One possibility is to look at what kind of VOM you are using to measure, if it is a modern low impedance electronic type, most are only accurate on the AC range with a true rms voltage. And can give all sorts of odd readings if used otherwise. If you have an older moving coil meter that is around 1000 ohms/volt it will probabally give a very different reading. The other thing that alot of users of Hi Imp meters is reading due to leakage such as through a solid state relay that is in the OFF condition showing like it is conducting due to a full voltage indication. Also put a fairly high load on the output of the PS and see if that makes a difference.
Al
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.