KR100469111B1 - A transformer for a line of communication - Google Patents

A transformer for a line of communication Download PDF

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Publication number
KR100469111B1
KR100469111B1 KR10-2002-0022932A KR20020022932A KR100469111B1 KR 100469111 B1 KR100469111 B1 KR 100469111B1 KR 20020022932 A KR20020022932 A KR 20020022932A KR 100469111 B1 KR100469111 B1 KR 100469111B1
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South Korea
Prior art keywords
bobbin
wound
primary coil
transformer
secondary coil
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KR10-2002-0022932A
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Korean (ko)
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KR20030084284A (en
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박덕준
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박덕준
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H01Q21/0075—Stripline fed arrays
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/062—Two dimensional planar arrays using dipole aerials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/065—Microstrip dipole antennas

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Regulation Of General Use Transformers (AREA)

Abstract

본 발명은 통신용 변압기에 관한 것으로, 더욱 상세하게는 이중 보빈을 채택하여 절연성을 향상시키도록 하는 한편, 구조 및 크기를 개선함과 동시에 간소화하여 생산 시 작업성 향상 및 이에 따른 생산 원가 및 공급 단가 절감은 물론 부품 특성이 향상되도록 하는 유도 차폐형 통신용 변압기에 관한 것이다.The present invention relates to a communication transformer, and more particularly, to adopt the double bobbin to improve the insulation, while improving the structure and size, and at the same time simplified to improve the workability during production and thereby reduce the production cost and supply cost Of course, the present invention relates to an inductive shielding communication transformer for improving component characteristics.

이를 위한 본 발명은 원통형 내측 보빈 외주면에 1차 코일을 권취시키고, 권취된 1차 코일 외부에 절연필름으로 절연시켜서된 1차 코일부와, 1차 코일부 외측에 끼워지는 원통형 외측 보빈 외주면에 2차 코일을 권취시키고, 권취된 2차 코일 외부에 절연필름으로 절연시켜서된 2차 코일부와, 내, 외측 보빈에 E 형 코어를 상, 하로 삽입하여서 구성됨을 특징으로 한다.The present invention for this purpose is to wound the primary coil on the outer peripheral surface of the cylindrical inner bobbin, the primary coil portion is insulated with an insulating film outside the wound primary coil, and the outer peripheral surface of the cylindrical outer bobbin fitted to the outer primary coil portion 2 The secondary coil is wound, and the secondary coil portion is insulated with an insulating film on the outside of the wound secondary coil, and an E-type core is inserted into the inner and outer bobbin up and down.

Description

통신용 변압기{A transformer for a line of communication}A transformer for a line of communication

본 발명은 통신용 변압기에 관한 것으로, 더욱 상세하게는 이중 보빈을 채택하여 절연성을 향상시키도록 하는 한편, 구조 및 크기를 개선함과 동시에 간소화하여 생산 시 작업성 향상 및 이에 따른 단가 절감은 물론 부품 특성이 향상되도록 하는 유도 차폐형 통신용 변압기에 관한 것이다.The present invention relates to a communication transformer, and more particularly, to adopt the double bobbin to improve the insulation, while improving the structure and size, and at the same time simplified to improve the workability in production and the resulting cost reduction as well as parts characteristics The present invention relates to an inductively shielded communication transformer.

일반적으로 변압기는 전자기 유도 작용을 이용하여 교류 전압이나 전류의 값을 바꾸는 장치를 총칭하는 것이다.In general, a transformer is a general term for a device that changes the value of an alternating voltage or current by using electromagnetic induction.

