CN108320895A - A kind of integrated transformer - Google Patents
A kind of integrated transformer Download PDFInfo
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- CN108320895A CN108320895A CN201810292015.8A CN201810292015A CN108320895A CN 108320895 A CN108320895 A CN 108320895A CN 201810292015 A CN201810292015 A CN 201810292015A CN 108320895 A CN108320895 A CN 108320895A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
- H01F29/12—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable coil, winding, or part thereof; having movable shield
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D105/00—Coating compositions based on polysaccharides or on their derivatives, not provided for in groups C09D101/00 or C09D103/00
- C09D105/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- 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
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2871—Pancake coils
-
- 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
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
- C08K2003/2213—Oxides; Hydroxides of metals of rare earth metal of cerium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Insulating Of Coils (AREA)
Abstract
The invention discloses a kind of integrated transformers, including two opposite magnetic core, primary coil and the secondary coils set up, and the magnetic core includes magnetic core center pillar and magnetic core side wall, and the primary coil, secondary coil are sheathed on respectively on the magnetic core center pillar；It is also arranged with isolating device on the magnetic core center pillar, between primary coil and secondary coil；The isolating device includes isolation board and the height adjustment mechanism between isolation board；Radiator structure is equipped with outside the magnetic core.The present invention provides a kind of integrated transformer, which not only effectively reduces production cost, but also ensure that the stability of transformer output, while being also equipped with good insulating properties, corrosion resistance and heat dissipation performance.
Description
Technical field
The invention belongs to transformer technology fields, and in particular to a kind of integrated transformer.
Background technology
Transformer is the device for changing alternating voltage using the principle of electromagnetic induction, and main member is primary coil, secondary
Grade coil and magnetic core.Major function has:Voltage transformation, current transformation, impedance transformation, isolation, voltage stabilizing etc..
In the prior art, in Switching Power Supply use LLC topologies when it is general there are two types of, one is by transformer with
Resonant inductance is combined realization, and the coupling of such each coil of mode can be adjusted by different winding methods, but needs
External inductance, there are of high cost, occupancy PCB surfaces to accumulate the disadvantages such as larger, Switching Power Supply power density is low.Another kind is, by resonance
Inductance is integrated in transformer, does resonant inductance use using the leakage inductance of transformer, such mode can save external inductance, cost
It is relatively low.But since the relative position of primary coil and secondary coil is apart from relative close, the primary leakage inductance of formation is smaller,
The transformer of this structure is easy to be influenced by the fluctuation of load, and output is unstable.
Heat is also easy to produce when transformer station high-voltage side bus, the continuous improvement of heat can cause transformer different degrees of damage, because
The heat of this transformer must dissipate in time.In existing technology, mostly use transformer oil to transformer carry out heat dissipation and
It is cooling, and transformer oil is contacted with the core portion of transformer, easily corrodes the surface of magnetic core, to influence transformer
Security performance.
Invention content
In order to solve the deficiencies in the prior art, the present invention provides a kind of integrated transformers, and the integrated transformer is not
Production cost is only effectively reduced, and ensure that the stability of transformer output, while being also equipped with good insulating properties, resistance to
Corrosivity and heat dissipation performance.
Institute of the invention technique effect to be achieved is realized by following scheme：
Integrated transformer provided by the invention, including two opposite magnetic core, primary coil and the secondary coils set up, the magnetic core packet
Magnetic core center pillar and magnetic core side wall are included, the primary coil, secondary coil are sheathed on respectively on the magnetic core center pillar；In the magnetic core
It is also arranged with isolating device on column, between primary coil and secondary coil；The isolating device include isolation board and set on isolation
Height adjustment mechanism between plate；Radiator structure is equipped with outside the magnetic core.
The magnetic core is main magnetic circuit part in transformer, for increasing electromagnetic intensity, improves voltage conversion effect
Rate；The primary coil and secondary coil are the circuit part of transformer, cause to incude in the primary coil for transformer
Electric current input and pass through；The secondary coil is used to generate induced electromotive force or induced current while for the defeated of electric current
Go out.
The isolating device obtains leakage inductance for separating primary coil and secondary coil；The isolation board plays insulation, resistance
Every effect, the height adjustment mechanism is used to adjust the relative position of primary coil and secondary coil, make primary coil and time
The distance of grade coil maximizes, and forms larger primary leakage inductance, the effective stability for ensureing output.
The heat dissipation of the radiator structure for transformer, makes transformer have good heat dissipation performance.
