1. 
   single ended
   (hardware) An electrical connection where one wire carries the signal and another wire or shield is connected to electrical ground. This is in contrast to a differential connection where the second wire carries an inverted signal.
   Found op http://foldoc.org/single+ended
   
   
2. 
   Single ended
   A term often used instead of single quadrant, meaning a drive that is capable of a only one direction of rotation and motoring current only.
   Found op http://www.encyclo.co.uk/local/20823
   
   

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