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Current Node?
Hi All,
while doing some primative measurements of Fres using a DMM and
signal generator It occured to me to rig up a current pick up and the
results leave me a little confused. My coil is 147cm wound length 32.5cm
diameter wound with 0.6mm wire, for about 366mH. I was driving it from the
base with the 5Ohm output of an Advance 15-50000Hz signal generator at
approx. 25V p-p. I swept up and down the coil with my probe and found that
there appeared to be a current node about 35cm from the base. Could it be
that the very large inductance of the output transformer of the sig. gen.
means that I am actually seeing the second current node with the first being
at the bottom of that transformer?
Pumpin' the kW (into his 30year old valve scope)
Nick Field