For his thesis project, [Haris Andrianakis] developed his own power line communication ... the 50 or 60 Hz of the AC power itself. Using both active and passive filters, the signal can be ...
A PIC controls a triac connected across the supply by monitoring power line zero-crossing. The PIC controls dimming by delaying the time the triac fires, which trims the peaks off of the AC waveform.
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