Re: vttc tank cap

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "claude masetto" <claudmas-at-optusnet-dot-com.au> 

Hello David,
Thanks for the advice.
I've built the single string and it runs great. Did not notice any heating
but I've only run it in short bursts. I will recalculate and build with two
strings for longer operation.
I do not fully understand how the tube impedence effects the tank circuit.
Is it better to have more capacitance than inductance in the tuned circuit
or the other way around.
Thanks
Claude.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, February 06, 2004 12:04 PM
Subject: Re: vttc tank cap


 > Original poster: humanb-at-chaoticuniverse-dot-com
 >
 > Claude, I used a single string of the PP Panasonics,
 > but under CW they heat up a bit. I found that two
 > strings works great, with nice cold caps even under CW.
 >
 > Regards,
 >
 > David Trimmell
 >
 > On Thu, 05 Feb 2004 08:14:28 -0700, "Tesla list" wrote:
 >
 >  >
 >  > Original poster: "claude masetto"
 >  > <claudmas-at-optusnet-dot-com.au>
 >  >
 >  > Hi, when I built my vttc I used these red doorknob
 > caps
 >  > for the tank cap
 >  > because they were free.
 >  > The vttc performs great but I know that the
 > capacitance
 >  > of these caps varies
 >  > greatly  with heat and voltage, so I am going to build
 >  > a small mmc.
 >  > I am going to use 9x 0.022uf polyproplene caps in
 >  > series for a tank cap of
 >  > 0.0024uf at 13500 volts which is the correct value for
 >  > this setup.
 >  > What I would like to know is one series string enough
 >  > to handle the tank
 >  > current and if not how do I calculate how many
 > parallel
 >  > strings I need.
 >  > Thanks
 >  > Claude.
 >
 >