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Old 16th Jun 2018, 12:45 pm   #9
Viewmaster
Hexode
 
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Join Date: Jul 2016
Location: Ashby de la Zouch, Leicestershire, UK.
Posts: 253
Default Re: Bach with sparks!

Thanks very much for that Al, much appreciated, but now sparking OK...
Made bigger coil (750 turns)...See my post No6 on this thread.

As I mentioned a variable C in the tank with or without my doorknob cap already there will soon establish tuning errors.

Eventually my spark length will not as big usual as I am using full wave and smoothed DC supply to valves.. It's 4 inches at present without any tuning.

I use DC to avoid any 50 hertz sound that is normally heard with VTTC's. It's good sound that is important not a long spark.

My 2 MOT's run cold so far.

And Dale it's not a singing plasma arc now but on/off spark at the musical notes frequencies.
A midi converter kit I am waiting to receive is polyphonic so hope to hear more that one note.

Thanks again all for help.
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Last edited by Viewmaster; 16th Jun 2018 at 12:50 pm.
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