Richard Hamilton Posted December 1, 2008 Share Posted December 1, 2008 Harbs wrote: Thanks for your reply.I am using 50 count LED. Single string in each channel. (mega tree).Any Idea what size resistor I need.I have 2 strings of the alleged CDI problem LEDS in my complete setupof 120 channels. The remainder are last years LED's which worked great in 2007.I now noticed nearly all fades are herky jerky.If I am using the 2 strings of the CDI LEDs will they affect the other lights on other controllers.HarbsHarbs, your LEDs do NOT determine the size of the resistor. It makes no difference what LEDs you use, the resistor is independent of that.I use a 33K Ohm resistor. Some other people use higher values up to 47K. The reason that this range is optimal is that if you go lower than 33K, then you will need a resistor that can dissipate more than 1/2 Watt of heat. If you go higher than about 40K or 50K then you may be putting so little load on the channel triac that it won't see the resistor load and won't solve the flicker problem. The idea of the resistor is to put a small constant load on the triacs so they will ramp the output voltage properly.I doubt that you will see any LED of one brand to interfere with another. Link to comment Share on other sites More sharing options...
Richard Hamilton Posted December 1, 2008 Share Posted December 1, 2008 Harbs wrote: OK MY BAD!! I checked and it was 33 OHM.I will try 33K OHMs if Radio Shack has them.Thanks,Harbsuh huh, thought so ;-)Thanks for the update. Link to comment Share on other sites More sharing options...
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