I have a MagnaTek 6400A Model 6409 Converter http://www.popupportal.com/media/img_6162.9520/ It works fine, but I think that when it's on shore power, although I can run the LED lights, the 12V output is not clean 12V DC. I don't have an oscilloscope, but when I put a meter on it, the reading jumps around a little, and so I suspect that it's lumpy DC. I'd like to be able to run certain electronics equipment off the 12V, but I need it to be clean regulated 12V. For example, I plugged in an inverter (DC to AC) to the 12V cigarette lighter style adapter and it errored out and would not work. Hopefully my explanation is sufficient to describe what I'm trying to do and someone can recommend a simple solution.