[TCML] Ferrite Beads, Terry Filters, NST protection

[Tim Meehan]

As I understand it, the Terry filter's purpose is to protect the NST from HV
spikes.  I was wondering if putting some small ferrite beads in series with
the high-wattage resistors would help lower the RF on the NST side of the
filter?  I have some small beads (1/2 inch long, 1/8 inch diameter, with the
wire woven through the core of the ferrite about four times).

My parts are still in the mail, I figured that I would build it and try it
out.  I have looked a bit for ways to hook up to the signal on the high
voltage without turning my o-scope into a smoking cinder.  I gather that the
current transformer is the accepted way to do that?  I also have a BNC spark
gap (lightning arrestor) that I was going to put in series with the scope
too ...