이와 같은 변압기 중 통신용으로 이용되는 종래의 통신용 변압기는 도 1에서 보는 바와 같이, 1차 코일(4)와, 2차 코일(3) 사이를 여러겹의 절연재로 된 주절연재(5)가 삽입되고, 1차 코일(4)의 외부 역시 외측 절연재(6)로 절연한 후, 변압기 코아(1)내 조립하여 된 것으로, 1차 코일(4)와 2차 코일(3) 사이를 절연하는 주절연재(5)가 고압의 내전압을 가지도록 여러겹의 절연재로 구성되므로 1차 및 2차 코일 사이의 간격이 매우 크게 되어, 즉, 여러겹의 주절연재(5)를 내장하여 특정 내전압이 요구하는 절연거리(d1)를 확보하여 되나, 이 거리는 1, 2차 코일간의 간격(D)과 같기 때문에 변압기 코아의 폭(WINDOW-WIDTH)이 매우 크게 되어 전체적인 절연구조상 제품의 치수가 증가하므로 자로가 길어지며 전체적인 손실이 증가하고, 제품의 제조원가가 증가하게 되는 문제점이 있는 것이었다.In the conventional communication transformer used for communication among such transformers, as shown in FIG. 1, a main insulating material 5 made of a plurality of insulating materials is inserted between the primary coil 4 and the secondary coil 3. The outside of the primary coil 4 is also insulated with the outer insulating material 6 and then assembled in the transformer core 1 to insulate the primary insulating material between the primary coil 4 and the secondary coil 3. Since (5) is composed of several layers of insulation materials to have a high voltage withstand voltage, the gap between the primary and secondary coils becomes very large, that is, the insulation required by a specific withstand voltage by incorporating several layers of main insulation materials 5. The distance (d1) is secured, but this distance is equal to the distance (D) between the primary and secondary coils, so the width of the transformer core (WINDOW-WIDTH) becomes very large, and the size of the product increases due to the overall insulation structure. The problem that the total loss increases and the manufacturing cost of the product increases It was located.

또한, 절연구조상 1, 2차 코일간의 정전용량을 저감시키는 차폐판을 생략하게 되므로, 1, 2차 코일(4),(3) 사이의 정전용량(C12)가 매우 증가하여 1, 2차 간의 정전결합 혹은 유도에 의하여 통신선에 유도된 고압의 전기적 장해파(NOISE)가 2차측으로 전달되는 문제점이 있는 것이었다.In addition, since the shielding plate for reducing the capacitance between the primary and secondary coils is omitted due to the insulation structure, the capacitance C12 between the primary and secondary coils 4 and 3 is greatly increased, and thus, between primary and secondary coils. There was a problem that the high voltage electric noise induced in the communication line by electrostatic coupling or induction is transmitted to the secondary side.

상기와 같은 종래 변압기의 문제점을 해결하기 최근에는 첨부 도면 도 2에서 보는 바와 같은 보빈(2)의 중앙에 설치되는 차폐판(9)과, 상기 차폐판(9)의 주위에 권취되는 다중권취 절연재(8)와, 상기 다중권취 절연재(8)의 양쪽에 삽입된 주절연재(5) 주위 및 1차 코일(4)과 2차 코일(3)의 사이에 설치되는 다중접힌 절연재(7)로 보빈(2)을 조립하고, 상기 보빈(2) 내에 코아(1)가 삽입되도록 구성된 유도 차폐형 고내압 통신용 변압기가 소개된 바 있으나, 이는 절연성에 있어서는 종래의 변압기 보다 우수하다고 할 수 있으나, 종래 변압기의 1, 2차 코일의 권취 구조 및 절연재의 구조 등과 크게 다를 바 없으며, 그 구조상 크기를 현저하게 축소시킬 수 없고 오히려 부피가 더욱 커지는 문제점이 있는 것이었다.In order to solve the problems of the conventional transformer as described above, a shielding plate 9 installed at the center of the bobbin 2 as shown in FIG. 2 and a multi-wound insulating material wound around the shielding plate 9 (8) and a bobbin with multiple folded insulation material (7) provided around the main insulation material (5) inserted in both sides of the multi-wound insulation material (8) and between the primary coil (4) and the secondary coil (3). Induction shield type high voltage resistance communication transformer has been introduced to assemble (2), and the core 1 is inserted into the bobbin 2, but this can be said to be superior to the conventional transformer in terms of insulation, but the conventional transformer The primary and secondary coils of the winding structure and the structure of the insulating material does not differ significantly, and the size of the structure can not be significantly reduced, but rather had a problem that the volume is larger.

