Russell McMahon wrote: >> I don't remember who it was who suggested this before, but I liked the >> idea of using the brake FETs in the bridge and getting the brake effect >> "for free". Did you check out that circuit? > You may recall the discussion a few weeks ago where various in bridge > ideas were tried. My first design applied regulation to the bridge > proper. The ideal design would integrate bridge, voltage regulator and > brake. In many designs the need for a near zero quiescent current > makes life harder. Yes, and on second thought, the 3.5 V minimum supply voltage doesn't make the use of FETs as bridge switchers exactly easy. With the types of products I mostly work on, I rarely get to dive so deep into how to employ single transistors :) It's quite interesting to follow this development. Thanks for sharing -- and please keep the updates coming. (How's that for a model of open source development? In a sense, that's pretty much what is going on here...) Gerhard -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist