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Re: CAPACITOR QUESTIONS !?!
>> BTW, as long as were talking about LDPE, is there much of a
>> difference (for cap use) between LDPE and HDPE ? Are their
>> properties about the same ?
>
>In general Tesla coil applications you will find the LDPE to be
>much more versitile and useful than HDPE. A good example: in
>capacitor applications where any bend or curve of the dielectric
>is required HDPE will "craze" with microfractures if it is
>stressed excessively. These stress cracks cause premature failure
>of the dielectric = don't use it in rolled caps where the rolled
>design gives x2 the value per given plate area.
(I'm kind of stuck with it, since the only supplier I could
find around only had 30mil in HDPE, unless I wanted to special
order 300lbs :) I'm thinking of gently heating it as it rolls,
hopefully this will prevent cracking, or I'll go for a larger
diamater and use a pail or something larger than PVC pipe
to stuff it in, so the HDPE is not stressed as much.
Comments ?
Chris
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|Chris Cudahy | B.SC. CS/Math - getting there|
|ccudahy-at-calumet.yorku.ca | Swim Bike Run Colapse |
|http://www-home.calumet.yorku.ca/ccudahy/www/home.htm |
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