Swichmode voltage regulators in series
March 30, 2011
I have two of these adjustable voltage regulators ( http://www.dimensionengineering.com/DE-SWADJ3.htm ) and two 12 volt battery packs (from electric drills, their maximum voltage is actually around 14 volts).
I want to power a computer that needs 19 volts. I am not sure how much power the computer uses but I think it is less than 50 watts.
My plan is to regulate each 12 volt battery down to 9.5 volts and then connect the outputs of the regulators in series for a total of 19 volts.
Do you forsee any problems with this setup, could the switching of one regulator interfere with the other? I am asking for your opinion first because these thinghies are somewhat expensive and they blow up very very quickly if mishandled (one of them released its blue smoke instantly when I plugged it in backwards).