XPost: sci.electronics.repair   
   From: spam@spam.com   
      
   On Mon, 6 May 2013 07:24:26 -0700, "William Sommerwerck"   
    wrote:   
      
   >I was going to get involved in this conversation, but have decided not to. All   
   >I know is that the schematics don't make much sense (primarily because there   
   >doesn't seem to be "proper" isolation between the bal and the un.   
      
   Isolation is not implied in the function. As long as the signal on the   
   output is of equal amplitude and opposite phase on the two ports, the   
   job is done. This circuit satisfies that perfectly.   
      
   d   
      
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