Rolled Caps

• To: tesla-at-pupman-dot-com
• Subject: Rolled Caps
• From: Rodney Graham Davies <Rodney.Davies-at-anu.edu.au>
• Date: Wed, 5 Feb 1997 01:13:32 +1100 (EST)
• Subscriber: Rodney.Davies-at-anu.edu.au Tue Feb 4 22:11:23 1997

Hi All,

Um, I think R.Quick posted a message a long time ago about 
calculating/designing rolled capacitors.

I was just curious to know if anyone has got the formula for calculating 
the capacitance for a rolled cap?

I'm looking at building a couple, but need to design for around 0.09uF, 
so far the doc's I've read from the funet.fi site are designs for smaller 
valued types (around .02uF), so I thought if there's a formula out there, it 
would be a fantastic guide to design and construction.

I'm also needing the voltage rating to be around 40-50KVDC as the 
pig-pole I'm using is 12700V -at- 0.787A (10KVA), and the calculated 
capacitance required for my coil is 0.187uF. Which makes this transformer 
fairly ideal...

Thanks Guys!

Catchya's Later!

Rod 'Down Under

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