I was tried, but really, there wasn't any advantage in $$$ results.
When the current tends to grow, the circuit (my circuits) seem to get too 'sensitive' to the external noises.
So much I do to isolate it, so bad seems to use a capacitive source.
The other way I get it workink was: Two capacitive sources, one for PIC, the other for devices (triac's, rele's). 

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De:             Mark A. Corio[SMTP:Mcorio@AOL.COM]
Enviado:        martes 10 de diciembre de 1996 20:45
Para:           Multiple recipients of list PICLIST
Asunto:         Capacitive isolated power

Hi again,
One of my current PIC projects includes high voltage (+/-100V) supplies
derived from 110VAC mains.  Recently there was some discussion here about
isolation vs non-isolation (I am 100% in favor of isolation for this
application as it can not be totally insulated).  There was discussion about
using capacitive isolation instead of an isolation transformer.  Has anyone
done something like this for higher currents (>1 amp)??  I would appreciate
any pointers or success/failure stories.  Thanks.

Mark A. Corio
Rochester MicroSystems, Inc.
200 Buell Road, Suite 9
Rochester, NY  14624
Tel:  (716) 328-5850 --- Fax:  (716) 328-1144
http://www.frontiernet.net/~rmi/

***** Designing Electronics For Research & Industry *****


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