Roland, let's say (for instance) that you had a 220V device that you plugged directly into a Euro 220V outlet.
Then let's say you had a comparable 110V device that you plugged into a 110V American outlet.
What would be the difference in isolation between the two? Now let's say you were to use an autotransformer to use the 110V device on the 220V outlet, and (after disconnecting, of course) used the autotransformer to use the 220V device on the 110V outlet?
Assuming no exposed mains wiring, what would be the isolation differences between those four cases?
73
Jim N6OTQ
---In Homebrew_PCBs@yahoogroups.com, <rolohar@...> wrote :
Not an "autotransformer"
You probably want to stay away from an "autotransformer" in this situation because of line isolation factors.