XPost: sci.electronics.components, sci.electronics.design   
   From: gnuarm@gmail.com   
      
   On 4/2/2015 11:58 PM, DaveC wrote:   
   > I have a FET and a load and a micro outputting PWM.   
   >   
   >   
   > I want to convert the PWM to DC (low-pass filtered?) which will control the   
   > current through the FET.   
   >   
   > I also want to be able to calibrate the DC voltage such that for any given   
   > PWM duty-cycle I want to be able to adjust the resulting DC voltage plus or   
   > minus a yet-to-be-determined percentage. This will probably need to be done   
   > only once so a trim pot will be fine.   
      
   Why can't the trim be done in software?  Or since it is in a feedback   
   loop, is a trim even needed?   
      
   --   
      
   Rick   
      
   --- SoupGate-Win32 v1.05   
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