Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [superposition]

The superposition theorem states that the output of a linear circuit composed of multiple independent sources is the algebraic sum of the outputs due to each independent source alone. Use this tag for questions about circuit analysis using the superposition theorem.

The superposition theorem states that the output of a linear circuit composed of multiple independent sources is the algebraic sum of the outputs due to each independent source alone. To analyze the output of the circuit for an independent source alone, the other independent voltage sources should be replaced with a short circuit and the other independent current sources should be replaced with an open circuit.

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Superposition principle: Dependent sources treated as independent sources

Since I began studying, I was taught that when analysing a circuit using multiple sources, independent sources could be turned off, meaning that I could transform a voltage source into a short, and a current source into an open circuit and analyze…
S.s.
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Why superposition theorem fails here?

I have a simple circuit consisting of 2 ideal voltages sources (each 5V) parallel to a resistor of 5 ohms. The current along the resistor is 1A, right? But by applying the superposition principle (i.e. considering individual sources), I am not…
dexterdev
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Why is the verification of Thevenin's theorem more accurate than that of Superposition theorem?

In my first course on Electrical Engineering, we have an experiment in the Electrical lab that asks us to verify the Thevenin theorem and the Superposition theorem and cross-check our results with our calculations on paper. Here are the circuit…
William R. Ebenezer
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Summing RMS values proof

I have a simple circuit with two sources of different frequencies. I was tasked to get a voltage output across a component. I know for a fact that adding the derived voltage of both sources acting independently will yield the peak voltage when both…
Arcadius
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What is wrong with this circuit analysis?

I have a super simple question about using superposition to solve this circuit and it looks like I am running into a misconception about why my analysis is wrong. I have attached a simple circuit with two voltage sources of equal magnitude in…
maxonezhou
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Why does Andy aka's calculation work in this case?

This question is from a confusion from this thread. Assume that you have the opamp circuit shown below. Also assume that the opamp is ideal and you don't know the value of R1, R2, R3, R4. Now you do two measurements: Apply a voltage 1V between Vp…
emnha
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Will a resistor connected in parallel with a high-pass filter affect the filter cut-off freq?

I have a circuit that adds a DC offset to an AC signal. From what I know, C1 and R2 form a high-pass filter. Since the input signal frequency is 50Hz, I would like to reduce the cut-off frequency of the filter as much as possible. Ceramic capacitors…
Hassaan
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Intuition behind the superposition theorem

Consider a circuit with only batteries and resistors. Suppose we choose a resistor at random. Then to find the amount of current through this resistor, we can do it by finding the contribution of each individual battery to the current through this…
Reine Abstraktion
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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 we consider the voltage across, points a & b, we will be…
Aravindh Vasu
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RF mixer theory and short circuits

Suppose I have the following RF mixer circuit- How does placing two AC voltages of differing magnitude and frequency directly in contact with one another not create a short circuit condition in a circuit like this? By short circuit condition, I…
user468756
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Using the superposition theorem to solve for the output voltage

I'm working on diodes again and thought I'd challenge myself to hopefully learn a bit more. I've tried solving this problem before, but the superposition theorem didn't come to mind then, but I think it'll be a good approach in this case. Either…
Tanamas
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Superposition in state space equation with multiple harmonics in the inputs

I have a question related to the superposition in state space equation. Suppose I have a state space equation below \begin{equation} \frac{d}{dt}X = AX + B\begin{bmatrix} u_1(t)\\ u_2(t) \\ \end{bmatrix} \end{equation} where X is the state vector,…
Fei Pan
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Apply superposition principle to compute current in the 2 Ω resistor

So in this question what I tried to do was first remove the 6A source and then try to apply the current divider rule according to which the current I = 24 x (4/12) = 8A and then remove the 24A source and then again try to apply the current divider…
Elliot
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Finding missing current and voltage in a circuit involving superposition

We are given a black box that contains only linear circuit elements and a pair of ports. We conduct the following two experiments with this black box. With the right port open, we applied V1 = 2V to the left port and measured I1 = 4mA and V2 = 8V.…
singularity
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Method for measuring power flow in a distribution network

Considering a mostly meshed distribution network (with some radial spurs) connecting zone substations (loads) to grid exit points (GXPs or sources). I am attempting to find the proportion of the network each loads utilises i.e. what proportion of…
Mr. Anderson
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