Finding voltage gain for PNP BJT amplifier circuit

2 replies · 2K views · last reply
aryisee
Messages
1
Reaction score
0
{Moderator note: moved from technical forums, so no template}

Hi,
My mid-term quiz is next week. I have tried to solve this question but I'm stuck on Qn 4 Part H. Any hints??

Image for Qn 4:
http://imgur.com/gb9jEfW
Printed exam question 4 showing an npn BJT amplifier circuit with V_CC = 10 V, R1 = 12 k, R2 = 8 k, R3 = 3 k, beta = 100, and parts (a) to (h) listed below.


My Answers for QN 4:
http://imgur.com/a/fS3GM
Handwritten worked solution on lined paper: a PNP BJT amplifier circuit schematic at top, followed by voltage divider and collector current calculations with resistor values and equations.


Can you help me check my answers too? Thank you!

Edited: I retook the photo. Sorry! The image at imgur is much clearer.
 
Last edited by a moderator:

Discussion

you should have posted this in the homework section
I have asked for it to be moved

you second image is almost impossible to read
how about typing it in here or doing it in a word processor and screen dumping to the thread
 
For part H, use logic similar to that used in part D. They are just different ways of stating the same concept.