CN103035364A - Electronic transformer - Google Patents
Electronic transformer Download PDFInfo
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- CN103035364A CN103035364A CN2012105857055A CN201210585705A CN103035364A CN 103035364 A CN103035364 A CN 103035364A CN 2012105857055 A CN2012105857055 A CN 2012105857055A CN 201210585705 A CN201210585705 A CN 201210585705A CN 103035364 A CN103035364 A CN 103035364A
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- 238000004804 winding Methods 0.000 claims abstract description 32
- 238000002955 isolation Methods 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011162 core material Substances 0.000 description 85
- 239000002184 metal Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920001342 Bakelite® Polymers 0.000 description 3
- 239000004637 bakelite Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005477 standard model Effects 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 238000010618 wire wrap Methods 0.000 description 1
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Abstract
The invention discloses an electronic transformer, which comprises a winding framework (1) and a magnetic core (3), wherein the winding framework (1) is provided with a winding terminal (17); the magnetic core (3) is arranged on the winding framework (1); the electronic transformer is characterized by also comprising an insulating isolating cover (2) with an opening (2a), wherein a cover body of the insulating isolating cover (2) covers an exposed surface of the magnetic core (3); the winding framework (1) is locally exposed from the opening (2a) of the isolating cover (2); and the winding terminal (17) is arranged on an exposed part of the winding framework (1). The electronic transformer has the advantages of small and skillful size, simple manufacturing process and capability of guaranteeing sufficient electric safety distances between the magnetic core and the winding terminal and between the transformer and other electronic devices on a PCB (Printed Circuit Board) substrate.
Description
Technical field
The present invention relates to a kind of electronic transformer, this electronic transformer is mainly used in Switching Power Supply and the modular power source.
Background technology
Along with the particularly lifting of the power density of modular power source of Switching Power Supply, the transformer as its core power device has detailed hard and fast rule in safe distance aspects such as electric clearance and creepage distances.Simultaneously volume size is also wished as much as possible future development towards miniaturization.
Existing transformer generally is comprised of skeleton, coil, magnetic core.Be wound with a plurality of coils on the skeleton, the skeleton both sides are respectively arranged with terminal board, a plurality of metal terminals for coil windings and circuit board electrical connection of plug-in mounting on the terminal board.Magnetic core makes up in opposite directions by the axis through hole of skeleton, and is seated on the terminal board of skeleton.In the magnetic core junction and magnetic core and skeleton junction fix with resin bonding, the magnetic core periphery is twined the insulation gummed paper and is protected.
For satisfying creepage distance requirement in the safety, mainly protect optimization for the magnetic core of transformer and the creepage distance between the coiling metal terminal in the following ways in the prior art:
1, the terminal board of skeleton is elongated, increases, perhaps advance to increase baffle plate at terminal board, such as number of patent application: 200810071190.0 technical scheme; Or transformer simply adopts the form of fly line, with this increase between coil and coil and magnetic core and coiling metal terminal between distance.But these modes all are unfavorable for the volume miniaturization of transformer itself, even have increased processed complex degree and the labor hour of transformer.
2, changing the magnetic core pattern guarantees.Such as patent documentation: Japan is real to open flat 6-9120 communique, this scheme involves the variation of magnetic core pattern, need again die sinking because being different from the industrywide standard model, so that core size is irregular, cause the designing and calculating of magnetic core parameter and processing to become very complicated after the magnetic core modal shift.
More outstanding is, when above-mentioned transformer is installed on the PCB substrate and the electronic device of PCB circuit board periphery can't guarantee effective safe distance, the cloth Board position of electronic device all needs away from transformer particularly away from magnetic core.For solve this safe distance problem, usually be exactly with the insulation gummed paper transformer periphery to be comprised all proper parcels of doing sealed type of magnetic core, or between transformer and peripheral electronic device, increase by a circle insulating trip, transformer magnetic core and electronic device are kept apart fully.But by the mode labor intensive man-hour of parcel gummed paper, increase insulating trip, increase the technology difficulty of transformer and even machine system.
Summary of the invention
It is small and exquisite to the purpose of this invention is to provide a kind of volume, and the simple Integral electronic transformer of manufacturing process can make between magnetic core and the winding terminal and has enough electrical safety distances on transformer and the PCB substrate between other electronic devices.
