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 ...

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 ...

[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 ...