On Sun, 23 Sep 2012 21:48:11 +1000, Franc Zabkar
put finger to keyboard and composed:

IMO you should not be experimenting with R1 or R2. This potential
divider senses the line voltage. If you make the AVS10 believe that
the line voltage is 110VAC when it is fact 220VAC, then you will have
660VDC across the two capacitors rather than 330VDC.

If your application is 220VAC only, then you could disconnect the
AVS10 section completely. Just remove the triac, or cut the link to
the junction of the bulk capacitors.

- Franc Zabkar
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