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Hiii everyone

  1. Feb 14, 2015 #1
    New to physics forum
     
  2. jcsd
  3. Feb 14, 2015 #2
    Welcome to PF!
     
  4. Feb 14, 2015 #3
    I need help for some calculation involving phototransistor circuit. Can you help me?
     
  5. Feb 14, 2015 #4
    Please post your question in the appropriate forum
     
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