The objective of the invention is to realize by following technical measures:
A kind of electronic transformer comprises the coil rack that is provided with the winding terminal and the magnetic core that is installed on the coil rack, and it is characterized in that: described electronic transformer also comprises the insulated isolation cover that is provided with opening; The cover body of described cage is coated on the exposed surface of described magnetic core, and described coil rack part exposes from the opening of cage, and described winding terminal is arranged on the position that coil rack exposes.The magnetic core different according to Transformer Selection, such as EI, ER, EE, ETD, EPC or U-shaped magnetic core etc., the shape that insulated isolation cover respective design Cheng Yuqi is suitable and being coated on the magnetic core, so that separated by insulated isolation cover between winding terminal and the magnetic core, also separated by insulated isolation cover between other electronic devices on magnetic core and the PCB substrate simultaneously, increasing the electrical safety distance between them, and transformer is able to dispel the heat by the opening on the cage.
In order more to be conducive to the heat radiation of electronic transformer, as a kind of feature of the present invention, described cage also has the window for the electronic transformer heat radiation; The coil windings that is wound on the described coil rack is exposed from described window.
For the magnetic core parameter designing that makes transformer optimize the most with simply, as preferred implementation of the present invention, described magnetic core is a day font magnetic core, described coil rack is sleeved on the newel of this day font magnetic core, the frame columns of day font magnetic core is exposed outside coil rack, the cover body of described cage has the internal face suitable with the outer surface of described day font magnetic core frame columns, and this internal face is close on the outer surface of described day font magnetic core frame columns.
In order to make more miniaturization of electronic transformer, reduce the shared space of cage, as a kind of preferred implementation of the present invention, described cage is the cover body with four covers, four covers of this cover body link to each other successively with " mouth " font and surround internal cavity, and the vertical sectional shape of each cover be breach towards described internal cavity " [" shape, the frame columns of described day font magnetic core is contained in the described internal cavity.
In order to make electronic transformer have more compact structure, it is minimum that volume reaches, and simplify the packaging technology of electronic transformer to reduce cost, execution mode as the present invention's recommendation, described day font magnetic core is formed by the E type magnetic core combinations of pairs of two standards, described coil rack comprises spiral section and two supporting seats, described spiral section is the cylindrical shell with hollow cavity, bottom, the two ends of this cylindrical shell respectively laterally the below extend the step-like supporting seat of two-stage, wherein higher level and subordinate's step are respectively brace table and the terminal board of supporting seat, described coil windings is wound in the spiral section, the center pillar of described two magnetic cores enters the described hollow cavity from the two ends plug-in mounting of spiral section respectively, the foundation difference part support of two magnetic cores is on two brace tables, and foundation not support leaves the gap respectively and between two terminal boards in the part on the brace table, two side columns of two magnetic cores are respectively in the docking of the both sides of spiral section, the lower flange of two relative covers of described cage is installed in respectively in described two gaps and covers on the lower surface of foundation of two magnetic cores, the side of these two relative covers and upper flange cover respectively on the side surface and upper surface of foundation of two magnetic cores, the lower flange of the cover that two other is relative, side and upper flange cover respectively the lower surface of two side columns of two magnetic cores, on side surface and the upper surface.This cage is the comprehensive magnetic core that comprehensively wraps from top to bottom, left and right, front and rear, thereby can realize good isolation.
In order to make more stable being installed on the coil rack of magnetic core, as a kind of improvement of the present invention, the length of described terminal board is slightly larger than the radial width of described spiral section, and two side columns of described two magnetic cores respectively support exceed on the part of spiral section at two terminal boards.
As one embodiment of the present invention, several described winding terminals are inserted into respectively the bottom of described two terminal boards side by side.
As a kind of improvement of the present invention, the bottom of described two terminal boards also has been arranged side by side respectively several trapezoid boss, and the inclined-plane of this trapezoid boss is towards described winding terminal.The effect of this trapezoid boss is uneven in order to prevent the inconsistent installation that causes of height behind the metal terminal coiling wicking, guarantees the coplane degree of transformer.
For cage and coil rack are fixed, as one embodiment of the present invention, described two terminal boards are provided with boss at lateral surface respectively, and point has glue between described boss and the cage.
For the ease of the assembling of electronic transformer, as a kind of improvement of the present invention, described cage is engaged by two halfbodies and forms.
In order to make cage wrap more closely magnetic core, as a kind of improvement of the present invention, the junction surface of the halfbody of one of them described cage is provided be used to the jacket that covers the joint gap between described two halfbodies.
