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- To: tesla@xxxxxxxxxx
- Subject: Pri./Sec. Tuning
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Tue, 19 Apr 2005 14:39:43 -0600
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Original poster: "Mike Knowlton" <amdx@xxxxxxxxxxx>
I have been reading this group for about six weeks now and
see confusing info on pri./sec. tuning. ( to me anyway)
My understanding is you have a secondary coil with toroid (tophat) that
is resonant at a fundumental frequency.
Then you wind a Primary, and wire it with capacitors in parallel, then
adjust a tap on the primary until the primary is resonant at the same
frequency as your secondary.
(I understand this is performed with the secondary in place.)
My confusion is sometimes I see people say tune your primary lower or
higher. Shouldn't they ring at the same frequency?
Also as a tuning method, could you lightly couple a scope probe to the
circuit and drive the primary with a signal generator, then watch for
double peaks, then adjust the primary inductance (or capacitance) until you
have a single peak.
P.S. I aquired an 8.5" x 42" clear plastic tube today, I think it's my
start to building a TC !
"clear plastic"? How do I find out what type of plastic this is?
It has a 1/4" wall thickness.