smitty77 Posted December 12, 2011 Share Posted December 12, 2011 I've done all I can think of on my new controllers and cannot get LEDs to fade at all, I installed the LOR-Curve01.ldc onto all the controllers which I thought was the lighting curve for LEDs, I also changed all the channels in the hardware utility to DimmingCurve 1 not sure of the name but I thought it was the one that pointed to the first curve file. Is there something Im doing wrong? Is LOR-Curve01 the LED custom curve? Link to comment Share on other sites More sharing options...
Jim Hans Posted December 12, 2011 Share Posted December 12, 2011 Sounds more like an LED issue than a controller issue as all the new gen 3 curves do is smooth out the fade. Try plugging a string on incan lights into the LED's. Do they now fade? If so search for the threads here for snubbers as this will help a lot. I use snubbers on all my circuits to smooth out the fading.Not all LED's fade. Where did you get them? Link to comment Share on other sites More sharing options...
smitty77 Posted December 12, 2011 Author Share Posted December 12, 2011 I've had to use a single c7 bulb plugged into the LEDs on the other displays I do but I thought the gen3s where suppose to not need snubbers, thought that was the purpose of the light curves and the built in ghost loads. Link to comment Share on other sites More sharing options...
Greg Young Posted December 13, 2011 Share Posted December 13, 2011 smitty77 wrote: I've had to use a single c7 bulb plugged into the LEDs on the other displays I do but I thought the gen3s where suppose to not need snubbers, thought that was the purpose of the light curves and the built in ghost loads.It is.If your LED strings are designed using capacitors (in addition to the usual diodes and resistors), they will not fade properly! (and in fact can be damaged by doing repetitive fades). Link to comment Share on other sites More sharing options...
crashdummyjr Posted December 14, 2011 Share Posted December 14, 2011 whats a snubber??? LED's are digital so they cant technically dim...... Link to comment Share on other sites More sharing options...
-klb- Posted December 14, 2011 Share Posted December 14, 2011 crashdummyjr wrote: whats a snubber??? LED's are digital so they cant technically dim......Please cite sources on that...I have 1,200 lbs of LED strings that are fading beautifully on Gen 2 CTB16PC controllers. Custom dimming curves would be nice to have, but not necessary.But failure to dim is unrelated to dimming curves or not. Link to comment Share on other sites More sharing options...
wmilkie Posted December 15, 2011 Share Posted December 15, 2011 Poor quality LED strings. Last year I bought some at Home Depot that I couldnt get to dim at all(Martha Stewart), but all my others dim beautifully. Link to comment Share on other sites More sharing options...
-klb- Posted December 15, 2011 Share Posted December 15, 2011 Increasingly, I think it may be a good idea to have a simple rotary dimmer in a junction box for testing how well given LED strings actually dim. If they don't work well with a cheap rotary dimmer, I wouldn't expect the to do any better with LOR. Link to comment Share on other sites More sharing options...
smitty77 Posted December 15, 2011 Author Share Posted December 15, 2011 Ive gotten these same LEDs to fade with a single C7 plugged into each channel with them but I guess I got the wrong impression with the G3 boxes having the ghost loads and dimming curves that I wouldnt need the C7s anymore. Link to comment Share on other sites More sharing options...
-klb- Posted December 15, 2011 Share Posted December 15, 2011 I think some strings need more linear phantom load added than others. I'm not sure how much the gen 3 controllers have built in, but a lot of people get by with less than a half watt per channel. A single C7 is a full 5 watts of load. The more capacitance there is in the load, the more phantom load is needed to drain it down every half cycle. Link to comment Share on other sites More sharing options...
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