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: Common Emitter Amplifier

  1. Mar 16, 2010 #1
    Can someone please explain to me with what reasoning RL and RC are taken to be in parallel when calculating Vo for any decrease/increase in IC (DC) due to isig (ac)

    Thank you

    Attached Files:

  2. jcsd
  3. Mar 16, 2010 #2
    In AC analysis there should be a very low impedance between ground and Vcc. Likewise Cc2 is assumed to be a short, thus RL and Rc are in parallel.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook