I actualy got a few samples of an "Isolation Amp" from Texes (ISO122JP, 1500V isolation). I thought of building an isolated probe for the HP O-scope. We'll see... Jan-Erik. Spehro Pefhany wrote : > ...carefully insulate the high voltage > end of things you'll run a much lower chance (but still non-zero) of > destroying your development system and computer. -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu