Mulling over...things.  Years ago I used an AT&T chip
for a non-isolated power supply...needed 5VDC for a
PIC in the smallest package so the chip, resistor and
a few caps and it was done.

Moving forward in life...new project, but more likely
to eventually end up in the hands of consumers, so
will probably have UL testing.  

Thus I need a small power supply, not alot of room so
trying to get away from a transformer.  Wall wart is
not an option.  Power Integrations has some nice chips
to do this, but if this product, encased in plastic,
with all the HV stuff back 'behind' a faceplace...isnt
the 5VDC actually tied to the AC hot?  So perhaps the
best way to ensure safety is use a transformer and isolate.


		
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