> I am confused by this. Aren't PC power supplies transformerless?
> Why aren't they dangerous?

because they do have a transformer between the High Voltage section and
the outputs :) The feedback for the voltage regulator is also
insulated, either with a transformer or with an optocoupler.

        Luigi
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Luigi Rizzo                  |  Dip. di Ingegneria dell'Informazione
email: luigi@iet.unipi.it    |  Universita' di Pisa
tel: +39-50-568533           |  via Diotisalvi 2, 56126 PISA (Italy)
fax: +39-50-568522           |  http://www.iet.unipi.it/~luigi/
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