Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [nodal-analysis]

The tag has no usage guidance.

0
votes
0answers
17 views

Find the power supplied by the 1V source in the circuit using nodal analysis

My attempt: At node 1 > 4 = 6 + I1 Node 2 > I1 + I3 = I 2 Node 3 > 6 = I 3 + I 4 I1 = (V1 - 4)/21 In node 1, Using the equation for I1, V1 = -38V. I2 = (V1 - 4 - 1)/2 So, I2 = -21.5A Power ...
0
votes
2answers
53 views

Nodal analysis of a basic DC circuit

I am trying to find the v1, v2, v3 and i5 using nodal analysis. I gave the name to the current over the respective resistors i3 and i4 and put it as i0 - i3 - i4 = 0 also write the equations as i3 = (...
2
votes
2answers
65 views

Where did this useful matrix decomposition come from for Nodal Analysis?

Background The equations formed when finding the nodal voltages of a circuit can be expressed using nodal analysis as a square system matrix \$\mathbf{S}\$ (lets say \$m\times m\$ where \$m\$ is the ...
0
votes
2answers
60 views

Thevenin's Theorem: Why is there a \$R_{th}\$

Consider a linear mess present inside the box, simulate this circuit – Schematic created using CircuitLab If there's a voltage drop \$v\$ across the load, then why cant we simply replace the ...
0
votes
1answer
41 views

How do I calculate the collector current of this circuit with a bipolar junction transistor?

I need to calculate the collector current of this circuit, but I don't know how to approach it. I think the circuit is in the active zone but since my teacher isn't responding to my emails I'm not ...
0
votes
2answers
52 views

How can this circuit be solved with the node method?

I tried to solve this using the node method and it yields 0 on Mathematica, which I believe isn't correct. I'm trying to solve I1 first. simulate this circuit – Schematic created using ...
0
votes
1answer
38 views

Node analysis with voltage source in matrix form

simulate this circuit – Schematic created using CircuitLab Can you please check if my reasoning is correct? The sum of currents leaving node k is: $$ I_k = \sum_{i = 0}^{n} I_{ki} = \sum_{i = ...
2
votes
1answer
138 views

Intuition on Thevenin's Theorem

In the following lecture by Prof. Anant Agarwal at 36:00, he intuitively proves Thevenin's Theorem using the following circuit simulate this circuit – Schematic created using CircuitLab If ...
-5
votes
1answer
66 views

Solving a circuit with Nodal Analysis [closed]

I've been trying to start solving the circuit for a long time now, but I've no idea where to begin, what node should be grounded. Someone please solve this circuit ina detailed manner
0
votes
1answer
58 views

Mesh Analysis has failed to solve this circuit

I built the following circuit in LTSpice and found each mesh currents to be (which also matches the answer sheet provided by my professor): i1: 9A i2: 8A i3: 11A i4: -6A However, I am unable ...
2
votes
3answers
131 views

Nodal analysis -> transfer function -> step response

I've been trying to get the transfer function for the circuit in the image below, but I seem to be doing something wrong, since the simulation on Circuitlab gives me a different Bode plot and I can't ...
0
votes
0answers
32 views

Actual direction of phasor current - Power Calculation

I am trying to calculate the complex power in this circuit. I used nodal analysis to find Vc, and the voltage at the top of the 2H inductor (=3.13<177.8 V_RMS). I did the math for all elements in ...
0
votes
2answers
134 views

Nodal analysis using supernode tough problem

Hi I am stuck on the following problem: I know I have to use a supernode but I dont know where to put it.
1
vote
2answers
57 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 ...
4
votes
3answers
519 views

What is the value of the current (i) and what is the right way to do it? [duplicate]

What exactly went wrong with the below method? Here, in the same circuit I am getting a different value for the current in the mid wire only by rearranging the circuit. I was trying to solve this ...
2
votes
1answer
74 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 ...
0
votes
1answer
127 views

What's wrong with this Wheatstone bridge?

I was trying to solve this unbalanced Wheatstone bridge and found that the current $i$ in the mid wire is 9A .This result was achieved by using node voltage method. Then I rearranged the same circuit ...
0
votes
0answers
30 views

For given circuit, does the current “io” through the branch equal zero after short circuit ? [2-port network]

The circuit is; simulate this circuit – Schematic created using CircuitLab For given 2 port network, Im shorting V1 to solve for y22 and y12 and apply a current source at V2.[Y-Parameters] ...
0
votes
0answers
42 views

Determine Y-parameters for given circuit. [Used Nodal Analysis]

I am trying to solve this circuit for past 3 hours, no success, so I am posting here. simulate this circuit – Schematic created using CircuitLab I used nodal analysis, I will go over the ...
0
votes
1answer
83 views

Measuring the effect of a resistor

In an idealized model, the voltage at node1 is the same as the voltage at node2. However, in reality waves take time to travel and the voltage at node1 will not be identical to the voltage at node2. I ...
0
votes
1answer
166 views

Doing nodal analysis on a circuit with a capacitor.

I'm looking at with the switch open. I get While going through the nodal analysis I get V1 = 3V Does that mean current across the resistor would then just be 1mA?
-2
votes
1answer
68 views

How to find the transfer function F(w) for this circuit? [duplicate]

Hi, My book on analogue circuits has this question and I have been stuck at it for the past three days or so. I am supposed to figure out the transfer function for the network as well as the cutoff ...
3
votes
4answers
112 views

Basic nodal analysis question

I have a question about node analysis method. The part I could not solve is the Node c's equation. In equations, C is represented by 3.Here is my question what is G5(i=GV) in the circuit. The empty ...
1
vote
1answer
85 views

How to solve a circuit network involving a resistor parallel to a voltage source using only nodal analysis?

I have been stuck on this for the past week and this week i just dont seem to find out what am i doing wrong. Please help me spot my mistake. Here you can find My circuit on multisim. Please provide ...
1
vote
1answer
64 views

Nodal Analysis & Identifying Nodes

What is a Node? In electrical engineering, a node is any point on a circuit where the terminals of two or more circuit elements meet. An image from my textbook... Why is the node rightward of ...
1
vote
1answer
49 views

Writing the Nodal and Mesh equations for large circuit and large supermesh

Here's my circuit: simulate this circuit – Schematic created using CircuitLab I have defined the node 'voltages' and the mesh current directions and the currents themselves. What I want to do ...
-2
votes
1answer
61 views

Opamp confusion

I would really appreciate a little help here if someone explain me why his Voltage is 4v while mine is 10/3 and one more thing: whats the point of Applying KCL at node 1 when 5v is already known at ...
0
votes
1answer
51 views

Finding current over controllable voltage source using nodal analysis

I have the following circuit: Let me explain the diagram a bit first: I0 is current in that direction, V0 is voltage and 2 V0 is also voltage times two. V1, V2, and V3 are my nodes. The 'S' by the ...
0
votes
2answers
66 views

How do I calculate I2 by nodal analysis only?

I am trying to do a nodal analysis of this circuit. and I need to do this by nodal analysis only. I need to find \$ i_1 \$, \$ i_2 \$ and \$ i_3 \$. I have found that \$ i_1 = \frac{V_B - V_A}{R_1}...
0
votes
1answer
80 views

KCL for this circuit?

I have this circuit and I know that for \$V_1\$ (taking current exiting the node as positive) it is \$\frac{-(8-V_1)}{2} +\frac{V_1}{4}-\frac{V_2-V_1}{1} -4=0\$ but for \$V_2\$ I'm slightly confused. ...