1. The problem statement, all variables and given/known data I am to build a linear power supply in four stages. However, at stage two, i have to add a bridge rectifier to the ouput of my transformer. My lecturer at university says i should get a graph that is a sine wave, with the negative values reflected into the positive x axis (Volatage). I was wondering were am i going wrong? 2. The attempt at a solution http://img399.imageshack.us/img399/1367/ltspice1gm7.jpg Any help would be greatly appreciated. Thanks.