WO1997024735A1 - High frequency transformer - Google Patents

High frequency transformer Download PDF

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Publication number
WO1997024735A1
WO1997024735A1 PCT/CN1996/000118 CN9600118W WO9724735A1 WO 1997024735 A1 WO1997024735 A1 WO 1997024735A1 CN 9600118 W CN9600118 W CN 9600118W WO 9724735 A1 WO9724735 A1 WO 9724735A1
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WO
WIPO (PCT)
Prior art keywords
protection box
iron core
core protection
frequency transformer
ring
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.)
Ceased
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PCT/CN1996/000118
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English (en)
French (fr)
Inventor
Suzhen Hu
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to PL96327469A priority Critical patent/PL181561B1/pl
Priority to AU11887/97A priority patent/AU1188797A/en
Priority to US09/091,961 priority patent/US6078239A/en
Priority to DE69626856T priority patent/DE69626856T2/de
Priority to EP96942997A priority patent/EP0875908B1/en
Publication of WO1997024735A1 publication Critical patent/WO1997024735A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • H01F30/16—Toroidal transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range

Definitions

  • the present invention relates to a high-frequency transformer, used in inverter welding machines and various types of power transformers.
  • Conventional high-frequency transformers such as iron cores made of amorphous soft magnetic materials, are easy to achieve high saturation magnetic flux and permeability.
  • amorphous soft magnetic materials are soft and brittle, and easily damaged, and are practically used. It is usually placed in a protective box.
  • Cispheral Utility Model Patent No. 942455290.0 discloses a non-magnetic metallic material protection box for a high-frequency transformer with a wing-type ring-shaped amorphous soft magnetic material iron core.
  • the outer wall of the protection box is provided with radial distribution outwards.
  • Radiating wing which increases the heat dissipation surface, makes the heat generated by iron loss easy to radiate, and solves the problems of heat dissipation when using plastic or bakelite iron core protection box at high frequency.
  • the high-frequency transformer using the above-mentioned iron core protection box has a long radiating fin for the iron core protection ⁇ , which makes the transformer bulky, the windings of the windings lengthened, and the coupling between the high-voltage winding and the low-voltage winding.
  • the tightness makes the magnetic field of the transformer large and the heat loss of the winding large.
  • the object of the present invention is to provide a high-frequency transformer, compared with the prior art high-frequency transformer, which is small in size, light in weight, high, and low-voltage windings have a high degree of magnetic coupling, so that its leakage resistance is small.
  • Another object of the present invention is to provide a high-frequency transformer with a center tap in its low-voltage winding. Compared with the high-frequency transformer in the prior art, it has a small size, light weight, high, and high magnetic coupling between the low-voltage windings. Thus its 3 ⁇ 4 resistance is small.
  • the high-frequency transformer of the present invention includes:
  • Toroidal iron core made of amorphous magnetic material
  • An iron core protection box wrapped on the annular iron core is made of a conductive material; a high-voltage winding is wound around the iron core protection box with an enameled wire;
  • the shape of the iron core protection box is similar to that of the ring-shaped iron core.
  • a ring-shaped opening is formed in the circumferential direction of the ring-shaped collar wall of the iron-core protection box along the circumferential direction.
  • a plurality of conductor lead wires electrically connected to the iron core protection box are arranged along the inner and outer sides in the circumferential direction, and the conductor lead wires inside and outside the ring-shaped opening are respectively electrically connected together to form two lead-out ends.
  • the iron core protection box and the two terminals form the low-voltage winding of the high-frequency transformer.
  • the low-frequency winding high-frequency transformer with a center tap of the present invention includes:
  • Toroidal iron core made of amorphous magnetic material
  • a high-voltage winding is wound around the iron core protection box with an enameled wire
  • the iron core protection box is composed of a first iron core protection box and a second iron core protection box, and the shapes of the first iron core protection box and the second iron core protection box are similar to the shape of the annular iron core, A first iron core protection box is directly wrapped on the annular iron core, and a second iron core protection box is coated on the first iron core protection box in an electrically insulating manner.
  • the first annular top wall and the second annular top wall of the second iron core protection box are respectively provided with a first annular opening and a second annular opening along the circumferential direction, and the two correspond to each other.
  • One of the outer peripheries is connected to the opposite perimeter of the second annular opening, and the box walls adjacent to the unconnected periphery of the first annular opening and the second annular opening are respectively circumferentially connected
  • a plurality of first and second groups of conductor lead-out wires electrically connected to the first and second core-core protection boxes are provided, and are adjacent to one of the two connected peripherals.
  • the box wall is provided with a plurality of corresponding iron core protection boxes along the circumferential direction.
  • a plurality of reserved lead-out wires are provided on the second annular top wall at positions corresponding to the first set of lead-out wires on the first core protection box
