TESS, a Taiwanese manufacturing company, recently introduced a 7W LED bulb that, at 560 lumens, can serve as a replacement for a typical 500-lumen, 40W incandescent bulb (Figure 1). TESS has received ...

Almost two years ago I did my first LED teardown on a 7W LED bulb from Taiwanese manufacturer TESS. They sent me two bulbs, one in warm white and one cool. I tore down the cool white, and afterwards ...