또한, 제조 공정이 복잡하여 생산성이 저하되고, 생산 원가 및 공급 단가가 높은 문제점이 있는 것이었다.In addition, the manufacturing process is complicated, the productivity is lowered, there is a problem that the production cost and supply cost is high.

본 발명은 상기와 같은 문제점을 고려하여 안출한 것으로, 이중 보빈을 채택하여 절연성을 향상시키도록 하는 한편, 구조 및 크기를 개선함과 동시에 간소화하여 생산 시 작업성 향상 및 이에 따른 생산 원가 및 공급 단가 절감은 물론 부품 특성이 향상되도록 하는 유도 차폐형 통신용 변압기를 제공함을 기술적 과제로 삼는다.The present invention has been made in view of the above problems, by adopting a double bobbin to improve the insulation, while improving the structure and size, and at the same time simplified to improve the workability during production and the production cost and supply cost accordingly The technical challenge is to provide an inductive shielded communication transformer that allows for savings as well as improved component characteristics.

상기와 같은 과제를 달성하기 위한 본 발명은 코일이 권치되는 보빈을 내,외측으로 구분하여서 된 변압기에 있어서, 원통형 내측보빈 외주면에 1차 코일을 권취시키고, 상기 권취된 1차 코일 외부에 절연필름으로 절연시켜서된 1차 코일부와, 상기 1차 코일부 외측에 끼워지는 원통형 외측 보빈 외주면에 2차 코일을 권취시키고, 상기 권취된 2차 코일 외부에 절연필름으로 2중 절연시켜서 된 2차 코일부로 구분시키되, 내, 외측 보빈에 E 형 코어를 상, 하로 삽입시키고, 함체 형상으로 된 케이스 본체 및 본체의 개방부를 차단하며 일측에 코일 단선이 접합되는 단자가 구비된 덮개로 이루어진 케이스에 수용시키되, 에폭시를 충진시켜서 구성됨을 특징으로 한다.In the present invention for achieving the above object is a transformer in which the bobbin coil is wound into an inner, outer side, the primary coil is wound on the outer peripheral surface of the cylindrical inner bobbin, the insulation film outside the wound primary coil The secondary coil by winding the secondary coil on the primary coil portion insulated with the insulation and the outer peripheral surface of the cylindrical outer bobbin fitted to the outside of the primary coil portion, and insulating the secondary coil with an insulating film on the outside of the wound secondary coil. The E-type core is inserted into the inner and outer bobbins up and down, and the housing is made of a cover including a case body and a cover having a terminal to which a coil disconnection is joined at one side. It is characterized in that it is configured by filling the epoxy.

도 1은 종래의 통신용 변압기 구조를 보인 개략도1 is a schematic diagram showing a conventional communication transformer structure

도 2는 종래의 통신용 변압기를 개선한 변압기의 구조를 보인 개략도Figure 2 is a schematic diagram showing the structure of a transformer that improves the conventional communication transformer

도 3은 본 발명의 전체 구성을 보인 사시도3 is a perspective view showing the overall configuration of the present invention

도 4는 본 발명의 상세 구조를 보인 분리 사시도Figure 4 is an exploded perspective view showing a detailed structure of the present invention

도 5는 본 발명인 통신용 변압기가 케이스에 삽입되는 상태를 보인 사시도Figure 5 is a perspective view showing a state in which the present invention is inserted into the communication transformer case

도 6은 본 발명인 통신용 변압기가 내장된 케이스 내에 에폭시가 충진된 상태의 구성을 보인 측 단면도Figure 6 is a side cross-sectional view showing the configuration of the state filled with epoxy in the case of the present invention communication transformer built-in

도 7은 본 발명인 통신용 변압기가 내장된 변압기 케이스가 완전 조립된 상태의 사시도Figure 7 is a perspective view of a state in which the transformer case with a built-in communication transformer is fully assembled

