current to voltage converter using photodiode

Discussion in 'Homework Help' started by mousedeer49, Nov 10, 2014.

  1. mousedeer49

    Thread Starter New Member

    Nov 10, 2014
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    hye everyone,im new here....now im stucked with thi smedical Instrument homework where my lecturer want me to construct a current to voltage converter circuit using OP07CP and photodiode,,but in Multisim software, my lecturer said i can't directly take the photodiode to the circuit because i dont have any light source, so he suggest to use opto-transistor whether phototransistor or optocoupler..but how can i draw it in Multisim???? help me find this out,,, :(
     
  2. bertus

    Administrator

    Apr 5, 2008
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  3. mousedeer49

    Thread Starter New Member

    Nov 10, 2014
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    actually i have go through this pdf before but it doesn't help me a lot,,there is something like this my lecturer said.
     
  4. joeyd999

    AAC Fanatic!

    Jun 6, 2011
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    Why not just replace the photodiode with an adjustable current source and a parallel (equivalent) cap?
     
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  5. mousedeer49

    Thread Starter New Member

    Nov 10, 2014
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    hye @joeyd999 can you tell me futher about this?
    where can i take those component in multisim software?
     
  6. joeyd999

    AAC Fanatic!

    Jun 6, 2011
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    Sorry, I don't use multisim. But others here do. Someone will probably be around shortly.
     
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  7. mousedeer49

    Thread Starter New Member

    Nov 10, 2014
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    @joeyd999 thank you so much, hope there will be.;)
     
  8. crutschow

    Expert

    Mar 14, 2008
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    A current source is a basic signal source component in Spice (Multisim). It will be found in the same location in the software tab as a voltage source.
     
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