Op amp current source

Discussion in 'General Electronics Chat' started by gary1wang, Sep 20, 2011.

  1. gary1wang

    Thread Starter Member

    Sep 18, 2008
    23
    0
    I am stuck on how to make current source only use several op amps, i am not allowed to use the other component.


    Thanks
     
  2. colinb

    Active Member

    Jun 15, 2011
    351
    35
    Can you be more specific on your requirements? Exactly what components can you use? Is it a school assignment?

    Hopefully you can at least use passives like resistors...
     
  3. #12

    Expert

    Nov 30, 2010
    16,248
    6,745
    There are several ways to do this depending on whether you want to source, sink, or use the current in the feedback loop. More information is required. What voltage is available, how much current, where the load is.
     
  4. gary1wang

    Thread Starter Member

    Sep 18, 2008
    23
    0
    It is for the project i am working on. I need to use PSOC to make current source. and it only have function of op amps that i can use no resistor and no transistor.
     
  5. gary1wang

    Thread Starter Member

    Sep 18, 2008
    23
    0
    there are no resistors and transistors function on the PSOC
     
  6. gary1wang

    Thread Starter Member

    Sep 18, 2008
    23
    0
    i have make a current source that can source less 1 mili amp current, and use that to drive a transistor.
     
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