Hi guys -
i have a question im really stuck with,hope someone can help.

Im asked to find the voltage gain av from the given diagram -
And to comment on what is happening with the given graph results.

http://i45.photobucket.com/albums/f69/fiatcoupe20vt/question gain/question2.jpg

To work out the gain should i use -

Av = - ( Rc ll Rd ) / Rs + 1/gm

Or -

- RL ll Rc / Re

Or have i got the formulae completely wrong ?

any help appreciated

thanks

 

Hi guys , still struggling with this question, if i do the calculation with the first equation i get a gain of 5.375.

just dont know if its right ?

Any amplifier wizards out there that can advise ?

thanks

 

anyone any pointers?