Solving Source Transforms: Finding v(out)

  • Context: Engineering 
  • Thread starter Thread starter dwn
  • Start date Start date
  • Tags Tags
    Source
Click For Summary

Discussion Overview

The discussion revolves around solving a problem related to source transforms in the context of an operational amplifier circuit. Participants are seeking guidance on calculating the output voltage, v(out), and understanding the role of specific components in the circuit, such as resistors and voltage sources.

Discussion Character

  • Homework-related
  • Technical explanation
  • Mathematical reasoning

Main Points Raised

  • Some participants inquire about how to incorporate the simplified positive terminal of the op amp into the overall equation for v(out).
  • There are questions regarding the role of a 370Ω resistor and a voltage source at the v(out) node, specifically whether they should be subtracted from the (Rf/R1)*v(out) equation.
  • One participant asks for the specific equation used when a voltage source is present at the positive terminal of the op amp.
  • Another participant mentions the equation v(out) = A(v(+) - v(-)) but expresses uncertainty about the next steps in the calculation.
  • A participant provides a calculation for v(out) using a specific formula, yielding a value of 0.4383 V.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the approach to solving the problem, with multiple questions and uncertainties remaining about the calculations and the roles of various components.

Contextual Notes

Some assumptions about the circuit configuration and the definitions of terms may be missing, which could affect the clarity of the discussion. The mathematical steps leading to the final calculation are not fully resolved.

Who May Find This Useful

Students or individuals working on operational amplifier circuits, particularly those interested in source transforms and output voltage calculations.

dwn
Messages
165
Reaction score
2

Homework Statement



See Image

Homework Equations



Source Transforms

The Attempt at a Solution



After having simplified the positive terminal of the op amp, how is this calculated into the overall equation to find v(out)? Also, at the v(out) node, in what respect is the 370Ω resistor and voltage source considered? Would this be a subtraction from (Rf/R1)*v(out) equation?
 

Attachments

  • Screen Shot 2014-03-29 at 8.05.44 PM.jpg
    Screen Shot 2014-03-29 at 8.05.44 PM.jpg
    16.7 KB · Views: 516
Last edited:
Physics news on Phys.org
dwn said:

Homework Statement



See Image

Homework Equations



Source Transforms

The Attempt at a Solution



After having simplified the positive terminal of the op amp, how is this calculated into the overall equation to find v(out)? Also, at the v(out) node, in what respect is the 370Ω resistor and voltage source considered? Would this be a subtraction from (Rf/R1)*v(out) equation?

Can you please post your work? This appears to be a pretty straightforward problem.
 
Is there a specific equation we use, or do you know what it is called when the voltage source exists at the positive terminal of op amp?
 
Can someone please provide a little bit of advice or direction on how to solve this. I have simplified the positive terminal of the op amp, and I know that v(out) = A(v(+) - v(-)) ... but I don't know what to calculate.
 
berkeman said:
Can you please post your work? This appears to be a pretty straightforward problem.

One more chance before your thread gets deleted...
 
-v1(Rf/Rin) = v(out)

23.9mV*(33k/1799.6) = v(out) = 0.4383 V
 

Similar threads

Replies
15
Views
3K
  • · Replies 8 ·
Replies
8
Views
6K
  • · Replies 11 ·
Replies
11
Views
4K
Replies
1
Views
2K
  • · Replies 10 ·
Replies
10
Views
6K
Replies
3
Views
3K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 18 ·
Replies
18
Views
3K
Replies
1
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K