  • the third group of conductor lead-out wires and the second group of conductor lead-out wires are electrically connected together to form a third lead-out terminal and a second lead-out terminal, and the first group of conductor lead-out wires respectively pass through corresponding reserved holes, and then Electrically connected together to form a first lead-out, thereby forming a low-voltage winding with a center tap by the iron core protection box and the first, second and third lead-out.
  • FIG. 1 is a sectional view of a high-frequency transformer according to the present invention
  • Figure 2 is a cross-sectional view of a high-frequency transformer with a center tap of its low-voltage winding according to the present invention. Best Mode of the Invention
  • FIG. 1 shows a cross-sectional view of the high-frequency transformer of the present invention.
  • the high-frequency transformer 1 is mainly composed of the following parts: an annular core 2 of an amorphous magnetic material, and an iron core covering the annular core 2 Box 3, a high-voltage winding formed on the iron core protection box 3 by enameled wire.
  • the iron core protection box 3 is made of conductive material, preferably aluminum, and copper is more effective. Its shape is similar to that of a toroidal iron core. The shape of 2 is similar.
  • the iron core protection box can both protect the toroidal iron core of an amorphous soft magnetic material, and also serve as the low-voltage winding of the high-frequency transformer.
  • a ring-shaped opening 32 is opened on the ring-shaped top wall 31 in the circumferential direction.
  • a plurality of conductor lead wires electrically connected to the iron core protection box are arranged on the inside and outside of the ring-shaped opening 32 in a circumferentially uniform manner.
  • 61, 62, 63, 64, 65, 66, ⁇ , 71, 72, 73, 74, 75, 76,..., the lead wires may be columnar or other shapes.
  • the inside of the annular opening 32 is inverted The conductor leads 61, 62, 63, 64, 65, 66 ... and all The conductor lead-out wires 71, 72, 73, 74, 75, 76, ...
  • the high-voltage winding 4 of the high-frequency transformer according to the present invention can be directly wound on the iron core protection box 3 by using an insulated wire, and each high-voltage winding is at each low The winding leads are evenly distributed.
  • FIG. 2 shows a cross-sectional view of a high-frequency transformer with a center tap in its low-voltage windings according to the present invention.
  • the high-frequency transformer of the present invention shown in FIG. 1 is similar. The difference is that the core protection box is composed of a first core protection box 300 and a second core protection box 900.
  • the two core protection boxes are electrically
  • the first ring opening 320 and the second ring collar 910 provided on the first ring-shaped siding wall 310 and the second ring-shaped collar wall 910 are respectively insulated from each other.
  • the inner periphery of the first ring-shaped opening 320 corresponds to each other.
  • one of the outer perimeters (such as the outer perimeter) is connected to the opposite perimeter (such as the inner perimeter) of the second annular opening 920.
  • Each of the remaining unconnected annular openings 320, 920 is adjacent to each other.
  • a peripheral box wall is provided with a plurality of the first iron core protection boxes in a uniform sentence distribution manner along the circumferential direction.
  • the first set of conductor lead-outs 610, 620, 630, 640, 650, 660, ..., and the second set of conductor lead-outs 510, 520, 530, 540, ... which are electrically connected to 300 and the second iron core protection box 900, ...
  • a plurality of corresponding iron core protection boxes are arranged in a uniform distribution in the circumferential direction.
  • the third group of conductor lead wires 710, 720, 730, 740, 750, ..., which are electrically connected, are provided with a plurality of reserved holes 810, ..., 870, ... in the second annular top wall 910.
  • first iron core protection box 300 so as to facilitate the first group of conductor lead-out wires 610, 620, 630, 640, 650, 660... pass through the corresponding reserved holes 810, ⁇ ', 870,... and are electrically connected together to form a first terminal 666, and a second group of conductor terminals S10, 520, 530, 540 ..., And the third group of conductor lead-out wires 710, 720, 730, 740, 750,... are electrically connected together to form the second and third lead-out wires, respectively.
  • the iron core protection boxes 300, 900 and the first, second, and third lead-out terminals 666, 999, 777 constitute the low-voltage winding of the high-frequency transformer of the present invention
  • the third lead-out terminal forms the high-voltage transformer of the present invention.
  • the high-frequency transformer with a center tap of the low-voltage winding of the present invention is described above in the form of an embodiment.
  • the low-voltage winding of the high-frequency transformer includes two conductive material protection boxes.
  • the low voltage winding includes more iron core protection boxes connected in a similar relationship, and it can be made into a low voltage winding transformer with or without a center tap to adapt to a lower operating frequency or a higher output voltage.
  • all modified transformers fall within the scope of protection of the present invention.
  • the high-frequency transformer of the present invention uses a toroidal core conductive material protection box to make its low-voltage winding, the low-voltage winding wound on the iron-core protection box in the prior art is eliminated, thereby making the structure of the entire high-frequency transformer more compact. , Reduced volume and reduced weight, especially suitable for batch industrial production; and because the high-voltage windings are tightly wound around the iron core protection box, the magnetic coupling between the high- and low-voltage windings is improved, and the reactance is reduced, thereby reducing Loss.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Housings And Mounting Of Transformers (AREA)

