CN109494073A - A kind of adhesive tape flanging process of isolating transformer primary and secondary - Google Patents
A kind of adhesive tape flanging process of isolating transformer primary and secondary Download PDFInfo
- Publication number
- CN109494073A CN109494073A CN201811388197.5A CN201811388197A CN109494073A CN 109494073 A CN109494073 A CN 109494073A CN 201811388197 A CN201811388197 A CN 201811388197A CN 109494073 A CN109494073 A CN 109494073A
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- China
- Prior art keywords
- adhesive tape
- winding
- secondary windings
- conducting wire
- insulation adhesive
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/122—Insulating between turns or between winding layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/125—Other insulating structures; Insulating between coil and core, between different winding sections, around the coil
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
Abstract
The present invention provides a kind of adhesive tape flanging processes of isolating transformer primary and secondary, the layer insulation adhesive tape between armature winding and secondary windings that transformer may be intersected directly carries out the processing of L shape crimping, the conducting wire of the conducting wire of armature winding, secondary windings is isolated by the bead portion of L shape crimping, avoids the conducting wire of armature winding from directly contacting with the conducting wire of secondary windings and intersects.The beneficial effects of the present invention are: the layer insulation adhesive tape between armature winding and secondary windings that transformer may be intersected directly carries out the processing of L shape crimping, the conducting wire of the conducting wire of armature winding, secondary windings is isolated by the bead portion of L shape crimping, it avoids the conducting wire of armature winding from directly contacting with the conducting wire of secondary windings to intersect, it avoids increasing additional process and manually carries out security isolation with the technology mode of Teflon casing or reflexed adhesive tape, to simplify process, raising efficiency and reduction cost of labor, are also applied for automated production.
Description
Technical field
The present invention relates to transformer more particularly to a kind of adhesive tape flanging processes of isolating transformer primary and secondary.
Background technique
Transformer as described herein is high frequency transformer, generally by 4 winding coils and magnetic core, the isolation of skeleton and interlayer
Adhesive tape composition, winding are divided into primary high pressure winding and secondary low-voltage winding in safety standard, and primary high pressure winding includes just
Grade main winding, auxiliary winding, shield winding；Armature winding is generally by enameled wire coiling, and secondary windings is by three layer insulation wire coiling.
With the rapid development of electronic technology, the power supply of the power supply of electron equipment or charging is widely used, market
On power supply include charger, adapter, LED drive power, vehicle fills etc. mainly uses high frequency transformer as the energy of core at present
Energy converter part.Regular power supply must test confirmation via qualified Safety Approval laboratory testing and meet national related peace
Full standard just can enter market sale after providing safety message and certificate.Core devices of the transformer as power supply, in a standard
There is specific safety if (such as the safe part 1 of GB4943.1-2011 Information Technology Equipment: General Requirement 2.10.5.12 chapters and sections)
It is required that project: it is if any directly contact and mutually at 45 ° between transformer primary and secondary winding conducting wire~90 ° between unspecified angle, and hold
It is stretched by winding, then mechanical stress protection should be provided and be just able to satisfy standard requirements, such as this protection can pass through insulation sleeve
Pipe or flaky material provide physical isolation using 2 times of the insulating requirements number of plies.
To meet the above Safety Approval requirement, transformer, which processes traditional protective treatment measure, to be increased manually to primary and secondary
The part that winding conducting wire will contact covers teflon insulating sleeve, or increase reflexed insulating cement brings and is isolated, and avoids it straight
Connect cross-contact.Traditional processing method is time-consuming and laborious in mass production, processing staff's large labor intensity, cost of labor
Height, and production efficiency is low, limits the development of enterprise, it is therefore desirable to new processing technology is developed, to reduce cost, promotes life
Produce efficiency.
Summary of the invention
In order to solve the problems in the prior art, the present invention provides a kind of adhesive tape crimping works of isolating transformer primary and secondary
Skill.
The present invention provides a kind of adhesive tape flanging process of isolating transformer primary and secondary, the primary that transformer may be intersected
Layer insulation adhesive tape between winding and secondary windings directly carries out the processing of L shape crimping, is isolated by the bead portion of L shape crimping
The conducting wire of the conducting wire of armature winding, secondary windings, avoids the conducting wire of armature winding from directly contacting with the conducting wire of secondary windings and intersects.
As a further improvement of the present invention, it is referred to embodiment hereof, when to be located at transformer winding outermost for secondary windings
When layer, the bead portion of L shape crimping is located at the primary side PIN.
