Questions tagged [step-response]
For questions about the step response of an electrical system, which is the response of the system in the time domain to a unit step function input. Important characteristics of the step response include rise/fall time, overshoot, ringing, and settling time. Consider using in conjunction with related tags such as "rise-time", "control-theory", etc., if applicable.
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How can current still exists as t approaches infinity in RL circuit
The textbook solution for \$b)\ (\ i_{o}(t),t\geq 0\ ) \$ is $$\ 1.25e^{-1500t}-1.25A,$$
but as \$t\$ approaches infinity, the current will be \$-1.25A \$ for \$i_{o} \$.
How can this be possible, ...
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RL parallel circuit
This problem is available on MIT coursware assignements 9.
Knowing that I(t)=4-10u(t) mA; R=1 kOhm; L=1 mH
I want to find:
a)IL(t=3.00E-06 s)
b)V( t=3.57E-07 s)
c)IR(t=1.90E-06 s)
V is the voltage at ...
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In a bandpass filter, when a square wave is applied into the input, why is the output a sine wave?
So I have designed a second order resonant bandpass filter with a center frequency of 320 Hz and a peak gain of 10. It works perfectly fine, however, I am just wondering why when the input is a square ...
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Why is step response of an opamp linear/exponential?
My step response for LM741 at LTSpice was this:
And for TL081:
So as you can see the response of LM741 is linear and of TL081 is exponential, but why? My schematic is an inverting amplifier with v=...
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NE555 pulse extender for PIN photodiode radiation detector is it fast enough? And more
I've designed a circuit using a PIN photodiode for a radiation detector aimed at identifying radium in an old watch. However, I'm uncertain about its effectiveness, particularly regarding the speed of ...
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Damping gets better, but overshoot increases. How can I explain it?
I have three transfer functions as below
The pole-zero plot and the step response of the transfer functions are given as
It makes sense to me that G3 has a better damping than G2 and G2 has a better ...
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How does this work? Finding final voltage of capacitor in a RC circuit step response problem
There is a circuit with a switch which was in position 1 for a long time and is now in position 2. I attached a picture of the given circuit below.
Once in position 2 I need to find the final voltage ...
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Why can I ignore this part of the circuit during step response analysis?
I'm doing a RL step response analysis problem and I am confused on why we are able to only consider the left side of the circuit when the switch moves from position a to position b.
"The switch ...
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Help for RL step response
Here is the question I am trying to solve:
I didn't find Vo(t). What way should I go to find this value? ( Vo(t) is a voltage on 40k resistance after switch moves b.)
Here is my attempt: ( It looks ...
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Need help to find step response of RL circuits
Here is the question I am trying to solve:
I drew my solution with calculations on paper. Before the key is closed, I calculated İ0 and then after the key is closed, I calculated the last current (I∞)...
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Derivative of a waveform
I am self studying linear circuits and I came to a very basic problem.
The problem:
$$y(t) = e^{-t} u(t)$$
where \$u(t)\$ is the step function.
Calculate the derivative of \$y(t)^{\prime}\$.
My take ...
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Unexpected output from LC circuit
I am trying to get back into some electrical engineering basics, and had a quick question regarding an unexpected output I am seeing. I am trying to learn about RLC circuits again, and wanted to build ...
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What is the correct way of replacing the value of a step voltage source in Laplace?
I'll be presenting two ways to reach the same answer. I would like to hear which way is the correct way to get there. I am not interested in the result, it's the same in both cases, I'm interested in ...
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How to implement PWL or step function in CircuitLab?
I tried to implement a simple PWL (Piece Wise Linear) function in CircuitLab, and it does not seem to work. It differs slightly from LTspice, which I know how to use. The data points are in CSV (Comma ...
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How to prove property of transfer function for causal LTI system
For causal linear time-invariant systems the degree of denominator must be larger or equal than the degree of the numerator.
How can this be proven rigorously?
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