home > q&a board > electrical engineering > topic: op-amp circuit

Q BgQuestion:

Scholar
Karma Points: 200
Respect (100%):
posted by  rocker4227 on 7/14/2008 1:12:11 PM  |  status: Live  

op-amp circuit

Course Textbook Chapter Problem
N/A N/A N/A N/A
Question Details:
Find (t)  in terms of (t) and (t).
Bonus Point Alert! Earn +4 additional karma points for helping this annual member.

AAnswers:

Answer Question
(Cramster SME)
Moderator
posted by shann(EE-SME) on 7/15/2008 2:19:44 AM  |  status: Live
Asker's Rating: Helpful   
Response Details:
For analysis the circuit is represented as below:
 
       
 
Voltage at inverting and non-inverting terminal are equal due to virtual short-circuit between these terminals.
Consider  and
By applying KCL at inverting terminal of op-amp1, we can get
.................... (1)
By applying KCL at inverting terminal of op-amp2, we can get
.................... (2)
By using superposition theorem to the op-amp3 we can write as below:
From equations (1) and (2)
 
I hope this helps you............................
Answer Question
Ask New Question

Join Cramster's Community

Cramster.com brings together students, educators and subject enthusiasts in an online study community. With around-the-clock expert help and a community of over 100,000 knowledgeable members, you can find the help you need, whenever you need it. Join for free today »

Need Help In

Useful Links