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Old February 24th 11, 02:56 AM posted to sci.electronics.design,rec.radio.amateur.homebrew
John - KD5YI[_3_] John - KD5YI[_3_] is offline
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First recorded activity by RadioBanter: Dec 2010
Posts: 54
Default help designing gimmick capacitor

On 2/23/2011 8:38 PM, FigureItOut wrote:
On Sun, 20 Feb 2011 14:26:42 -0600, wrote:


wrote in message
...
On Sun, 20 Feb 2011 09:20:12 -0600, wrote:

http://i395.photobucket.com/albums/p...mspaced5mm.jpg

The plates are 1 cm x 1 cm spaced 5 mm apart.


Ever consider simply using a proper air core variable cap?


You have any 0.3pf air variables.


You could manage .3 with the empty tank alone.


Can you back that up with calculations using believable numbers?


Why is this one improper?
Mikek


Because applying the lid changed the value. Duh.

That air gap is so big that even local electrostatic fields would ****
with it.



Plagiarism from an earlier post aside, you are on the verge of offering
some legitimate advice. But your delivery sucks more than a vacuum.
Maybe you have a black hole. You should look into that. Literally.