<도면의 주요부분에 대한 부호 설명><Description of Signs of Major Parts of Drawings>

10 : 통신용 변압기 10-1 : 1차 코일부10: communication transformer 10-1: primary coil part

10-2 : 2차 코일부 11 : 내측 보빈10-2: secondary coil portion 11: inner bobbin

12 : 1차 코일 13,16 : 절연필름12: primary coil 13, 16: insulation film

14 : 외측 보빈 15 : 2차 코일14: outer bobbin 15: secondary coil

17,17': 코어 20 : 케이스17,17 ': core 20: case

21 : 케이스 본체 22 : 덮개21: case body 22: cover

23 : 단자 30 : 에폭시23: terminal 30: epoxy

본 발명을 설명하기 위한 첨부도면 도 3은 본 발명의 전체 구성을 보인 사시도이고, 도 4는 본 발명의 상세 구조를 보인 분리 사시도이고, 도 5는 본 발명인 통신용 변압기가 케이스에 삽입되는 상태를 보인 사시도이고, 도 6은 본 발명인 통신용 변압기가 내장된 케이스 내에 에폭시가 충진된 상태의 구성을 보인 측 단면도이며, 도 7은 본 발명인 통신용 변압기가 내장된 변압기 케이스가 완전 조립된 상태의 사시도로서 이중 도면 부호 10은 본 발명인 통신용 변압기이다.Figure 3 is a perspective view showing the overall configuration of the present invention, Figure 4 is an exploded perspective view showing a detailed structure of the present invention, Figure 5 shows a state in which the communication transformer of the present invention is inserted into the case. Figure 6 is a side cross-sectional view showing the configuration of a state filled with epoxy in the case in which the present invention communication transformer is built-in, Figure 7 is a perspective view of a fully assembled transformer case in which the present invention communication transformer is built double view Reference numeral 10 is a communication transformer of the present invention.

본 발명인 통신용 변압기(10)는 특히, 유도 차폐형 변압기로서, 첨부 도면 도 3 및 도 4 에서 보는 바와 같이, 코일이 권취되는 보빈을 내,외측으로 구분하여서 된 변압기에 있어서, 원통형 내측 보빈(11) 외주면에 1차 코일(12)을 권취시키고, 상기 권취된 1차 코일(12) 외부에 절연필름(13)으로 절연시켜서된 1차 코일부(10-1)와, 상기 1차 코일부(10-1) 외측에 끼워지는 원통형 외측 보빈(14) 외주면에 2차 코일(15)을 권취시키고, 상기 권취된 2차 코일(15) 외부에 절연필름(16),(16')으로 이중 절연시켜서된 2차 코일부(10-2)로 구분시키되, 내, 외측 보빈(11),(14)에 E 형 코어(17),(17')를 상, 하로 삽입시키고, 함체 형상으로 된 케이스 본체(21) 및 본체의 개방부를 차단하며 일측에 코일 단선이 접합되는 단자가 구비된 덮개(22)로 이루어진 케이스(20)에 수용시키되, 에폭시를 충진시켜서 구성된 것이다.In particular, the communication transformer 10 of the present invention is an induction shield type transformer, and as shown in the accompanying drawings, FIGS. 3 and 4, in a transformer in which a bobbin in which a coil is wound is divided into an inner and an outer side, a cylindrical inner bobbin 11 The primary coil unit 10-1 wound around the outer circumferential surface and insulated with an insulating film 13 outside the wound primary coil 12, and the primary coil unit ( 10-1) The secondary coil 15 is wound on the outer circumferential surface of the cylindrical outer bobbin 14 to be fitted to the outside, and double insulation is performed by the insulating films 16 and 16 'outside the wound secondary coil 15. The secondary coil part 10-2 is divided into two parts, and the inner and outer bobbins 11 and 14 are inserted into the E-shaped cores 17 and 17 'up and down, and the enclosure is shaped as a case. The main body 21 and the opening of the main body are blocked and housed in a case 20 made of a cover 22 having a terminal to which a coil disconnection is joined at one side, and filled with epoxy. By it consisting of.

본 발명에서 1차 코일(12)과 2차 코일(15)의 절연은 1차 코일부(10-1)의 절연필름(13)이 1차로 절연시키게 되고, 2차 코일(15)이 감겨지는 외측 보빈(14)이 2차로 절연시키게 되고, 2차 코일부(10-2)의 외부는 절연필름(16),(16')으로 이중 절연시켜서 구성된 것이다.In the present invention, the primary coil 12 and the secondary coil 15 are insulated from the insulating film 13 of the primary coil unit 10-1, and the secondary coil 15 is wound. The outer bobbin 14 is secondarily insulated, and the outside of the secondary coil unit 10-2 is configured by double insulation with the insulating films 16 and 16 ′.

