Stillpoints ERS cloth for EMI/RFI

Thanks Geoffkait,the search is on for mu metal.

Found it ,same price as ERS.
Time to place an order for a few sheets.

Take care handling sheets of mu metal as edges are very sharp. I trim using those special shears that crimp the edges when you cut the sheets to help prevent cuts.

Thanks Geoffkait. you are a great contributor. However you mention "you recall from high school days" would only be wishful thinking on my part! Are you saying the magnetic field from the transformer contributes as much noise as EMI/RFI. Does wrapping with mu-metal cause any problems. I also have a ~ 75 pound Equitech 2Q transformer. They don't appear to have it enclosed in mu-metal Any idea why?

Ptss wrote,

"Are you saying the magnetic field from the transformer contributes as much noise as EMI/RFI?"

I'm saying it contributes more.

"Does wrapping with mu-metal cause any problems?"

Mu metal is conductive so one needs to be soemwhat careful. Usually the transformer is easily wrapped

"I also have a ~ 75 pound Equitech 2Q transformer. They don't appear to have it enclosed in mu-metal Any idea why?

My guess is either they don't know or don't care. I can't think of any manufacturers who enclose the transformer in mu metal. Go figure. Of course they don't do a lot of things, E.g., better fuses in, better power cords.