>The transformer sounds too simple to be true (or?). The leakage would =
easily be >under control, and, should the in/output circuitry accept it, =
the ground wire not >necessary (I doubt that "just" the transformer =
would be sufficinet for this).=20

just make sure the transformer meets medical isolation requirements =
otherwise you will "smoke" your patient with ground leakage =
currents!!!!!!!!!!!!!!!!!!!!!

This is a one really serious reason why medical electronic equipment is =
so expensive.

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