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Dielectric Constant [message #8942 is a reply to message #8940] Sun, 08 May 2005 20:07 Go to previous messageGo to previous message
muman is currently offline  muman
Messages: 11
Registered: May 2009
Chancellor
That has been universally dissed. Dielectric properties are poor and they shift which is why old radios lose their station. Crystals were used for accurate tuning because of that. Imagine how changes in humity and particulates change the dielectric of that kind of capacitor. The dielectric constant of a vacuum is 1.0, air is ~1.0001 and plastics are 2-3 (depending on which one). Paper is 2-6 (depending on what it is impregnated with) and mica is 6.8. All of these are better and more consistent dielectrics than air.

 
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