Testing the attenuation of a line filter would be challenging, especially
since there is no consensus for what it is that the filter is supposed to
do. Filter the resonant frequency of the coil (too low, not likely)?
Filter VHF transients from the spark gap? How do you measure that? Filter
high voltage spikes? Not the job of an EMI filter! But considering that
the price for a new filter on the surplus market is just a couple of bucks,
just get a new one! I used such a filter because they're dirt cheap, but I
harbor no illusions that it makes a measurable difference in anything.
Gary Lau
MA, USA
On Wed, Feb 27, 2019 at 1:44 PM Daniel Kunkel <dankunkel@xxxxxxxxx> wrote:
> Hello list,
>
> I recently exceeded the 20 amps of a commercial line filter. I don't think
> I let the magic smoke out, but is there a way to verify it is still
> working? I am thinking of just using a signal generator and oscilloscope to
> see how much it is attenuating.
>
> Thanks,
> ~Dan
> Kansas City area
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