Questions tagged [mesh]

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Mesh WiFi ESP32-C3

I am referring to the internal communication example for ESP mesh from the last two weeks but I am unable to make connections between two ESP32-C3, one as the root node and the other as the parent ...
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3 votes
2 answers
79 views

Help Solve a Circuit Using Mesh Current Analysis

I'm Trying To Solve This Circuit Using Mesh Current Analysis But I'm getting that the currents are unsolvable (Matrix is wrong ) . Question : Find The Power of Each Source in : $$ \Downarrow $$My ...
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Odd results from mesh current analysis in a circuit with a diode

I have this circuit: simulate this circuit – Schematic created using CircuitLab The reverse saturation current of the diode is 10^-6 A. I use mesh current analysis to find the current inside ...
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1 answer
131 views

Finding Transfer Function of RL Circuit

Can anyone help me to find TF of this RL Circuit
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1 vote
2 answers
49 views

Linear model of diodes for mesh current and nodal voltage analysis?

If we use the piecewise linear model for diodes, can we apply mesh current and nodal voltage analysis to a circuit containing a diode?
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2 votes
2 answers
79 views

Nodal and Mesh analysis

I need to find the currents on each resistor of this circuit: Where \$\beta\$ is a constant with units of resistance. Applying Kirchhoff's laws the equations are: $$ I_1+I_3-I_2 = 0 $$ $$ V_0-I_1R_1-...
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2 answers
293 views

Using mesh current method find current and power in 15 Ω and 3 Ω resistor branches of the circuit

I assumed i1 in the left-most mesh, i2 in the right-most mesh and i3 in the top mesh, all clockwise. i2=-2 A from the circuit The equations I got were: from left mesh: 11 - 14 i1 + 12 i2 + 2 i3 = 0 ...
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5 votes
5 answers
549 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 ...
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1 answer
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Please help me get this equation part right

Hello everyone, I am understanding the concept of mesh analysis and super meshes. In the Practice problem below, I am presented with a dependent current source and it lies between mesh 2 and mesh 3. ...
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1 answer
70 views

Question 4.56 from Nilsson and Riedel 8Ed Mesh Analysis

I need to solve this problem using meshes. I had no problem doing it by nodes but when I try to do it by meshes it doesn't match with the final answers. It asks the power from the 10 V source. From ...
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1 vote
3 answers
409 views

How did the authors arrive at the answer?

I am reading the book "Fundamentals of Electric Circuits 6th Ed." by Sadiku and Alexander and one of the practice problems (Practice Problem 3.7) I did not get right. The 4A current source ...
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1 answer
334 views

Q: Homework - Past exam solution Is this the right solution?

I am trying to find Vo but I am not sure If this solution right? Is there a shorter path to find Vo? solution
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Is It necessary to write in mesh equation of Kirchoff's voltage law the voltage of current source?

I want to do mesh analysis so I wrote the mesh equations but I am not sure which is the right mesh1 or equation4 equation (these 2 equation are for mesh 1 ) ? has to write the voltage Vx everytime I ...
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1 answer
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Help solving circuit with Mesh Analysis and Current Source

I've been for some hours trying to solve this thing with Mesh Analysis but I don't seem to be able to understand how to do it! Could anyone please explain how I can do this? Disclaimer: I've never ...
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1 vote
3 answers
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Sign actual current with mesh current for ac circuits

Take a look at the following circuit, using mesh method, we can have the following two equations $$ \begin{align} (Z_1+Z_3) I_1 - Z_3I_2 &= V_1 \tag{1} \\ -Z_3 I_1 + (Z_2+Z_3)I_2 &= -V_2 \tag{...
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1 answer
695 views

Difference between KVL and mesh analysis

Are KVL and mesh analysis, the same? I am confused. What is the characteristic difference between them?
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1 answer
73 views

Deriving equivalent impedance of circuit with pi sections

Hello everyone, I am currently trying to find the equivalent impedance of this circuit. The circuit consist of a load C1 which are connected to a two pole pi section with line inductors which are in ...
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4 votes
1 answer
362 views

