CN113012904A - Semi-winding main transformer and winding method thereof - Google Patents

Semi-winding main transformer and winding method thereof Download PDF

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Publication number
CN113012904A
CN113012904A CN202110275201.2A CN202110275201A CN113012904A CN 113012904 A CN113012904 A CN 113012904A CN 202110275201 A CN202110275201 A CN 202110275201A CN 113012904 A CN113012904 A CN 113012904A
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CN
China
Prior art keywords
secondary side
coil
side coil
wound
magnetic core
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Pending
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CN202110275201.2A
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Chinese (zh)
Inventor
宋旭东
许文才
张魁
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Guangdong Sohoo Technology Co ltd
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Guangdong Sohoo Technology Co ltd
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Priority to CN202110275201.2A priority Critical patent/CN113012904A/en
Publication of CN113012904A publication Critical patent/CN113012904A/en
Pending legal-status Critical Current

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    • 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
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/266—Fastening or mounting the core on casing or support
    • 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
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads
    • 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
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • 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
    • 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
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • 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
    • H01F41/06—Coil winding
    • 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
    • H01F41/10—Connecting leads to windings

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

The invention relates to the technical field of transformers, in particular to a half-wound main transformer which comprises a mounting seat and a magnetic core arranged on the mounting seat, wherein one side of the mounting seat is a primary side and is provided with a plurality of primary side pins, the other side of the mounting seat is a secondary side and is provided with a plurality of secondary side pins, and the half-wound main transformer also comprises a plurality of primary side coils, a plurality of first secondary side coils and a plurality of connecting wires; the invention changes the winding method of the first secondary side coil and matches with the use of the connecting wire, so that the homonymous end and the heteronymous end of the first secondary side coil are not positioned at the same side of the mounting seat, thereby obtaining non-integer turns and meeting special voltage change requirements.

