Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Question regarding electronics

  1. Feb 15, 2005 #1
    I have my solution and mt doubt in the attachment that followed and I hope that somebody will help me figure out.Thanks for anybody that spend some time on this question.

    Attached Files:

  2. jcsd
  3. Feb 15, 2005 #2


    User Avatar
    Homework Helper

    This is sort of a trick question, because it's really very easy.

    Ask yourself : is there any feedback in this circuit ? Feedback is when the output is fed back in part to the input. Does it happen here ?

    What happens when there is no feedback in an opamp ? Hint : Comparator. Look this term up.

    Find the voltage at the negative input. Hint : Voltage divider. Is it different from that at the positive input ?

    What happens to the output ? Hint : Saturation.
  4. Feb 15, 2005 #3
    Thanks for your hint and help ,and I will try to figure out this question by myself.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook