Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [analysis]

Questions attempting to analyze the mathematical properties of a formula, the inner workings of a protocol, or the design of a given circuit.

Questions attempting to analyze the mathematical properties of a formula, the inner workings of a protocol, or the design of a given circuit.

Mathematical analysis is the part of mathematics concerned with the theory of functions and the use of limits, continuity, and the operations of calculus.

Engineering analysis involves the application of scientific analytic principles and processes to reveal the properties and state of the system, device or mechanism under study

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Puzzled by Nyquist frequency

Say I have a 1kHz sine, so no higher harmonics, then I need to sample it at least at 2kHz to be able to reconstruct it. But if I sample at 2kHz, but all my samples are on the zero-crossing, then my sampled signal doesn't show a sine at all, rather…
Federico Russo
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Will this mains disconnect circuit work?

The purpose of this circuit is to disconnect a home wiring from the grid when there is a power failure without having the power contactor coil working 24/7. Where I live, when the power is restored after a failure, there is always a voltage peak…
user316780
6
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6 answers

Reading a circuit

Disclaimer: I am a beginner. I am reading a knol book on electronics, and I am faced with this schematics: How do I read a circuit to understand what it does ? Do I have to imagine the electrons flowing, or is there a better strategy ? Another…
Stefano Borini
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Calculating an R-RC circuit

This is not homework. I have this circuit, and I want to calculate V2. I know it is equal to V1 at t=0, and equal to \$V1 \cdot \frac{R2}{R1+R2}\$ at t=\$\infty\$, but I don't know how to calculate the charging of the capacitor. All I find on…
Federico Russo
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How to calculate equivalent resistance?

This is not homework. Imagine an infinite resistor grid which the picture shows a part of. The question is what's the resistance measured across any of the 1k\$\Omega\$ resistors. I don't want you to tell me the answer, I already know. I want to…
Federico Russo
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Nodal analysis - how to handle two adjacent supernodes

I'm a first year engineering student who has a problem with harder nodal analysis problems. Consider the circuit in the attached image. The usual way to deal with the voltage sources in the upper left branch is to make a supernode. However, one of…
Joshua Schroijen
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How to change the frequency of AC supply?

Im using an inverter to convert Dc into Ac from battery. I want to control the frequency of the alternating current ie., increase and decrease gradually (eg: 1Hz 2Hz 3Hz... 60 Hz). Is it possible to control the frequency?
Manikandan Balasubramanian
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How to use nodal analysis in resistive circuits

I am trying to solve a question in a text book of resistive circuit using KVL. The circuit is as follows : I have to calculate the voltage through each resistor. What I have got is: V1 = 24V V2 = 18V V3 = 18V I1 = -3A I2 = 3A The actual values…
Abdul Zahid
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Nodal Analysis of an electrical circuit

I have several doubts about solving circuits. Can any circuit be solved using Nodal Analysis? If some circuit can be solved using Nodal Analysis, can it be solved using Mesh Analysis too? Why do we need these techniques to solve circuits?
Fazlan
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applying nodal inspection technique to supernodes with dependent sources

I was about to apply nodal analysis via inspection (to make it faster) to the above circuit, yet as we can see, it has a dependent source. So listing the equations for node(1 and 2) supernode a: $$v_1(\frac{1}{2} + \frac{1}{6}) + v_2(\frac{1}{4})…
vvavepacket
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Superposition Theorem/Nodal Analysis

I'm having a little trouble understanding this worked solution. My understanding of superposition is that we "turn off" every independent power source except the one we plan on analysing, then we superimpose all the individual results to get the…
sebajun
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Can you explain how this NDT ultrasonic transmitter circuit works?

I am simulating the circuit shown below. I do not understand how this works and how this will help in generating high voltage pulses for NDT ultrasonic testing.
Murugesh
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Negative voltage in Mesh Current Analysis

I am trying to learn about Mesh Current Analysis and have a question I was reading this explanation on the subject from electronics-tutorials.ws: http://www.electronics-tutorials.ws/dccircuits/dcp_5.html and one of the equations is \$-20 = -40I_1 +…
DNN
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RC Circuit with Multiple Capacitors

I have been working on this problem and it is driving me absolutely crazy. The questions is asking for Vo for time greater than or equal to 0. I have successfully redrawn the circuit (shown below) to represent steady state or t = (0-). This gives me…
atomSmasher
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Is there a way to solve this circuit using Nodal Analysis?

Please, take a loot at this circuit: Obviously, this is a circuit that is very easy to solve using lots of different methods. However, I'm trying to solve it using Nodal Analysis (I'm not sure if it's possible). I tried to use node B as reference.…
felipeek
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