Amplifier basics........

Discussion in 'Analog & Mixed-Signal Design' started by Nathan Hale, Oct 13, 2016.

  1. Nathan Hale

    Thread Starter Active Member

    Oct 28, 2011
    125
    2
    I will repost my question , with the pins labeled correctly.
     
    Last edited: Oct 14, 2016
  2. #12

    Expert

    Nov 30, 2010
    16,252
    6,750
    What you have there is positive feedback. The output is likely to slam to one of the power supply voltages and never move again.
    If you reverse the inputs, you would have an inverting amp with a gain of 3/1 at very low frequencies, but the capacitor has an impedance equal to 159 ohms at 1 KHz. That makes the gain 3000/ 137.3 and increasing as the frequency increases.
     
  3. Nathan Hale

    Thread Starter Active Member

    Oct 28, 2011
    125
    2
    I am sorry, but pin 3 needs to be negative and pin 2 needs to be positive.
    Wouldnt that make this amplifier an inverting amplifier?
     
  4. #12

    Expert

    Nov 30, 2010
    16,252
    6,750
    If you're going to quote me, you should read what you're quoting.
     
    GopherT likes this.
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