DE459556C - Rotary capacitor with device to protect against external disturbing influences on the capacity - Google Patents
Rotary capacitor with device to protect against external disturbing influences on the capacityInfo
- Publication number
- DE459556C DE459556C DEB121395D DEB0121395D DE459556C DE 459556 C DE459556 C DE 459556C DE B121395 D DEB121395 D DE B121395D DE B0121395 D DEB0121395 D DE B0121395D DE 459556 C DE459556 C DE 459556C
- Authority
- DE
- Germany
- Prior art keywords
- capacitor
- capacity
- protect against
- against external
- disturbing influences
- 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
- 239000003990 capacitor Substances 0.000 title claims description 19
- 239000011888 foil Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
- H01G5/04—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of effective area of electrode
- H01G5/06—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of effective area of electrode due to rotation of flat or substantially flat electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
Drehkondensator mit Einrichtung zum Schutz gegen störende äußere Beeinflussungen der Kapazität. Es sind bereits Vorschläge für Einrichtungen zum Schutz gegen störende äußere Beeinflussungen der Kapazität bei Kondensatoren von Radioapparaten gemacht worden. So hat man beispielsweise die Drehkondensatoren in geerdete Faradaysche Käfige eingeschlossen, jedoch verteuert diese Anordnung die Ausführung der Drehkondensatoren sehr.Variable capacitor with device for protection against external disturbances the capacity. There are already proposals for devices to protect against disruptive external influences on the capacitance made in capacitors of radio sets been. So you have, for example, the variable capacitors in Faraday earthed Cages included, but this arrangement makes the design of the variable capacitors more expensive very.
Von der Erkenntnis ausgehend, daß die störenden Beeinflussungen der Kapazität in der Hauptsache nur durch die Hand beim Einstellen des Drehkondensators an der oberen Seite des Empfangsgeräts hervorgerufen werden, hat man auch bereits diese obere Seite des Kondensators innen mit einer besonderen Metallfolie belegt, die geerdet ist. Hierdurch aber entsteht die Notwendigkeit, alle anderen Teile des Drehkondensators sorgfältig gegen diese Metallfolienauflage zu isolieren.Based on the knowledge that the disturbing influences on the Capacity in the main only by hand when adjusting the variable capacitor on the upper side of the receiving device, one already has this upper side of the capacitor is covered on the inside with a special metal foil, that is grounded. But this creates the need for all other parts of the To insulate the variable capacitor carefully against this metal foil layer.
Gegenstand der vorliegenden Erfindung ist ein Drehkondensator, dessen Schutz gegen störende äußere Beeinflussungen der Kapazität dadurch erreicht wird, daß als geerdeter Schutz die beiden metallischen, von. den anderen Kondensatorteilen elektrisch isolierten Kondensatorgrundplatten oder auch nur die dem Drehknopf benachbarte dienen.The present invention is a variable capacitor whose Protection against disruptive external influences on the capacity is achieved by that the two metallic, from. the other capacitor parts electrically isolated capacitor baseplates or just those adjacent to the rotary knob to serve.
Eine solche Ausführungsform hat gegenüber den bisher bekannten Einrichtungen den Vorteil, daß durch sie weder eine besondere Verteuerung in der Herstellung noch eine Erschwerung beim Einbau oder Zusammenbau von Empfangsgeräten entsteht.Such an embodiment has compared to the previously known devices the advantage that through them neither a particular increase in the cost of manufacture nor a difficulty arises when installing or assembling receiving devices.
Die Erfindung ist in den beiliegenden Zeichnungen in beispielsweiser Ausführungsform veranschaulicht, und zwar zeio-t: Abb. z den Drehkondensator in Ansicht, Abb. z denselben von oben gesehen, Abb. 3 einen Schnitt nach Linie A-B der Abb. z, Abb. d. eine metallische Grundplatte des Drehkondensators im Schnitt.The invention is illustrated by way of example in the accompanying drawings Embodiment illustrated, namely zeio-t: Fig. Z the variable capacitor in View, Fig. Z the same seen from above, Fig. 3 a section along line A-B of Fig. z, Fig. d. a metallic base plate of the variable capacitor in section.
Wie aus den Zeichnungen ersichtlich, ist erfindungsgemäß so vorgegangen worden, daß die in der Abb. Z dargestellte, dem Drehknopf benachbarte metallische Grundplatte a von den übrigen Teilen des Kondensators elektrisch isoliert angeordnet ist, wobei eine Lasche e zum Anschluß für die Erdleitung dient, so daß diese Grundplatte als geerdete Schutzplatte wirkt. Die Erdleitung kann auch angelötet oder in einer anderen Art und Weise leitend befestigt werden. Gemäß Abb. 3 ist die metallische Grundplatte a durch Isolierstücke b bzw. c von den übrigen Teilen des Drehkondensators isoliert. Diese Isolierung kann in jeder Art und Weise mittels an sich bekannter Einrichtungen bewirkt werden.As can be seen from the drawings, this was the procedure according to the invention been that shown in Fig. Z, the rotary knob adjacent metallic Base plate a arranged electrically insulated from the remaining parts of the capacitor is, with a tab e is used to connect the ground line, so that this base plate acts as a grounded protective plate. The ground wire can also be soldered on or in a be attached conductively in another way. According to Fig. 3, the metallic Base plate a through insulating pieces b and c from the remaining parts of the variable capacitor isolated. This isolation can be done in any way by means of known ones Facilities are effected.
Erfindungsgemäß können auch beide metalllischen Grundplatten des Kondensators als geerdete Schutzplatten dienen.According to the invention, both metallic base plates of the capacitor can serve as earthed protective plates.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB121395D DE459556C (en) | Rotary capacitor with device to protect against external disturbing influences on the capacity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB121395D DE459556C (en) | Rotary capacitor with device to protect against external disturbing influences on the capacity |
Publications (1)
Publication Number | Publication Date |
---|---|
DE459556C true DE459556C (en) | 1928-05-08 |
Family
ID=6995510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB121395D Expired DE459556C (en) | Rotary capacitor with device to protect against external disturbing influences on the capacity |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE459556C (en) |
-
0
- DE DEB121395D patent/DE459556C/en not_active Expired
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