I have been following this thread on 833A VTTC's but it appears the thread stopped at the second response. I was hoping for more replies and information. I have a VTTC using two 833A's in parallel that I built back in the late 1970's and I want to rebuild it using nice ceramic sockets for the 2 filament pins. I have 4 or 5 833A's and figured I would build a second VTTC when I rebuild my 37 year old one.
Thanks,
Allen
-----Original Message-----
From: Teslalabor <teslalabor@xxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Mon, Nov 2, 2015 12:14 pm
Subject: Re: [TCML] 833A Design Research
Long time ago I replaced a 833A tube with a 833C tube, keeping in mind that
both tubes should have the same electrical parameters, only difference is
the 833C has a graphite anode. The system was a perfectly working Staccato
VTTC BUT with the 833C, the Staccato mode didn't work properly any longer.
I
never found an explanation for this.
Regards,
Stefan
----- Original
Message -----
From: "David Rieben" <drieben@xxxxxxx>
To: "Tesla Coil Mailing
List" <tesla@xxxxxxxxxx>
Sent: Monday, November 02, 2015 12:03 AM
Subject: Re:
[TCML] 833A Design Research
> Chris,
> I think John Freau still follows
this forum some and he has been the guru
> of VTTCs. Also, alongwith Freau,
Steve Ward pioneered a lot of staccato or
> pulsed, low duty cycle vacuum tube
coilcircuits that allow these tubes to
> be momentarily pushed FAR beyond
their nameplate continuousratings for
> very long pulsed sword like sparks.
>
833A tubes have a plain metal (tungsten?) grid plate, whereas the 833C's
>
have a graphite grid plate, which means they can take a bit more heat than
>
their (A) counterparts.
> David Rieben
>
>
>
> On Sunday, November 1,
2015 10:29 AM, Chris Boden
> <cboden@xxxxxxxxxxxxxxxx> wrote:
>
>
>
Greetings Pupman,
>
> Who's got the most experience with 833 class
VTTCs?
>
> What is the max arc length while maintaining a high reliability for
a dual
> 833 coil?
>
> Is there a significant difference between the 833 and
the 833A tubes?
>
> Who has the best writeup/schematic for one?
>
> We're
looking at building one for a demonstration piece in the new HVL and
> this is
a field I have absolutely no idea what I'm doing. ;) I could
> certainly use a
little guidance.
>
> Ideas? Suggested resources?
>
> Thank you guys :)
>
>
--
>
> Chris Boden
> President
> The Geek Group National Science Center
>
www.thegeekgroup.org
> We Build Awesome
>
> --
>
>
> This email may
contain confidential and privileged material for the sole
> use of the intended
recipient. Any review or distribution by others is
> strictly prohibited. If
you are not the intended recipient please contact
> the sender and delete all
copies.
>
> _______________________________________________
> Tesla mailing
list
> Tesla@xxxxxxxxxx
>
http://www.pupman.com/mailman/listinfo/tesla
>
>
>
>
_______________________________________________
> Tesla mailing list
>
Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing
list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla