RussellMc wrote: > This > >>> Full wave rectifier transformers draw DC on >>> each half of the secondary, > > And this > >> Only one half of the >> secondary conducts each half-cycle, > > seem to be different ways of saying the same thing, Clearly not. First, there is no such thing as a "full wave rectifier transformer". There is nothing special about a transformer because it happens to be used in a full wave rectifier circuit except that it needs at least a center tapped secondary. However, there are many other application= s for a center tapped secondary, and the existance of one doesn't make it a "full wave rectifier" transformer. Second, we were talking about load on the AC power line. Whether a transformer is used in a configuration so that DC runs thru parts of its secondary has nothing to do with that. It is neither a argument for or against whether drawing net DC from the power line is OK. In short, it was a meaningless comment making little sense and certainly having on bearing on the point in question. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .