heh I should post my phase fired AC circuits. I actually make the electronics for these things. They're simple devices. The only trick is using the right AT leg on the triac for the input current. I think it has something do to with the topography of the device? All I really know is backwards they don't work. Alternating current has more polarity than most realize it does. More than I gave it credit for before messing with it. Autotransformers don't work hooked up backwards either. That's where I first discovered the phenomena for myself. Live and neutral are different beasts. But here's a schematic for the simplest dimmer http://i.imgur.com/GE3ZXqP.png and you tie the neutrals and run the live through the circuit. Here's what that looks like physically https://i.imgur.com/M7WENhG.jpg Not much to it.
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