Hi Chip, I have a couple of suggestions:
1) Try swapping the connections to the feedback coil. It could be that it is wound in the wrong direction and driving your tube out of phase, which would lead to no spark.
2) It looks like you're not using the staccato feature of Steve's design. Make sure that you connect that side of the tube filament to ground (rather than through the triac).
Good luck!
Matt Lewis, Fairlee VT
-----Original Message-----
From: Tristan and Kayden gaming <maxford1980@xxxxxxxxx>
To: tesla@xxxxxxxxxx <tesla@xxxxxxxxxx>
Sent: Mon, Nov 23, 2020 7:34 pm
Subject: [TCML] New VTTC no spark
I built a VTTC over the past couple months. I am in no way an electronics
wizard. This will become more evidence I proceed. I used Steve Wards Single
A833 tube diagram. I have checked and triple checked all on the wiring. It
all seems correct. I can not get a spark out of it. Mind you, I live in an
apartment and I am trying to power it on a 15amp breaker. It will trip the
breaker at about 120 volts on the meter. I have set a CFL bulb on the
toroid while I do it, I never get a flicker. I bought the Doorknob caps
from eBay and haven’t really been able to determine if any of them are bad.
They are not shorted. I have tried (2) different A833 tubes. Same results.
I guess my first question is, will there be any discharge from the coil at
lower voltages or does the tube have to start before I get anything from
the output. I may just need to take it somewhere that I have more power
available. Thanks in advance for any help.
Chip Ford
https://drive.google.com/drive/folders/1-0_wMEyelu__OXy87W0I6wz9VlX6m6OF
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