Description

Semi-winding main transformer and winding method thereof
Technical Field
The invention relates to the technical field of transformers, in particular to a half-winding main transformer and a winding method thereof.
Background
In a commercial transformer, the turn ratio of the primary side and the secondary side is usually an integer ratio, such as N: m, N and M are all natural numbers, but, sometimes the integer ratio can not reach the transformation of the voltage of target certainly, therefore need set up a plurality of transformers or a plurality of coils, can reach the demand through complicated winding process again, and this kind of design for the transformer is complicated, increases the volume and the weight of transformer, makes the circuit structure of using even more complicated with being connected of transformer, therefore the structure of conventional transformer can not satisfy special vary voltage demand.
Disclosure of Invention
The invention provides a half-winding main transformer and a winding method thereof aiming at the problems in the prior art, and realizes the non-integer turns ratio of the transformer by changing the winding method of a first secondary side coil and matching with the use of a connecting wire, thereby obtaining the special transformation requirement.
In order to solve the technical problems, the invention adopts the following technical scheme: a half-wound main transformer comprises a mounting seat and a magnetic core arranged on the mounting seat, wherein one side of the mounting seat is a primary side and is provided with a plurality of primary side pins, the other side of the mounting seat is a secondary side and is provided with a plurality of secondary side pins, and the half-wound main transformer further comprises a plurality of primary side coils, a plurality of first secondary side coils and a plurality of connecting wires; the primary side coil is wound on the periphery of the magnetic core, and two ends of the primary side coil are respectively and electrically connected with different primary side pins; the homonymous ends of the first secondary side coils are connected with the secondary side pins, the homonymous ends are used as starting points, the first secondary side coils wind the magnetic core for a plurality of turns and return to the starting points, then the first secondary side coils continue to rotate around the magnetic core until the synonym ends of the first secondary side coils are located on the primary side of the mounting base, and the synonym ends of the first secondary side coils are electrically connected with the secondary side pins through the connecting wires.
Preferably, the half-wound main transformer further comprises a plurality of second secondary side coils, the dotted ends of the plurality of second secondary side coils are arranged on the primary side of the mounting seat, and the dotted ends of the second secondary side coils are electrically connected with the secondary side pins through the connecting wires; the synonym end of the second secondary side coil is electrically connected with the secondary side pin, and the second secondary side coil is wound on the periphery of the magnetic core.
Preferably, the number of turns of the first secondary side coil is N +0.5, where N is a natural number.
Preferably, the number of turns of the second secondary side coil is N +0.5 turns, where N is a natural number.
Preferably, the connecting wire comprises a conductor and an insulating sleeve sleeved on the periphery of the conductor, and two ends of the conductor are exposed outside the insulating sleeve.
Preferably, the half-wound main transformer further comprises a plurality of third secondary side coils, the third secondary side coils surround the periphery of the magnetic core, and two ends of the third secondary side coils are electrically connected with different secondary side pins respectively.
Preferably, one end of the connecting wire is electrically connected with the first secondary side coil or the second secondary side coil, penetrates out of the top of the magnetic core, and is electrically connected with the secondary side pin after bypassing the top of the mounting seat.
Preferably, the primary coil is wound around the outside of the first secondary side coil.
Preferably, an insulating layer is provided on an outer periphery of the primary coil.
A winding method comprising the steps of:
A. winding: winding the primary side coil, the first secondary side coil, the second secondary side coil and the third secondary side coil on the periphery of the magnetic core layer by layer;
when the first secondary side coil is wound, the homonymous end of the first secondary side coil is connected with the secondary side pin, then the homonymous end is used as a starting point to wind the magnetic core for a plurality of circles to return to the starting point, then the first secondary side coil continues to rotate around the magnetic core to enable the heteronymous end of the first secondary side coil to be located on the primary side, and the heteronymous end of the first secondary side coil is electrically connected with a connecting wire which is arranged in addition;
when the second secondary side coil is wound, the dotted end of the second secondary side coil is arranged on the primary side, and the dotted end of the second secondary side coil is electrically connected with a connecting wire which is arranged in addition; the synonym end of a second secondary side coil is electrically connected with the secondary side pin, and the second secondary side coil is wound on the periphery of the magnetic core; and after the winding is finished, an insulating layer is wrapped on the periphery of the second secondary side coil.
B. Assembling: after the coils outside the magnetic core are wound, the magnetic core is installed on the installation base, two ends of all primary side coils are welded with primary side pins of the installation base, two ends of a third secondary side coil are welded to secondary side pins of the installation base, and all connecting wires in the step A are welded with corresponding secondary side pins after bypassing the top of the installation base;
C. and (4) removing the primary side pins which are not required to be used on the mounting seat.
The invention has the beneficial effects that:
according to the half-wound main transformer provided by the invention, the winding method of the first secondary side coil is changed, and the connecting wire is matched for use, so that the homonymous end and the heteronymous end of the first secondary side coil are not positioned on the same side of the mounting seat, the non-integer number of turns is obtained, and the special voltage change requirement can be met.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a schematic diagram of the present invention.
Fig. 4 is a coil winding process diagram of the present invention.
Fig. 5 is a schematic diagram of the winding method when the number of turns of the first secondary side coil is 2.5.
Fig. 6 is a schematic diagram of the winding method when the number of turns of the second secondary side coil is 2.5.
The reference numerals in fig. 1 to 6 include:
101-mounting seat, 22-magnetic core, 33-primary side pin, 44-secondary side pin, 55-primary side coil, 66-first secondary side coil, 77-connecting wire, 88-second secondary side coil, and 99-third secondary side coil.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention is described in detail below with reference to the attached drawings.
The first embodiment is as follows:
a half-wound main transformer according to the present embodiment, as shown in fig. 1, fig. 2, fig. 3 and fig. 5, includes a mounting base 101 and a magnetic core 22 mounted on the mounting base 101, one side of the mounting base 101 is a primary side and is provided with a plurality of primary side pins 33, the other side of the mounting base 101 is a secondary side and is provided with a plurality of secondary side pins 44, the half-wound main transformer further includes a plurality of primary side coils 55, a plurality of first secondary side coils 66 and a plurality of connecting wires 77; the primary coil 55 is wound around the outer periphery of the core 22, and both ends of the primary coil 55 are electrically connected to different primary leads 33, respectively; the dotted ends of the first secondary side coils 66 are connected to the secondary side pins 44, and with the dotted ends as starting points, after the first secondary side coils 66 return to the starting points by winding the magnetic core 22 for several turns, the first secondary side coils 66 continue to rotate around the magnetic core 22 until the dotted ends of the first secondary side coils 66 are located on the primary side of the mounting base 101, and the dotted ends of the first secondary side coils 66 are electrically connected to the secondary side pins 44 through the connecting wires 77.
Specifically, the half-wound main transformer of the present embodiment is a 14pin package, in which pins 1 to 7 are primary side pins 33 (the unnecessary primary side pins 33 can be removed after the product is assembled), and pins 8 to 14 are secondary side pins 44, and the present embodiment is described by taking the number of turns of the first secondary coil as an example of 2.5. As shown in fig. 5, the winding method of the first secondary winding 66 is: firstly, the dotted terminal is welded with the pin 8 or 9 of the secondary side pin 44, then the coil is rotated 2 times around the magnetic core 22 (anticlockwise winding 2 times in fig. 5), the coil returns to the pin 8 or 9, then the coil is continuously wound for half a turn around the magnetic core 22, finally the unlike terminal of the first secondary side coil 66 stays at the primary side, then one end of the connecting wire 77 is electrically connected with the unlike terminal of the first secondary side coil 66 by using one connecting wire 77, then the connecting wire 77 penetrates out of the top of the magnetic core 22, the magnetic core 22 is installed on the installation seat 101, and then the other end of the connecting wire 77 is welded to the pins 12, 13 and 14 of the secondary side pin 44, thereby realizing the 2.5-turn winding method of the first secondary side coil 66. This embodiment is through changing the winding method of first secondary side coil 66, and the use of cooperation connecting wire 77 again makes the homonymy end and the synonym end of first secondary side coil 66 not lie in the same one side of mount pad 101 to obtain non-integer's number of turns, can satisfy special pressure and become the demand, the semi-winding main transformer's of this embodiment simple structure simultaneously can not increase the volume of transformer when satisfying special pressure and become the demand.
Of course, the number of turns of the coil in this embodiment may be set according to actual requirements, for example, 3.5 turns, 4.5 turns, and may even be N +0.6 or N +0.7, and the present embodiment is not limited.
The connecting wire 77 of this embodiment includes a conductor and an insulating sleeve sleeved on the periphery of the conductor, and two ends of the conductor are exposed outside the insulating sleeve. The connecting wire 77 of this embodiment is preferably a teflon sleeve.
As shown in fig. 4, when a plurality of coils are provided in the present embodiment, after being wound on the magnetic core 22, the secondary coil is located inside, the primary coil is located outside, and different layers of high voltage insulating yellow tapes are arranged between the coils for isolation, and after all the coils are wound, an insulating layer (not shown in the drawing) is wound on the outermost coil, and is preferably wrapped by a black insulating tape, so as to ensure safe use of the transformer of the present embodiment.
Example two:
unlike the first embodiment, in the winding method of the second secondary side coil 88 and the first primary side coil 55, the dotted terminal of the second secondary side coil 88 of the present embodiment is first disposed on the primary side of the core 22, as shown in fig. 6, and then is rotated clockwise about the core 22 by 2.5 turns, so that the dotted terminal of the second secondary side coil 88 is located at the 12, 13, and 14 pins of the secondary side pin 44, and the dotted terminal of the second secondary side coil 88 is soldered to the 12, 13, and 14 pins, while the dotted terminal is connected to the connecting wire 77, and after the core 22 is mounted on the mounting seat 101, the connecting wire 77 is soldered to the 8 or 9 pins, thereby achieving a non-integer turns ratio.
Example three:
in this embodiment, in combination with the first and second embodiments, as shown in fig. 3 and 4, N3 represents the first secondary winding 66, N4 represents the second secondary winding 88, N2 represents the third secondary winding 99, and the number of turns of N2 is an integer. The first secondary side coil 66 and the second secondary side coil 88 of the present embodiment are wound in the same manner as in the first and second embodiments, and the turns ratio can be adjusted according to actual needs, so that more different voltage variations can be realized, and therefore, the present embodiment has very high practicability.
Example four:
the embodiment provides a winding method of a half-wound main transformer, which comprises the following steps:
A. winding: winding the primary side coil 55, the first secondary side coil 66, the second secondary side coil 88 and the third secondary side coil 99 on the periphery of the magnetic core 22 layer by layer;
when the first secondary side coil 66 is wound, the dotted end of the first secondary side coil 66 is connected to the secondary side pin 44, and then the dotted end is returned to the starting point by several turns around the magnetic core 22 with the dotted end as the starting point, and then the rotation is continued around the magnetic core 22 so that the dotted end of the first secondary side coil 66 is located on the primary side, and the dotted end of the first secondary side coil 66 is electrically connected to a connecting wire 77 which is additionally provided;
when the second secondary side coil 88 is wound, the end of the second secondary side coil 88 with the same name is arranged on the primary side, and the end of the second secondary side coil 88 with the same name is electrically connected with the connecting wire 77 arranged separately; the second secondary side coil 88 is electrically connected with the secondary side pin 44 at the different name end, and the second secondary side coil 88 is wound on the periphery of the magnetic core 22; and after the winding is finished, an insulating layer is wrapped on the periphery of the second secondary side coil 88.