Compared with prior art, the present invention has following beneficial effect:
The first, the present invention in the situation that does not increase volume of transformer, by cage assembling, effectively increased the safety distance between magnetic core and wire wrap terminal;
The second, electronic transformer of the present invention is simple in structure, and is easy to assembly, and the effectively supplementary insulation protection of the peripheral encapsulate paper of instead of transformers reduces the machining period of transformer and makes complexity;
The 3rd, because the comprehensive magnetic core that wrapped up of cage when electronic transformer of the present invention is installed on the PCB circuit board, can effectively guarantee the electric clearance between magnetic core and other electronic units, saved the PCB space;
The 4th, electronic transformer of the present invention adopts the magnetic core of industrywide standard model, and is all very convenient for aspects such as the characteristics design of core material, processing, buyings, and helps to reduce the cost of electronic transformer;
The 5th, the coil rack of electronic transformer of the present invention and cage adopt bakelite or the resin injection molding of insulating properties, process very simple.
Description of drawings
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the coil rack schematic diagram of the preferred embodiment of the present invention;
Fig. 2 is the coil rack bottom schematic view of the preferred embodiment of the present invention;
Fig. 3 is the cage schematic diagram of the preferred embodiment of the present invention;
Fig. 4 is the cage split explanation schematic diagram of the preferred embodiment of the present invention;
Fig. 5 is the assembling schematic diagram of the preferred embodiment of the present invention;
Fig. 6 is the stereogram after the preferred embodiment of the present invention assembling;
Fig. 7 is the three-dimensional generalized section of the transformer of the preferred embodiment of the present invention;
Fig. 8 is the transformer A-A generalized section of the preferred embodiment of the present invention;
Fig. 9 is the local enlarged diagram of Fig. 8;
Figure 10 is the transformer B-B generalized section of the preferred embodiment of the present invention.
Embodiment
To shown in Figure 10, the electronic transformer of the preferred embodiment for the present invention comprises coil rack 1, cage 2 and magnetic core 3 such as Fig. 1, and it has adopted horizontally-mounted frame mode, with the miniaturization size design requirement of maximum realization modular power source.
Wherein, as depicted in figs. 1 and 2, the coil rack 1 of this preferred embodiment is by the bakelite with insulating properties or resin injection molding, it comprises spiral section 10 and two supporting seats, spiral section 10 is for having the cylindrical shell of hollow cavity 12, the shape of cross section of this cylindrical shell is square, and bottom, its two ends respectively laterally the below extend the step-like supporting seat of two-stage, wherein higher level and subordinate's step are respectively brace table 14 and the terminal board 15 of supporting seat, the length D1 of terminal board 15 is slightly larger than the radial width D2 of spiral section 10, and terminal board 15 is provided with boss 13, several trapezoid boss 16, several are used for the metal winding terminal 17 with the electrical connection of PCB substrate, boss 13 is arranged on the end face middle part, the outside of terminal board 15, several winding terminals 17 are inserted into the bottom of terminal board 15 side by side, several trapezoid boss 16 side by side and be vertically set on the bottom surface of terminal board 15 and its inclined-plane towards winding terminal 17.
Extremely shown in Figure 5 such as Fig. 3, the cage 2 of this preferred embodiment is by bakelite or the resin injection molding of insulating properties, it is engaged by the first halfbody 21 and the second halfbody 22 and forms, the side width 211 of the first halfbody 21 and the second halfbody 22 and side width 221 all are not less than the thickness D3 of the foundation 32 of magnetic core 3, their base width 212 and base width 222 all are not less than the thickness D4 of the side column 33 of magnetic core 3, the first halfbody 21 and the second halfbody 22 have respectively hollow cavity 213 and 225, the junction surface 224 of the second halfbody 22 is provided with jacket 223, these two halfbodies are after the junction surface 224 of the junction surface 214 of the first halfbody 21 and the second halfbody 22 is joined together, and the joint gap that becomes between a cover body with four covers and two halfbodies is covered by jacket 223.Two halfbodies engage four covers of the cover body that forms with " mouth " font successively continuous internal cavity 23 that surrounds, the hollow cavity 213 and 225 that is above-mentioned two halfbodies is combined into this internal cavity 23, and the vertical sectional shape of each cover is breach towards " [" shape of internal cavity 23, namely wherein two relative covers by side 25 and respectively by on the side 25, the extended upper flange 26 of lower vertical and lower flange 24 form, two other relative cover is by side 28 and respectively by on the side 28, the extended upper flange 29 of lower vertical and lower flange 27 form, on this cover body, the square breach of bottom is respectively window 2b and the opening 2a that cage 2 is used for the electronic transformer heat radiation.
