Check patentability & draft patents in minutes with Patsnap Eureka AI!

Vacuum variable capacitor

A capacitor and vacuum technology, applied in the details of capacitors, mechanically variable capacitors, capacitor manufacturing, etc., can solve problems such as low thermal efficiency, inefficient heat transfer, and increased heat generation

Active Publication Date: 2013-03-06
COMET
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An electrode made of tungsten or molybdenum will consume more than three times the electrical energy in the form of heat compared to a similar copper electrode, and this extra heat will be conducted away through the electrode about 2.5 times less efficiently than through a copper electrode
This combination of increased heat generation and less efficient heat transfer means that the cooling requirements for electrodes made of (or coated with) tungsten or molybdenum are greatly increased

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vacuum variable capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The invention will be described with reference to Figure 1, which shows a typical variable vacuum capacitor arrangement. The figure shows a device in which a set of stationary cylindrical electrodes (2) is spaced apart from a set of movable cylindrical electrodes (1) in a vacuum (3). The bellows (7) allow the relative movement of the movable electrodes while maintaining the integrity of the vacuum (3) in the housing (4, 5, 6). The housing may comprise a ceramic housing wall (6) vacuum-tightly bonded or otherwise secured to an end element (4, 5), which may be made of an electrically conductive material.

[0027] As described above, selecting an electrode surface material of greater hardness and / or melting point may have the effect of limiting or slowing the development of avalanche breakdown if electrons or ions are ejected from the electrode surface. Using aluminum electrodes, on the other hand, the initiation of avalanche situations is reduced by a different process, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thermal conductanceaaaaaaaaaa
thermal conductanceaaaaaaaaaa
Login to View More

Abstract

A vacuum capacitor (8) is described, having at least two electrodes (1, 2) in a vacuum (3), the electrodes being manufactured from, or coated with, aluminium or an aluminium alloy, and the housing of the vacuum capacitor (8) comprising an insulating (eg ceramic) part and two or more conducting parts (4, 5).

Description

technical field [0001] The invention relates to the field of vacuum capacitors. Vacuum capacitors are well known in the art and are used in applications requiring high frequency and high power. Common applications include, for example, oscillating circuits used in high-power radio frequency transmission and high-frequency power supplies in the manufacture of semiconductor solar panels and flat panel displays. Background technique [0002] A capacitor consists of two or more conductive surfaces, commonly referred to as electrodes, separated by a dielectric medium. In the case of vacuum capacitors, the dielectric medium is vacuum. Vacuum capacitors usually require high vacuum (10 -6 Torr or better). A vacuum is maintained within an airtight enclosure, which also surrounds the electrodes. A typical case may comprise an insulating ceramic cylinder fitted with a metal ferrule fastened to the ceramic cylinder by a bonding technique which ensures a hermetic seal enabling a hig...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01G5/01H01G5/14
CPCH01G5/01H01G5/14H01G5/16H01G5/04H01G13/00
Inventor 迈克·阿布雷希特沃尔特·比格勒菲利普·贾吉马克·约阿希姆·米尔德纳
Owner COMET
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com