B. Assembling: after the coils outside the magnetic core 22 are wound, the magnetic core 22 is installed on the installation seat 101, two ends of all the primary side coils 55 are welded with the primary side pins 33 of the installation seat 101, two ends of the third secondary side coil 99 are welded with the secondary side pins 44 of the installation seat 101, and all the connecting wires 77 in the step A are welded with the corresponding secondary side pins 44 after bypassing the top of the installation seat 101;
C. the primary side pin 33 which is not required to be used in the mounting base 101 is removed.
Specifically, the winding method of the present embodiment includes two main steps of winding the coils and installing the magnetic core 22, and the winding sequence of all the primary coils and all the secondary coils is wound according to the requirement of the transformer, for example, the coils may be wound layer by layer according to the sequence from bottom to top in fig. 4, and each layer of coils is isolated by an insulating glue or other insulating substances commonly used in the prior art. When the first secondary side coil 66 and the second secondary side coil 88 are wound, the connecting wire 77 is required to be additionally arranged, the connecting wire 77 is not wound on the magnetic core 22, and the connecting wire 77 directly penetrates out of the magnetic core 22 after being welded with the different name end of the first secondary side coil 66, and similarly, the connecting wire 77 connected with the second secondary side coil 88 also penetrates out of the magnetic core 22 after being welded, and after the magnetic core 22 is fixed on the mounting seat 101, all the connecting wires 77 are wound by the top of the mounting seat 101 and then welded with the secondary side pins 44 corresponding to the mounting seat 101, so that the secondary coil can be connected with the secondary side pins 44 by using the shortest connecting wire 77. The unnecessary primary side pin 33 is removed, and thus, when the transformer of the present embodiment is used, the erroneous pin is not used. The coil winding method of the embodiment can realize more transformers with variable voltage ratios, and has high practicability.
Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a half around main transformer, includes the mount pad and installs the magnetic core on the mount pad, one side of mount pad is for once inclining and be provided with a plurality of pins that incline, and the opposite side of mount pad is the secondary side and is provided with a plurality of secondary side pins, its characterized in that: the half-wound main transformer also comprises a plurality of primary side coils, a plurality of first secondary side coils and a plurality of connecting wires;
the primary side coil is wound on the periphery of the magnetic core, and two ends of the primary side coil are respectively and electrically connected with different primary side pins;
the homonymous ends of the first secondary side coils are connected with the secondary side pins, the homonymous ends are used as starting points, the first secondary side coils wind the magnetic core for a plurality of turns and return to the starting points, then the first secondary side coils continue to rotate around the magnetic core until the synonym ends of the first secondary side coils are located on the primary side of the mounting base, and the synonym ends of the first secondary side coils are electrically connected with the secondary side pins through the connecting wires.
2. A semi-wound main transformer according to claim 1, wherein: the half-wound main transformer further comprises a plurality of second secondary side coils, the homonymous ends of the second secondary side coils are arranged on the primary side of the mounting seat, and the homonymous ends of the second secondary side coils are electrically connected with the secondary side pins through the connecting wires; the synonym end of the second secondary side coil is electrically connected with the secondary side pin, and the second secondary side coil is wound on the periphery of the magnetic core.
3. A semi-wound main transformer according to claim 1, wherein: the number of turns of the first secondary side coil is N +0.5 turns, wherein N is a natural number.
4. A semi-wound main transformer according to claim 2, wherein: the number of turns of the second secondary side coil is N +0.5 turns, wherein N is a natural number.
5. A semi-wound main transformer according to claim 1, wherein: the connecting wire comprises a conductor and an insulating sleeve sleeved on the periphery of the conductor, and two ends of the conductor are exposed outside the insulating sleeve.
6. A semi-wound main transformer according to claim 1 or 2, wherein: the half-winding main transformer further comprises a plurality of third secondary side coils, the third secondary side coils surround the periphery of the magnetic core, and two ends of each third secondary side coil are electrically connected with different secondary side pins respectively.
7. A semi-wound main transformer according to claim 1 or 2, wherein: and one end of the connecting wire is electrically connected with the first secondary side coil or the second secondary side coil, penetrates out of the top of the magnetic core, and is electrically connected with the secondary side pin after bypassing the top of the mounting seat.
8. A semi-wound main transformer according to claim 1, wherein: the primary coil surrounds the outside of the first secondary coil.
9. A semi-wound main transformer according to claim 8, wherein: the periphery of the primary side coil is provided with an insulating layer.
10. A winding method of a half-wound main transformer based on claim 1, comprising the steps of:
A. winding: winding the primary side coil, the first secondary side coil, the second secondary side coil and the third secondary side coil on the periphery of the magnetic core layer by layer;
when the first secondary side coil is wound, the homonymous end of the first secondary side coil is connected with the secondary side pin, then the homonymous end is used as a starting point to wind the magnetic core for a plurality of circles to return to the starting point, then the first secondary side coil continues to rotate around the magnetic core to enable the heteronymous end of the first secondary side coil to be located on the primary side, and the heteronymous end of the first secondary side coil is electrically connected with a connecting wire which is arranged in addition;
when the second secondary side coil is wound, the dotted end of the second secondary side coil is arranged on the primary side, and the dotted end of the second secondary side coil is electrically connected with a connecting wire which is arranged in addition; the synonym end of a second secondary side coil is electrically connected with the secondary side pin, and the second secondary side coil is wound on the periphery of the magnetic core; and after the winding is finished, an insulating layer is wrapped on the periphery of the second secondary side coil.
B. Assembling: after the coils outside the magnetic core are wound, the magnetic core is installed on the installation base, two ends of all primary side coils are welded with primary side pins of the installation base, two ends of a third secondary side coil are welded to secondary side pins of the installation base, and all connecting wires in the step A are welded with corresponding secondary side pins after bypassing the top of the installation base;
C. and (4) removing the primary side pins which are not required to be used on the mounting seat.
CN202110275201.2A 2021-03-15 2021-03-15 Semi-winding main transformer and winding method thereof Pending CN113012904A (en)

