 3rd sensibility reciprocal L3 of its correspondence is 154.38, then L1-L3=4.97nH, namely 5.5nH 4.97nH 4.5nH.By above-mentioned definition mode, it is possible to when variable coupling inducer 1 galvanization of the present invention, found the electric current (the first the most above-mentioned electric current I1) corresponding to the A point in Fig. 4 by the measurement of sensibility reciprocal.
Refer to first core 10 axonometric chart with magnetic texure 16' that Fig. 6, Fig. 6 are another embodiment of the present invention.Magnetic texure 16' main difference is that with above-mentioned magnetic texure 16, and length X3 of magnetic texure 16' is less than length X of magnetic texure 16, and the width Y3 of magnetic texure 16' is more than the width Y1 of magnetic texure 16.In the present embodiment, the surface area X3*Y3 of magnetic texure 16' is equal to the surface area X*Y1 of magnetic texure 16.Additionally, magnetic texure 16' still must be symmetric relative to the center line CL of the second protuberance 102.It should be noted that, magnetic texure 16' can be one-body molded with the first core 10, can be one-body molded with the second core 14, it is also possible to be stand-alone assembly, depending on actual application.
Refer to first core 10 axonometric chart with magnetic texure 16 ＂ that Fig. 7, Fig. 7 are another embodiment of the present invention.Magnetic texure 16 ＂ main difference is that with above-mentioned magnetic texure 16, and magnetic texure 16 ＂ includes two fragments 160, and the length of each fragment 160 is X4 and Y4 with width respectively.In the present embodiment, the surface area (X4*Y4) * 2 of magnetic texure 16 ＂ is equal to the surface area X*Y1 of magnetic texure 16.Additionally, two fragments 160 of magnetic texure 16 ＂ still must be symmetric relative to the center line CL of the second protuberance 102.It should be noted that, magnetic texure 16 ＂ can be one-body molded with the first core 10, can be one-body molded with the second core 14, it is also possible to be stand-alone assembly, depending on actual application.
Refer to the first core 10 and magnetic texure 16 that Fig. 8, Fig. 8 are another embodiment of the present invention " ' axonometric chart.Magnetic texure 16 " ' with main difference is that of above-mentioned magnetic texure 16, magnetic texure 16 " ' include four fragments 162, and the length of each fragment 162 is X5 and Y5 with width respectively.In the present embodiment, magnetic texure 16 " ' surface area (X5*Y5) * 4 equal to the surface area X*Y1 of magnetic texure 16.Additionally, magnetic texure 16 " ' four fragments 162 still must be symmetric relative to the center line CL of the second protuberance 102.It should be noted that, magnetic texure 16 " ' can be one-body molded with the first core 10, can be one-body molded with the second core 14, it is also possible to be stand-alone assembly, depending on actual application.
In other words, under identical table area, can the segments of magnetic texure needed for designed, designed and shape.No matter why are the segments of magnetic texure and shape, and magnetic texure all must be symmetric relative to the center line CL of the second protuberance 102.
Therefore, according to technique scheme, the variable coupling inducer of the present invention at least has following advantages and beneficial effect: the present invention arranges magnetic texure between the second protuberance and the second core in the middle of the first core, and make this magnetic texure be symmetric relative to the center line of the second protuberance, to be improved the initial sensibility reciprocal of variable coupling inducer by this magnetic texure, thus improve light-load efficiency.Additionally, the variable coupling inducer of the present invention can reach high saturation current with Ferrite (ferrite) as material, and use copper sheet to work as electrode to reduce D.C. resistance, therefore can have preferable efficiency in heavy duty.In other words, the variable coupling inducer of the present invention can improve underloading and heavy duty efficiency simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (12)
1. a variable coupling inducer, it is characterised in that described variable coupling inducer includes:
First core, the upper surface of described first core includes 2 first protuberances, the second protuberance and two metallic channels extending to second side surface relative with this first side surface from the first side surface, described second protruding parts is between described 2 first protuberances, and each described metallic channel lays respectively between one of them and described second protuberance of described 2 first protuberances；
Two wires, each described wire be respectively arranged at described two metallic channels one of them in；
Second core, is arranged on described first core, is formed with the first gap, is formed with the second gap between described second protuberance and described second core between each described first protuberance and described second core；And
nullMagnetic texure，It is arranged between described second protuberance and described second core，Described magnetic texure is symmetric relative to the center line of described second protuberance，Described center line extends to described second protruding parts in second midpoint at the second edge of this second side surface from described second protruding parts in first midpoint at the first edge of this first side surface，Wherein，Described magnetic texure has first surface and amasss A1，Described second protuberance has second surface and amasss A2，Described variable coupling inducer has the first sensibility reciprocal L1 when applying the first electric current I1，When applying the second electric current I2, there is the second sensibility reciprocal L2，Wherein，1.21(I1/I2)≧A1/A2≧0.81(I1/I2)，And 0.8L1 L2 0.7L1I1，Described first electric current I1 is the electric current of underloading and the transfer point of heavy duty，Described second electric current I2 is the maximum current that expectation reaches.