As shown in Figure 5, the magnetic core 3 of this preferred embodiment is the ferrite core 3 of the standard EFD model of two pairings, the magnetic core of this EFD model is a kind of of E type magnetic core, and it is comprised of foundation 32 and the side column 33 that is arranged on the center pillar 31 at foundation 32 middle parts and is separately positioned on foundation 32 two ends and has an E shape cross section.The width of the above-mentioned brace table 14 of this preferred embodiment is set to half of thickness of the foundation 32 of magnetic core 3, and the height of brace table 14 is set to 0.8～1.0mm.
When the electronic transformer of this preferred embodiment is assembled, at first, several coil windings 11 are wound in the spiral section 10 of coil rack 1, and their lead-in wire is wrapped in respectively on several winding terminals 17 of terminal board 15 bottoms, through forming electrical connection with winding terminal 17 behind the scolding tin, twine respectively insulating tape between several coil windings 11; Then, two magnetic cores 3 are installed in along the direction of arrow in the figure the day font magnetic core that is paired on the coil rack 1, wherein the center pillar 31 of two magnetic cores 3 enters in opposite directions pairing assembling the hollow cavity 12 from the two ends plug-in mounting of spiral section 10 respectively, the foundation 32 difference part supports of two magnetic cores 3 are on two brace tables 14, and foundation 32 not support leaves the gap respectively and between two terminal boards 15 in the part on the brace table 14, in fact is exactly to have formed the gap between the unsettled part of foundation and the terminal board.Two side columns 33 of two magnetic cores 3 respectively support exceed on the part of spiral section 10 at two terminal boards 15, and respectively in the docking of the both sides of spiral section 10, carry out the end face 34 usefulness epoxy glue of two side columns 33 of two magnetic cores 3 bonding, so that foundation 32 and the side column 33 of two magnetic cores 3 after the assembling are looped around outside the spiral section 10, form closed magnetic circuit; At last, the first halfbody 21 and the second halfbody 22 are assembled along the direction of arrow in the figure, they combine at the middle axial plane of spiral section 10 becomes the cover body with four covers, wherein the lower flange 24 of two relative covers of the spiral section that is arranged in 10 end positions of this cover body that is combined into is installed in respectively above-mentioned two gaps, be support on the terminal board 15 and cover on the lower surface of foundation 32 of two magnetic cores 3, and side 25 and upper flange 26 cover respectively on the side surface and upper surface of foundation 32 of two magnetic cores 3, and be positioned at the lower flange 27 of two relative covers of spiral section 10 both sides, side 28 and upper flange 29 cover respectively the lower surface of two side columns 33 of two magnetic cores 3, on side surface and the upper surface, the coil windings 11 that is wound on the coil rack 1 is exposed from the window 2b on the cage 2, so that the cover body of cage 2 is coated on the exposed surface of magnetic core 3 fully, cage 2 from about, about, the comprehensive magnetic core 3 that comprehensively wraps in front and back, thereby can realize good isolation, and be arranged on the top position that jacket 223 on the second halfbody 22 just in time is positioned at boss 13, at these boss 13 point glue cage 2 is fixed on the coil rack 1; So far, said modules is assembled into electronic transformer as shown in Figure 6.
On the cutaway view from Fig. 7 to this preferred embodiment electronic transformer shown in Figure 10 as can be known, three from top to bottom, left and right, front and rear orientation of cage 2 wrap magnetic core 3 comprehensively, thereby so that between the magnetic core 3 of transformer own and the metal terminal 17 and the safe distance of transformer magnetic core 3 and PCB substrate electronic device be effectively guaranteed, thereby better meet the requirement of product safety.
The present invention does not limit to and above-mentioned embodiment; according to foregoing; ordinary skill knowledge and customary means according to this area; do not breaking away under the above-mentioned basic fundamental thought of the present invention prerequisite; the present invention can also make the equivalent modifications of other various ways; replace or change; for example the mounting means with transformer coil frame changes vertical installation into by horizontal type; perhaps the assembling direction of cage changes the two ends assembling by spiral section into; perhaps magnetic core is selected the general EI of industry; ER; EE; ETD; the normal ferrite magnetic cores such as EPC; they are the E type magnetic core of standard; perhaps magnetic core is selected the standard day font magnetic core of integral type; above-mentioned spiral section has mounting groove; the newel of day font magnetic core enters the coil rack from this mounting groove plug-in mounting; and after the installation plug-in mounting is complete, seal mounting groove with catch; the frame columns of day font magnetic core is exposed outside coil rack; the cover body of above-mentioned cage has the suitable internal face of outer surface with day font magnetic core frame columns; this internal face is close on day outer surface of font magnetic core frame columns; perhaps cage adopts other split mode; as one of them cover of cage can with other three cover detachable assembleds; perhaps do not adopt jacket cover two between the halfbody joint gap and directly with insulating tape this joint gap is wound up; or magnetic core is selected U-shaped; the standard magnetic cores such as annular; as long as adopt insulated isolation cover to be wrapped on the magnetic core; so that other electronic devices on magnetic core and winding terminal and the PCB substrate are separated, all drop among protection scope of the present invention.
