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Electrical Engineering Made Intuitive
United States
Registrace 21. 09. 2018
Active Filters
Why do we need active filters and how to analyze circuits that include active components (i.e. Op-Amps).
zhlédnutí: 2 767
Video
Second-Order Passive Low-Pass and High-Pass Filters
zhlédnutí 5KPřed rokem
A simple technique to achieve better-performing Low-Pass and High-Pass filter is described through increasing the filter order with little complexity.
Second Order Band-Pass and Band-Reject Filters
zhlédnutí 1,4KPřed rokem
RLC Band-Pass and Band-Pass filters are introduced and their characteristics are analyzed.
First Order Low-Pass and High-Pass Filters
zhlédnutí 1,9KPřed rokem
First order filters are discussed and metrics to characterize them are introduced.
Passive Filters
zhlédnutí 1,1KPřed rokem
The concept of frequency selective circuits (filters) is introduced.
Circuit Transfer Function: Definition and Calculation
zhlédnutí 550Před rokem
We we discuss the definition of transfer function in Laplace domain and demonstrate methods to calculate it.
The mighty "Buffer": The amplifier with unity gain!
zhlédnutí 1,3KPřed 2 lety
Why do we need an amplifier that doesn't actually amplify (gain=1)?
Impedance in Laplace Domain
zhlédnutí 1,4KPřed 2 lety
This lecture introduces the most general definition of impedance in the Laplace domain.
Basics of circuit analysis in Laplace domain
zhlédnutí 1,1KPřed 2 lety
The equations for R, L, and C are introduced in Laplace domain and the process of Laplace domain circuit analysis is described in detail.
Preview of circuit analysis using Laplace transform
zhlédnutí 983Před 2 lety
The process of using Laplace transform in circuit analysis is previewed in order to prepare for the associated math.
Introduction to Laplace Transform (Why and How?)
zhlédnutí 944Před 2 lety
We will discuss why we use Laplace transform in circuit analysis and how?
Analog Adder and Difference Amplifier
zhlédnutí 543Před 2 lety
We will analyze active adder and difference amplifiers based on Op. Amps
Inverting and Non-inverting Amplifiers
zhlédnutí 570Před 2 lety
We will analyze two useful amplifier configurations and develop the gain equation for both.
Introduction to Operational Amplifiers (Op. Amps)
zhlédnutí 827Před 2 lety
The equations that describe the functionality of operational amplifiers is discussed for the first time and analyzing circuits that include op. amp. is practiced.
Parallel RLC Circuit (Over Damped)
zhlédnutí 1,1KPřed 2 lety
In this video we will analyze an over-damped parallel RLC circuit.
Equations Describing Operation of BJT transistor-1
zhlédnutí 451Před 3 lety
Equations Describing Operation of BJT transistor-1
Equations describing typical MOS transistors
zhlédnutí 215Před 3 lety
Equations describing typical MOS transistors
Great presentation. Thank you. But what op-amp will I need for hf ?
Do you mean High Frequency?
Yes. I keep reading about how to build filters with coils/inductors for ham radio. But I want to use op amps so I can get some amplification. . But I don't know which ones to buy. I know that slew rate is important. What parameters in the datasheets should I be looking at ?
Great video!
I am happy you find it useful!
Thank you sir
Do you have this blok?
is it a second order circuit
Yes these are second-order circuits.
no sound\
can't hear anything
.
love it.
One of the purposes of use of an opAmp is now made it clear, well done. Thank you very much.
Are you writing everything backwards from your point of view? That’s impressive!
No, there is a software that mirrors what I do!
I know you're applying inverse Laplace, but I still got lost where the Ks came from... more over, if I had to know the values at a specific time, how will I solve those Ks?
You can calculate K's doing some simple math. Keep watching the following videos! 😃
man, you are criminally underrated:( Absolutely incredible explanation. Wishing you a lot of success
Hi! When you do the module of H(jw), wouldn't it be (1-LCw^2)^2 - R^2C^2w^2? Since we are doing j^2 = -1. Let me know if I am wrong.
No because I am not doing "j^2" for calculating the magnitude of a complex number. I just need to take the imaginary component which is RCW in this case, square it and add it to the square of the real part (this is the definition of magnitude that I have explained in the different video). Hope this helped.
Thanks
Shouldn't the last term in the equation be V_1/20 instead of V_1/45 (at 17:20)? Since the last term is equal to I_phi?
