On Tue, Jan 31, 2012 at 6:08 PM, Jones Beene <jone...@pacbell.net> wrote: > Mine too, and now ... the real reason for this inquiry - why do you need > one?
You normally use an isolation transformer to avoid earthing the load. That way you avoid ground loops. Why they use it could be as you surmise; but, variacs are fairly rugged. Yes, there could be a lot of RF noise in the reactor. I'll ask them. T
