Best Peter!, " >I don't have one off of my head, because I normally buy off the shelf = or >from catalogs. But, by looking at the ethernet card I have in my hands >now, I can see a large DIP transformer hybrid directly connected to the = RJ >plug. So practically ALL ethernet cards have a transformer coupled = output. " This is very valuable information. Thank you. I am now even further convinced that "nearly only" the transformer will = do. I'll investigate further, taking all your comments with me further = down this road. Thanks again (I'll let you know the result - if you wish). Sven in Sweden -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.