This schematic image goes with the file AUDBIN.HTM on KeelyNet.


                              220K
                   _____/\/\/\______
                   |                |
         BPW34     |   |\           |  "I to V" Photodiode Front End
  (+)______|/|_____|___|-  \        |
           |\|         |     \______|____
                     __|+  /  TL071
                    |  |/
     (+)___/\/\/\___|___/\/\/\_
            47K         47K    |
                               V