2. variable coupling inducer as claimed in claim 1, it is characterised in that the vertical dimension in described first gap is less than the vertical dimension in described second gap.
3. variable coupling inducer as claimed in claim 2, it is characterized in that, described variable coupling inducer has overall height H, and the vertical dimension in described first gap is between 0.0073H and 0.0492H, and the vertical dimension in described second gap is between 0.0196H and 0.1720H.
4. variable coupling inducer as claimed in claim 1, it is characterized in that, described magnetic texure has the first magnetic permeability mu 1, described first gap has the second magnetic permeability mu 2, described second gap has the 3rd magnetic permeability mu 3, and the relation of described first permeability to described 3rd permeability is μ 1 > μ 2 μ 3.
5. variable coupling inducer as claimed in claim 4, it is characterized in that, described first core has the 4th magnetic permeability mu 4, and described second core has the 5th magnetic permeability mu 5, and the relation of described first permeability to described 5th permeability is μ 1 μ 4 > μ 2 μ 3 and μ 1 μ 5 > μ 2 μ 3.
6. variable coupling inducer as claimed in claim 1, it is characterised in that in the scope that the vertical dimension of bottom surface extremely described second core that described first gap and described second gap are all located at described metallic channel is contained.
7. variable coupling inducer as claimed in claim 1, it is characterised in that described magnetic texure is one-body molded with described first core.
8. variable coupling inducer as claimed in claim 1, it is characterised in that described magnetic texure is one-body molded with described second core.
9. variable coupling inducer as claimed in claim 1, it is characterised in that described magnetic texure includes that at least one fragment, described at least one fragment are symmetric relative to the center line of described second protuberance.
10. variable coupling inducer as claimed in claim 1, it is characterised in that two ends of described magnetic texure completely attach to described first core and described second core respectively.
11. variable coupling inducers as claimed in claim 1, it is characterised in that add at described first electric current I1 and record the 3rd sensibility reciprocal L3 under 1 ampere, and 5.5nH L1-L3 4.5nH.
12. variable coupling inducers as claimed in claim 1, it is characterised in that described first gap is non-magnetic gap, and described second gap is air gap or non-magnetic gap.
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| CN201610428686.3A CN106257601B (en) | 2012-08-21 | 2012-08-21 | Variable coupling inductor |
| CN201210298002.4A CN103632805B (en) | 2012-08-21 | 2012-08-21 | Variable coupling inducer |
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| CN201210298002.4A CN103632805B (en) | 2012-08-21 | 2012-08-21 | Variable coupling inducer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1697099A (en) * | 2003-11-17 | 2005-11-16 | 美商·帕斯脉冲工程有限公司 | Inductive devices and methods |
| CN101354950A (en) * | 2007-06-08 | 2009-01-28 | Nec东金株式会社 | Inductor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2463503A (en) * | 2008-09-16 | 2010-03-17 | Cambridge Semiconductor Ltd | Crossed ridges in a gap of a ferrite core arrangement |
| TWI382432B (en) * | 2010-01-07 | 2013-01-11 | Cyntec Co Ltd | Inductor |
| JP2011176253A (en) * | 2010-01-28 | 2011-09-08 | Toyota Industries Corp | Induction apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1697099A (en) * | 2003-11-17 | 2005-11-16 | 美商·帕斯脉冲工程有限公司 | Inductive devices and methods |
| CN101354950A (en) * | 2007-06-08 | 2009-01-28 | Nec东金株式会社 | Inductor |
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| CN106257601A (en) | 2016-12-28 |
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| CN106257601B (en) | 2020-06-02 |
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