op_amp_problem4 - Sample problems Topic: Operational...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Sample problems Topic: Operational Amplifiers Statement of problem The opamp in the circuit is ideal. - + a v + b v + o v + 18 k Ω 80 k Ω 64 k Ω 72 k Ω 54 k Ω 9 V 9 V b i a i The signal voltages a v and b v are 500mV and 1200mV, respectively. (a) Calculate o v in volts. (b) Find a i and b i in microamperes. Solution (a) The idea is to find out , , o vvv +− , respectively. Due to the virtual open circuit property, the circuit looks like - + a v + b v + o v + 18 k Ω 80 k Ω 64 k Ω 72 k Ω 54 k Ω 9 V 9 V b i a i v + v + From the right hand side circuit, it is easy to write down the KCL equation at the positive
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/30/2011 for the course EE 215 taught by Professor Unknown during the Spring '05 term at University of Washington.

Page1 / 2

op_amp_problem4 - Sample problems Topic: Operational...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online