# Questions tagged [nodal-analysis]

A circuit analysis method in which Kirchhoff's circuit laws are used to determine the voltage between all nodes (points where circuit elements connect) and the current through all elements. Always using in conjunction with the "circuit-analysis" tag.

144 questions
Filter by
Sorted by
Tagged with
1k views

### Determine Thevenin's equivalent circuit

I am doing my first year of engineering and have EE as a compulsory course. My teacher recently gave this question in an exam. He gave me a 5/10. He is not answering anybody's doubts. Can anyone tell ...
• 51
524 views

### How can same points have different current?

Aren't B and D the same point and shouldn't it actually be (B and B)? If they aren't the same point what should be the current from B to D? Why is it 2 amperes (from the answers) and not 10 amperes as ...
354 views

• 23
403 views

### Supernodes and KCL

Lets talk about Colpitts oscillator again (or the very basic circuit theory if you want). Suppose I modeled circuit as on the schematics below I am interested in systematic ways of obtaining circuit ...
• 107
1k views

### Nodal analysis in s-domain help

I am learning circuit analysis in s-domain from my textbook "Engineering Circuit Analysis by William Hayt, 8th Ed". I am struggling with the mesh and nodal analysis. In the book at page 583, there is ...
• 213
54 views

### Thevenin Theorem Problem

I am struggling to find the thevenin equivalent voltage for the following circuit. I attempted using source transformation and mesh analysis by initially transforming the current sources into voltage ...
84 views

### Trouble understanding how dependent current sources affect a circuit (Two-port networks)

While reviewing a problem from my recent test on two-port networks I noticed that it made its way online. When someone was explaining the solution they utilized a point that I just completely missed. ...
91 views

### Nodal analysis for dependent voltage source

I want to apply nodal analysis at the red marked node of the above circuit. Here is my equation : $$0.2v_0 - i_0 - 5 + \frac{v_3}{40} + \frac{v_3 - v_2}{10} = 0$$ My equation includes a supernode ...
• 121
1 vote
57 views

### How does Kirchoff's current law work for sinusoidal voltage sources?

I was solving a steady state question with sinusoidal AC voltage source and the solution for the question used Kirchoff's current law to find the nodal voltage of a node. Now, I used to think that I ...
• 47
1 vote
438 views

### Dependent voltage/current sources

I'm so sorry for that questions, but we need to understand what's going on behind the concept/theoretical of using device "dependent voltage/current source"! My question: Yes, we are using dependent ...
• 57
1 vote
290 views

• 752
1 vote
121 views

### How do I calculate the K for the dependant source using nodal analysis?

The question has provided power supplied by the voltage source and Vab = -3.6 V. I had tried several ways but still can't solve it. Below is the solving steps I tried:
1 vote
83 views

### Utility of Node Analysis in Designing Circuits Step-by-Step

Question: Does node analysis have any utility when designing a circuit step-by-step, or must the entirety of the circuit be known before node analysis is useful? Here's an example to illustrate what I ...
1 vote
349 views

### Node Method vs Simple KVL and KCL Equations Difference

I am just quite confused when deriving some equations for this simple circuit. Using just KCL and KVL (loops in green) to the best of my understanding, I get the first set of equations. Firstly, are ...
1 vote
246 views

### Performing small signal ac analysis with non-linear components

I have written a circuit simulator that uses Kirchoff's voltage and current laws to solve linear circuits containing capacitors, resistors, inductors and op-amps (where the op-amps are assumed to be ...
• 480
1 vote
87 views

### Nodal question with current-controlled voltage source connected to independent voltage source

so i've got a question here the question is to calculate v1 & iΦ, of course for nodal analysis (v1/24) + ((v1-(60+6iΦ))/3) + ((v1-va)/2) = 0, but (with va as the node left of 2 ohm resistor) how ...
• 13
1 vote