> This is a question.  *Without regard to cost*, is it reasonable to  
> rectify the AC mains and measure the RMS of the AC waveform and run a  
> high current peak PWM cycle that is proportional to the RMS of the AC  
> waveform ?
> cc
If you made do with measuring average volatage (which would probablly be 
a good enough approximation for this application, it doesn't have to 
respond to the dimmer in exactly the same way a filiment bulb would) it 
wouldn't be too difficult.

The hardest part would probablly be designing a power supply for the 
LEDs that was suitable for running off the dimmed supply without 
damaging either itself or the dimmer and allowed the dimmer to function 
normally but I can't imagine it would be too difficult.

You may also have issues with the dimmers minimum loading.
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