Description

高频变压器
技术领域
本发明涉及一种高频变压器， 用于逆变焊机和各类电源的变压. 背景技术
常规的高频变压器如采用非晶态软磁材料制作的铁芯， 易于实现高 的饱和磁通和磁导率. 但此种非晶态软磁材料质软性脆， 容易损坏， 在 实际应用时通常置于保护盒中.
中国实用新型专利第 942455290.0号公开了一种用于高頻变压器的 翼板式环形非晶态软磁材料铁芯的非磁性金属材料保护盒， 该保护盒的 外壁上装设向外呈辐射状分布的散热翼板， 从而加大了散热面， 使铁损 产生的热量易于散发出去， 解决了在高頻状态下使用塑料或胶木铁芯保 护盒时产生的散热困难等问題.
然而， 采用上述铁芯保护盒的高頻变压器由于其铁芯保护龛的散热 翼片很长， 使该变压器体积加大， 绕组的绕线加长， 而且其高压绕组与 低压绕组之间的耜合不紧密， 使得变压器的潺磁大， 绕组热损耗大. 发明内容
本发明的目的就是提供一种高頻变压器， 与现有技术的高频变压器 相比， 其体积小、 重量轻， 高、 低压绕组间的磁 ¾合度高， 从而其漏抗 小.
本发明的另一目的是提供一种其低压绕组带有中心抽头的高频变 压器， 与现有技术的高頻变压器相比， 其体积小、 重量轻， 高、 低压绕 组间的磁 合度高， 从而其 ¾抗小.
为此， 本发明的高頻变压器包括：
环形铁芯， 由非晶态磁性材料制成；
包覆于所述环形铁芯上的铁芯保护盒， 由导电材料制成； 高压绕组， 用漆包线穿绕于铁芯保护盒上；
其中， 所述铁芯保护盒的形状与所述环形铁芯的形状相似， 在所述 铁芯保护盒的环形领壁上沿周向开有一个环形开口， 在所述环形开口的 内側和外側沿周向分别配置多个与所述铁芯保护盒电连接的导体引出 线， 所述环形开口内側和外側的导体引出线分别电连接在一起， 形成两 个引出端， 从而由所述铁芯保护盒与所述两个引出端构成所述高频变压 器的低压绕组.
本发明的低压绕组带有中心抽头的高頻变压器包括：
环形铁芯， 由非晶态磁性材料制成；
包覆于所述环形铁芯上的铁芯保护盒， 由导电材料制成；
高压绕组， 用漆包线穿绕于所述铁芯保护盒上；
其中， 所述铁芯保护盒由第一铁芯保护盒和第二铁芯保护盒组成， 第一铁芯保护盒和第二铁芯保护盒的形状均与所述环形铁芯的形状相 似， 第一铁芯保护盒直接包覆于所述环形铁芯上， 第二铁芯保护盒以电 绝缘方式包覆于所述第一铁芯保护盒上， 在所述第一铁芯保护盒的第一 环形顶壁和所述第二铁芯保护盒的第二环形顶壁上沿周向分别开有第一 环形开口和第二环形开口， 二者相互对应， 所述第一环形开口的内、 外 周边之一与所述第二环形开口的与之相对的周边进行连接， 在紧邻所述 第一环形开口和所述第二环形开口的未进行连接的周边的盒壁上沿周向 分别设置多个与所述第一铁芯保护盒和所述第二铁芯保护盒电连接的第 一组导体引出线和第二组导体引出线， 在緊邻所连接的两个周边之一的 盒壁上沿周向设置多个与相应的铁芯保护盒电连接的第三组导体引出 线， 在所述第二环形顶壁上与所述第一铁芯保护盒上的所述第一组导体 引出线相对应的位置上设置有多个预留孔， 所述第三组导体引出线和第 二组导体引出线分别电连接在一起， 形成第三引出端和第二引出端， 所 述第一组导体引出线分别穿过相应的预留孔， 而后电连接在一起， 形成 第一引出端， 从而由所述铁芯保护盒和所述第一、 第二和第三引出端形 成带有中心抽头的低压绕组.
附图概述
下面结合附图详细介绍本发明的高頻变压器.
图 1是本发明高頻变压器的剖面視图；
图 2 是本发明的其低压绕组带有中心抽头的高频变压器的剖面視 图. 本发明的最佳实施方式