Further, the isolation board is epoxy plate or PCB, and electric property stabilization, is suitable for machinery, electric appliance at high temperature
And the high insulation system parts of electronics, there are good mechanical performance, dielectric properties, and heat resistance and moisture resistivity are preferable.
Further, the height adjustment mechanism is expansion bracket structure or spring structure, can not only realize effective deformation
It adjusts, and structure is smaller, is suitable for the small size demand of transformer.
Further, the total height of the isolating device is 1-1.2 times of the magnetic core center pillar height, make primary coil with
The relative position distance of secondary coil maximizes, and forms larger primary leakage inductance, ensures the stability of output.
Further, the primary coil and secondary coil are the wound coil of two-wire cake, electrolytic copper sheet type coil or flat
The vertical coil of line can effectively reduce the height of primary coil, increase the relative position distance of primary coil and secondary coil, simultaneously
Reduce the volume of transformer entirety.
Further, the magnetic core is EE magnetic cores, EF magnetic cores or EFD magnetic cores, and EE, EF and EFD type ferrite magnetic core are most
Common magnetic core is usually used in the miniature transformer of switch transformer, energy-saving lamp.
Further, the magnetic core surface is coated with erosion resisting insulation coating, insulation for improving magnetic core and corrosion-resistant
Performance.
Further, the component of the erosion resisting insulation coating and constituent mass number are：
50-100 parts of chitosan
50-100 parts of aqueous epoxy resins
100 parts of amino resins 20-
0.2-1 parts of rare earth compound
0.1-2 parts of acetic acid
100-2000 parts of pure water.
Further, the radiator structure is the external rectangular frame structure for being equipped with ridged protrusion cooling fin, for transformer
Effective heat dissipation.
Further, heat-conducting silicone grease is coated with outside the magnetic core between radiator structure or is pasted with radiating silica gel sheet,
It can will be in the heat derives to radiator structure of transformer.
The present invention has the following advantages：
1, the transformer obtains leakage inductance by the way that isolating device is arranged in primary coil and secondary coil, to replace resonance electric
Sense, significantly reduces production cost；
2, the isolating device of the transformer is structure with freely-adjustable height, can make the opposite position of primary coil and secondary coil
It sets distance to maximize, the effective stability for ensureing output；
3, the magnetic core surface of the transformer is coated with erosion resisting insulation coating, and transformer is made to have good insulating properties and corrosion-resistant
Property；
4, it is equipped with radiator structure outside the magnetic core of the transformer, transformer is made to have good heat dissipation performance.
Description of the drawings
Fig. 1 is the structural schematic diagram of integrated transformer in the present invention；
Fig. 2 is the structural schematic diagram of isolating device in the present invention；
Fig. 3 is the structural schematic diagram of radiator structure in the present invention.
Specific implementation mode
The present invention will be described in detail with reference to the accompanying drawings and examples.
The integrated transformer provided in the present embodiment is as shown in attached drawing 1,2,3, including the two opposite magnetic cores 1 set up, primary
Coil 2 and secondary coil 3, magnetic core include magnetic core center pillar 101 and magnetic core side wall 102, and primary coil, secondary coil are sheathed on respectively
On magnetic core center pillar；On magnetic core center pillar, isolating device 4 is also arranged between primary coil and secondary coil；Isolating device include every
Height adjustment mechanism 402 from plate 401 and between isolation board；Radiator structure 5 is equipped with outside magnetic core.
Magnetic core is main magnetic circuit part in transformer, for increasing electromagnetic intensity, improves voltage conversion efficiency；Just
Grade coil and the circuit part that secondary coil is transformer, cause in primary coil for transformer the electric current of induction input and
Pass through；Secondary coil is used to generate induced electromotive force or induced current while the output for electric current.
Isolating device obtains leakage inductance for separating primary coil and secondary coil；Isolation board plays the work of insulation, barrier
Be used to adjust the relative position of primary coil and secondary coil with, height adjustment mechanism, make primary coil and secondary coil away from
From maximization, larger primary leakage inductance is formed, the effective stability for ensureing output.
The heat dissipation of radiator structure for transformer makes transformer have good heat dissipation performance.
Isolation board is epoxy plate or PCB, and electric property stabilization, is used high exhausted suitable for machinery, electric appliance and electronics at high temperature
Edge structural elements have good mechanical performance, dielectric properties, and heat resistance and moisture resistivity are preferable.Height adjustment mechanism is
Expansion bracket structure or spring structure can not only realize that effective deformation is adjusted, but also structure is smaller, is suitable for the corpusculum of transformer
Product demand.The total height of isolating device is 1-1.2 times of magnetic core center pillar height, makes the relative position of primary coil and secondary coil
Distance maximizes, and forms larger primary leakage inductance, ensures the stability of output.
