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On 2/6/18 6:00 AM, Daniel Kunkel wrote:
Thank you for the response Gary. Glad I asked, the neutral vs hot side
escaped me for some reason!
While on the subject of line filters. I do have a 20a commercial line
filter that I am planning on using. I find it odd that they display the
schematic on line filters, but do NOT show the frequency cut off. I too
suspect that the commercial filters do nothing in the lower RF spectrum. I
will see if I can work out the math. Mine has a few capacitors and coils.
most common line filters are attenuating higher frequencies (>10MHz), so
as to meet FCC Part 15 requirements.
Here's one from Corcom a 20VW1 for $70, out of the Mouser catalog
https://www.mouser.com/ds/2/418/NG_DS_20VW1_7-689098.pdf
Attenuation is 65 dB at 5 MHz, but starts to roll off below 500kHz.
Pretty good differential mode attenuation from 500k to 10 MHz
I'm not sure what you'd be looking for in a TC - common mode or
differential - probably common mode (i.e. HF coupling back across the
transformer, treating the whole primary circuit as a single conductor)