Questions tagged [steady-state]

The state of a circuit after all transients (e.g. supply voltage ramp, load transient, etc.) no longer have a significant effect on the circuit operation.

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Transient analysis for circuits with AC excitation using differential equations

In the process of finding transient response for circuits with AC excitation using differential equations, we use the method of complementary functions and particular solution, but I read earlier that ...
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Difference between Harmonic Balance and Transient solver in ADS

I am performing a simulation of a half wave rectifier (HWR) in ADS. I had developed a MATLAB code for Harmonic balance solver and Transient solver in MATLAB. The code gives comparable results when ...
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Laplace analysis of coupled circuit confusion

So i solved this by first finding differential equations and then by taking laplace transform of them here are my working- for left loop $$5i_{1}\left( t\right) +4.9\dfrac{d}{dt}i_{1}\left( t\right) -...
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Can a system get immediately to the sinusoidal steady state?

Suppose we have a theoretical LTI causal system with zero initial conditions and we apply a sinusoidal input at t=0. If the system is initially at rest, will the output be equal to H(ω)cos(ωt+Arg(H(w))...
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How to analyze first-order transient circuits using Simulink?

I have been trying to design a first-order circuit with a capacitor but, I could't achieve to initaliaze the steady-state condition. I mean I was not able to close the switch at t = 0. Since, I am ...
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How to guarantee steady state conditions on boost converter

I am teaching myself about boost converters, and I understand the operating principles- to a point. Specifically, I understand what happens to the conductor during the switch-closed portion of the ...
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Jump in RC current response to a square wave

Periodic square wave feeding an RC circuit: I am currently studying RC filter response to a square wave input with a period of \$ T_1 + T_2 \$. I have understood about voltage expressions and current ...
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Are impedance calculations only specific to sinusoidal inputs?

All impedance formulae we've derived in my course and calculations e.g. combined impedances in series have all assumed sinusoidal steady state. My question is, does the notion of "impedance" ...
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error in dimension for adder in negative feedback loop

im a universiity student i was trying to model this state space with simulink i tried to use the state block but got the same error i think i need to use mux i already checked the dimensions for A B C ...
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Velocity control system is stable even though CLTF has a pole at s=0?

I was reading about steady error calculation for system with H(s) having Nth order Zero at s=0. In book it is written that steady error calculation is meaningless when closed loop transfer function(...
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How to find the v(t)?

can someone help me in here. Find the V(t) when t = 2,5ms and knowing that i(t) = Icos(wt). R= 50ohms, L=100mH, I=2A, w=100π rad/s Like I know that Z = 50 + j10π = 59,05∠32,14° And v(t) = Z*i(t) = 59,...
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Is it possible to change the reference clock in a cpu while it is running

I understand that PLLs have a settling time but if I were to do a hardware modification that changes Vco of a reference clock to scale based on temperature of my CPU, would I be able to do so while ...
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Lithium ion battery pack busbar thermal calculation

I am designing busbars for lithium-ion battery pack which is 14-series, 9-parallel combination. We have taken busbars sizes as per the industry standard current density 3A/mm2. (Total current 48 A, ...
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Steady state current in circuit containing dependent source

I was solving a question and got confused about steady state current in circuit (image), in solution it is given that steady state current across inductor will be zero as all the initial current of ...
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steady state voltage in capacitor network

simulate this circuit – Schematic created using CircuitLab I have this capacitance network in my circuit and I can't figure out the math behind why the final steady-state value of Vx=0.542v when ...
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Transient and steady state of marginally stable system

I know that if a system is asymptotically stable then after infinite time its output contains only characteristic of input signal and it is also known as steady state and there are no transient ...
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What are the exact meanings of reactive and apparent powers? Do we say they are supplied or consumed?

(The following doubt is from the topic of Sinusoidal Steady-State Analysis of electrical circuits) I understand the meaning of real power - it is the average power consumed (or delivered) by an ...
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Sinusoidal steady-state analysis

Find the Transfer function of the given circuit in the frequency domain.The problem here is that the equations of this circuit become complicated by finding equal Z of R,C,L (right side of the circuit)...
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What happens to the steady state of the series RC circuit if changes happen to any circuit element?

The question that I'm trying to understand is the following: In any series RC circuit that is in steady state, WHEN any of the elements changes (R, C, or applied voltage), the following will happen ...
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Find v1=? and v2=? for the circuit

This is my solution,but i have a problem with doing a node analysis for node 2 and 3.In my textbook the solution is like this: (2+i1+i1)V1 -2VO -i1V2=0 and(1-i2+i1)V2-i1V1=5
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Control System how to get rid of Steady-State Error For Ramp Input

I am supposed to get rid of the steady-state error for ramp input for this closed loop transfer function Transfer Function of Closed Loop ^ T(s) Closed Loop ^ Since the closed loop is equivilant to ...
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2 mesh circuit giving me trouble. (steady-stade, mesh current method, dependent current source)

The task is to find Ic in phasor form. The circuit is in steady sinusoidal state. I used mesh current analysis and I got to that: I have no idea how to keep ...
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Laplace Transforms and the imaginary input

When we get an exponential on the RHS of our differential equation (or if we give an exponential input) it's quite easy to solve the equation, but if we provide a sinsusoidal or cosinusoidal input, ...
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4 answers
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Is the frequency response of a circuit only valid for steady state (phasors)?

This is my first post. I just finished a course about advanced circuit analysis techniques (the content was taken from textbooks by Sadiku, Hayt and Irwin.) As you know, phasors are used to solve ...
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Steady error control system sinusoidal disturbance

Consider the control system closed-loop represented such a block diagram below: Given that: \$G_C(s) = K\$ and \$G(s) = 1/s\$ a) Determine the values of \$ K\$ which the closed-system loop is stable....
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Finding voltage across inductor in steady state

I am uncertain about the voltage drop I got across the inductor because of its extremely small magnitude compared to the voltage source. Was my procedure correct or were there any flaws in my ...
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General expression for non-unity gain feedback system's steady state error with disturbance

Thanks in advance for having a look. I finally have some time on my hands to go back through my controls systems text and I want to understand how the general expression is derived; rather than just ...
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Steady state error due to disturbance

I was trying to solve a question from the 2004 GATE IN paper, I solved it this way, Now, the book is giving a different solution, I'm pretty sure my way is correct since they pulled the "standard ...
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Do resistors consume reactive power?

I encountered this problem in one of my books where the problem asked to find the power loss in the core of an induction motor. I worked through the problem and I found the current as in the picture, ...
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semiconductor equilibrium and steady state

Why should equilibrium imply steady state? For example, there is a process whose rate increases with time and this process can be exactly balanced by an inverse process whose rate also increases with ...
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Mesh Current Method Circuit Analysis For AC Transient and Steady State Solution of RL Circuit

Hi everyone, I'm trying to find the currents through each branch for the above circuit using mesh current method (as I don't really know how else to do it), and end up with two simultaneous ...
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Transfer function for a Passive Second order Low-pass Filter and to determine the components values

I am working on an assignment about Passive, second order low-pass filters. Cool little things if you get to know them. We are given the placements of the passive components (Inductor(L1), ...
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How do I shine an LED when a PIR detects movement but keep it shining until a reset button is pressed?

It's easy even for a beginner like myself to create a PCB where an LED lights up if a PIR chip detects movement, then goes off when movement is no longer detected. And if more movement is detected, ...
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PID control achieves zero steady state error with step set points and disturbances?

How can I explain this with proper reasoning? I'm also having doubt understanding why a proportional controller cannot eliminate SSE and how a PI controller eliminates it.
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How to find v(infinity)? help please

Can someone help finding V(infinity). Ive gotten V(0+) at 93 V. the second circuit i got is attacked below. Thanks!
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Nodal analysis on this sort of circuit

I'm reviewing nodal analysis on sinusoidal steady state circuits which my textbook typically only does mesh analysis on and I can't seem to get to the answer they obtained for an example problem. ...
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4 answers
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Steady state response

Could you explain me please what does this question exactly want me to find? Or, how should I start solving ?
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3 answers
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Solving for steady state voltages (Op-Amp)

simulate this circuit – Schematic created using CircuitLab so I have this Op-Amp problem. I need to find for the values of V1, V2 and Vout for t > 0. I have this solution but I'm not sure if I ...
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Frequency response of an input with a phase (steady state)

I know that, at steady state, the frequency response can be calculated relatively easily from the transfer function and the frequency of the input. So if we have a system described by the transfer ...
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Solve the question and give the explanation

I did understand the first part of the question where current is supposed to be 1 A. However I'm in a fix over the second part whether or not to take the resistors in parallel or series. Could someone ...
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1 answer
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Steady State Error of Control System

I have a question regarding a control loop system which is subject to disturbance, unfortunately I missed a couple of lectures on the subject and now am scratching my head as to how to do it. The loop ...
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Time constant of first order system

I am new to this site, so please bear with me. here is plot of the step response of first order system given Now, the question is to find time constant as well as DC gain so I can find it's transfer ...
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Estimate the value of an inductor by its steady state response

I have the following circuit: simulate this circuit – Schematic created using CircuitLab The duty cycle of each sw is 50% and the frequency is 160kHz, at steady state I end with the following ...
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Finding L and R in AC circuit

Ammeter readings: A1 = 4A A2 = 2A A3 = 3A Voltmeter reading 24V. Circuit is in AC. I have to find R1,R2 and L. While calculating R1 (R1 = 24V/2A= 12 Ohm) seems to be easy, next steps are not ...
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Power absorbed by a resistor in a crossed circuit

The given problem above is asking for the power absorbed by the resistor R given R = 1 Ohm. According to my professor, the two inductors do not cross so I redrew the circuit into the one shown in the ...
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LC circuit + diode problem ! (without resistors)

[![][2]][2] What will be steady state capacitor voltage? My hit at the solution: The static resistance of the diodes come into action causing a large current to flow across the diodes ( assuming ...
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6 answers
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Step-by-step explanation of how voltage follower reaches steady state using negative feedback

Just one minute! I am not trying to understand what negative feedback does eventually, or why it should be used. I am trying to understand how the circuit reaches steady state, and how, step by step, ...
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AC steady state circuit analysis using mesh

I have attempted multiple tries into this circuit problem and I am getting no where. For this question I have to use mesh analysis to find \$V_x\$. \$V_x\$ is across the right branch containing the 3 ...
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How does a negative feedback amplifier reach steady state?

I tried to simulate a negative feedback non-inverting op-amp, and got incorrect results. I ran the following time-stepping code in python: ...
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Periodic Steady State voltage Buck Converter

What does Periodic Steady state mean with regard to a Buck Converter ? Does it mean the normal operation ? Also, From what I read, the net change in the capacitor voltage in the buck converter is 0....
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