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Application Number Priority Date Filing Date Title
CN202110275201.2A CN113012904A (en) 2021-03-15 2021-03-15 Semi-winding main transformer and winding method thereof

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CN113012904A true CN113012904A (en) 2021-06-22

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1508820A (en) * 2002-12-19 2004-06-30 刘国泉 Transformer for switching power source for computer and method for winding oil winding thereof
CN201673780U (en) * 2010-04-30 2010-12-15 平湖华能电子有限公司 High-frequency transformer with sandwich winding structure
CN102226967A (en) * 2011-04-13 2011-10-26 深圳茂硕电子科技有限公司 Special electromagnetic compatibility method for Y capacitor removal
CN105529141A (en) * 2016-01-22 2016-04-27 刘国泉 Novel transformer base and transformer, and transformer terminal wiring method
CN205595196U (en) * 2016-05-09 2016-09-21 无锡硅动力微电子股份有限公司 Switching power supply's transformer
CN208690092U (en) * 2018-10-12 2019-04-02 四川长虹电器股份有限公司 Switch transformer in Switching Power Supply

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1508820A (en) * 2002-12-19 2004-06-30 刘国泉 Transformer for switching power source for computer and method for winding oil winding thereof
CN201673780U (en) * 2010-04-30 2010-12-15 平湖华能电子有限公司 High-frequency transformer with sandwich winding structure
CN102226967A (en) * 2011-04-13 2011-10-26 深圳茂硕电子科技有限公司 Special electromagnetic compatibility method for Y capacitor removal
CN105529141A (en) * 2016-01-22 2016-04-27 刘国泉 Novel transformer base and transformer, and transformer terminal wiring method
CN205595196U (en) * 2016-05-09 2016-09-21 无锡硅动力微电子股份有限公司 Switching power supply's transformer
CN208690092U (en) * 2018-10-12 2019-04-02 四川长虹电器股份有限公司 Switch transformer in Switching Power Supply

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Application publication date: 20210622