Lebelight's Xiaguang Series LEDs which includes white, purple, blue, yellow, and red lighting products ranging from 1 to 100 watts all with a life span of 60,000 hours have successfully passed the ...

This circuit is designed to drive the 1W LEDs that are now commonly available. Their non-linear voltage to current relationship and variation in forward voltage with temperature necessitates the use ...

A good light, but there are cheaper plastic-bodied options with the same output This front light from LifeLine has a single high-power LED with an integrated lens powered by four AAA batteries. It has ...

[Amen] obtained a microscope whose light source was an incandescent bulb, but the light from it seemed awfully dim even at its brightest setting. Rather than hunt down a replacement, he decided to ...