Editor's Note: Here's another take on the transformerless AC line power supply, which finds use in some well-insulated, low-power devices. Our technical reviewer pointed out that C ac should be an ...

This is the simple version of a white LED lamp that can be directly powered from mains. It can give ample light even for reading purpose. Capacitor Cx along with diodes D1 through D4 forms the AC step ...

目前市场上关于AC LED（交流 LED）技术的讨论和产品开发渐有愈来愈热之势。韩国的LED大厂首尔半导体很早就开始从事AC LED的研发和推广工作。随着近两年LED照明用的再次大热，众多台湾厂商也已经在该领域发力，为AC LED再添一把火。 目前市场上关于AC LED（交流 ...

True to the history of other types of semiconductor products, LEDs offer better performance at a lower cost with every passing year. So much so, in fact, that the other elements of a conventional LED ...

High power LED lighting is harder than it looks. Power, dimming, control, and communication collide in one design.