While they do have a higher upfront cost, led lights are more efficient and last far longer than incandescent, fluorescent, ...

Create a bold, modern LED clock with 3D printing and vibrant lighting. Transform your space with this unique DIY timepiece!

Abstract: Although a single-stage off-line power light-emitting diode (LED) driver can achieve low cost and high efficiency, the notorious double-line-frequency flicker issue with a single-stage LED ...