> your bench power supply has this thing called a transformer that isolates
it
> from the main power input!

Unless its a "plain old" linear supply, it more likely full wave rectifies
the AC to make DC, then chops it thru a transformer at much higher than
60Hz.


********************************************************************
Olin Lathrop, embedded systems consultant in Littleton Massachusetts
(978) 742-9014, olin@embedinc.com, http://www.embedinc.com

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