TheRedDevil18
- 406
- 2
Homework Statement
Homework Equations
The Attempt at a Solution
[/B]
Using the equations above, I'm not getting the right answer for beta which is 0.4926 V/A.
Is my model wrong ?
Operational amplifier with feedback problem
- Thread starter TheRedDevil18
- Start date
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
8 replies · 3K views
[/B]
Using the equations above, I'm not getting the right answer for beta which is 0.4926 V/A.
Is my model wrong ?
- 9,253
- 1,080
The op-amp's ro should be shown in series with the controlled voltage source.
TheRedDevil18
- 406
- 2
So with a voltage source, ro is always in series ?NascentOxygen said:
- 9,253
- 1,080
Yes.TheRedDevil18 said:
If you were to place a resistance in parallel with an ideal voltage source, what would be the Thévenin equivalent resistance of that combination?
TheRedDevil18
- 406
- 2
NascentOxygen said:
Would it be a voltage source in series with the resistance ?, I know that a current source with a parallel resistance is equal to a voltage source in series with that resistance
- 9,253
- 1,080
Guessing is not allowed.TheRedDevil18 said:
Can you determine it?
TheRedDevil18
- 406
- 2
NascentOxygen said:
Would it be zero ?, I determined it by using the rules. When you have a voltage source you short it and remove the load, so that means all the current will flow through the short and not through the parallel resistor
- 9,253
- 1,080
Right. A resistance has no effect if you erroneously add it parallel to an ideal voltage source: the effective source resistance here would stay as zero.TheRedDevil18 said:
TheRedDevil18
- 406
- 2
NascentOxygen said:
Ok, thanks, I'll attempt the question again