CN105385048A - Ellipsoidal multi-purpose ferrite magnetic core and transformer - Google Patents
Ellipsoidal multi-purpose ferrite magnetic core and transformer Download PDFInfo
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- CN105385048A CN105385048A CN201510957524.4A CN201510957524A CN105385048A CN 105385048 A CN105385048 A CN 105385048A CN 201510957524 A CN201510957524 A CN 201510957524A CN 105385048 A CN105385048 A CN 105385048A
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- magnetic core
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- elliposoidal
- semiellipse
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Links
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 25
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- 229920001897 terpolymer Polymers 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 235000017550 sodium carbonate Nutrition 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000006229 carbon black Substances 0.000 claims description 5
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 5
- 239000000347 magnesium hydroxide Substances 0.000 claims description 5
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 5
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 5
- 239000005662 Paraffin oil Substances 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 239000005864 Sulphur Substances 0.000 claims description 4
- 229920010741 Ultra High Molecular Weight Polyethylene (UHMWPE) Polymers 0.000 claims description 4
- RGCKGOZRHPZPFP-UHFFFAOYSA-N alizarin Chemical compound C1=CC=C2C(=O)C3=C(O)C(O)=CC=C3C(=O)C2=C1 RGCKGOZRHPZPFP-UHFFFAOYSA-N 0.000 claims description 4
- 230000003712 anti-aging effect Effects 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 239000004200 microcrystalline wax Substances 0.000 claims description 4
- 235000019808 microcrystalline wax Nutrition 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 238000004513 sizing Methods 0.000 description 5
- 238000004073 vulcanization Methods 0.000 description 5
- 230000032683 aging Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 230000002500 effect on skin Effects 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000005987 sulfurization reaction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002784 sclerotic effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention provides an ellipsoidal multi-purpose ferrite magnetic core, which comprises two semi-elliptical spherical magnetic cores, wherein the two semi-elliptical spherical magnetic cores are subjected to pairing combination to form the ellipsoidal multi-purpose ferrite magnetic core. According to the present invention, according to the ellipsoidal multi-purpose ferrite magnetic core using the technical scheme, the same magnetic core is provided with two winding outputs so as to transmit high power, and the windings are uniformly distributed inside the spherical magnetic core so as to provide excellent magnetic shielding effect and improve the reliability of the device. The present invention further provides a transformer using the magnetic core.
Description
Technical field
The present invention relates to a kind of magnetic core of Mn-Zn soft magnetic ferrite and use the transformer of this magnetic core, particularly relate to a kind of elliposoidal multi-usage FERRITE CORE.
Background technology
Soft magnetic ferrite is a kind of magnetic functional material, is the important foundation material of the high-tech sectors such as development China information technology, biotechnology, energy technology and national defense construction, is also national economy, the basis of social development and national defense construction and guide.Soft magnetic materials is existing, and oneself becomes the indispensable integral part of modern military electronics, industry and consumer electronic product.
Be mainly reflected in high frequency and complanation two aspects before the development trend of magnetic technology, and along with the miniaturization of power electronic equipment, the integrated of magnetic technology also more and more comes into one's own, and that is a secondary magnetic core needs to realize Multiple coil outlet.
The magnetic core both-side opening of the shapes such as existing EE, EI, ER is all comparatively large, and have more winding " spilling ", Magnetic Shielding Effectiveness is undesirable, is easy to produce Radiative EMI.
Existing core shapes generally all has more multi-angular, and the quality of magnetic core own is more crisp, and when being collided, easy unfilled corner falls block, affects the production efficiency of product, uses the performance that also can have influence on the finished product in device.
In addition, FERRITE CORE can be made into multiwinding transformer and inductance.Because transformer at high temperature works usually, and the material such as rubber pad, rubber frid used in transformer at present at high temperature heatproof air aging performance is not good, work-ing life is short, in order to improve the thermal-oxidative aging property of material, usually adopts terpolymer EP rubber as elastomeric material.But, although existing ethylene-propylene-diene monomer glued compound material ageing-resistant performance increases, still do not reach desirable requirement, and physical strength is not high.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of elliposoidal multi-usage FERRITE CORE that a kind of structure is simple, cost is low, easy and simple to handle.
A kind of elliposoidal multi-usage of the present invention FERRITE CORE, comprise two spherical magnetic cores of semiellipse and combine composition by pairing between two, described pairing is between two combined into flexible connection, the bottom surface of the spherical magnetic core of described semiellipse is oval, is provided with two each and every one circular central posts in the spherical magnetic core inner bottom surface of semiellipse.
