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Electrical_kid
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[Mentor's Note: Thread Moved from EE Forum]
This link has the picture, for some reason it wasnt showing in this post. http://i.imgur.com/TYlb32t.jpg
Here is my problem, I am supposed to use this circuit and solve for Av and Rin. My problem is that I have solved for Av but I can't solve for Rin no matter what I use. Its very frustrating. I need to use the pi model.
Here is my work for the Av gain.
Please let me now if this is correct and then a tip on how I can solve for Rin which should be Rin = RB|| r_pi (R_E(1+B)). Is Vbe only across r_pi or r_pi and R_E?
Av = -B(R_C||R_L)/(r_pi) which is what I have in my work in the upper right middle
This link has the picture, for some reason it wasnt showing in this post. http://i.imgur.com/TYlb32t.jpg
Here is my problem, I am supposed to use this circuit and solve for Av and Rin. My problem is that I have solved for Av but I can't solve for Rin no matter what I use. Its very frustrating. I need to use the pi model.
Here is my work for the Av gain.
Please let me now if this is correct and then a tip on how I can solve for Rin which should be Rin = RB|| r_pi (R_E(1+B)). Is Vbe only across r_pi or r_pi and R_E?
Av = -B(R_C||R_L)/(r_pi) which is what I have in my work in the upper right middle
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