Questions tagged [mesh-analysis]
For questions about mesh analysis, a circuit analysis method that is used to solve for the currents (and indirectly the voltages) at any place in a planar circuit (planar circuits are circuits that can be drawn on a plane surface without any wires crossing each other). Always use in conjunction with the "circuit-analysis" tag.
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Trouble understanding Thevenin using mesh analysis with independent current sources
I am working through Fundamentals of Electric Circuits and thought I had mesh analysis and Thevenin mostly under control for my level. However, I have ran into a problem I am struggling with:
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MOSFET Large Signal Mesh Analysis By Inspection
Let R1 = 4M Ohm, R2 = 2M Ohm, RD = 8k Ohm, RS = 6k Ohm, VDD = 15 V, VTN = 1 V, VOD = VGS - VTN, and VS = 3 V. The task is to find the Q-Point of the circuit below:
I drew the equivalent circuit (...
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Negative base current for BJT During Mesh Analysis
I'm having trouble finding the base current for a BJT circuit that my professor gave me, with the assumption that the BJT is operating in forward-active mode. The problem is asking me to find the ...
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What is fault of this solution?
Correct answer is
V1 = 78 - j104
V2 = 72 + j104
V3 = 150 - j130
Q) Find the Voltage by mesh analysis
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Where did I go wrong with my mesh analysis equations? Dependent Current Source
I think I'm overlooking something very basic in this problem but I'm having trouble determining what that is! I'm pretty sure the issue is stemming from my equation for mesh 1, but the assumption I ...
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Diode voltage divider problem
For the voltage divider below, I am asked to find the Q-Point for both ideal diodes in forward-bias mode (i.e., they are both short circuits with one-way current):
In my work, I found \$i_1\$ and \$...
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Finding the current of the leftmost voltage source using mesh analysis
I have been trying for a while to solve this question, but no matter what I have tried I have fallen short. I have attempted to use mesh analysis, separating the circuit into three essential meshes. ...
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Getting two different equations for mesh and nodal analysis separately. Where I am going wrong?
I am trying to get the same current equations through mesh and nodal analysis but ending up getting a different one.
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3-Mesh 3-Voltage source 5-Resistor Mesh analysis equation for three currents
I need help solving this question. I am given a circuit with three meshes, given 5 different resistors and 3 different voltage sources, the values given are:
...
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Find voltages and current in polar form
I would like to check whether I got my answer right or not. Here's my attempt at the problem:
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Mesh analysis method
\begin{align}
a &= 7\\
b &= 4\\
x &= a-b-N_i+1\\
&= 7-4-1+1\\ &= 3
\end{align}
\begin{align}
4I_4 &+& 10I_3&-&5I_2 && &=0\\
240 &+& 40 I_1&+&...
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Calculating voltage drop
I’m currently refreshing my circuit analysis skills. What is the most efficient way to solve problems like this? I ended up using an iteration of the mesh loop method, which gave me the current for ...
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Is this question impossible to solve using the mesh-current method?
This is the last question for my circuit theory lab report, I have tried several times to apply the mesh-current method to solve for the values of the three resistors, but I end up with 2 equations ...
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How to determine the power in resistors R1 and R2 in this complex circuit?
I'm trying to solve the circuit shown in the attached image, where I need to determine the power of resistors R1 (4 Ω) and R2 (6 Ω).
I’ve attempted to use mesh analysis, but the results don’t match, ...
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Superposition - Mesh analysis
I am given this circuit:
I try to calculate the current Ix using superpoisition and mesh analysis. First I kill the 12V voltage source and use mesh analysis in the following way (find the mesh ...
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Explain mesh/divider analysis with current source?
I am working the following example. I understand getting the answers using current division, but I want to get the same answers using mesh (loop) analysis but just can't seem to get it. I want to use ...
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Trouble calculating currents in a circuit with Supermesh and dependent voltage source
I stuck with this question : We got current meshes:
I attempted to create a supermesh for I2 and I3 , and a separate regular mesh for I4 To complete the matrix, I added two additional KCL equations: ...