I_phi = V_1/20 and V_1= V_o/2.25 put the two together and you get I_phi=V_o/45
@electricalengineeringmadei1041 oh yes, thank you sir. You wrote V_1/45 in the equation but the V_1 is a typo, correct?
@@kinzarashid2277 yes it gets corrected later in the video.
@@electricalengineeringmadei1041 oh I see now. Thank you for posting these, I greatly appreciate your work.
@@kinzarashid2277 Where and what do you study (if you don't mind me asking)?
thank you so much. Sir. i will listen and use this video for my studies. thank you Sir.
I am happy I could help.
🐐
Awesome video! Your channel is underrated.
Thank you! I am happy you find it useful.
Do you have a video which explains almost all types of diodes?
باعث افتخارید استاد
Lotf Darin! 🙂 Are you studying Electrical Engineering?
Takes me back to HNC days. But I need to design a symetrical filter (will work both ways ) However the output and input impedances could be different which would have to be taken into account. This could probably mean the resistances would be different. Many thanks for the explanation.
thank you so much sir. where did you take that example ?
I know that the solution of a differential equation depends on its form. Does this differential equation (L di(t)/dt + Ri(t)/tau = Acos(wt)) have the same solution as the general one (dy(t)/dt + y(t)/tau = Acos(wt)) if there is a constant multiplied by the differential term (L*di(t)/dt)? Or does this constant indicate that the differential equation is not of the same form as the general one? Must we divide by L and take tau to be L/R so the equation becomes di(t)/dt + (R/L)i(t) = (A/L)cos(wt) so that the differential equation matches the general form? Or does this not work because now the amplitude becomes A/L instead of A, the given amplitude?
Sage, in order to use the general solution your equation should match the general equation and therefore, you have to device by L first. Does that make sense?
@@electricalengineeringmadei1041 yes! Thank you. So tau becomes L/R. Does that mean the amplitude is now A/L? Or does the amplitude remain A?
@@sagewagner3803 Your tau is L/R and the equivalent amplitude for the general equation becomes A/L. Now that you brought this up I think I should have used a different parameter for the amplitude of the input signal for it not to be confused with the amplitude in the general differential equation! Oh well... 🙂
@@electricalengineeringmadei1041 So A is the amplitude for the source while A/L is the amplitude for the signal at v1?
@@sagewagner3803 "A" is the amplitude of the input signal to the circuit and A/L is the amplitude of the input for the generalized equivalent differential equation. It is not the amplitude for any particular voltage in the circuit. You just use it as part of the procedure to do the math. DO you happen to be at UCF? I would be more than happy to meet and clear any doubts you may have if you are.
Hi sir, thanks for your helping us to get better marks. I have a question about the equations in time between 22:30-23:00. We said that i2=i3 and also i3=i4. From the first equation we get V2=-V3 but from the second one, we get 5V3=3V2. Is there something that i might have missed? Best regards.
I don't understand why you are saying from i2=i3 you conclude V2=-V3! Where is that coming from?
we said that i2=i3, at the same time 3is=i2. Am I wrong? From this point V2=i2 so we can say that V2=V2-V3/2 and this equation shows V2=-V3. thanks for responding.
I think i have a conceptual misunderstood. That 3is shows a potential term. I got it now, sorry 😅
The way you explain is very intutive, thanks, Would love to see a video on second order filters using rc cct
I am happy you could relate to my teaching method. I have a plan to add more in the near future.
@@electricalengineeringmadei1041 maybe add sound next time buddy
👍
I like this
This video series has been very helpful in my Linear Circuits course I'm currently taking. You are even using the exact same textbook as my Professor! Thank you for uploading these.
Corey, I am happy I have been of help. Please spread the work amongst your friends as I am planning to do more videos on other electrical engineering topics in the future.
🙏namaste from India, this series of lecture from your channel are gems. Thanks for making such excellent videos.
Thank you Ashish! I am happy you have found this material useful. Please let your friends know if you get a chance.
hello professor , at 17:34 I couldn't quite understand that V1=Vi . I would be happy if you answer.
The two input terminals of an ideal op-amp follow each other (when there is a negative feedback which is the case here). Watch the video on ideal op-amps and I explain that in detail.
great video thank you
I am happy it was helpful!
Thank you!
You are very welcome! :)
Thank you !!!!
hello professor, I have a question on labeling circuits how do we choose the direction of the currents and how do we decide the positive- negative parts of the voltages and currents This problem has been messing with my head and I couldnt find an explanation that I can grasp well. Thank you for nice lectures .
