Unexpected success in signal integrity.
I have/had a problem that, when my computer is on, it's interference drowns out the tv signal.
(I don't have, and can't install ground, I only have phase and neutral.)
I tried to put a ferite on the hdmi cable, but it didn't have an effect.
(Assuming that hdmi cable is shielded.)
(When the pc is off , tv works normally)
So I tried to wind up a wire around the hdmi cable and connect it to the oscilloscope, in
an attempt to see the interference from pc.
Surprisingly, tv started to work and didn't drop out.
So how long and how many windings should my wire be; also should I put a resistor accross a
this coil, to dissipate the interference signal energy, and what should be the resistance?
I assume that the interference is mostly from smps, so 40-150kHz.
Many thanks.
PS Sorry for the spelling errors , spellcheck doesn't seem to work