When secondary windings is in the middle layer of transformer winding, the bead portion of L shape crimping may also be located at simultaneously just
The grade side PIN and the secondary side PIN, with specific reference to the site assessments that will directly intersect.Embodiment hereof L shape bead portion is located at just
The side grade PIN.
The present invention also provides a kind of adhesive tape flanging processes of isolating transformer primary and secondary, comprising the following steps:
Step 1: according to production material demand analysis, the processing before producing to the material that need to be processed prepares and stock,
Three layer insulation wire, enameled wire, skeleton, isolated insulation adhesive tape, layer insulation adhesive tape are got out, the width of isolated insulation adhesive tape is greater than
The groove width of skeleton, isolated insulation adhesive tape are the layer insulation adhesive tape widened；
Step 2: trimming processing being carried out to isolated insulation adhesive tape with automatic adhesive tape cutting machine, in the width of isolated insulation adhesive tape
Direction is cut out can be with the notch of the at L-shaped crimping of shape, convenient for shape at L-shaped crimping in side when the coiling of isolated insulation adhesive tape；
Step 3: using enameled wire, layer insulation adhesive tape coiling multilayer armature winding；
Step 4: armature winding coiling is completed, the isolated insulation adhesive tape coiling adhesive tape layer handled with process trimming, and will be cut
Rim portion carries out L shape crimping along the width direction of isolated insulation adhesive tape, and armature winding is isolated by the bead portion of L shape crimping
The conducting wire of conducting wire, secondary windings avoids the conducting wire of armature windingWithThe conducting wire of secondary windings directly contacts intersection；
Step 5: using three layer insulation wire coiling secondary windings, then with layer insulation adhesive tape around the outer layer of complete secondary windings.
As a further improvement of the present invention, further include step 6: the end of a thread of each foot position upper fixed line being cut, by transformation
Device foot position is put into tin melting furnace wicking, carries out upper tin to the line wound on foot position and fixes, and is allowed to electrically lead with each connection PIN foot
It is logical, complete spooling step.
As a further improvement of the present invention, in step 2, isolated insulation adhesive tape is circleDiskThe winding of shape, with winding
The center of circle is starting point, using the radial direction of winding as trimming direction, around the circumferential at interval of certain angle of winding, carries out a trimming.
As a further improvement of the present invention, in step 2, trimming depth is exhausted for the width and interlayer of isolated insulation adhesive tape
The difference of the width of edge adhesive tape.
As a further improvement of the present invention, the groove width of skeleton is 8.7mm, and the width of layer insulation adhesive tape is 8.8mm, every
Width from insulating tape is 9.8mm, and in step 2, trimming depth is 1mm.
As a further improvement of the present invention, in step 3, corresponding skeleton is assembled on coil winding machine by direction, by around
Group picture requires and the position coiling of transformer foot, with enameled wire coiling armature winding, with layer insulation adhesive tape separate it is adjacent it is primary around
Group.
As a further improvement of the present invention, in step 4,When secondary windings is in transformer winding outermost layer,L shape volume
The bead portion on side is located at the primary side PIN.
As a further improvement of the present invention, in steps of 5, the coiling direction of three layer insulation wire be from the secondary side PIN to
The primary side PIN.
The beneficial effects of the present invention are: through the above scheme, armature winding that transformer may be intersected, secondary windings it
Between layer insulation adhesive tape directly carry out the processing of L shape crimping, by the bead portion of L shape crimping be isolated armature winding conducting wire,
The conducting wire of secondary windings avoids the conducting wire of armature windingWithThe conducting wire of secondary windings directly contacts intersection, avoids increasing additionally
Process and security isolation manually is carried out with the technology mode of Teflon casing or reflexed adhesive tape, to simplify process, promotes effect
Rate and reduction cost of labor, are also applied for automated production.
Detailed description of the invention
Fig. 1 is a kind of transformer production of the adhesive tape flanging process of isolating transformer primary and secondary of the present invention around drawing.
Fig. 2 is a kind of lateral internal anatomy of the adhesive tape flanging process of isolating transformer primary and secondary of the present invention.
Fig. 3 is a kind of three-dimensional structure diagram of the adhesive tape flanging process of isolating transformer primary and secondary of the present invention.
Fig. 4 is a kind of structure of the automatic cutter of adhesive tape of the adhesive tape flanging process of isolating transformer primary and secondary of the present invention
Figure.
Fig. 5 is after a kind of isolated insulation adhesive tape of the adhesive tape flanging process of isolating transformer primary and secondary of the present invention carries out trimming
Effect picture.
Fig. 6 is that Fig. 5 is a kind of isolated insulation adhesive tape trimming of the adhesive tape flanging process of isolating transformer primary and secondary of the present invention
The effect picture being unfolded afterwards.