图 1示出了本发明高频变压器的剖面視图. 该高频变压器 1主要由 下列几部分组成： 非晶态磁性材料的环形铁芯 2 , 包覆所述环形铁芯 2 的铁芯保护盒 3 , 用漆包线穿绕于所述铁芯保护盒 3上形成的高压绕组 4. 铁芯保护盒 3由导电材料制成， 可优选铝制作， 选用铜效果更好， 其形状与环形铁芯 2的形状相似. 在本发明中， 该铁芯保护盒既能起保 护非晶态软磁材料的环形铁芯的作用， 也兼作所述高频变压器的低压绕 组.在所述铁芯保护盒 3的环形顶壁 31上沿周向开有一个环形开口 32. 在所述环形开口 32 的内側和外側沿周向以均匀分布的方式分别配置多 个与所述铁芯保护盒电连接的导体引出线 61 , 62， 63， 64， 65 , 66, ···, 71 , 72, 73, 74， 75 , 76, …， 所述引出线可以为柱状 或其它形状.所述环形开口 32的内倒的所述导体引出线 61， 62, 63, 64， 65, 66…和所述外倒的所述导体引出线 71， 72, 73, 74, 75, 76, …可以分别穿出高压绕组， 而后分别电连接在一起， 从而环形开口 32内側的导体引出线 61， 62, 63, 64, 65, 66, …连接成一个引 出端 60,环形开口 32外側的导体引出线 71， 72 , 73， 74, 75, 76, - 连接成另一个引出端 70.这两个引出端 60、 70构成了本发明高频变压 器低压绕组的引出端. 本发明高频变压器的高压绕组 4可以采用漆包线 以电绝缘方式直接穿绕于所述铁芯保护盒 3上， 各高压绕线在各低压绕 组引出线间均匀分布.
图 2示出了本发明的其低压绕组带有中心抽头的高频变压器的剖面 視图. 从图中可以看出， 本发明的其低压绕组带有中心抽头的高频变压 器 100的结构与图 1所示的本发明高頻变压器相近似. 所不同的是， 该 铁芯保护盒由第一铁芯保护盒 300和第二铁芯保护盒 900所组成. 这两 个铁芯保护盒以电绝缘方式套在一起， 分别在它们的第一环形顸壁 310 和第二环形领壁 910上设置的第一环形开口 320与第二环形开口 920相 互对应. 所述第一环形开口 320的内周边或外周边中任选一个周边（例 如外周边）与所述第二环形开口 920的与之相对的周边（例如内周边） 进行连接. 在邻近余下的未进行连接的环形开口 320、 920的各一个周 边的盒壁上沿周向以均句分布方式分别设置多个与所述第一铁芯保护盒 300和第二铁芯保护盒 900 电连接的第一组导体引出线 610， 620， 630 , 640 , 650， 660 , …和第二组导体引出线 510， 520 , 530 , 540， ···， 在邻近所连接的两个周边之一（例如第二铁芯保护盒 900的 第二环形开口 920的内周边） 的盒壁上沿周向以均匀分布方式设置多个 与相应的铁芯保护盒电连接的第三组导体引出线 710， 720 , 730， 740， 750 , ··· , 在所迷第二环形顶壁 910上设置多个预留孔 810 , ···， 870， ···，它们与第一铁芯保护盒 300上的所述第一组导体引出线 610， 620， 630 , 640 , 650 , 660 , …的位置相对应， 以便于第一组导体 引出线 610， 620 , 630， 640， 650， 660 …穿过对应的预留孔 810 , ··'， 870 , …后电连接在一起， 形成第一引出端 666， 第二组导 体引出线 S10 , 520， 530 , 540，…和第三组导体引出线 710 , 720 , 730 , 740 , 750 , …分别电连接在一起形成第二、 第三引出端 999、 777，从而由所述铁芯保护盒 300、 900和第一、第二、第三引出端 666 , 999， 777构成本发明高頻变压器的低压绕组， 第三引出端形成本发明 高頻变压器的低压绕组的中心抽头.
上面以实施例的形式叙述了本发明的低压绕组带有中心抽头的高 頻变压器， 该高頻变压器的低压绕组包括两个导电材料保护盒. 然而本 领域技术人员应该了解， 如果高頻变压器的低压绕组包括以相似关系连 接的更多个铁芯保护盒， 则可以制成低压绕组多困的带有或不带有中心 抽头的变压器， 以适应更低的工作頻率或更高的输出电压. 在不脱离本 发明精神和宗旨的前提下， 所有修改后的 变压器都属于本发明的保 护范围之内.
工业应用性
由于本发明的高頻变压器利用环形铁芯的导电材料保护盒制成其 低压绕组， 取消了现有技术中穿绕于铁芯保护盒上的低压绕组， 从而使 整个高频变压器的结构更加紧凑、 体积减小、 重量减轻， 尤其适合于批 量化工业生产； 而且由于在铁芯保护盒外密绕高压绕组， 使高、 低压绕 组间的磁 合度得以提高， 减小了潙抗， 从而减小了损耗.

