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Self resonance of a coil
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Hi Group,
If I know the dimensions of a coil, i.e. r=diameter/2, wire gauge,
l=length, n=number of turns,
is there an approximate formula for the self-resonance? I thought I had it
but can't find it now,
or maybe it doesn't matter if the coil is top loaded with a large toroid. I
know the
inductance is found approximately by L=n*n(r*r/(9*r+10*l)) so I use the
1/2PIsqr(LC).
Just curious,
Dave