Tom DeVito 4.30.2012

Start: 11:30

Board Design Improvements:

  • Add a switch for turning the board on/off
  • Move input leads so that the mounting hole doesn’t intersect with one of them.  I don’t think this is the cause of the issue as the one that works well has this same issue.

Potential solutions to the feedback issue:

  • Send the input signals negative lead to group instead of to the negative on the pre-amp
  • Possible need for another voltage regulator on 12 volt side.
  • Need to rebuild board on a breadboard to experiment with possible solutions.
  • Check current on 5 volt branch to make sure its not going over 1 amp.
  • Isolate out pre-amp to see if the problem is with that circuitry.

End : 3:15

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