Primary coil and secondary coil are the wound coil of two-wire cake, electrolytic copper sheet type coil or the vertical coil of flat wire, can
The height of secondary coil is effectively reduced, increases the relative position distance of primary coil and secondary coil, while it is whole to reduce transformer
The volume of body.Magnetic core is EE magnetic cores, EF magnetic cores or EFD magnetic cores, and EE, EF and EFD type ferrite magnetic core are most common magnetic cores, often
For switch transformer, energy-saving lamp miniature transformer in.
Magnetic core surface is coated with thermal dispersant coatings, effective heat dissipation of for transformer；Radiator structure is external convex equipped with ridged
The rectangular frame structure for playing cooling fin 501, can further optimize the heat dissipation performance of transformer.Outside magnetic core between radiator structure
Coated with heat-conducting silicone grease or it is pasted with radiating silica gel sheet, it can will be in the heat derives to radiator structure of transformer.
Magnetic core surface is coated with erosion resisting insulation coating, the insulation for improving magnetic core and corrosion resistance.It is corrosion-resistant exhausted
The component and constituent mass number of edge coating be：
50-100 parts of chitosan
50-100 parts of aqueous epoxy resins
100 parts of amino resins 20-
0.2-1 parts of rare earth compound
0.1-2 parts of acetic acid
100-2000 parts of pure water.
Chitosan is not soluble in water and oily, but is dissolved in dilute acid solution, has good film forming, and degradation possibility is small,
It can be contacted with magnetic core to avoid transformer oil after coating, play insulation, etch-proof, while in also adsorbable transformer oil
Harmful substance；Aqueous epoxy resins are adaptable, have high adhesive force to magnetic core, film corrosion resistance after solidification and
Chemical resistance is excellent, and film contraction is small, hardness is high, wearability is good, electrical insulation properties are excellent；Amino resins is used
Make the crosslinking agent of coating, there is excellent gloss, colour retention, hardness, resistance to chemical reagents, water-fast and weatherability；Rare earth metal chemical combination
Object is one or more of cerium, erbium, dysprosium, lanthanum, can be effectively improved the uniformity and planarization of coating.
Embodiment 1
Coating composition is by 50 parts of chitosans, 50 parts of aqueous epoxy resins, 20 parts of amino resins, 0.2 part of cerium, 0.1 part of acetic acid
It is formed with 500 parts of pure water；The coating after mixing, is coated on steel surface using churned mechanically method, and baking is dried, will
Steel, which is put into 0.5mol/L hydrochloric acid solutions, to be impregnated 48 hours, is then taken out and is dried, and is used for analysis test.
It is found after analysis：Compared with the coating without cerium, the hole for the coating surface being added after cerium obviously subtracts
Few, uniformity and the planarization tool of coating improve significantly；Compared with the coating of not chitosan-containing and aqueous epoxy resins, add
The degree for entering the coating shedding after chitosan and aqueous epoxy resins is obviously reduced, and the adhesion and stability of coating have obviously
It is promoted；Compared with the coating of amino resins, the coating gloss of amino resins is added without being substantially reduced, the glossiness of steel is good
It is good.
Embodiment 2
Coating composition is by 50 parts of chitosans, 50 parts of aqueous epoxy resins, 20 parts of amino resins, 0.5 part of cerium, 0.1 part of acetic acid
It is formed with 500 parts of pure water；The coating after mixing, is coated on steel surface using churned mechanically method, and baking is dried, will
Steel, which is put into 0.5mol/L hydrochloric acid solutions, to be impregnated 48 hours, is then taken out and is dried, and is used for analysis test.
It is found after analysis comparison：Compared with Example 1, the hole of the coating surface of the present embodiment is significantly reduced and is reduced,
The surface of coating uniformly, planarization, illustrate that the addition of rare earth metal improves significantly to uniformity and the planarization tool of coating.
Embodiment 3
Coating composition is by 80 parts of chitosans, 80 parts of aqueous epoxy resins, 20 parts of amino resins, 0.2 part of cerium, 0.1 part of acetic acid
It is formed with 800 parts of pure water；The coating after mixing, is coated on steel surface using churned mechanically method, and baking is dried, will
Steel, which is put into 0.5mol/L hydrochloric acid solutions, to be impregnated 48 hours, is then taken out and is dried, and is used for analysis test.