Preferably, described circular central post is located in two focuses of oval bottom surface.
Preferably, be provided with opening in the two ends of the spherical magnetic core of semiellipse, described opening is long strip shape.
Preferably, the bottom surface that the ellipse of the spherical magnetic core of described semiellipse is spherical and newel bonding surface are plane.
Preferably, described flexible connection is clamping.
Beneficial effect: adopt a kind of elliposoidal multi-usage FERRITE CORE of the present invention to have two windings on same secondary magnetic core and export, use as 2 inductance simultaneously, the miniaturization of magnetic device and power supply can be realized; And magnetic core global shape is oval spherical, increase the shock-resistance features of product, when running into collision, by pressure dissipation in magnetic core entirety, the breakage possibility of magnetic core can be decreased; Simultaneously, because magnetic flux is the same with electric current, spherical there is skin effect, so can utilize material to greatest extent, the waste of material can not be produced, simultaneously also make onesize magnetic core, spherically can transmit larger power, winding is evenly distributed on the inside of spherical magnetic core, there is very superior magnetic screening effect, can Radiative EMI be reduced; The magnetic circuit of magnetic core everywhere net sectional area is comparatively even, can keep the consistence of magneticflux-density everywhere, can not be too high and cause too high core loss due to local flux density, thus produces the too high phenomenon of temperature rise, improves the reliability of device.
Another object of the present invention is to provide a kind of formula of ethylene propylene terpolymer with that can meet aging resistance, requirement of mechanical strength, as the elastomeric material in elliposoidal multi-usage FERRITE CORE multiwinding transformer of the present invention.
To achieve these goals, the invention provides a kind of for the above-mentioned terpolymer EP rubber in transformer, its weight proportion is as follows: EPDM75 part, IIR10 part, ultrahigh molecular weight polyethylene(UHMWPE) 15 parts, anti-aging agent RD 1 part, antioxidant BLE-W1 part, 3 parts, zinc oxide, white carbon black 25 parts, magnesium hydroxide 40 parts, zinc borate 5 parts, paraffin oil 4 parts, turkey red oil 1 part, Microcrystalline Wax 2 parts, DCP3 part, two 251 parts of vulcanizing agent, soda ash 1 part, sulphur 0.5 part.
The present invention adopts the method for post cure, and improve product crosslinking degree, wherein the temperature of one step cure is 170 DEG C ~ 180 DEG C, curing time 5 ' ~ 10 '; The temperature of post vulcanization is 170 DEG C, curing time 90 '.
Because IIR belongs to softening type when high temperature, EPDM then belongs to sclerotic type, both and with reducing sizing material changes in hardness when high temperature; Ultrahigh molecular weight polyethylene(UHMWPE) and terpolymer EP rubber are also by the weatherable performance that can improve rubber; Soda ash is conducive to accelerating vulcanization rate, improves the resistance toheat of sizing material; Adding soda ash makes system be alkalescence, plays a driving role, can shorten the curing time of sizing material to the vulcanization of rubber, and in addition, soda ash thermostability material, is conducive to the thermostability improving sizing material; Magnesium hydroxide and zinc borate composition halogen-free flame-retardant system, meet environmental requirement; White carbon black is strengthening agent, can improve the resistance to elevated temperatures of sizing material, physical strength and water tolerance with turkey red oil (sulfonated castor oil).
Accompanying drawing explanation
Fig. 1 is a kind of elliposoidal multi-usage of the present invention FERRITE CORE overall schematic
Fig. 2 is that a kind of elliposoidal multi-usage of the present invention FERRITE CORE coordinates coil schematic diagram
Wherein: 1, the spherical magnetic core of semiellipse, 2, bottom surface, 3, newel, 4, opening.