Specific embodiment
The invention will be further described for explanation and specific embodiment with reference to the accompanying drawing.
The purpose of the present invention is being directed to the deficiency of existing processing technology, propose a kind of simple process, save it is artificial, reduce at
This, the layer insulation adhesive tape between primary and secondary winding that transformer may intersect directly is carried out L by the processing technology of high production efficiency
The processing of shape crimping, the bead portion of L shape crimping are the directly contact intersection that can avoid primary and secondary winding conducting wire, Lai Jinhang transformer
The isolating and protecting of primary and secondary simultaneously authorizes qualified Safety Approval laboratory to be confirmed as effective measures through country, from without in addition
Increase and manually carries out traditional set Teflon casing off or manual reflexed adhesive tape isolation.
By taking the design of transformer winding of attached drawing 2 as an example, N1 layer in attached drawing 1, N2 layers, N3 layers are armature winding 2, and N4 is
Secondary windings 5, by Security standard evaluations, N4 layers of secondary windings 4 and N1, N2, N3 layers of armature winding 2 may in the side PIN1-5
Directly intersect, the production of transformer coiling stage process need to increase quarantine measures and avoid intersecting, and to N3, the zone isolation between N4 is exhausted
Edge adhesive tape carries out the secondary windings 4 that the processing of L crimping has the function that N4 layers of isolation in the primary side PIN1-5.
By taking attached drawing 1 to 6 as an example, to achieve the above object, the present invention provides a kind of tape roll of isolating transformer primary and secondary
Side technique, transformer include three layers of armature winding 2 and a hierarchical level winding 5, respectively N1, N2, N3 layer, all use enameled wire around
System, N4 layer are secondary windings 5, and secondary windings 5 is three layer insulation wire coiling, need between each winding layers to use layer insulation adhesive tape every
It opens.It now needs to carry out the coiling of adhesive tape flanging process to this example transformer, to meet safety standard requirement, the specific steps are as follows:
Step 1, stock, including skeleton 2, the groove width of skeleton 2 are prepared to the raw material that transformer winding in this example is processed
8.7mm, diameter 0.18mm；For the enameled wire of coiling armature winding 2, for the three layer insulation wire of coiling secondary windings 5, diameter
0.5mm, the layer insulation adhesive tape 6 with 8.8mm width similar in groove width, the isolated insulation adhesive tape 4 of 9.8mm width, isolated insulation
Adhesive tape 4 is the layer insulation adhesive tape 6 widened.
Step 2, it because the interlayer adhesive tape of the armature winding 2 to N3 layers need to carry out L shape crimping, needs in advance to for this layer
The isolated insulation adhesive tape 4 of 9.8mm wide carries out trimming processing.
The isolated insulation adhesive tape 4 of the entire volume of 9.8mm wide is placed horizontally at automatic adhesive tape cutting machine as shown in Figure 4
It carries out horizontal fixed in gummed paper fixed disk 7, is cutter disc 8 right above gummed paper fixed disk 7, positioned vertical 3 is water on cutter disc 8
At 120 degree of cutter 9, the rise and fall band of cutting knife cylinder 10 is respectively controlled by automatic adhesive tape cutting machine in house software for in-plane
Dynamic cutter 9 moves up and down, and cuts to isolated insulation adhesive tape 4, while lower section gummed paper fixed disk 7 drives isolated insulation adhesive tape 4
Every cutting once just rotates by a certain angle, so that entire isolated insulation adhesive tape 4 be enable uniformly to be cut.In automatic adhesive tape cutting machine
The angle that cutter 9 moves up and down the number of cutting and moving distance and gummed paper fixed disk 7 rotate every time can be set.Thus to control
Make the depth dimensions of cutting, the knife number of cutting.
As required adhesive tape depth of cut 1mm, several 120 knives of cutter in this example, the angle rotated every time is 3 degree.After cutting
Effect picture such as Fig. 5, shown in Fig. 6, the isolated insulation adhesive tape 4 of layer 9.8mm wide, the depth of notch 41 is 1mm.
Step 3, start to carry out transformer winding, skeleton 1 is assembled on coil winding machine, as shown in Figures 1 to 3, uses diameter
0.18mm enameled wire enters smooth close of line from foot position 3 and forms N1 layers of armature winding 2 around 118 circles, after hang back PIN5, so
Afterwards along totally 1 layer of layer insulation adhesive tape 6 of 1 slot position width packet 8.8mm wide of skeleton, layer insulation adhesive tape 6 need to be wrapped up smooth.It is same to use
0.18mm enameled wire start to carry out along 1 slot position of skeleton after PIN4 is fixed it is uniform dissipate around 9 circles, the cutting enameled wire line after complete
Tail, line tail do not retract fixation vacantly, and then along totally 2 layers of layer insulation adhesive tape 6 of 1 slot position width packet 8.8mm wide of skeleton, interlayer is exhausted
Edge adhesive tape 6 need to be wrapped up smooth.N1, N2 layers of coiling are completed.