Claims (10)
1. electronic transformer comprises the coil rack (1) that is provided with winding terminal (17) and is installed in magnetic core (3) on the coil rack (1) that it is characterized in that: described electronic transformer also comprises the insulated isolation cover (2) that is provided with opening (2a); The cover body of described cage (2) is coated on the exposed surface of described magnetic core (3), and the local opening (2a) from cage (2) of described coil rack (1) exposes, and described winding terminal (17) is arranged on the position that coil rack (17) exposes.
2. electronic transformer according to claim 1 is characterized in that: described cage (2) also has the window (2b) for the electronic transformer heat radiation; The coil windings (11) that is wound on the described coil rack (1) is exposed from described window (2b).
3. electronic transformer according to claim 2, it is characterized in that: described magnetic core (3) is a day font magnetic core, described coil rack (1) is sleeved on the newel of this day font magnetic core, the frame columns of day font magnetic core is exposed outside coil rack (1), the cover body of described cage (2) has the internal face suitable with the outer surface of described day font magnetic core frame columns, and this internal face is close on the outer surface of described day font magnetic core frame columns.
4. electronic transformer according to claim 3, it is characterized in that: described cage (2) is for having the cover body of four covers, four covers of this cover body link to each other successively with " mouth " font and surround internal cavity (23), and the vertical sectional shape of each cover be breach towards described internal cavity (23) " [" shape, the frame columns of described day font magnetic core is contained in the described internal cavity (23).
5. electronic transformer according to claim 4, it is characterized in that: described day font magnetic core is formed by E type magnetic core (3) combinations of pairs of two standards, described coil rack (1) comprises spiral section (10) and two supporting seats, described spiral section (10) is for having the cylindrical shell of hollow cavity (12), bottom, the two ends of this cylindrical shell respectively laterally the below extend the step-like supporting seat of two-stage, wherein higher level and subordinate's step are respectively brace table (14) and the terminal board (15) of supporting seat, described coil windings (11) is wound in the spiral section (10), the center pillar (31) of described two magnetic cores (3) enters the described hollow cavity (12) from the two ends plug-in mounting of spiral section (10) respectively, foundation (32) the difference part support of two magnetic cores (3) is on two brace tables (14), and foundation (32) not support leaves the gap respectively and between two terminal boards (15) in the part on the brace table (14), two side columns (33) of two magnetic cores (3) are respectively in the docking of the both sides of spiral section (10), the lower flange (24) of two relative covers of described cage (2) is installed in respectively in described two gaps and covers on the lower surface of foundation (32) of two magnetic cores (3), the side of these two relative covers (25) and upper flange (26) cover respectively on the side surface and upper surface of foundation (32) of two magnetic cores (3), the lower flange of the cover that two other is relative (27), side (28) and upper flange (29) cover respectively the lower surface of two side columns (33) of two magnetic cores (3), on side surface and the upper surface.
6. electronic transformer according to claim 5, it is characterized in that: the length (D1) of described terminal board (15) is slightly larger than the radial width (D2) of described spiral section (10), and two side columns (33) of described two magnetic cores (3) respectively support exceed on the part of spiral section (10) at two terminal boards (15).
7. electronic transformer according to claim 6, it is characterized in that: several described winding terminals (17) are inserted into respectively the bottom of described two terminal boards (15) side by side.
8. electronic transformer according to claim 7, it is characterized in that: the bottom of described two terminal boards (15) also has been arranged side by side respectively several trapezoid boss (16), and the inclined-plane of this trapezoid boss (16) is towards described winding terminal (17).
9. electronic transformer according to claim 6, it is characterized in that: described two terminal boards (15) are provided with boss (13) at lateral surface respectively, and point has glue between described boss (13) and the cage (2).
