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RE: Single 833A VTTC

Original poster: "Cameron B. Prince" <cplists@xxxxxxxxxx>

Hi Ed,

> Something strange here.  If you mean it still "works" after you
> reverse the connections to the feedback coil you probably have
> something kinda strange happening and the idea of capacitive feedback
> supporting the oscillation becomes more likely.

Yes, it works both ways... But as I said, I get many fine little arcs on the
top turn of the grid coil with the guard plate in place. If I remove the
guard ring, the arcs start hitting the secondary all the way around.

When the grid coil is connected the other direction, I rarely need the guard
plate. It only seems to arc when the staccato is adjusted to a misfire of

I am going to do more testing tonight and tomorrow and will post documented