이와 같이 구성된 본 발명은 첨부 도면 도 3 및 도 4에서 보는 바와 같이, 내측 보빈(11)에 권취된 1차 코일(12)을 절연필름(13)으로 1차 절연하여 2차 코일(15)과 차페시키고, 2차 코일(15)이 권취된 외측 보빈(14)을 1차 코일부(10-1)의 절연필름(13) 외측에 끼워서 1차 코일(12)과 2차 코일(15) 사이를 2차 절연시키게 되므로, 1차 코일부(10-2)와 2차 코일부(10-2) 간에 절연성이 향상되며, 외부에 대한 2차 코일부(10-2)의 절연은 절연필름(16),(16')을 이중으로 하여서 된 것으로, 절연필름(16),(16')을 이중으로 하는 것은 2차 코일(15)의 단부와 외부 단선과의 납땜 접합 부위에 숏트가 발생되는 것을 방지하는 역할도 하는 것으로, 상기와 같은 본 발명의 절연성 향상은 정전 결합 또는 정전 유도에 의해 통신선에 유도된 고압의 전기적 장해파(noise)가 2차 측으로 전달되는 원인을 방지하여 변압기 자체의 부품 특성을 향상시키게 됨은 물론, 1차 코일부(10-1)가 2차 코일부(10-2) 내측에 삽입된 구조로 이루어지게 되므로, 그 크기가 현저하게 축소되어 소형화가 가능한 것이다.3 and 4 of the present invention configured as described above, the primary coil 12 wound around the inner bobbin 11 is primarily insulated from the insulating film 13 to the secondary coil 15. The outer bobbin 14 wound around the secondary coil 15 is inserted between the primary coil 12 and the secondary coil 15 by inserting the outer bobbin 14 on the outer side of the insulating film 13 of the primary coil unit 10-1. Since the secondary insulation, the insulation between the primary coil portion 10-2 and the secondary coil portion 10-2 is improved, the insulation of the secondary coil portion 10-2 to the outside is an insulating film ( 16) and 16 'are made double, and the insulating films 16 and 16' are made double so that a short is generated at the solder joint between the end of the secondary coil 15 and an external disconnection. In addition, to improve the insulation of the present invention as described above, the cause of the high-voltage electrical noise induced in the communication line by the electrostatic coupling or electrostatic induction is transmitted to the secondary side. In addition to improving the component characteristics of the transformer itself, as well as having a structure in which the primary coil portion 10-1 is inserted inside the secondary coil portion 10-2, the size thereof is significantly reduced and downsized. Would be possible.

이와 같이 되는 본 발명은 첨부 도면 도 5에서 보는 바와 같이, 케이스 본체(21)와 덮개(22)로 이루어진 케이스(20)의 본체(21) 내에 삽입하되, 변압기(10)의 1, 2차 코일부(10-1),(10-2)로부터 유출된 단선을 덮개(22) 외부로돌출된 단자의 내측 단부에 접합한 후, 덮개(22)를 덮고, 내구성 내습성 및 차폐성 등을 고려하여 첨부 도면 도 6에서 보는 바와 같이, 케이스 본체(21) 후방의 통공(21')을 통해 케이스(20)내부에 에폭시(30)를 충진하게 된다.The present invention as described above is inserted in the main body 21 of the case 20 consisting of the case main body 21 and the cover 22, as shown in Figure 5, the primary and secondary nose of the transformer 10 After connecting the disconnection flowed out from the portions 10-1 and 10-2 to the inner end of the terminal protruded out of the cover 22, the cover 22 is covered and in consideration of durability moisture resistance and shielding properties, etc. 6, the epoxy 30 is filled into the case 20 through the through hole 21 'behind the case body 21. As shown in FIG.

