I'm a fairly new student to Electronics and I have to build a variable voltage regulator for my college project. I've got a fairly good idea how to do it using an LM317 but I don't know how to get the LM317 to go below its reference voltage of 1.2v. There is some info on the National Semiconductors datasheet, but when I modelled it on Multisim I couldn't get it to work very effectively. Any thoughts out there?