> > > As far as I know this items have the same function as paralled transistors > - > so if you see a 2 emitter transistor in real on the substrate these are 2 > transistors, where collector and base electrodes are switched in parallel > and 2 emitters are on the substrate. Yes, but the point is the good matching of current in each split leg, which you can't get in discrete transistors. I've done this with discretes, and you can build the circuits, but you have to match the betas of the transistors by hand, and even then it's not all that wonderful.. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist