CN220138046U - Pulse transformer - Google Patents
Pulse transformer Download PDFInfo
- Publication number
- CN220138046U CN220138046U CN202320107268.XU CN202320107268U CN220138046U CN 220138046 U CN220138046 U CN 220138046U CN 202320107268 U CN202320107268 U CN 202320107268U CN 220138046 U CN220138046 U CN 220138046U
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- CN
- China
- Prior art keywords
- shell
- primary
- insulating plate
- pulse transformer
- magnetic core
- Prior art date
- 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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- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000004382 potting Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000003973 paint Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- UFNIBRDIUNVOMX-UHFFFAOYSA-N 2,4'-dichlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1Cl UFNIBRDIUNVOMX-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 208000033999 Device damage Diseases 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
The utility model discloses a pulse transformer which comprises a magnetic core, a shell, a screw rod and an insulating plate, wherein the magnetic core is arranged in the shell, one end of the screw rod penetrates through the insulating plate and stretches into the shell, the insulating plate is arranged on one side of the shell, and a wire is arranged on the insulating plate. The magnetic core and the primary and secondary coils are encapsulated in the shell, so that the transformer can be used for a long time in a wet environment; the lead wire of the primary and secondary side coil is electrically communicated with the lead wire by being welded on the PCB, the welding spot is far away from the primary and secondary side coil, and the lead wire is led out more conveniently, more safely and more reliably than the lead wire of the primary and secondary side coil enameled wire phi 0.16 by welding phi 0.9; and after the transformer is installed and fixed through the screw, lead-out ends of the lead are welded, and the installation and welding distribution steps are performed. The pulse transformer has the advantages of low production cost, high reliability, good durability and the like.
Description
Technical Field
The utility model belongs to the technical field of pulse transformers, and particularly relates to a pulse transformer.
Background
Pulse transformers are widely used in various pulse devices such as radar, transformation technology, experimental physics, etc. The pulse transformer is mainly used for matching load resistance with characteristic impedance of feeder line, raising or lowering pulse voltage and isolating primary and secondary circuits of the transformer. Compared with a common power type transformer, the pulse transformer has smaller power, higher circuit frequency, smaller distribution capacitance and leakage inductance requirements and stronger anti-interference capability.
The pulse transformer has the function of maintaining the rapid and stable transmission of signals and ensuring that waveforms are not distorted, so that a magnetic core of the pulse transformer generally adopts a soft magnetic ferrite magnetic ring with high magnetic conductivity, and the primary and secondary coils are uniformly wound on the magnetic ring, thereby effectively enhancing the coupling property of the primary and secondary coils, reducing leakage inductance and improving transmission efficiency. In order to isolate the interference of external components and electromagnetic fields, the transformer adopts a potting mode to pot the coil in the plastic shell, the coil leads are welded on the inner pins of the shell, and the coil leads are welded on the circuit board through the patch pins outside the shell, so that the electric communication is realized. At present, the common appearance structure of the pulse transformer at home and abroad adopts the plastic package patch type structure, and the communication between the transformer and a circuit and the fixed installation of the transformer are realized through patch pins on a plastic shell. In some relatively humid and severe environments, pulse transformers with plastic package structures are easy to absorb moisture to cause device damage, the qualification rate of pulse transformers manufactured by adopting metal shells at home and abroad is not high at present, the cost of the metal shells with patch type or direct-insert type pins is high, and transformer manufacturers cannot adopt high-cost raw materials for controlling the cost. Therefore, a pulse transformer with high reliability and good durability is needed.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a pulse transformer which can solve the problems of high production cost and short service life in a humid environment of a pulse transformer with a plastic package patch type structure.
The utility model is realized by the following technical scheme.
The utility model provides a pulse transformer which comprises a magnetic core, a shell, a screw rod and an insulating plate, wherein the magnetic core is arranged in the shell, one end of the screw rod penetrates through the insulating plate and stretches into the shell, the insulating plate is arranged on one side of the shell, and a wire is arranged on the insulating plate.
