[TCML] Re: Tesla Digest, Vol 63, Issue 9

[Wm A Tickhill <wtickhill@xxxxxxxxx>]

Stefan,

My (2) 833 Vttc staccato works equally well with A's or C's. I once
had erratic behaviour with a poor ground return to my triac.

Wm A Tickhill

On Wed, Jan 9, 2013 at 2:00 PM,  <tesla-request@xxxxxxxxxx> wrote:
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> Today's Topics:
>
>    1. Differences between 833A and 833C Tubes in VTTC operation
>       (Teslalabor)
>    2. 942C breakdown voltage (Mark X2)
>    3. Visiting the USA (Grant)
>
>
> ---------- Forwarded message ----------
> From: "Teslalabor" <teslalabor@xxxxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Cc:
> Date: Tue, 8 Jan 2013 18:07:47 +0100
> Subject: [TCML] Differences between 833A and 833C Tubes in VTTC operation
> Hello,
>
> here is a question for the tube-specialists: What exactly are the differences between a 833A and 833C tube? I always thought, the only difference is the material of the anode: 833A has a metal-anode and the 833C graphite anode. But are there any other differences in the parameters of this tubes which could affect VTTC operation? My problem is:
>
> I have built a VTTC with a 833A tube, which is running very very well. It consists of a statccato driver also. Today I simply replaced the 833A tube with a 833C. The sparks are as long as before with the 833A tube, but the staccato doesn't work properly any more. The impulses are unevenly and no more controllable. No other parameters were changed, only the tube replaced! So how can this be?
>
> Regards,
> Stefan
>
>
>
> ---------- Forwarded message ----------
> From: Mark X2 <susax2@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Cc:
> Date: Wed, 9 Jan 2013 00:34:40 +0100
> Subject: [TCML] 942C breakdown voltage
> Hi all,
>
> has anyone done some destructive testing on today's 942C caps?
> I'm curious at what practical DC voltage these caps will fail completely.
>
> Cheers,
> Mark
>
>
>
> ---------- Forwarded message ----------
> From: Grant <grants.mailbox@xxxxxxxxx>
> To: tesla@xxxxxxxxxx
> Cc:
> Date: Wed, 9 Jan 2013 15:22:08 +0200
> Subject: [TCML] Visiting the USA
> Hi again,
>
> It has been a long long time since I posted anything on the list, my
> series stacked plate capacitor debacle in 2008 probably being my last
> active posts. lol
>
> I am travelling from South Africa to the states in just over a week
> and was wondering if there might be any meets in the area while I am
> there or indeed if there are any active coilers with larger VTTC's
> and/or DRSSTC's who might not mind a visitor and a chat over a beer or
> 3?
>
> I will be visiting family in Lawrenceville, Georgia from the 20th Jan
> to the 8th Feb with a road trip down to Port Canaveral in the second
> week.
>
> Happy coiling and brightest sparks to you all
> Grant Visser
>
> grants.mailbox@xxxxxxxxx
>
>
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