op_amp_problem1 - 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 20 k Ω 5 k Ω 160 k Ω 40 k Ω 0 v + 18 V 18 V (a) Calculate 0 v if 1.5 a vV = and 0 b = . (b) Calculate 0 v if 3 a = and 0 b = . (c) Calculate 0 v if 1 a = and 2 b = . (d) Calculate 0 v if 4 a = and 2 b = . (e) Calculate 0 v if 6 a = and 8 b = . (f) If 4.5 b = , specify the range of a v such that the amplifier does not saturate. Solution According to the virtual open and virtual short circuit properties, the voltage at the negative port of the opamp is equal to b v . The circuit looks like - + a v b v 20 k Ω 160 k Ω 40 k Ω 0 v + 18 V 18 V Note that the dotted line means no current. Using KCL at the node b v 0 0 20 160 ba b vv vv
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.

Page1 / 2

op_amp_problem1 - 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