Claims

权 利 要 求
1. 一种高频变压器（ 1 ) , 包括：
环形铁芯（ 2 ) ， 由非晶态磁性材料制成；
包覆于所述环形铁芯（ 2 )上的铁芯保护盒（ 3 )， 由导电材料制 成；
高压绕组（ 4 ) ， 用漆包线穿绕于所述铁芯保护盒（ 3 )上； 其特征在于， 所述铁芯保护盒（ 3 ) 的形状与所述环形铁芯（ 2 ) 的形状相似， 在所述铁芯保护盒（ 3 )的环形顶壁（ 31 )上沿周向开有 一个环形开口 （ 32 )， 在所述环形开口 （ 32 ) 的内側和外倒沿周向分 别配置有多个与所述铁芯保护盒（ 3 )电连接的导体引出线（ 61， 62 , 63 , 64 , 65 , 66 , ―， 71， 72 , 73 , 74 , 75， 76 , …）， 所 述环形开口 （ 32 )内側的所述导体引出线（ 61 , 62 , 63 , 64 , 65 , 66 , ··· )和外側的所述导体引出线（ 71， 72 , 73， 74 , 75 , 76，·"） 分别电连接在一起， 形成两个引出端（ 60 , 70 ) , 从而由所述铁芯保 护盒（ 3 ) 与所述两个引出端（ 60， 70 ) 构成所述高頻变压器（ 1 ) 的低压绕组.
2. 如权利要求 1所述的高频变压器， 其特征在于， 所述铁芯保护盒 ( 3 ) 由铜制成.
3. 如权利要求 1所述的高频变压器， 其特征在于， 所述铁芯保护盒 ( 3 ) 由铝制成.
4. 一种高頻变压器（ 100 )， 包括：
环形铁芯（ 200 ) , 由非晶态磁性材料制成；
包覆于所述环形铁芯（ 200 )上的铁芯保护盒（ 300 , 900 )， 由 导电材料制成；
高压绕组（ 400 )， 用漆包线穿绕于所述铁芯保护盒（ 300 , 900 ) 上；
其特征在于， 所述铁芯保护盒（ 300 , 900 ) 由第一铁芯保护盒 ( 300 )和第二铁芯保护盒（ 900 )组成， 第一铁芯保护盒（ 300 )的 形状与所述环形铁芯（ 200 ) 的形状相似且直接包覆所述环形铁芯 ( 200 )，第二铁芯保护盒（ 900 )的形状与所述第一铁芯保护盒（ 300 ) 相似且与之电绝缘地包覆于所述第一铁芯保护盒（ 300 )上， 在所述第 一铁芯保护盒（ 300 ) 的第一环形顶壁（ 310 ) 和所述第二铁芯保护盒 ( 900 ) 的第二环形 ^壁 （ 910 ) 上沿周向分别开有第一环形开口 ( 320 )和第二环形开口 （ 920 )， 二者相互对应， 所迷第一环形开口 ( 320 )的内、 外周边之一与所述第二环形开口 （ 920 ) 的与之相对的 周边进行连接， 在紧邻所述第一环形开口 （ 320 )和所述第二环形开口 ( 920 )的未进行连接的周边的盒壁上沿周向分别设置多个分别与所述 第一铁芯保护盒（ 300 )和所述第二铁芯保护盒（ 900 ) 电连接的第一 组导体引出线（ 610， 620, 630, 640, 650, 660 , …）和第二组 导体引出线（ 510， 520， 530, 540, ) , 在紧邻所连接的两个周 边之一的盒壁上沿周向设置多个与相应的所述铁芯保护盒（ 300 , 900 )电连接的第三组导体引出线（ 710, 720, 730, 740, 750 , - ), 在所述第二环形頂壁（ 910 )上与所述第一铁芯保护盒（ 300 )上的所 述笫一组导体引出线（ 610， 620 , 630 , 640 , 650 , 660, · )相 对应的位置上设置有多个预留孔（ 810, ···, 870, …） ， 所述第三组 导体引出线（ 710， 720, 730, 740, 750, ··· )和第二组导体引出 线（ 510, 520, …）分別电连接在一起， 形成第三引出端（ 777 ) 和 第二引出端 （ 999 ),所述第一组导体引出线（ 610， 620, 630, 640, 650， 660， …）分别穿过相应的预留孔（ 810 , 870， ―） ， 而后 电连接在一起，形成第一引出端（ 666 )，从而由所迷铁芯保护盒（ 300, 900 )和所述第一、 第二和第三引出端（ 666, 999 , 777 )形成高频 变压器（ 100 ) 的带有中心抽头的低压绕组.
5. 如权利要求 4所述的高頻变压器， 其特征在于， 所迷铁芯保护盒 ( 300, 900 ) 由铜制成.
6. 如权利要求 4所述的高頻变压器， 其特征在于， 所迷铁芯保护盒 ( 300， 900 ) 由铝制成.
