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    Wound film capacitor
    1.
    发明授权
    Wound film capacitor 失效
    绕线电容器

    公开(公告)号：US3638086A

    公开(公告)日：1972-01-25

    申请号：US3638086D

    申请日：1970-03-05

    Applicant: ILLINOIS TOOL WORKS

    Inventor： RAYBURN CHARLES C

    IPC: H01G4/245 ,  H01G4/32 ,  H01G1/14 ,  H01G3/17

    CPC classification number: H01G4/245 ,  H01G4/32

    Abstract: Wound film capacitor and method of making wherein at least two layers of shrinkable thermoplastic dielectric are sandwiched between two layers of metallized or, preferably, foil, electrodes. A pair of lead wires are then positioned against the outer surfaces of the foils and rotated together in the manner of mandrels to wind the film and foil layers into a capacitor body. Flat, or otherwise deformed portions formed on a short portion of one end of each lead wire which is outside of the capacitor during winding are then drawn into the center of the capacitor by pulling on the other end of the wires. The capacitor body is then heated to shrink the dielectric and thereby cause the leads to be held in extremely firm engagement with the foil layers. Since the foils encircle at least 270* of the periphery of the lead wires, a very firm, low resistance, pressure bond is made which renders the capacitor able to withstand substantial amounts of heat applied during a soldering operation. The elimination of mandrel holes allows the capacitor to be extremely compact and usable for many applications without the addition of additional thicknesses of sealing materials.

    Abstract translation: 缠绕膜电容器及其制造方法，其中至少两层可收缩热塑性电介质夹在两层金属化或优选箔片电极之间。 然后将一对引线定位在箔的外表面上并以心轴的方式一起旋转，以将薄膜和箔层卷绕成电容器本体。 在卷绕期间在电容器外侧的每个引线的一端的短边部分上形成平坦的或其它变形的部分，然后通过拉动导线的另一端而被拉入电容器的中心。 然后将电容器体加热以使电介质收缩，从而使引线与箔层保持非常牢固的接合。 由于箔片环绕引线周边的至少270°，所以制造了非常牢固的低电阻压力键，这使得电容器能够承受在焊接操作期间施加的大量热量。 消除心轴孔允许电容器非常紧凑并且可用于许多应用，而不增加额外厚度的密封材料。

    Multilayer plastic chip capacitor
    9.
    发明授权
    Multilayer plastic chip capacitor 失效
    多层塑料芯片电容器

    公开(公告)号：US3654532A

    公开(公告)日：1972-04-04

    申请号：US3654532D

    申请日：1970-05-25

    Applicant: ILLINOIS TOOL WORKS

    Inventor： RAYBURN CHARLES C

    IPC: B23D51/04 ,  H01G4/30 ,  H01G1/14

    CPC classification number: H01G4/304 ,  B23D51/04

    Abstract: Multiplayer chip capacitors and method of making whereby twoside metalized plastic strip material is wound in annular hoop form and opposite sides of hoop are pressed together to bond layers together. The metalized plastic strip is pre-coated with a very thin coating of a heat sealable material such as plastic which functions as a capacitor dielectric and also as a bonding agent. The marginal edges of the pressed hoop are sprayed with molten aluminum at high velocity which makes contact with the edges of the thin metalized layers and penetrates the plastic coating to also provide contact with marginal portions of the metalized electrode coatings. The flattened hoop is then sliced into a plurality of capacitors which can be made to have any value desired over a large range by cutting them to a particular width. Values can be controlled very precisely by first cutting and testing one capacitor and then altering the width of later cut capacitors relative to the tested one. The uncut capacitors can be stored and cut to value as needed.

    Abstract translation: 多芯片电容器和制造方法，其中两侧金属化塑料条材料以环形箍形式缠绕并且箍的相对侧压在一起以将层粘合在一起。 金属化塑料条带预涂覆有诸如塑料的可热封材料的非常薄的涂层，其用作电容器电介质并且还用作粘合剂。 压箍的边缘以高速喷射熔融铝，其与薄金属化层的边缘接触并穿透塑料涂层，以提供与金属化电极涂层的边缘部分的接触。 然后将扁平的箍切成多个电容器，通过将它们切割成特定的宽度，可以使其在大范围内具有期望的任何值。 可以通过首先切割和测试一个电容器，然后改变后期切割电容器相对于被测试的电容器的宽度，可以非常精确地控制数值。 未切割电容器可以根据需要进行存储和切割。

    Multilayer capacitor and process for adjusting the value thereof
    10.
    发明授权
    Multilayer capacitor and process for adjusting the value thereof 失效
    多层电容器和调整其价值的过程

    公开(公告)号：US3648132A

    公开(公告)日：1972-03-07

    申请号：US3648132D

    申请日：1970-04-20

    Applicant: ILLINOIS TOOL WORKS

    Inventor： RAYBURN CHARLES C

    IPC: H01G4/255 ,  H01G4/30 ,  H01G3/07 ,  H01G3/26

    CPC classification number: H01G4/255 ,  H01G4/30 ,  Y10T29/435

    Abstract: Multilayer capacitor is formed so that certain of its alternating layers of electrodes have marginal portions which terminate at an edge of the capacitor while others are located entirely internally of the capacitor so that their marginal portions are positioned short of the edge. By removing some of the dielectric material which separates the concealed electrode margins from the edge, the concealed electrodes can be electrically connected to the electrodes terminating at the edge to increase the capacitance of the capacitor. The process permits a production batch of capacitors which normally includes a great percentage of capacitors differing from a desired value by more than acceptable tolerance levels to be simply and quickly adjusted so that all, or substantially all, of the capacitors in the batch will fall within the accepted tolerance level. The adjusting is done without altering the dimensions of the capacitors or disturbing the electric field region in any manner. In one embodiment of the invention, a plurality of different sized electrode areas are formed in one plane. By removing material from the several edges of the capacitors to expose various combinations of these areas, the value of the capacitor can be varied over a large range. For example, by providing three different size electrode areas, it is possible to achieve a capacitor having capacitance values in whole number multiples of each other in a range of from one to nine capacitance units. In another modification, a conductive terminal coating connecting all electrode areas of like polarity can be removed from certain edges of the capacitor to provide selective downward adjustment of the capacitor value.

    Abstract translation: 形成多层电容器，使得其交替的电极层的某些具有终止于电容器边缘的边缘部分，而其它电极整体位于电容器的内部，使得它们的边缘部分位于比边缘更短的位置。 通过去除隐藏的电极边缘与边缘分离的一些电介质材料，隐藏的电极可以电连接到终止于边缘处的电极，以增加电容器的电容。 该过程允许生产批次的电容器，其通常包括与期望值不同的大百分比的电容器超过可接受的公差电平，以简单且快速地调整，使得批次中的所有或基本上全部的电容器将落入 公认的公差水平。 在不改变电容器的尺寸或以任何方式扰乱电场区域的情况下进行调整。 在本发明的一个实施例中，在一个平面中形成多个不同尺寸的电极区域。 通过从电容器的几个边缘去除材料以暴露这些区域的各种组合，电容器的值可以在很大的范围内变化。 例如，通过提供三个不同尺寸的电极区域，可以实现在1至9个电容单元的范围内具有彼此的整数倍的电容值的电容器。 在另一变型中，可以从电容器的某些边缘去除连接相同极性的所有电极区域的导电端子涂层，以提供对电容器值的选择性向下调节。

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