. . . They have brushes, but if they are DC, it sure is hard to figure out where the AC gt; DC transformer would be.
They have both ac and dc dremel tools..some have cords on them and some are totally battery operated....they do not have a transformer on them..they are either ac or dc..but none or ac and dc also..
Battery powered would be dc. Corded would be ac
All Dremel hand tools use AC motors. You can tell as there is no AC/DC adapter over the cable or enough room to fit one into the units' body.
Other answers talk about Dremels. I just wanted to say some things you must not know based on your questions. Brushes have nothing to do with AC or DC. DC motors are brush or brushless, and AC motors are brush or brushless (induction). You also don't need a transformer to convert AC to DC. Common switching power supplies have no transformer, which allow them to work on both 50 and 60 Hz.
