Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!rochester!pt.cs.cmu.edu!andrew.cmu.edu!jk3k+
From: jk3k+@andrew.cmu.edu (Joe Keane)
Newsgroups: sci.electronics
Subject: high current
Message-ID: <4Ypvw2600WAHE0VzYL@andrew.cmu.edu>
Date: 3 Aug 89 03:41:54 GMT
Organization: Mathematics, Carnegie Mellon, Pittsburgh, PA
Lines: 6

Can someone help me solve this problem?  We have a line carrying a large DC
current (say 100 amperes), and we want a device that we can insert to put in or
take out a small amount of power (say 10 watts).  Assume any reasonable power
supply.  Now the load on the wire is highly inductive, so the first priority is
to keep the current flowing (or deal with a few megawatts...).  This is all DC,
so a transformer won't work.  How the heck do you do this?