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Re: capacitors
- To: tesla@xxxxxxxxxx
- Subject: Re: capacitors
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Sat, 15 Oct 2005 17:42:27 -0600
- Delivered-to: testla@pupman.com
- Delivered-to: tesla@pupman.com
- Old-return-path: <vardin@twfpowerelectronics.com>
- Resent-date: Sat, 15 Oct 2005 17:43:36 -0600 (MDT)
- Resent-from: tesla@xxxxxxxxxx
- Resent-message-id: <lINkM.A.4pG.nQZUDB@poodle>
- Resent-sender: tesla-request@xxxxxxxxxx
Original poster: Ed Phillips <evp@xxxxxxxxxxx>
" Usually, mica
caps are not good for Tesla work because they tend to overheat (power
dissipation factor >1%) and the dielectric is brittle and not self
healing."
Something wrong there. Good mica caps have a very low dissipation
factor (<0.001) and work great for RF as long as you don't exceed their
voltage/current/frequency ratings. I have an 0.006 ufd 30 kV Sangamo
capacitor which works just fine with a 15 kV NST and suitable gap. Wish
I had about 3 more. Mica capacitors were used for spark transmiters for
many years with great success.
Ed