Too many LED's for moon lighting???

zum14 · #1 03-08-2010, 06:08 AM

Quote:

Originally Posted by banditpowdercoat

Best way to find power of LED's is current draw. LED's don't measure like regular resistive devices do some times. Voltage/current=resistance

And a slight little modification of my Fan Speed controls would enable them to be used as a 12VDC 20W+ dimmer

really? Hmm... ive never ran into that problem yet at work but will definitly remember it next time im scratching my head over a problem. Thanks again. So now im just thinking here but doesnt that dimmer vary the voltage to the source? The reason i ask is that the power source im using i can easily switch to 9vdc or 7.5vdc down to 3.5vdc. So just thinking but if too bright, drop it down to 9V? What do ya think? or am i missing somthing again??? Thanks for the help.

banditpowdercoat · #2 03-08-2010, 01:29 PM

Ya for sure, you can use the other voltages. LED's dim nicely with lower voltages.

The reason LED's can be tricky to measure resistance is it's all dependent on the current driven through them. They are not fixed like a resistor.