![]() ![]() When computing output impedance, if R3 and RL were too big, you should take into consideration r0, the output impedance of the transistor (in the high tens to hundreds of kohms, typically). There are some deviations from the ideal that don't count in your circuit. The loaded voltage gain is -Rout / R4, with Rout = R3 || RL as above. Output impedance of the first stage will be dominated by R3, as for your textbook. This one covers what you need, page 6-26 contains an useful summary. When learning this, I liked Professor Najmabadi's notes on discrete amplifiers very much. Im pretty sure the input impedance of the second stage is the load resistance of the first stage correct? Please help. I need to know how to calculate Zout and Av. I google this and couldnt find anything that helps. It uses a cascading BJT amplifier to teach about coupling and bypass amplifiers, but thats it! This is crazy. Also, the book doesnt teach anything about cascading BJT amplifiers as well. The book uses zalues of output impedance all over the place to teach how the amplifers work but doesnt say how to calculate it. Its says how to calculate it for a CC amplifier, but not a CE. My class book doesnt say anything about calculating it for a CE amplifer. I just dont know how to calculate the output impedance. I know and understand is that the output is impedance is usually low and input impedance is usually high. Im trying to solve the output impedance (Zo) for the first stage. I attached the assignment and what i've done so far. I do to an extent, but I'm definitely missing something here. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |