[R-390] Possible source for isolation transformers?

Steve Hobensack stevehobensack at hotmail.com
Wed Jul 4 08:51:08 EDT 2007


Transformers for this application are almost always autotransformers. They 
are smaller for a given wattage because there is only one winding (with 
tap), and the common part of the winding can be downsized. They will not 
function for isolation. They can be used either for step-up or step-down.
...Steve...N8YE

Knowing the leaky filters won't run on GFI circuits and are probably not
all that safe when used on non-GFI or non-isloated circuits, I think
some folks may be looking for isolation transformers.  While searching
for voltage converters for overseas travel, I found these:

http://www.eastwestintl.com/proddetail.asp?pid=2625

They state that they are transformers, not just converters, and that
they can be configured to run either 110-220 or 220-110.  I wonder if
these could also be wired for 120-120 and used as an isolation
transformer.  If not, if someone has 220V in the shop, it might be a
good way to power an R390[A].

If you back up a page, they have a variety of transformers ranging from
100W on up.

Just thought I'd pass this along.

Barry - N4BUQ

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