The skin effect of LED basics

When you do LED testing , you should find that when you use a high-frequency current driver, it often appears black, which eventually leads to a dead light. Specifically, the colloid around the gold wire is carbonized and burnt black due to continuous high temperature. This is becaus

PC Reliability Ranking: Asus Summit

US service company Rescuecom recently announced the reliability rankings of major PC makers in the second quarter of 2010. ASUS squeezed Lenovo to the top of the list, and Apple rose to second place. This ranking is traced by Rescuecom on the basis of technical support for different PC ma