Find current 'i' using Nodal Analysis

Here I know how we apply nodal analysis, but can somebody explain how can we calculate the current 'i' if there is no resistor in that particular wire? I have shown my approach and working so far. I ...
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1 vote
2 answers
137 views

Mesh analysis equations with dependent current sources

I can't get the correct mesh analysis equations for the circuit above. The end result I got for \$i_x = 0.111\$... but that does not work in simulation. Iused the equations below, the approximate ...
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2 votes
4 answers
143 views

Circuit analysis (Current intensity)

In my electrical engineering lecture we analyse such circuits with given Resistances \$R_i\$ and given \$U_{q1}\$ and \$U_{q2}\$ ( see example below ), and we try to find the current intensity \$I_{i}\...
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1 vote
3 answers
56 views

Source transformation brings out a different result compared to other methods

High schooler here that just recently found out about source transformations. I wanted to try it out on a previous circuit we did using the good ol' KCL/KVL/Node/Mesh methods, but somehow, it gave me ...
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1 answer
45 views

Regarding behaviour of a branch between two independent meshes

I'm trying to understand how a branch not part of loops affect the circuit. In the following, I can apply KVL on the two loops (supermesh and the one on the right) and I get the correct answer. The ...
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2 votes
0 answers
82 views

Randomize PCB trace generation with Altium Designer

We are trying to create a tamper mesh as a flex PCB. This tamper mesh will consist of around 10 signal traces in order to detect a tamper. One crucial point is that this tamper mesh should be ...
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2 votes
2 answers
298 views

Circuit analysis using Mesh current method

I want to find voltage across 3k resistor using Loop/Mesh analysis. answer in SPICE = 4.0135 My Solution : $$ 8=2(I_2)+1.5(I_2-I_3)+3(I_1-I_3) $$ $$ 0=3(I_3-I_1)+1.5(I_3-I_2)+10(I_3) $$ $$ I_1-I_2=0....
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2 answers
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Can you help me understand this Node Analyzing Method in Thevenin Norton Circuits

This is the circuit, and the node method solution is: Where did 280 come from? why is there two Vt/60 ? Please help me
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1 answer
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Mesh current formulas gives two different results for i2. Why does the first loop provide an incorrect current value?

Mesh current formulas gives two different results for i2. The formula derived from the second loop provides a current of 1A which is the correct answer. However, when I write my equation using the ...
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3 answers
2k views

how to find Thevenin Equivalent Voltage and Thevenin Equivalent Resistance?

pls help me solve this question it’s confusing me
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1 answer
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Can you help me to understand this thevenin circuit's mesh?

Why didn't we involve the 4 Ohm resistor while doing the mesh i2 ?
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1 vote
1 answer
103 views

HOMEWORK: Need assistance inputing Mesh Analysis complex equations into TI89

Good Afternoon, I am having calculator difficulties in regards to inputing my mesh equations into my TI-89. The answer I am receiving is not the answer that was presented in the solution provided by ...
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1 vote
1 answer
172 views

How to use nodal or mesh analysis with a current source?

This is my circuit: The task is to get \$V_0\$ using Norton's theorem. My problem here is how current sources work. I tried to use mesh analysis first, but didn't know how to. Then I tried to use ...
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1 vote
0 answers
66 views

How do you choose loops for the loop circuit method?

I need to understand how to choose loops for the loop current method of circuit analysis; ideally I'd like to be able to do it by means of an algorithm, so a vague intuition isn't sufficient. Can ...
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3 votes
1 answer
97 views

RC Circuit Analysis Direction Changes Formula

In my Circuit Theory lesson, we were studying RC circuits and there was a question which I tried to make before our senior but I accidentally came up with a different answer due to choosing current ...
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5 votes
5 answers
7k views

What is the voltage drop across the 10 ohm resistor?

What is the voltage drop (V1) across the 10 ohm resistor? Can I use voltage division to get V1? Like V1 = (20 V x 10 Ω) / (10 Ω + 4 Ω) But when I use nodal analysis and mesh analysis I get a different ...
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3 votes
2 answers
351 views

Limitations of When to Use Mesh Current Method

For this circuit, is it possible to solve for i solely with the mesh current method? I know that this would be even easier to do with application of the fundamental laws or the node voltage method; I ...
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0 votes
0 answers
41 views

How do I solve this question?

