[R-390] re: R-390] Isolation transformer question

[W. Li]

Interesting discussion re isloation transformers. I
think one thing to not forget, is to bypass/remove the
vintage R390 line filter and replace it with a modern
IEC unit.

This answers your query re line cords: use a spare
*computer* grade cord. We all have many unused ones
lying around the shack. Some of them are heavy duty
with 16G (?) wire. All of them have the required third
wire ground.

There was a real good discussion re AC grounds a while
back that bears re-reading.

Agree with you re the Variac/isolation transformer
box. Mine is deluxe homebrew with surplus mil-grade AC
amps and AC volt analog meters.

Thanks

W. Li


       
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