10. according to claim 1 to 9 each described electronic transformers, it is characterized in that: described cage (2) is engaged by two halfbodies and forms; The junction surface of one of them halfbody is provided be used to the jacket (223) that covers the joint gap between described two halfbodies.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210585705.5A CN103035364B (en) | 2012-12-28 | 2012-12-28 | Electronic transformer |
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|---|---|---|---|
| CN201210585705.5A CN103035364B (en) | 2012-12-28 | 2012-12-28 | Electronic transformer |
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| CN103035364A true CN103035364A (en) | 2013-04-10 |
| CN103035364B CN103035364B (en) | 2017-02-15 |
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| CN103943339A (en) * | 2014-04-14 | 2014-07-23 | 昆山达功电子有限公司 | Automatic radiating transformer |
| CN103943338A (en) * | 2014-04-14 | 2014-07-23 | 昆山达功电子有限公司 | Transformer long in service life |
| CN104616869A (en) * | 2015-02-11 | 2015-05-13 | 南京优倍电气有限公司 | Enhancement intrinsic safety transformer |
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| CN105390227A (en) * | 2015-12-22 | 2016-03-09 | 南通华兴磁性材料有限公司 | Manganese zinc ferrite magnetic core |
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| CN103943338A (en) * | 2014-04-14 | 2014-07-23 | 昆山达功电子有限公司 | Transformer long in service life |
| CN103943339B (en) * | 2014-04-14 | 2016-03-23 | 昆山达功电子有限公司 | The transformer of automatic heat radiation |
| CN104616869A (en) * | 2015-02-11 | 2015-05-13 | 南京优倍电气有限公司 | Enhancement intrinsic safety transformer |
| CN105301331A (en) * | 2015-11-24 | 2016-02-03 | 山东航天电子技术研究所 | Novel Hall sensor skeleton |
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| CN107785155A (en) * | 2016-08-25 | 2018-03-09 | 无锡市宏利逸电子有限公司 | A kind of improved transformer |
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| CN110189905A (en) * | 2018-02-22 | 2019-08-30 | 胜美达零部件和组件有限责任公司 | The method of inductance component and manufacture inductance component |
| CN110189905B (en) * | 2018-02-22 | 2022-07-19 | 胜美达零部件和组件有限责任公司 | Inductive component and method for producing an inductive component |
| US11587716B2 (en) | 2018-02-22 | 2023-02-21 | SUMIDA Components & Modules GmbH | Inductive component and method of manufacturing an inductive component |
| CN108682545A (en) * | 2018-07-04 | 2018-10-19 | 浙江和兴电子有限公司 | A kind of high voltage bearing multiwinding transformer |
| CN108682545B (en) * | 2018-07-04 | 2024-05-31 | 浙江和兴电子有限公司 | High-voltage-resistant multi-winding transformer |
| CN108847338B (en) * | 2018-07-06 | 2024-03-26 | 河南森源电气股份有限公司 | Transformer |
| CN108847338A (en) * | 2018-07-06 | 2018-11-20 | 河南森源电气股份有限公司 | A kind of transformer |
| CN110783078B (en) * | 2018-07-30 | 2023-07-14 | Tdk株式会社 | Bobbin and coil device |
| CN110783078A (en) * | 2018-07-30 | 2020-02-11 | Tdk株式会社 | Bobbin and coil device |
| CN113421738B (en) * | 2021-05-27 | 2024-02-09 | 内蒙古鄂尔多斯电子有限责任公司 | Small-volume patch common-mode inductor |
| CN113421738A (en) * | 2021-05-27 | 2021-09-21 | 内蒙古鄂尔多斯电子有限责任公司 | Small-size paster common mode inductor |
| CN114724847A (en) * | 2022-04-06 | 2022-07-08 | 扬州市职业大学(扬州开放大学) | Main shaft structure of electronic transformer winding machine |
| CN114724847B (en) * | 2022-04-06 | 2024-05-31 | 扬州市职业大学(扬州开放大学) | Main shaft structure of winding machine of electronic transformer |
| CN114823096B (en) * | 2022-06-25 | 2022-10-21 | 深圳市万志宇科技有限公司 | Electronic transformer with anti-creeping function |
| CN114823096A (en) * | 2022-06-25 | 2022-07-29 | 深圳市万志宇科技有限公司 | Electronic transformer with anti-creeping function |
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Denomination of invention: An electronic transformer Effective date of registration: 20210531 Granted publication date: 20170215 Pledgee: China Co. truction Bank Corp Guangzhou economic and Technological Development Zone sub branch Pledgor: MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2021980004183 |
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