[Premium-Rx] Technology for "quiet" dimmers

[WJ]

I think quiet dimmers are just matter of economics.  Electronic Theater 
Controls here in Madison has been quietly snapping up companies with 
patents on low EMI dimming technology for AC powered lights.  They were 
developing their own design up until one competitor put a design on the 
market.  So they bought the competitor.  My inside contact at ETC just 
transferred to a new job so I can't simply call up and say, how does it work.

In any event, the technology clearly exists.  You'll just never see it in a 
blister pack at Menards because of the economics.

Has anyone tested dimmers to see which of the current ones are 
quietest?  Are there any EC certified models for the European market?  The 
EC seems to care about EMI.  In the USA, EMI compatibility for consumer 
gear is probably viewed akin to all those other anti-business schemes 
environmentalists foist on the unsuspecting public, like the crazy, 
mindless opposition to internet over powerlines.

Terry O'


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