In the given figure, the steady state is reached with the switch open. At t = 0, the switch is closed. Find Vc(t) for t > 0. How do I proceed solving this question? So far, I've tried applying KVL ...
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1 vote
3 answers
358 views

How to solve this problem using supermesh analysis

Can we solve this problem using supermesh analysis? I thought you needed to have a common current source between each mesh? Is there an easier solution to this problem?
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1 vote
0 answers
48 views

Mesh Analysis with only current source.?

**Can we use mesh analysis and get current in 1ohm resistor....and is not then why? **
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1 answer
131 views

Multiple voltage dividers : finding resistances in a circuit

I have to set the battery voltage to 14.5V from the first divider, then from that I have to attenuate it to 1V to feed to the input of an op amp. Now this answer is inspiring but doesn't solve my ...
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2 votes
1 answer
148 views

Where did I go wrong in formulating my mesh equations?

I think I've got my mesh equation right for mesh 1,3,4, and 5. But I'm dumbfounded at mesh 2 since the 20 mA current source is included in the mesh, when I write it all and place all the unknown ...
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1 vote
1 answer
318 views

Why does the mesh current equal for Thevenin's Equivalent

The question wants us to find the thevenin's equivalent of this circuit. Vth is across R. The 5ohms and 6A was transformed into a series voltage and resistance. The answer shows that the first loop is ...
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0 votes
1 answer
196 views

Mesh Analysis for Complicated Circuit

How do I solve this Circuit with Mesh Analysis method? Help Please. Specificly with mesh analysis please, with nodal analysis its easy.
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0 votes
1 answer
47 views

Mesh Wire opening size for emi filter at frequency of 30Mhz

I want to use a mesh wire and I wanted to know how do I calculate an opening size of a mesh wire that can filter 30Mhz frequency. Your help is appreciated.
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1 vote
0 answers
266 views

Two port networks - Why are shared Z-parameters not negative?

In basic electronics we learned that to solve a circuit using mesh analysis, the shared impedances had to be negative. For example in the circuit bellow, the system of equations would be: $$\begin{...
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-1 votes
1 answer
148 views

how do i find the resistance R in this? I tried using kvl and kcl but still not able to find the answer

I have tried it with kcl and kvl but not getting the answer. Then i tried with mesh analysis.But no good. Any help will be greatly appreciated.
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2 votes
1 answer
198 views

Why can’t i use a supermesh analysis on this circuit?

Hi I want to ask you why i can't use a supermesh like this blue line. The answer of this question is io=3.1 A. I tried several times to use a supermesh but It doesn't work. Is it because of the ...
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2 votes
2 answers
214 views

Mesh current analysis - with AC in s-domain

I have the following problem: Consider the circuit below, with \$v_1(t)=5\text{V} \ \sin(\omega_0t)\$ \$v_2(t)=1.2\text{V} \, \cos(\omega_0t)\$ \$V_3=9 \text{V}\$ \$i_s(t)=0.5\text{A} \, \cos(\...
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2 votes
2 answers
512 views

How to calculate using mesh method when there's a current source and a resistor between two meshes

I'm trying to get the current in the 3 ohm resistor using mesh analysis. Forget about thevenin's theorem here. However, what I know is that if there's a current source between two meshes then we do ...
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0 votes
3 answers
110 views

Is supermesh the right way to go?

I have this problem and I'm wondering if using the Supermesh method is the right way to go? When assigning how the currents are flowing they should be clockwise, but how should I think when the ...
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0 votes
2 answers
202 views

AC circuit analysis with a transmission line involved

I'm trying to perform an AC analysis of a circuit that contains a piece of coax cable. The input voltage 'Vs' is a swept frequency (1MHz-150MHz) voltage source with constant amplitude. What I'm ...
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1 answer
66 views

Question regarding supermesh

So im trying to solve the folowing circuit using mesh analysis but i cant get the right results.Im trying to find the currents of mesh 4(down to the right) and mesh 1(left on the upperside).Ive ...
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