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circuit design circuit design:



  DF-1 circuit board (fixed)  
   DF-1 manual pg 26 schematic fixed  
   DF-1 schematic (annotated) zoom  
   DF-1 schematic (annotated)  
   DF-1 schematic  
   filter in mode 1  
  DF-1 circuit board (fixed)     DF-1 manual pg 26 schematic fixed     DF-1 schematic (annotated) zoom     DF-1 schematic (annotated)     DF-1 schematic     filter in mode 1  


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