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Why do we typically think about circuits with nodes rather than meshes?
I was trying to wrap my head around the fact that voltages have a ground reference but currents are absolute, and yet, despite this fundamental difference, they are somehow mathematical duals of each ...
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Nodal Analysis on Supermesh Questions
I am a fresher in electrical engineering, So I was solving circuit analysis question with a current source between two meshes. I am not proficient yet in selecting which analysis to do in which case. ...
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What's wrong with my equations?
I'm trying to get the value of v_o using mesh method as it is required. The equations I'm getting are:
For the mesh on the current A I have:
2 - 2(I_a) - 3(I_a + I_b) - 2(I_a + I_c) = 0
for the mesh ...
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Finding Norton current
I am trying to determine the Norton current between the terminals a and b of the network shown below. \$Z_1\$, \$Z_2\$, \$Z_3\$ and \$Z_4\$ could be resistors, capacitors or inductors.
To do so, I ...
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Node Analysis with CCVS
I'm having issues solving this problem, with the CCVS. Here is what I have so far:
$$-(24 - V_1) / 250 - (60I_b) / 150 = V_1 / 50$$
Which simplifies down to: \$-28.8 = 120I_b + 4.8V_1.\$
But without a ...
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Mesh Analysis - 4 variables
I'm working on this problem, and got stuck. The question is asking what i0 is.
For Mesh 1:
-16+4(i_1-i_3 )+2(i_1-i_2 )=0
6i_1 - 2i_2 - 4i_3 = 16
For Mesh 2:
2(i_2 - i_1) + 8(i_2 - i_3) -10i_o = 0
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How can i sovle this mesh circuit by source transformation? If not, do we have nay orther ways? [closed]
Give the circuit as shown above. Detetmine E=? So that the 16V voltage source provides 32W power.
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Transient analysis of RC DC circuit
The task is to find the current that flows through capacitor C. I tried to analyse the circuit using mesh analysis but failed. I need to find the current through C during switching (t=0) and steady-...
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The maximum distance supported between two nodes in an ESP32 based mesh network
What is the maximum distance supported between two nodes in a network implemented using the ESP-WIFI-MESH protocol developed by Espressif Systems for their ESP32 modules? The documentation mentions ...
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Why does each mesh equation give different I3 value? What's the correct value and final answer?
The provided solution considers the third eqn as the correct one and proceeds with the same alone.
Why is the answer achievable only thru the 3rd mesh and why not the first two? Why are they giving ...
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Equivalent resistance of a network
Determine the equivalent resistance across the terminals \$a-b\$.
I placed a \$1V\$ battery across \$a-b\$ and then used mesh analysis on \$4\$ loops which resulted in using \$4\$ equations. But is it ...
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Is there a rule for assigning polarities to resistors or is it truly arbitrary?
Sorry if this is a silly question, I'm new to circuit analysis. I'm still rather confused about how you're supposed to assign polarities to resistors in a voltage. I've been told time and time again ...
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How many meshes are in this circuit? [closed]
Aren't there three meshes here? The solution also says so. I denoted the three loops that I think are meshes, but the instructor said in class that there are 5 meshes. I just cannot find the other two....
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Incorrect current assumed in Hayt Ex 5.3
Here is Example 5.3 from Hayt "Engineering Circuit Analysis" p 129.
I am supposed to solve it using superposition principle. While doing it I incorrectly assumed direction of \$i_x\$. I ...
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Example 3.17: find Vo in a circuit containing a voltage controlled voltage source
Trying to solve this circuit using mesh analysis. However, I am having trouble understanding why Vx = 4kI1 specifically why to go through the 4k resistor using current I1, my intuition wants to set Vx ...
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Equivalent resistance of network of resistors arranged in a cube shape
To determine the equivalent resistance across \$AB\$,I noticed that the three resistors in the lower face of the cube are in parallel combination. So I replaced all three with a single resistor \$\...
