XPost: alt.engineering.electrical, sci.electronics.design, sci.e   
   ectronics.repair   
   From: spam@spam.com   
      
   On Wed, 9 Nov 2011 09:07:15 -0800, DaveC  wrote:   
      
   >> Your drawing is wrong; signal goes to the inverting (-) inputs and the   
   >> Vcc/2 reference goes to the non-inverting (+) inputs.   
   >> JF   
   >   
   >Thanks guys. Fixed:   
   >   
   >   
   >   
   >All else looks good?   
   >   
   >Are cap values reasonable? I added C8 & C9 out of habit of seeing in other   
   >designs. Values for these?   
   >   
   >Thanks.   
      
   What does U4 do?   
      
   d   
      
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