It may have something to do with the high levels of eucalyptus oil in the air or the summertime hole in the ozone layer overhead, but something has caused an outbreak of sine wave dimmer technology in Australia. Phase control has been our best approximation to an ideal dimmer for more than 30 years, though chopping chunks out of mains cycles is an inherently messy business. The ease of remote operation, relative robustness, and high efficiency of thyristor (SCR and Triac) dimmers have made ...

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