led glowing based on comparator

Discussion in 'Homework Help' started by namitakrishnan94, Nov 8, 2013.

  1. namitakrishnan94

    Thread Starter New Member

    Nov 8, 2013
    1
    0
    can u pls tell me what is wrong with this ckt? even on changing the potentiometer resistor value, no change in the output led..:confused: proj.jpg
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,127
    3,048
    Calculate the voltages on both pins of the op-amp as a function of the potentiometer setting. Are you concerned about D3 or D4?
     
  3. antonv

    Member

    Nov 27, 2012
    149
    27
    Where did you get the circuit? There are some mistakes in it.
     
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