Been having an argument with one of my friends... and he says you cannot connect an AC walwart which all walwarts do conduct to DC current to a DC-DC converter which can regulate upto the walwart Volts and down to what ever the converter is.
Ex: http://tinyurl.com/pfhhk2c
Take that Step Down Converter, Attatch it to a Walwart Output, 12V 500ma. Now from my electronic experiences, walwarts, are all DC output, from the AC outlet, since the AC is 110-240v depending on where you are in the world, the walwart itself steps down the AC to (insert voltage here) and changes it into DC voltage(or vice versa changes thens teps down) for household items such as charging items, and for tvs, dvds, blue ray etc (some have internal ones I know not always walwarts)... you get the idea. Now If i take the walwart of 12v, and hook it to the above converter, I should get a max (approx) 12v, and at the least what 1.5v at the least give or take a little bit. Is this correct or is this not? I live in the USA, if this also helps.
From what I also know AC handles alot more current than DC, 110v+, I have never heard of an AC walwart putting out AC power at 12v doesnt make sense, the Walwart would fry instantly if it was getting that much power and it getting backed up via the walwart cause it doesnt have anywhere to go cept pound the circuitry. Doesnt make sense either. As for DC it is for batteries and such not high currents, but still enough to give you a jolt, but DC is made for smaller things.