• anonymous
why in common emitter output wave is 180 out of phase?
  • Stacey Warren - Expert
Hey! We 've verified this expert answer for you, click below to unlock the details :)
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
  • schrodinger
I got my questions answered at in under 10 minutes. Go to now for free help!
  • KenLJW
The common emitter mode, taking output from collector, actually has a positive current gain which causes the drop across the load to increase thereby decreasing the voltage at the collector. The above uses the standard convention that input/output currents and considered positive into their respective node. If you take the output across an emitter resistor in this mode the output is in phase with the input, usually with a gain close to one.
  • arnavguddu
for CE we can write the KVL at output as V0 = VCE = Vcc - IcRc eliminated the emitter Resistance No Ic = B Ib where B = beta gain So differentiate the output KVL we get dV0 = -dIc Rc = -dIb B Rc as B and Rc are assumed constant for our CE circuit The - sign indicates that phase of output voltage is 180 deg out of phase with Input current. Input current being function of input voltage, u get Input voltage and Output voltage are 180 out of phase. This is the mathametical explanation....
  • Koikkara
For more Information.... Thank you

Looking for something else?

Not the answer you are looking for? Search for more explanations.