Help with Electrical Science question

Discussion in 'Homework Help' started by Ammo, Aug 25, 2010.

  1. Ammo

    Thread Starter New Member

    Aug 25, 2010
    4
    0
    Hi all,

    Im having a bit of trouble answering two questions on a past paer.

    Q1) What are the three principle features of an ideal operational amplifier or op-amp??

    Q2) Draw the power triangle relating active power, P, reactive power, Q, apperent power, S and the power factor angle.

    Any ideas on how to answer the questions, been looking through all my notes and can't seem to find anything.

    Thanks, Ammo
     
  2. Heavydoody

    Active Member

    Jul 31, 2009
    140
    11
    Infintie open loop gain, infinite input resistance, and zero output resistance.

    Look here: http://www.allaboutcircuits.com/vol_2/chpt_11/2.html
     
    Ammo likes this.
  3. Ammo

    Thread Starter New Member

    Aug 25, 2010
    4
    0
    Thanks, you've been very helpfull
     
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