상기와 같이 하여서 첨부 도면 도 7과 같은 통신용 변압기(10)를 수용한 케이스(20)를 통신선로와 연결하여 교류 전압이나 전류의 값을 바꾸어 각 통신 장치의 전원으로 공급하게 된다.As described above, the case 20 accommodating the communication transformer 10 as shown in FIG. 7 is connected to a communication line to change an AC voltage or a current value and supply the power to each communication device.

이와 같이 되는 본 발명은 이중 보빈을 채택하여 절연성을 향상시키도록 하는 한편, 구조 및 크기를 개선함과 동시에 간소화하여 생산 시 작업성 향상 및 이에 따른 생산 원가 및 공급 단가 절감은 물론 부품 특성이 향상되도록 하는 효과를 갖는다.The present invention is to adopt the double bobbin to improve the insulation, while improving the structure and size, and at the same time simplified to improve the workability during production and thereby reducing the production cost and supply cost as well as parts characteristics to be improved Has the effect.

Claims (1)

코일이 권취되는 보빈을 내,외측으로 구분하여서 된 변압기에 있어서, 원통형 내측 보빈(11) 외주면에 1차 코일(12)을 권취시키고, 상기 권취된 1차 코일(12) 외부에 절연필름(13)으로 절연시켜서된 1차 코일부(10-1)와, 상기 1차 코일부(10-1) 외측에 끼워지는 원통형 외측 보빈(14) 외주면에 2차 코일(15)을 권취시키고, 상기 권취된 2차 코일(15) 외부에 절연필름(16),(16')으로 이중 절연시켜서된 2차 코일부(10-2)로 구분시키괴, 내, 외측 보빈(11),(14)에 E 형 코어(17),(17')를 상, 하로 삽입시키고, 함체 형상으로 된 케이스 본체(21) 및 본체의 개방부를 차단하며 일측에 코일 단선이 접합되는 단자가 구비된 덮개(22)로 이루어진 케이스(20)에 수용시키되, 에폭시를 충진시켜서 구성됨을 특징으로 하는 통신용 변압기.In a transformer in which a bobbin in which a coil is wound is divided into an inner and an outer side, a primary coil 12 is wound around an outer circumferential surface of a cylindrical inner bobbin 11, and an insulating film 13 outside the wound primary coil 12. The secondary coil 15 is wound around the primary coil portion 10-1 and the outer peripheral surface of the cylindrical outer bobbin 14 fitted to the outer side of the primary coil portion 10-1. The secondary coil 15 to the secondary coil section 10-2 which is double insulated with insulating films 16 and 16 'outside the secondary coil 15, and to the inner and outer bobbins 11 and 14. The E-shaped cores 17 and 17 'are inserted into the upper and lower sides, and the case body 21 formed into an enclosure shape and the cover 22 provided with a terminal to which an open part of the main body is connected and a coil disconnection is joined to one side. Housed in the case 20 made, communication transformer, characterized in that configured by filling the epoxy.
KR10-2002-0022932A 2002-04-26 2002-04-26 A transformer for a line of communication KR100469111B1 (en)

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KR101201291B1 (en) 2012-05-08 2012-11-14 안희석 Transformer with backward double winding coil transformer for protceting electro-static shield, surge and eletromagnetic noise

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KR102181407B1 (en) * 2019-05-09 2020-11-23 펄스일렉트로닉스코리아유한회사 Communication transformer
KR102210425B1 (en) * 2020-11-06 2021-01-29 양황순 Transformer assembly and method for assembling the same

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JPH01130492A (en) * 1987-11-16 1989-05-23 Sharp Corp Booster transformer for high frequency heating device
JPH01165610U (en) * 1988-05-11 1989-11-20
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JPH0470719U (en) * 1990-10-30 1992-06-23
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JP2000357617A (en) * 1999-06-15 2000-12-26 Matsushita Electric Ind Co Ltd Transformer of power supply for driving magnetron

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Publication number Priority date Publication date Assignee Title
KR101201291B1 (en) 2012-05-08 2012-11-14 안희석 Transformer with backward double winding coil transformer for protceting electro-static shield, surge and eletromagnetic noise

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