voltage to current conversion

Discussion in 'Homework Help' started by Lahari, Sep 16, 2011.

  1. Lahari

    Thread Starter New Member

    May 30, 2011
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    Hi,

    I have a sensor which gives voltage output in 0-10v range. But I have no idea about its current range. I have a Data acquisition card which can take input only in 4-20mA current range. How do I convert the sensor output to this DAQ card input range?? How will be the connection? please help me by stating the diagram.
     
  2. t_n_k

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    Mar 6, 2009
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  3. Jony130

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    Feb 17, 2009
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  4. t_n_k

    AAC Fanatic!

    Mar 6, 2009
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    It "works" for the case of 0-5V in giving 4-20mA out. There is a minor calibration error. It would be a somewhat more accurate conversion if the 390k were 400k instead.
     
  5. t_n_k

    AAC Fanatic!

    Mar 6, 2009
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    The attached schematic will provide 4-20mA output with 0-10V input.

    Power supply must be 15V regulated.
     
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