Preferably, the shell is internally provided with a potting compound and a PCB, and one end of the lead is welded with the PCB.
Preferably, the outside of the magnetic core is sequentially coated with a film and a primary and secondary coil, and the outside of the primary and secondary coil is sequentially coated with a film and a buffer layer.
Preferably, a moisture-proof layer is arranged between the insulating plate and the potting material.
Preferably, a nut washer, a nut spring and a nut are arranged on the screw.
Preferably, 4 through hole bonding pads are arranged on the PCB, and the PCB is connected with the primary and secondary coil leads and the wires through the through hole bonding pads.
Preferably, the primary and secondary side coils adopt phi 0.16 enameled wires, and the paint film thickness is 2 mu m.
Preferably, the inner wall of the shell is provided with a moisture-proof layer, and one end of the screw is connected with the moisture-proof layer of the inner wall of the shell.
The utility model has the beneficial effects that:
the magnetic core and the primary and secondary coils are encapsulated in the shell, so that the transformer can be used for a long time in a wet environment; the lead wire of the primary and secondary side coil is electrically communicated with the lead wire by being welded on the PCB, the welding spot is far away from the primary and secondary side coil, and the lead wire is led out more conveniently, more safely and more reliably than the lead wire of the primary and secondary side coil enameled wire phi 0.16 by welding phi 0.9; and after the transformer is installed and fixed through the screw, lead-out ends of the lead are welded, and the installation and welding distribution steps are performed. The pulse transformer has the advantages of low production cost, high reliability, good durability and the like.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the inside of the housing of the present utility model;
in the figure: 1-magnetic core, 2-primary and secondary side coil, 3-film, 4-buffer layer, 5-shell, 6-potting material, 7-screw rod, 8-PCB board, 9-wire, 10-insulating board, 11-dampproof layer, 12-nut gasket, 13-nut spring, 14-nut.
Detailed Description
The technical solution of the present utility model is further described below, but the scope of the claimed utility model is not limited to the above.
Example 1:
as shown in fig. 1 and 2, a pulse transformer comprises a magnetic core 1, a shell 5, a screw rod 7 and an insulating plate 10, wherein the magnetic core 1 is arranged in the shell 5, the magnetic core 1 is annular, one end of the screw rod 7 penetrates through the magnetic core 1, the shell 5 is made of aluminum, the pulse transformer has the advantages of corrosion resistance and suitability for being applied to a humid environment, one end of the screw rod 7 penetrates through the insulating plate 10 to extend into the shell 5, the screw rod 7 is an M2 screw rod, the insulating plate 10 is arranged on one side of the shell 5, a wire 9 is arranged on the insulating plate 10, the insulating plate 10 is an epoxy plate, the wire 9 is a teflon wire, the wire 9 adopts phi 0.9 teflon high-temperature silvered wire, and the temperature resistance grade is 220 ℃ and one end of the wire 9 penetrating through the insulating plate 10 is subjected to tin immersion.
Be provided with filling and sealing material 6 and PCB board 8 in the shell 5, wire 9 one end and the welding of PCB board 8 form electric intercommunication, and this setting welding is convenient, and former secondary coil 2 is kept away from to the solder joint, and the mode of drawing forth through welding wire 9 draws forth more safe and reliable than former secondary coil 2 enameled wire phi 0.16 this line.
The magnetic core 1 is sequentially coated with a film 3 and a primary and secondary coil 2, the primary and secondary coil 2 is sequentially coated with the film 3 and a buffer layer 4, and the primary and secondary coil 2 is wound on the annular magnetic core 1 in double lines. The film 3 is a polytetrafluoroethylene film, and the magnetic core 1 is wrapped by the film 3, so that the magnetic core 1 and the primary and secondary side coil 2 are physically isolated. The buffer layer 4 is made of silica gel, and the soft characteristic of the silica gel has a buffer effect, so that the stress generated in the curing process of the potting material 6 can be reduced, and the material characteristic of the magnetic core 1 is not influenced.
A moisture-proof layer 11 is arranged between the insulating plate 10 and the potting material 6, the moisture-proof layer 11 is epoxy glue, the insulating plate 10 is tightly attached to the edge point of the shell 5 and is fixed through the moisture-proof layer 11, and the moisture absorption of the transformer can be reduced by arranging the moisture-proof layer 11.
The screw 7 is provided with an M2 nut washer 12, an M2 nut spring 13 and an M2 nut 14. The screw rod 7, the nut gasket 12, the nut spring 13 and the nut 14 are all made of stainless steel, and are corrosion-resistant and durable. The transformer body is kept away from to wire 9 extraction end (the one end that does not stretch into in the casing 5), through M2 screw rod 7, M2 nut gasket 12, M2 nut spring 13, M2 nut 14 installation are fixed and are carried out wire 9 extraction end welding again behind this transformer, installation and welding distribution step go on, mutually noninterfere, convenient operation, safe and reliable.
4 through hole bonding pads are arranged on the PCB 8, and the PCB 8 is connected with the lead wire and the lead wire 9 of the primary and secondary coil 2 through the through hole bonding pads.
The primary and secondary side coil 2 adopts phi 0.16 polyurethane enameled wire, the thickness of a paint film is 2 mu m, and the temperature resistance grade is 180 ℃.
The inner wall of the shell 5 is provided with a moisture-proof layer 11, one end of the screw rod 7 is connected with the moisture-proof layer 11 on the inner wall of the shell 5, and the mode of installing the screw rod 7 has the advantage of strong vibration resistance and impact resistance.
Claims (6)
1. A pulse transformer, characterized by: the magnetic core (1) is arranged in the shell (5), one end of the screw rod (7) penetrates through the insulating plate (10) and stretches into the shell (5), the insulating plate (10) is arranged on one side of the shell (5), and a wire (9) is arranged on the insulating plate (10);
a potting material (6) and a PCB (8) are arranged in the shell (5), and one end of the lead (9) is welded with the PCB (8);
4 through hole bonding pads are arranged on the PCB (8), and the PCB (8) is connected with the lead wire and the lead wire (9) of the primary and secondary side coil (2) through the through hole bonding pads.
2. A pulse transformer as defined in claim 1, wherein: the magnetic core is characterized in that a film (3) and a primary and secondary coil (2) are sequentially coated outside the magnetic core (1), and the film (3) and a buffer layer (4) are sequentially coated outside the primary and secondary coil (2).
3. A pulse transformer as defined in claim 1, wherein: a moisture-proof layer (11) is arranged between the insulating plate (10) and the potting material (6).
4. A pulse transformer as defined in claim 1, wherein: the screw (7) is provided with a nut gasket (12), a nut spring (13) and a nut (14).
5. A pulse transformer as defined in claim 2, wherein: the primary and secondary side coil (2) adopts phi 0.16 enameled wire, and the thickness of a paint film is 2 mu m.
6. A pulse transformer as defined in claim 1, wherein: the inner wall of the shell (5) is provided with a moisture-proof layer (11), and one end of the screw rod (7) is connected with the moisture-proof layer (11) on the inner wall of the shell (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320107268.XU CN220138046U (en) | 2023-02-03 | 2023-02-03 | Pulse transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320107268.XU CN220138046U (en) | 2023-02-03 | 2023-02-03 | Pulse transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220138046U true CN220138046U (en) | 2023-12-05 |
Family
ID=88962866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320107268.XU Active CN220138046U (en) | 2023-02-03 | 2023-02-03 | Pulse transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220138046U (en) |
-
2023
- 2023-02-03 CN CN202320107268.XU patent/CN220138046U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |