In article ,
John Smith I wrote:

Telamon wrote:
...

In your previous post:
---------------------------------------------------------------------
"I usually don't joke about the subject. The transformer is really no
different than the opto-isolator for DC isolation. One couples primary
and secondary circuits magnetically and the other with photons.

Either one will not be an effective block unless they are designed to
prevent passing common mode RF noise. It takes very little in stray
capacitance or mutual inductance to go around the opto-isolator."

---------------------------------------------------------------------

See the part, "The transformer is really no
different than the opto-isolator for DC isolation. One couples primary
and secondary circuits magnetically and the other with photons."

Why in the hell would we even concern ourselves with dc isolation, it is
rf which is causing the problem ...

Now, see the part, "Either one will not be an effective block unless
they are designed to prevent passing common mode RF noise."

There would be NO coupling, other than a light beam--and I asked you,
are you claiming the rf is traversing the light beam? (and, if so, you
will notice that I implied ONLY AN idiot would site that as being a
problem in this case.)

I can't help you.

Plonk

--
Telamon
Ventura, California