It is found after analysis comparison：Compared with Example 1, the coating of the present embodiment illustrates chitosan and water substantially without falling off
Property epoxy resin addition effectively raise the corrosion resistance and adhesion of coating, coating has excellent insulation and corrosion-resistant
Performance.
Embodiment 4
Coating composition is by 50 parts of chitosans, 50 parts of aqueous epoxy resins, 50 parts of amino resins, 0.2 part of cerium, 0.1 part of acetic acid
It is formed with 500 parts of pure water；The coating after mixing, is coated on steel surface using churned mechanically method, and baking is dried, will
Steel, which is put into 0.5mol/L hydrochloric acid solutions, to be impregnated 48 hours, is then taken out and is dried, and is used for analysis test.
It is found after analysis comparison：Compared with Example 1, the curing rate of the present embodiment has further promotion, coating tool
There are excellent insulation and corrosion resistance.
It can be seen that from the scheme of above-described embodiment the present invention provides a kind of integrated transformer, the integrated transformer is not
Production cost is only effectively reduced, and ensure that the stability of transformer output, while being also equipped with good insulating properties, resistance to
Corrosivity and heat dissipation performance.
Finally, it should be noted that above example be only to illustrate the embodiment of the present invention technical solution rather than to its into
Row limitation, although the embodiment of the present invention is described in detail with reference to preferred embodiment, those skilled in the art
It should be understood that the technical solution of the embodiment of the present invention can be still modified or replaced equivalently, and these are changed or wait
The range of modified technical solution disengaging technical solution of the embodiment of the present invention cannot also be made with replacement.
Claims (10)
1. a kind of integrated transformer, including two opposite magnetic core, primary coil and the secondary coils set up, it is characterised in that：
The magnetic core includes magnetic core center pillar and magnetic core side wall, and the primary coil, secondary coil are sheathed on respectively in the magnetic core
On column；
It is also arranged with isolating device on the magnetic core center pillar, between primary coil and secondary coil；The isolating device include every
Height adjustment mechanism from plate and between isolation board；
Radiator structure is equipped with outside the magnetic core.
2. integrated transformer as described in claim 1, it is characterised in that：The isolation board is epoxy plate or PCB.
3. integrated transformer as described in claim 1, it is characterised in that：The height adjustment mechanism is expansion bracket structure or spring
Structure.
4. integrated transformer as described in claim 1, it is characterised in that：The total height of the isolating device is the magnetic core center pillar
1-1.2 times of height.
5. integrated transformer as described in claim 1, it is characterised in that：The primary coil and secondary coil be two-wire cake around
Formula coil, electrolytic copper sheet type coil or the vertical coil of flat wire.
6. integrated transformer as described in claim 1, it is characterised in that：The magnetic core is EE magnetic cores, EF magnetic cores or EFD magnetic cores.
7. integrated transformer as described in claim 1, it is characterised in that：The magnetic core surface is coated with erosion resisting insulation coating.
8. integrated transformer as claimed in claim 7, which is characterized in that the component and constituent mass of the erosion resisting insulation coating
Number is：
50-100 parts of chitosan
50-100 parts of aqueous epoxy resins
100 parts of amino resins 20-
0.2-1 parts of rare earth compound
0.1-2 parts of acetic acid
100-2000 parts of pure water.
9. integrated transformer as described in claim 1, it is characterised in that：The radiator structure is that the external ridged protrusion that is equipped with radiates
The rectangular frame structure of piece.
10. integrated transformer as described in claim 1, it is characterised in that：It is coated between radiator structure outside the magnetic core
Heat-conducting silicone grease is pasted with radiating silica gel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810292015.8A CN108320895A (en) | 2018-03-30 | 2018-03-30 | A kind of integrated transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810292015.8A CN108320895A (en) | 2018-03-30 | 2018-03-30 | A kind of integrated transformer |
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| Publication Number | Publication Date |
|---|---|
| CN108320895A true CN108320895A (en) | 2018-07-24 |
Family
ID=62895924
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| CN201810292015.8A Pending CN108320895A (en) | 2018-03-30 | 2018-03-30 | A kind of integrated transformer |
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2018
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| JP2001335964A (en) * | 2000-05-30 | 2001-12-07 | Nkk Corp | Organic compound coated steel sheet excellent in corrosion resistance |
| US20040046632A1 (en) * | 2001-10-05 | 2004-03-11 | Tomoji Kumano | Iron core exhibiting excellent insulating property at end face, and method for coating end face of iron core |
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