DE617146C - Process for eliminating the edge effect on metal deposits on capacitors, insulators, etc. like - Google Patents
Process for eliminating the edge effect on metal deposits on capacitors, insulators, etc. likeInfo
- Publication number
- DE617146C DE617146C DE1930617146D DE617146DD DE617146C DE 617146 C DE617146 C DE 617146C DE 1930617146 D DE1930617146 D DE 1930617146D DE 617146D D DE617146D D DE 617146DD DE 617146 C DE617146 C DE 617146C
- Authority
- DE
- Germany
- Prior art keywords
- insulators
- capacitors
- eliminating
- edge effect
- metal deposits
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/20—Arrangements for preventing discharge from edges of electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
Verfahren zur Beseitigung der Randwirkung an Metallbelegungen von Kondensatoren, Isolatoren u. dgl. Es ist bekannt, daß an den Rändern von Metallteilen von Kondensatoren und Isolatoren meist zuerst flberschläge oder Durchschläge auftreten. Zur Vermeidung dieser Schwierigkeiten ist bereits vorgeschlagen worden, die Metallteile mit halbleitenden, auf dem Dielektrikum aufliegenden Randzonen zu versehen, durch die eine gleichmäßige Spannungsverteilung am Rande der Metallteile erzeugt wird. Man hat auch zu diesem Zwecke vorgeschlagen, halbleitende Randzonen durch Auftragen von chinesischer Tusche herzustellen.Process for eliminating the edge effect on metal coverings from Capacitors, insulators and the like. It is known that on the edges of metal parts of capacitors and insulators, flashovers or breakdowns usually occur first. To avoid these difficulties it has already been proposed that the metal parts to be provided with semiconducting edge zones resting on the dielectric which creates an even distribution of stress on the edge of the metal parts. For this purpose it has also been proposed to apply semiconducting edge zones from Chinese ink.
Es hat sich gezeigt, daß die Leitfähigkeit der Randzonen verhältnismäßig gering sein muß und in der Größenordnung von i o$ Ohm je Zentimeter liegen muß. Die Bemessung des Widerstandes der Randzone bereitet bei den bekannten Verfahren verhältnismäßig große Schwierigkeiten. Auch gelingt es nicht immer, Lufteinschlüsse zwischen -dem Dielektrikum und der halbleitenden Randzone zu vermeiden. Derartige Lufteinschlüsse sind besonders schädlich, weil durch die chemische Aktivierung der eingeschlössenen Luft, die unter dem Einfiuß des elektrischen Feldes stattfindet, das Dielektrikum angegriffen wird.It has been shown that the conductivity of the edge zones is proportionate must be small and must be in the order of magnitude of 10 ohms per centimeter. The measurement of the resistance of the edge zone prepares with the known methods relatively great difficulties. It is also not always possible to get air pockets to avoid between -the dielectric and the semiconducting edge zone. Such Air pockets are particularly harmful because of the chemical activation of the trapped air that takes place under the influence of the electric field, the dielectric is attacked.
Gemäß der Erfindung werden diese Schwi:erigkeitendadurch beseitigt, daß man halb, leitende Materialien aus Gummi, der einen: leitenden oder halbleitenden Stoff, z. B. Ruß, in feiner Verteilung enthält, als halbleitenide Randzone verwendet. Halbleitende Widerstandsmaterialien aus Gummi, welche einen leitenden Stoffenthalten, sind bereits bekannt. Durch ihre Verwendung als halbleibende Randzonen wird der besondere -Vorteil erzielt, daß durch Zusammenpressen der halbleitenden Randschicht Lufteinschlüsse beseitigt werden können und daß ferner durch Beeinflussung der Schichtstärke und des Gehaltes an leitenden bzw. halbleitenden Stoffen der Widerstand in weiten Grenzen geändert werden kann.According to the invention, these difficulties are eliminated by that one semi, conductive materials made of rubber, one: conductive or semi-conductive Fabric, e.g. B. soot, contains in fine distribution, used as a semiconducting edge zone. Semiconducting resistance materials made of rubber, which contain a conductive substance, are already known. By using them as semi-permanent edge zones, the special advantage achieved that by pressing together the semiconducting surface layer Air inclusions can be eliminated and that also by influencing the layer thickness and the content of conductive or semiconductive substances, the resistance in a wide range Limits can be changed.
iSchichten aus derartigem Gummi können mit Hilfe bekannter K 1ebemittel auf dem Dielektrikum so befestigt werden, daß sie die Metallteile umgeben und mit ihnen in leitender Berührung stehen. Unter Umständen kann man auch Gummischichten durch Aufspritzen auftragen und diese, nachdem sie aufgespritzt sind, vulkanisieren. Wenn man den Widerstand der Randzone mach dem Umfange zu zunehmen lassen will, kann man auch mehrere Schichten verschiedener Breite übereinanderkleben oder eine Randzone mit dreleckförrnigem Querschnitt verwenden.Layers of such rubber can be made with the aid of known adhesives be attached to the dielectric so that they surround the metal parts and with are in conductive contact with them. Under certain circumstances you can also use rubber layers apply by spraying and vulcanize them after they have been sprayed on. If you want to increase the resistance of the edge zone, you can you can also glue several layers of different widths on top of each other or an edge zone Use with a triangular cross-section.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE617146T | 1930-11-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE617146C true DE617146C (en) | 1935-08-13 |
Family
ID=6577051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1930617146D Expired DE617146C (en) | 1930-11-08 | 1930-11-08 | Process for eliminating the edge effect on metal deposits on capacitors, insulators, etc. like |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE617146C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE975725C (en) * | 1951-06-14 | 1962-06-28 | Siemens Ag | In an electrical device, e.g. B. radio or television, built-in electrical capacitor |
DE1133035B (en) * | 1952-08-25 | 1962-07-12 | Siemens Ag | Front-contact electrical capacitor |
-
1930
- 1930-11-08 DE DE1930617146D patent/DE617146C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE975725C (en) * | 1951-06-14 | 1962-06-28 | Siemens Ag | In an electrical device, e.g. B. radio or television, built-in electrical capacitor |
DE1133035B (en) * | 1952-08-25 | 1962-07-12 | Siemens Ag | Front-contact electrical capacitor |
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