PCT/CN1996/000118 1995-12-28 1996-12-27 High frequency transformer Ceased WO1997024735A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PL96327469A PL181561B1 (pl) 1995-12-28 1996-12-27 Transformator wysokiej czestotliwosci PL PL PL
AU11887/97A AU1188797A (en) 1995-12-28 1996-12-27 High frequency transformer
US09/091,961 US6078239A (en) 1995-12-28 1996-12-27 High frequency transformer
DE69626856T DE69626856T2 (de) 1995-12-28 1996-12-27 Hochfrequenztransformator
EP96942997A EP0875908B1 (en) 1995-12-28 1996-12-27 High frequency transformer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN95229317.X 1995-12-28
CN95229317U CN2232618Y (zh) 1995-12-28 1995-12-28 磁性材料保护盒兼作低压绕组的变压器

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WO1997024735A1 true WO1997024735A1 (en) 1997-07-10

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KR (1) KR100392330B1 (zh)
CN (1) CN2232618Y (zh)
AU (1) AU1188797A (zh)
DE (1) DE69626856T2 (zh)
PL (1) PL181561B1 (zh)
WO (1) WO1997024735A1 (zh)

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DE19927299C2 (de) * 1999-06-15 2001-10-04 Vacuumschmelze Gmbh Schaltnetzteilübertrager hoher Leistung
US6318151B1 (en) 1999-07-26 2001-11-20 Abbott Laboratories Self-contained sterilant monitoring assembly and method of using same
KR100503455B1 (ko) * 2003-06-04 2005-07-25 삼성전자주식회사 아몰포스 자성코어를 사용하여 제조된 마이크로플럭스게이트 센서 및 그 제조 방법
CN102791076B (zh) * 2012-08-27 2014-09-03 河南兵峰电子科技有限公司 Pcb平面变压器

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KR100392330B1 (ko) 2003-09-19
PL181561B1 (pl) 2001-08-31
PL327469A1 (en) 1998-12-07
AU1188797A (en) 1997-07-28
DE69626856D1 (de) 2003-04-24
CN2232618Y (zh) 1996-08-07
EP0875908A1 (en) 1998-11-04
KR19990076917A (ko) 1999-10-25
EP0875908A4 (en) 1999-03-10
EP0875908B1 (en) 2003-03-19
US6078239A (en) 2000-06-20
DE69626856T2 (de) 2004-03-04

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