Salvaging Electronic Parts: Power Supply

Got an old computer? The power supply (see warning below) can contain a lot of useful parts for electronic projects and experimentation! WARNING: Never work on electronics that are connected to mains. Power supplies can hold dangerous / fatal power long after they are disconnected. Always use proper safety precautions when soldering / desoldering. Dispose of electronic waste properly. If you don't know about any of the above learn first or don't do it.