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Thread: theory question on phase control dimming
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face BY : Michael C. Reid email (remove spam text)



Here is a question on phase control light dimming.  We use PIC's in a
lighting control system.  I have been told that dimmer manufacturers warn
against sharing neutrals in the electrical wiring if a dimmer is connected
on either phase.  Something about phase shifting of the sine wave.  My
understanding is that the sine wave is chopped and shut off to do the
dimming.  Can dimmers be used with a shared neutral, where each side is 180
degrees out of phase?

Also, does anyone out there have any cool PIC routines for dimming?

Mike





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