Dilara, I suggest that you watch the lectures in which I explain the universal circuit analysis method. But to quickly answer your question, the direction of current is completely arbitrary.
I watched every lecture of yours before this one . Thank you for responding:)
You can continue with you a very necessary theme
Can't hear anything dude
I just tested the video. I don't see any problem with the sound!
@@electricalengineeringmadei1041 i increased playback speed maybe that's why
excelent !!! wish you the best with your channel ⭐⭐⭐⭐⭐
Thank you! Are you an engineering student? where do you study?
Thanks for working out the formula to finding the impedence formula in S-Domain. This really clarified any questions and doubts I had. 👍
Glad it was helpful!
mamnoon :)
khahesh! ;)
Just a side note: Classes in school are always exclusively a subject. Just math or just physics. What students need is something that is like a Math/physics class, because after we study just math for a semester, then the next semester just physics, we can't remember all of the math that goes along with the physics so we never see the important connections, of using our math skills to solve real problems. If it was mixed we would learn both of them, because we used all of our skills. I assume you are a professor, so if you agree with me maybe you can pass it down the line. I'm not sure if it is your intention, but watching these videos is what I've needed in an algebra class my whole time in college. Algebra class never took it this far or made it this real and applicable. With these videos I feel like I'm getting two things done at once. I see you simplify things, and sometimes you skip a lot of algebraic steps, but it's what I needed to make those skills solid. When I get stuck on your steps I stop the video and figure it out. Plus I'm learning circuits. Sorry for the long message, but I hope one day schools start to mix classes. I don't know if that's your intention but it's perfectly what I needed. Thanks.
I totally agree with you Jarad! I would teach electrical engineers a class entitled "Math for Electrical Engineers" or something like that if it was up to me!
correction: iL(0)=24mA+A1+A2=0
For I(2) I was a little confused. You got conductance for I(2) over conductance for I(3) and I (4)? But the conductance for I(2) is the resistance of I(3) and I(4)? Then total conductance was the added resistance? Does that mean when resisters are parallel that the conductance of the first one is the resistance of the other? If not, I don’t know why you used all resistance values as conductance. Thanks
The formula I used is called current divider for parallel resistors. I discuss that in an earlier video and you can watch that one to understand where it is coming from. Generally speaking I don't suggest using such formulas if you are not comfortable.
@@electricalengineeringmadei1041 figured it out.
Hello, there is one thing I am confused about in this video. You are using kilo ohms, but would it make a difference if you used ohms? Is it the same because it's always a ratio multiplied by Vs?
You are correct Jared, since we are dealing with ratios of resistors, it doesn't matter if you use kilo Ohm or Ohm. Even if you deal with actual values, you can still keep using kilo ohms and Volts, and all the currents end up being in mA as opposed to Amps.
@@electricalengineeringmadei1041 thank you
@@electricalengineeringmadei1041 was wondering if you knew of any good linear algebra videos off the top of your head? Setting these up into a system of linear equations, is the thing that’s most foreign to me, at the moment.
I assume by the end of all the lectures we will understand how you draw in the air.
😀It is pretty cool isn't it?! Hope you enjoy the content too! 😜
That was a great explanation of where light comes from. I watch all your videos but thought that was remarkable.
I am happy that the videos are helping you. Can I ask where you are?
@@electricalengineeringmadei1041 Sure, I'm in Rhode Island. I'm taking Linear Circuit Theory in the fall, and with these videos I'll be able to hit the ground running when classes start. Is there a book that has these problems or a book that you recommend?
@@jaraddemarco7664 The book is Electric Circuits, by J.W. Nilsson and S.A. Riedel, 11th edition, Generally I don't use the techniques that are taught in most books and prefer to use what I call universal method (Lectures 3-1 and 3-2). I continue to use the same technique for all circuits at all times.
@@electricalengineeringmadei1041 That's good to hear because the approach is easy to follow. I'd just like the book so I don't have to draw out every circuit.
@@electricalengineeringmadei1041 I just have one more question, about how you said your method is unconventional and not in the book. Is your method still the general idea of the class? I guess my main question, is will your videos help me when I start the class?
v1(t) = (9000000te^-10000t)u(t)
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I was waiting this video for a long time :) thank you sir
have u a video about ideal and linear transformers ? thanks for clear explanation also :)
Ugur, I don't have that yet but I will make a note of your request and prepare one in the future. Can I ask where you are studying?
@@electricalengineeringmadei1041 In Turkey sir. Thank you so much
@@electricalengineeringmadei1041 You can continue with you a very necessary theme