[R-390] FL-101 replacement Corcom IEC power Filters

[Bill Hawkins]

An isolation transformer isolates any stray current (except to the
primary (which does not happen in a good isolation transformer)) that
may trickle out of the R-390, so that the GFCI will not trip (unless the
transformer is bad).

Indeed, as long as no wire from the transformer secondary is grounded,
you cannot get a shock from the R-390 to Earth ground that is due to the
isolated power circuit. You can still learn a nasty lesson from B+ to
chassis ground, however.

It is still a good idea to ground the frame of the R-390 to Earth so the
antenna current can go somewhere, unless you are using a balanced
antenna.

Hope there's enough disclaimers in there.

Bill Hawkins


-----Original Message-----
From: Mike Carroll
Sent: Friday, May 16, 2014 4:55 PM

Hello list:
I agree that this topic has been adequately addressed (beaten to death)
but I'm in need of an education re: the alternate; isolation 
transformers.   If getting zapped is the result of a fault within the 
device,  what does an iso transformer do to address that issue? I'm
assuming that the transformer is installed at the mains, i.e., before
the plug.
Thanks in advance
Mike