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Analyze an RC circuit using either nodal or mesh analysis
How can I analyze the circuit shown in the diagram below using either nodal analysis or mesh analysis? I attempted solving the problem using mesh but ended up with the wrong answer.
To obtain the ...
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How do I apply mesh analysis to this circuit?
I have applied the mesh analysis to this circuit using both clockwise and counterclockwise directions but I ended with different results.
Please let me know if there's anything I'm doing wrong.
Also, ...
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Different answers from mesh analysis and voltage division
This is a problem solving for the voltage across a capacitor with initial conditions. After finding initial conditions and transforming into s-domain, the circuit looks like this:
So, the voltage we ...
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Circuit analysis of a halfwave rectifier
I want to verify whether my calculations are correct. Additionally, there are two questions related to this circuit: 'What is the purpose of R1 and R2 in the given circuit?' and 'What is the intended ...
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Calculations of mesh and nodal analysis of my dc circuit doesnt satisfy any of the KVL or KCL conditions
So I'm working on a course project under my professor and I seem to have encountered a huge problem.
I built my own circuit and solved it using mesh and nodal analysis in MATLAB, got some values but ...
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Mesh analysis of circuits
In this question we are required to find the nodal voltages and current in the circuit.
Why is the 3A current not divided at node (d), that is, one going in 5 ohm resistor and other towards the ...
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How do you use nodal analysis to this circuit?
By using mesh analysis I have 4 equations:
6ia - 2ib = 24
-2ia + 12ib -20ic - 2id = 0
-8ib + 12ic = 0
-2ib + 12ic + 3id = 0
Got ic = 8/3 A, so Vo = 4(8/3) = 32/3 V ; correct me if I'm wrong
But I don'...
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Circuit analysis: how to find the voltage at node 2?
Find the voltage at node 1, 2 and 3 using mesh analysis.
Using mesh analysis I have 3 equations:
$$
6ia+10ib-4ic = 0
$$
$$
-2ia-2ib+4ic = 10
$$
$$
ia-ib=-5
$$
With this equation I find the current ...
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Why doesn't mesh analysis give the correct solution for this question
This is the original question:
and we were supposed to find all current in the circuit. I was told we mesh analysis should be able to solve the problem. But, the voltage across each resistor was 5V ...
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Source Transformation on Dependent Current Source
I am facing issues while finding Vr3(V1) I have redrawn the circuit with circuit being open at current source I1 and have source transformed the dependent current source to a dependent voltage source ...
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Different results when using nodal and mesh analysis; application on a Thevenin equivalent problem [closed]
I need to find the Thevenin equivalent of the given circuit. The problem is that when I use Nodal analysis and mesh analysis I get different results. I know that Rth = 16 Ω. But when I use nodal ...
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State space model of third order circuit
I'm trying to derive a state space model for this circuit: -
simulate this circuit – Schematic created using CircuitLab
The circuit contains four energy storing elements, but is only of third ...
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Why is the current flowing this way in these 2 meshes in a simple circuit?
Just wondering why exactly the current is flowing in the directions depicted in the image below? It is my (rudimentary) understanding that current flows from regions of high potential to regions of ...
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AC Circuit Analysis - Mesh Analysis With Unknown Impedance Value
I attempted the problem below using mesh analysis, but I'm struggling to figure out how to solve and find the impedance Z. I feel like I'm forgetting something very basic, but I can't figure out what ...
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How to solve mesh-analysis problem?
This is a circuit I'm trying to solve using mesh-analysis. I thought I was solving it right but the answers tell me that I'm doing it wrong and I'm not sure why (only thing I know right now is that $...
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What is I1, I2, I3 and I4?
simulate this circuit – Schematic created using CircuitLab
I have really gotten stuck on this question where I need to calculate I1, I2, I3 and I4. The numbers for the circuit is: V(a)=2 V, V(b)=...
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Getting wrong answer for mesh current analysis
The circuit diagram is given below, I keep getting the wrong answer for the mesh currents, I always get -1 for first loop and -7 for second loop. Therefor Ix comes out to be 6 which is wrong. It ...