Step 4, it connects, is dissipated after first being fixed on the PIN2 of skeleton 1 with diameter 0.18mm enameled wire along slot position even uniform
Be withdrawn on PIN4 after 10 circles it is fixed, then with the 4 coiling interlayer of isolated insulation adhesive tape by trimming processing of 9.8mm wide every
From adhesive tape, 4, isolated insulation adhesive tape are pulled out, is first leaned under PIN6-10 side channel position edge patch with untrained adhesive tape side, then edge
Slot position depresses adhesive tape from the side PIN6-10 to PIN1-5 side direction, is allowed to be close to N3 layers, in this way 2 layers of coiling, because of isolated insulation
4 width of adhesive tape about 1mm than groove width, and handled by trimming, the 1mm adhesive tape more than groove width can edge under the action of coiling power
The side skeleton slot position edge PIN1-5 is in upright state, forms L shape crimping as shown in Figure 2.
Step 5: first right in PIN6 foot upper fixed line head with N4 layers of three layer insulation wire coiling of secondary windings 5 of line footpath 0.5mm
It is smooth close around 11 one layer of coiling of circles from the secondary side PIN6-10 to the primary side PIN1-5 along skeleton 1 afterwards, it, will be three-layer insulated after complete
Line is fixed through the straight PIN10 foot that retracts of 1 cabling channel of skeleton, then with the layer insulation adhesive tape 6 of 8.8mm wide along the complete N4 of slot position coiling
3 layers of insulation rubber band of layer.Because the side PIN1-5 have the L shape crimping of about 1mm high along PIN1-5 side channel position edge setting be isolated it is each just
Grade enameled wire enters and leaves line, will not there is direct intersect with three layer insulation wire.
Step 6: after the completion of above each winding and adhesive tape coiling, the end of a thread of each foot position upper fixed line being cut, by transformer
Foot position is put into tin melting furnace wicking, carries out upper tin to the line wound on foot position and fixes.Be allowed to each connection PIN foot energy electrically conducting,
Complete spooling step.
A kind of adhesive tape flanging process of isolating transformer primary and secondary provided by the invention, directly in coiling interlayer adhesive tape,
The processing of L shape crimping is carried out with adhesive tape, the security isolation between Lai Jinhang primary and secondary winding avoids the direct intersection of primary and secondary conducting wire,
It avoids increasing additional process and manually carries out security isolation with the technology mode of Teflon casing or reflexed adhesive tape, thus simple
Chemical industry sequence, raising efficiency and reduction cost of labor, while present invention process is also applied for automated production.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of adhesive tape flanging process of isolating transformer primary and secondary, it is characterised in that: by transformer may intersect it is primary around
Layer insulation adhesive tape between group and secondary windings directly carries out the processing of L shape crimping, is isolated just by the bead portion of L shape crimping
The conducting wire of the grade conducting wire of winding, secondary windings, avoids the conducting wire of armature winding from directly contacting with the conducting wire of secondary windings and intersects.
2. the adhesive tape flanging process of isolating transformer primary and secondary according to claim 1, it is characterised in that: work as secondary windings
When being in the outermost layer of transformer winding, the bead portion of L shape crimping is located at the primary side PIN；When secondary windings is in transformer
When the middle layer of winding, the bead portion of L shape crimping is located at the primary side PIN and the secondary side PIN simultaneously.
3. a kind of adhesive tape flanging process of isolating transformer primary and secondary, which comprises the following steps:
Step 1: according to production material demand analysis, the processing before producing to the material that need to be processed prepares and stock, prepares
The width of good three layer insulation wire, enameled wire, skeleton, isolated insulation adhesive tape, layer insulation adhesive tape, isolated insulation adhesive tape is greater than skeleton
Groove width, isolated insulation adhesive tape is the layer insulation adhesive tape widened；
Step 2: trimming processing being carried out to isolated insulation adhesive tape with automatic adhesive tape cutting machine, in the width direction of isolated insulation adhesive tape
Cutting out can be with the notch of the at L-shaped crimping of shape, convenient for shape at L-shaped crimping in side when the coiling of isolated insulation adhesive tape；
Step 3: using enameled wire, layer insulation adhesive tape coiling multilayer armature winding；
Step 4: armature winding coiling is completed, with the isolated insulation adhesive tape coiling adhesive tape layer by trimming processing, and by trimming portion
Divide the width direction along isolated insulation adhesive tape to carry out L shape crimping, leading for armature winding is isolated by the bead portion of L shape crimping
The conducting wire of line, secondary windings avoids the conducting wire of armature winding from directly contacting with the conducting wire of secondary windings and intersects；
Step 5: using three layer insulation wire coiling secondary windings, then with layer insulation adhesive tape around the outer layer of complete secondary windings.