Embodiment
Embodiment 1
As shown in Figure 1 and Figure 2, the object of the present invention is to provide a kind of elliposoidal multi-usage FERRITE CORE, comprise two spherical magnetic cores 1 of semiellipse and combine composition by pairing between two, described pairing is between two combined into flexible connection, the bottom surface of the spherical magnetic core of described semiellipse is oval, be provided with two each and every one circular central posts 3 in semiellipse spherical magnetic core 1 inner bottom surface 2, described circular central post 3 is located in two focuses of oval bottom surface 2; Opening 4 is provided with in the two ends of the spherical magnetic core 1 of semiellipse, described opening 4 is long strip shape, and the spherical bottom surface of the ellipse of the spherical magnetic core of described semiellipse 1 and newel 3 bonding surface be plane in the present embodiment, this elliposoidal multi-usage FERRITE CORE is by the optimization design through physical dimension, substantially the uniformity consistency of magnetic circuit is maintained, can not be too high and cause core loss to increase severely due to local flux density, form temperature rise " focus ", thus effectively control the temperature rise of device; And elliposoidal multi-usage FERRITE CORE can be made into multiwinding transformer and inductance, for miniaturization, lightweight circuit power, dc-dc and DC-AC invertor, in fields such as communication, automotive electronics, mancarried electronic aid, LED illumination.
In the present embodiment, this elliposoidal multi-usage FERRITE CORE has two windings and exports on same secondary magnetic core, uses simultaneously, can realize the miniaturization of magnetic device and power supply as two inductance; And magnetic core global shape is oval spherical, increase the shock-resistance features of product, when running into collision, by pressure dissipation in magnetic core entirety, the breakage possibility of magnetic core can be decreased; Simultaneously, because magnetic flux is the same with electric current, spherical there is skin effect, so can utilize material to greatest extent, the waste of material can not be produced, simultaneously also make onesize magnetic core, spherically can transmit larger power, winding is evenly distributed on the inside of spherical magnetic core, there is very superior magnetic screening effect, can Radiative EMI be reduced; The magnetic circuit of magnetic core everywhere net sectional area is comparatively even, can keep the consistence of magneticflux-density everywhere, can not be too high and cause too high core loss due to local flux density, thus produces the too high phenomenon of temperature rise, improves the reliability of device.
Described on base, described flexible connection is clamping, and such two spherical magnetic cores of semiellipse just can as required, linking together at any time, and when needs overhaul or be out of order time, just can open very easily; Structure is simple, easy to use.
Embodiment 2
For the above-mentioned terpolymer EP rubber in transformer, weight proportion is as follows: EPDM75 part, IIR10 part, ultrahigh molecular weight polyethylene(UHMWPE) 15 parts, anti-aging agent RD 1 part, antioxidant BLE-W1 part, 3 parts, zinc oxide, white carbon black 25 parts, magnesium hydroxide 40 parts, zinc borate 5 parts, paraffin oil 4 parts, turkey red oil 1 part, Microcrystalline Wax 2 parts, DCP3 part, two 251 parts of vulcanizing agent, soda ash 1 part, sulphur 0.5 part.
Adopt the method for post cure to carry out sulfuration, wherein the temperature of one step cure is 170 DEG C ~ 180 DEG C, curing time 5 ' ~ 10 '; The temperature of post vulcanization is 170 DEG C, curing time 90 '.
Comparative example
The weight proportion of terpolymer EP rubber is as follows: an EPDM100 part, anti-aging agent RD 1 part, antioxidant BLE-W1 part, 3 parts, zinc oxide, white carbon black 25 parts, magnesium hydroxide 40 parts, zinc borate 5 parts, paraffin oil 5 parts, Microcrystalline Wax 2 parts, DCP3 part, two 251 parts of vulcanizing agent, sulphur 0.5 part.
Adopt the method for post cure to carry out sulfuration, wherein the temperature of one step cure is 170 DEG C ~ 180 DEG C, curing time 5 ' ~ 10 '; The temperature of post vulcanization is 170 DEG C, curing time 90 '.
Carry out performance test to the vulcanized rubber of embodiment 2 and comparative example, result is as following table 1.
Table 1 performance test
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (8)
1. an elliposoidal multi-usage FERRITE CORE, it is characterized in that: comprise two spherical magnetic cores of semiellipse and combine composition by pairing between two, described pairing is between two combined into flexible connection, the bottom surface of the spherical magnetic core of described semiellipse is oval, is provided with two each and every one circular central posts in the spherical magnetic core inner bottom surface of semiellipse.
2. a kind of elliposoidal multi-usage FERRITE CORE according to claim 1, is characterized in that: described circular central post is located in two focuses of oval bottom surface.
3. a kind of elliposoidal multi-usage FERRITE CORE according to claim 1, it is characterized in that: be provided with opening in the two ends of the spherical magnetic core of semiellipse, described opening is long strip shape.
4. a kind of elliposoidal multi-usage FERRITE CORE according to claim 1, is characterized in that: the bottom surface that the ellipse of the spherical magnetic core of described semiellipse is spherical and newel bonding surface are plane.
