They are the "heart" of every electronic device, from laptops to electric toothbrushes: printed circuit boards, also known as PCBs. These rigid boards are covered with copper traces and soldered ...

Multipattern serial lamps are now available at very low cost. These china make serial lamps circuit gives 8 pattern lighting like Combination, In Wave, Sequential, SLO-GLO, Chasing/Flashing, Slow-Fade ...

For quality control purposes, wafers, such as semiconductor or flat-panel display (FPD) chips, need to be examined under a microscope to verify that they meet specifications related to both circuit ...