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   alt.electronics      Electronics design, repair, worship, etc      7,706 messages   

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   Message 7,114 of 7,706   
   "William Gothberg" <"William to Jon Fairbairn   
   Re: Do switch mode power supplies flicke   
   20 Dec 18 13:00:01   
   
   XPost: uk.d-i-y, alt.home.repair   
   From: Gothberg"@internet.co.is   
      
   On Thu, 20 Dec 2018 09:36:02 -0000, Jon Fairbairn    
   wrote:   
      
   > "William Gothberg" <"William Gothberg"@internet.co.is> writes:   
   >> Agreed. All I can detect (with my digital camera) is that   
   >> one brand of LED light I have flickers about 5 times less   
   >> (not sure if it's smother or faster) than the others.   
   >   
   > Try a longer exposure and move the light rapidly relative to the   
   > camera.   
      
   I wonder, if I fed the lamps with mains voltage DC, simply a bridge rectifier   
   and a huge capacitor, they'd reduce their flicker.  The cheap shit LED lamp I   
   have that actually flashes at 100Hz would most likely get much brighter and   
   burn out, so I'd have    
   to adjust that, but the others which only flicker 8% would just get 4%   
   brighter.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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