I have another issue with LEDs, I am designing an indoor device that use solar panel for recharge, and if I put my current solar panel (IXYS panel) under a LED vs under an halogen light, which are both similar in light intensity "to the eyes", I have like 100 times less energy on my panel under the LED.
I just discovered that a few days ago because I was using a LED maglight to test my panel and realized I had incredibly small power output with it. Now I am building a small circuit to measure and datalog the power output of different solar panels under different type of artificial lights (vs having to use the multimeter + oscilloscope which is not very portal outside my labs).
If you designed solar powered device for indoor use and have heard of this issue, I'm very interested.
I just discovered that a few days ago because I was using a LED maglight to test my panel and realized I had incredibly small power output with it. Now I am building a small circuit to measure and datalog the power output of different solar panels under different type of artificial lights (vs having to use the multimeter + oscilloscope which is not very portal outside my labs).
If you designed solar powered device for indoor use and have heard of this issue, I'm very interested.