4. the adhesive tape flanging process of isolating transformer primary and secondary according to claim 3, it is characterised in that: further include step
6: the end of a thread of each foot position upper fixed line being cut, transformer foot position is put into tin melting furnace wicking, the line wound on foot position is carried out
Upper tin is fixed, and is allowed to and each connection PIN foot energy electrically conducting, completion spooling step.
5. the adhesive tape flanging process of isolating transformer primary and secondary according to claim 3, it is characterised in that: in step 2,
Isolated insulation adhesive tape is discoidal winding, using the center of circle of winding as starting point, using the radial direction of winding as trimming direction, around winding
Circumferentially at interval of certain angle, a trimming is carried out.
6. the adhesive tape flanging process of isolating transformer primary and secondary according to claim 3, it is characterised in that: in step 2,
Trimming depth is the difference of the width of isolated insulation adhesive tape and the width of layer insulation adhesive tape.
7. the adhesive tape flanging process of isolating transformer primary and secondary according to claim 3, it is characterised in that: in step 1,
The groove width of skeleton is 8.7mm, and the width of layer insulation adhesive tape is 8.8mm, and the width of isolated insulation adhesive tape is 9.8mm, in step 2
In, trimming depth is 1mm.
8. the adhesive tape flanging process of isolating transformer primary and secondary according to claim 3, it is characterised in that: in step 3,
Corresponding skeleton is assembled on coil winding machine by direction, it is primary with enameled wire coiling by around group picture requirement and the position coiling of transformer foot
Winding separates adjacent armature winding with layer insulation adhesive tape.
9. the adhesive tape flanging process of isolating transformer primary and secondary according to claim 3, it is characterised in that: in step 4,
Secondary windings is in transformer winding outermost layer, and the bead portion of L shape crimping is located at the primary side PIN.
10. the adhesive tape flanging process of isolating transformer primary and secondary according to claim 3, it is characterised in that: in step 5
In, the coiling direction of three layer insulation wire is from the secondary side PIN to the primary side PIN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811388197.5A CN109494073A (en) | 2018-11-21 | 2018-11-21 | A kind of adhesive tape flanging process of isolating transformer primary and secondary |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811388197.5A CN109494073A (en) | 2018-11-21 | 2018-11-21 | A kind of adhesive tape flanging process of isolating transformer primary and secondary |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109494073A true CN109494073A (en) | 2019-03-19 |
Family
ID=65697131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811388197.5A Pending CN109494073A (en) | 2018-11-21 | 2018-11-21 | A kind of adhesive tape flanging process of isolating transformer primary and secondary |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109494073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420357A (en) * | 2020-10-26 | 2021-02-26 | 东莞市优琥电子科技有限公司 | Integrated transformer and electrical equipment |
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| CN207397912U (en) * | 2017-09-21 | 2018-05-22 | 昆山普奥电子科技有限公司 | The preposition anti-package glue insulation of secondary coil enhances I-shaped skeleton transformer |
| CN207503791U (en) * | 2017-11-08 | 2018-06-15 | 旭源电子（珠海）有限公司 | A kind of transformer and LED drive power |
| CN208045291U (en) * | 2017-12-28 | 2018-11-02 | 广州金升阳科技有限公司 | A kind of insulation gummed paper |
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|---|---|---|---|---|
| EP1054418A1 (en) * | 1999-05-18 | 2000-11-22 | France Transfo (S.A.) | Low voltage winding for electrical transformer and method for producing same |
| US20050179515A1 (en) * | 2004-02-13 | 2005-08-18 | Kwan Chiu Radio Mfg., Co., Ltd. | Transformer insulation film structure |
| CN201741554U (en) * | 2010-07-29 | 2011-02-09 | 南京立业电力变压器有限公司 | Novel transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112420357A (en) * | 2020-10-26 | 2021-02-26 | 东莞市优琥电子科技有限公司 | Integrated transformer and electrical equipment |
| CN112420357B (en) * | 2020-10-26 | 2022-08-16 | 东莞市优琥电子科技有限公司 | Integrated transformer and electrical equipment |
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