XPost: alt.home.repair, uk.d-i-y   
   From: Gothberg"@internet.co.is   
      
   Do switch mode power supplies flicker in time with mains?  Specifically LED   
   power supplies in commercially available domestic lamps.  By in time, I don't   
   mean at the same 50/60Hz, but anchored to it.  I.e. if you have several such   
   lamps each with their    
   own built in supply, will they all flicker in time, using the mains frequency   
   to keep them in time, or will they be random, making the room overall not   
   flicker due to them all being random?  And is there any way I can test this?    
   I tried taking photos of    
   them, but my camera only goes as fast as 1/2000th of a second, which shows all   
   the lights at the same brightness each time, I suspect the flicker is above   
   2000Hz.   
      
   --- SoupGate-Win32 v1.05   
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