Find Thevinin Equivalent for AB - Electrical Circuits Homework

Click For Summary
SUMMARY

The discussion focuses on finding the Thevenin equivalent for points AB in an electrical circuit. The user initially attempts to calculate the voltage across points AB using the current splitting method, but identifies an error in their approach. The correct method involves setting the dependent current source to zero and calculating the Thevenin equivalent resistance (Req) using the formula Req = V1/i, followed by restoring the dependent source to find the Thevenin current source (Ith) as V/Req.

PREREQUISITES
  • Understanding of Thevenin's Theorem
  • Knowledge of circuit analysis techniques, including current division
  • Familiarity with dependent sources in electrical circuits
  • Ability to calculate equivalent resistance in complex circuits
NEXT STEPS
  • Study Thevenin's Theorem applications in circuit analysis
  • Learn about dependent sources and their impact on circuit behavior
  • Practice calculating equivalent resistance in circuits with multiple sources
  • Explore advanced circuit analysis techniques, such as nodal and mesh analysis
USEFUL FOR

Electrical engineering students, circuit designers, and anyone involved in circuit analysis and design who seeks to deepen their understanding of Thevenin equivalents and dependent sources.

erezb84
Messages
43
Reaction score
0

Homework Statement


I need to find the thevinin equivalent for points AB.

The Attempt at a Solution


I know the Is current is splitting equally between R1 and R3, but doesn't go to R2 because of the dependent current source.
so i thought that through:
I(R5) = Is
and I(R3)=Is/2
so the Vab=-3/2*IS*R
but this is wrong.
where is my mistake?
thanks!
 

Attachments

  • 2.JPG
    2.JPG
    14.3 KB · Views: 521
Physics news on Phys.org
1. Let Ig = 0, put V1 across RLand compute i. Then thevenin Req = V1/i.

2. Restore Ig, compute V across RL. Thevenin current source then is V/Req.
 

Similar threads

Replies
5
Views
4K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
1
Views
2K
  • · Replies 9 ·
Replies
9
Views
7K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 26 ·
Replies
26
Views
3K
  • · Replies 22 ·
Replies
22
Views
3K
  • · Replies 7 ·
Replies
7
Views
4K