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Glowing LED Warning Lights, Too Dark Now

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MikeEasley(at)aol.com
Guest

Posted: Sun Oct 01, 2006 5:06 am Post subject: Glowing LED Warning Lights, Too Dark Now

My LED voltage warning lights are now too dark to see in daylight after  adding the resistors in the drawing.

  

 Smaller resistors?

  

 Deal with the glow?

  

 Ideas?

  

 Thanks in advance,

  

 Mike Easley

 Lancair Super ES, 12V

  [quote][b]

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nuckollsr(at)cox.net
Guest

Posted: Sun Oct 01, 2006 10:40 am Post subject: Glowing LED Warning Lights, Too Dark Now

At 09:04 AM 10/1/2006 -0400, you wrote:



 	  Quote: 	
		  My LED voltage warning lights are now too dark to see in daylight after 

adding the resistors in the drawing.



Smaller resistors?



Deal with the glow?


	


     What kind of LED's are you using? Individual lamps

     or something buried in an assembly? Are they fitted with

     any kind of built-in resistor? I.e., designed already

     to run directly from 12 or 24v?



     Adding the pair of 220 ohm resistors as shown in



http://www.aeroelectric.com/Pictures/Schematics/LV_Led.jpg



     assumes that your LED is "barefoot", i.e. no additional

     resistances other than those shown in the schematic.



     If your led has any such series resistances, then eliminate

     the series 220 ohm resistor entirely and run only one

     220 ohm resistor in parallel with your resistor-led

     combination.



     Bob . . .



      ---------------------------------------------------------

      < What is so wonderful about scientific truth...is that >

      < the authority which determines whether there can be   >

      < debate or not does not reside in some fraternity of   >

      < scientists; nor is it divine. The authority rests     >

      < with experiment.                                      >

      <                            --Lawrence M. Krauss       >

      ---------------------------------------------------------

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