Electrical Engineering: Ch 8: RC & RL Circuits (35 of 65) Step Response of an RL Circuit
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- เผยแพร่เมื่อ 12 พ.ย. 2017
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In this video I will find the current=? of the step response of an RL circuit.
Next video in this series can be seen at: • Electrical Engineering...
Is it just me or sir's face is just so relaxing that I can feel that I can pass all my EE exams after watching his tutorials? >.
Such a classic Beizen!! Superb my friend.
I have done well on E.E. exams because of your videos! Thank you! Keep up the amazing content! 👌
That is great to read. Keep it up.
You are one of the best teacher on TH-cam
GOD BLESS YOU SIR
i'm student from Taiwan. I like your teahing a lot and thank you for safing my electric circut.
Glad you found us. Welcome to the channel! (My wife is from Taiwan as well).
The current will increase after a short while from closing the circuit and hence (it) =Ke-t/tau . But Sir thats the equation of exponential decay.
I didnt understand ur statement "the natural way in which things increase naturally is by the eqn (it) =Ke-t/tau . At time 1:37
Thank You Sir...Well explained!
Most welcome! 🙂
so touching for an excellent video
Glad you enjoyed it
What if the switch switch have been closed for long period of time and electricity have been flowing trough inductor for long time, but then we switch the position of the switch so that the current travels trough a lower valued resistor but still trough inductor will the inductor discharge or what?
Inductors don't "discharge", but capacitors do. Inductors oppose a change in current.
Thank you
You're welcome
Sir as you said at 0:41 that as we closes the switch then there is no current in the circuit then why at t=0 current becomes Io ?
Since before t = 0 (at t = 0 - epsilon) where epsilon ----> 0, there is no current as soon as we flip the switch, the current doesn't increase instantaneously, but will increase over time. Thus at t = 0, the current is the same as at the moment before closing the switch.
Thank you so much for your teaching sir, and please upload the video for concept of control system.
Hello, I am confused between the step response and the complete response because they almost have the same formulas. May I ask how do they differ? Thank you!!!
In a step response the applied voltage changes suddenly form one constant value to another constant value. In a complete response the input to the circuit can change in a variety of ways..
@@MichelvanBiezen Thank youu!!!
I could not understand how is michel saying that total current= trans current +steady state current. By this way the total current have exceeded the maximum value (V/R).Isn't (V/R) the maximum current possible?
Plug in different values for t and see what happens. Let t = 0 and let t = Tau and let t approach infinity.
@@MichelvanBiezen so Io is zero right? Ok i got it thanks.
Why current increase gradually in rl circuit? If switch is closed there is no current flow in circuit so how current Is gradually Increase when applied voltages as switch is closed
The inductor opposes a CHANGE in the current, which is why the current increases gradually instead of instantaneously.
If you teaching control system subject to most of the indian students will clearing the GATE examination. So please teach on control system sir.......
Why i couldn't find your Rc circuit. All of them is RL circuit
because RL circuits are the best
Why current changes if we have constant voltages source .
Because the current doesn't reach its final value instantaneously. The inductor only allows a gradual change.
@@MichelvanBiezen sir this mean .suppose we have resistive circuit with dc source and having switch in series and it is open at t=0 just after we closed the switch. so current not instantaneously build up equal to v/r but it increase gradullay and obviously its take's micro seconds . now we conect resistor with inductor in series and inductor increase time for reaching maximum current and it follow exponental curve
i will be so thank full sir if u answer my question
Yes, with the inductor, the time that steady state current (or final current) is reached will be longer.
amazing
Glad you think so! 🙂
The way you explained it is fantastic sir, I will continue watching what I am stuck with . Thank you
Great. If you work through the videos systematically you will learn this material well.
Which book are you following as a screeplay?
It was a book that one of my sons used when he went to college. (I can't remember the title)
@@MichelvanBiezen if the voltage source was changed by a current source.. the analisys still be the same?
1:44 isnt that equation used for decaying? can someone please clarify?
Currents rise and fall in circuits in the same way bacteria populations rise in the petri dish. That is how it is in nature.
@@MichelvanBiezen thank you for replying quickly!
@@MichelvanBiezen i have another query. what if we used the other equation instead of this one? would that cause any problem?
Not sure what you mean by "the other equation".
@@MichelvanBiezen the equation that i am referring to is i(t) = isub0(1-e^(t/tau)) [the equation that is used for charging]