https://www.vtomb.com/video/T-5fBc5MRjk/how-to-make-bridge-rectifier-12-%E0%A4%B5-%E0%A4%B2-%E0%A4%9F-dc-%E0%A4%AC-%E0%A4%B0-%E0%A4%9C-rectifier-%E0%A4%95-%E0%A4%B8-%E0%A4%AC%E0%A4%A8-%E0%A4%8F-video