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   sci.electronics.basics      Elementary questions about electronics      72,318 messages   

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   Message 71,945 of 72,318   
   Bret Cahill to All   
   Re: Rope Light Circuit   
   02 Jan 21 08:10:45   
   
   From: bretcahill@aol.com   
      
   The 220 v EU in-cord power supply does the same thing as the 110 v U. S.  Only   
   the plug to the wall socket is different.  If you jumper a 220 PS to a 110   
   outlet you get almost the same DC and AC outputs as a 110 power supply plugged   
   into 110.   
      
   The string or rope parts must be designed around the 2 different voltages. The   
   220v and 110 v rope parts look alike and have mechanically interchangeable   
   internal plugs to the power supply but they require different voltages to   
   operate as intended.   
      
   If you plug a 220 rope into a 110 power supply (or 220 power supply spliced   
   onto as U.S. plug) and plug that into 110 you'll only get maybe 8% of the   
   lumens as if you plugged it into 220.  This appears as about a third of the   
   brightness to the yuman eye    
   but it may last longer.   
      
   If you plug the 110v rope and PS into 220v it'll probably be really bright for   
   a few seconds before it burns out.   
      
   About 2/3 eds of the 110 rope LEDs, constantly on, burned out in 6 months on   
   110 so for a night light it maybe better to buy the cheaper EU rope, ~ $2 /m   
   w/o plug, and plug into the old 110 PS.   
      
   Rope lights flash with the AC cycle so there's been no attempt to filter   
   smooth the DC if that is what is powering the lights.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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