5. a kind of elliposoidal multi-usage FERRITE CORE according to claim 1, is characterized in that: described flexible connection is clamping.
6. a transformer, uses the multi-usage FERRITE CORE described in any one of claim 1-5.
7. transformer according to claim 6, is characterized in that, also uses a kind of terpolymer EP rubber.
8. transformer according to claim 7, is characterized in that, described terpolymer EP rubber weight proportion is as follows: EPDM75 part, IIR10 part, ultrahigh molecular weight polyethylene(UHMWPE) 15 parts, anti-aging agent RD 1 part, antioxidant BLE-W1 part, 3 parts, zinc oxide, white carbon black 25 parts, magnesium hydroxide 40 parts, zinc borate 5 parts, paraffin oil 4 parts, turkey red oil 1 part, Microcrystalline Wax 2 parts, DCP3 part, two 251 parts of vulcanizing agent, soda ash 1 part, sulphur 0.5 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510957524.4A CN105385048B (en) | 2015-12-18 | 2015-12-18 | Ellipsoidal multi-purpose ferrite magnetic core and transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510957524.4A CN105385048B (en) | 2015-12-18 | 2015-12-18 | Ellipsoidal multi-purpose ferrite magnetic core and transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105385048A true CN105385048A (en) | 2016-03-09 |
| CN105385048B CN105385048B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510957524.4A Active CN105385048B (en) | 2015-12-18 | 2015-12-18 | Ellipsoidal multi-purpose ferrite magnetic core and transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN105385048B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1652261A (en) * | 2005-01-26 | 2005-08-10 | 上海电缆研究所 | Medium voltage winding cable for electric generator, motor and transformer |
| CN202564008U (en) * | 2012-05-11 | 2012-11-28 | 湖南谦益电子科技有限公司 | Elliptic combined ferrite magnetic core |
| CN203055608U (en) * | 2012-12-27 | 2013-07-10 | 娄底市利通磁电科技有限公司 | Ferrite magnetic core |
| CN204834284U (en) * | 2015-08-26 | 2015-12-02 | 乐清市精密电子电器有限公司 | Anti burst short circuit transformer |
| CN205230748U (en) * | 2015-12-18 | 2016-05-11 | 山东嘉诺电子有限公司 | Spheroidicity multipurpose ferrite core and transformer |
-
2015
- 2015-12-18 CN CN201510957524.4A patent/CN105385048B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1652261A (en) * | 2005-01-26 | 2005-08-10 | 上海电缆研究所 | Medium voltage winding cable for electric generator, motor and transformer |
| CN202564008U (en) * | 2012-05-11 | 2012-11-28 | 湖南谦益电子科技有限公司 | Elliptic combined ferrite magnetic core |
| CN203055608U (en) * | 2012-12-27 | 2013-07-10 | 娄底市利通磁电科技有限公司 | Ferrite magnetic core |
| CN204834284U (en) * | 2015-08-26 | 2015-12-02 | 乐清市精密电子电器有限公司 | Anti burst short circuit transformer |
| CN205230748U (en) * | 2015-12-18 | 2016-05-11 | 山东嘉诺电子有限公司 | Spheroidicity multipurpose ferrite core and transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105385048B (en) | 2017-02-22 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Denomination of invention: Ellipsoidal multipurpose ferrite core and transformer Effective date of registration: 20210813 Granted publication date: 20170222 Pledgee: Shandong Tengzhou rural commercial bank Limited by Share Ltd. SME branch Pledgor: SHANDONG JIANUO ELECTRONICS Co.,Ltd. Registration number: Y2021980007724 |
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Date of cancellation: 20220816 Granted publication date: 20170222 Pledgee: Shandong Tengzhou rural commercial bank Limited by Share Ltd. SME branch Pledgor: SHANDONG JIANUO ELECTRONICS Co.,Ltd. Registration number: Y2021980007724 |
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Denomination of invention: An ellipsoid multipurpose ferrite core and transformer Effective date of registration: 20220831 Granted publication date: 20170222 Pledgee: Shandong Tengzhou Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG JIANUO ELECTRONICS Co.,Ltd. Registration number: Y2022980014184 |
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Date of cancellation: 20230103 Granted publication date: 20170222 Pledgee: Shandong Tengzhou Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG JIANUO ELECTRONICS Co.,Ltd. Registration number: Y2022980014184 |
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