[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [TCML] 833A VTTC schematics

Dear William,

I just finished building my first TC which happens to be 833A VTTC using Steve Ward's design, which can be found at 
http://www.stevehv.4hv.org/VTTC5/833Aschematic.JPG<http://www.stevehv.4hv.org/VTTC5/833Aschematic.JPG>

There are a few things I'll comment on which you can take at face value and may or may not find helpful.

1. kickback (Wow!), touching circuit ground causes painful RF burns - I think I need to add a good earth-ground to the circuit

2. tube plate heats up red hot immediately after applying power, and the glass envelope definitely needs a cooling fan

3. to combat the red hot plate problem, I am in the process of building Steve's Staccato circuit which will then be added to the 833A filament via triac.

4. only produces 8 inch sparks - definitely needs some tuning.  I have several taps on the primary (tank) circuit, but I guess I need to alter the number of turns on the secondary?  As you can see on Steve's circuit he is able to get 22-inch sparks.  I can't figure out why mine won't make longer sparks as I have used all the same component values per the schematic.

Good luck building your dual-833A and please don't hesitate to contact me on or off list if you have any questions of feedback!

In closing, if anyone reading this has any comments on kickback or tuning my 833A vttc please let me know - any and all comments would be appreciated.

Best wishes,

Michael P Mayer
mpmayer0416@xxxxxxxxxxx<mailto:mpmayer0416@xxxxxxxxxxx>




  ----- Original Message ----- 
  From: Wm A Tickhill<mailto:wtickhill@xxxxxxxxx> 
  To: tesla@xxxxxxxxxx<mailto:tesla@xxxxxxxxxx> 
  Sent: Wednesday, November 09, 2011 6:10 PM
  Subject: [TCML] 833A VTTC schematics


  I have acquired (2) 833As. I have looked at several VTTC schematics, I
  am leaning towards Dans
  http://www.easternvoltageresearch.com/resources/vttc833a_fullschematic.pdf<http://www.easternvoltageresearch.com/resources/vttc833a_fullschematic.pdf>
               This will be my 4th coil, but my 1st VTTC. Any advice,
  suggestions, or warnings would be welcome.

  Thanks Wm A Tickhill  (aka Hairball)
  _______________________________________________
  Tesla mailing list
  Tesla@xxxxxxxxxx<mailto:Tesla@xxxxxxxxxx>
  http://www.pupman.com/mailman/listinfo/tesla<http://www.pupman.com/mailman/listinfo/tesla>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla