Sir you are saving us from behind the oceans. I live in an another continent and your videos have become to me simply indispensable. Thank you so much. I only wish that you continue the advanced mechanics series with lagrangian, hamiltonian mechanics and so forth in the near future. Thanks.
I have seen so many confusing solutions on the Internet which made me unsatisfied. I checked on youtube and your video popped up. After watching your clear explanation. My heart and soul was praying for you. You just made my day. Thank you so much ! Vielen Dank
2 mins into the video and I finally understood what I have been looking for in the past hours. Thank you Sir, as always ! This channel is probably my best friend in E.E.E !
Thank you so much Prof I've been trying to do calculations on the same exact cascaded amplifier but I couldn't ,even after looking at the memo but by watching your video now I can do this. thank you so much.
SIr, It is confusing as you have a Resistor R2 in the first OP AMP whose value is 10kohm, and then re-use variable name R2 in second OP AMP but this time it is 50kohm in order that (Rf / R2) is = to 1. I think it would be helpful to re-name the second R2 something like R3 or better yet Runitygainhelper to illustrate its purpose. Other than that stumbling block, I found it great.
Using the "un-tuned" Difference Amplifier from Lecture 15, looks like one could choose Rf/R1 = 5 (to get the "-5 V1" term), and then set R3/R4 = 1 (to get the "+2 V2" term)
Not to be picky here but by only drawing two peaks in your resistor symbols, you're actually drawing the symbol for a solenoid. Resistor symbols should show 4 or 6 peaks to differentiate it from a solenoid. Alternatively, you can draw resistors as rectangles.
Is there a science to picking the scale of the resistors. For example I would expect you to use 50K ohm but why not 5K or 500. I assume you want to keep the impedance high to minimize the current levels.
What is the main purpose of the feedback resistor? I know it controls the output voltage, but what does it do, or how does it apply in a real world example?
Why wouldn’t you just use a non inverting op amp into an inverting op amp? Just make sure the gain ratio of the non inverting one is = 2 (A=1+Rf/R2) A=1+2, Vo= 3vi. Then feed that into an inverting op amp with a ratio of 5. A=-Rf/R1, A=-5.
please sir i want to read for these operational amplifier circuit design .sir i need a text book that will direct me from the introduction to the design of circuit . thanks for your assistance
Design an op-amp circuit using IC741 to give ~ + 15 V for Vin< + 1V and ~ - 15 V for Vin > +1V. Can anyone pls solve this for me. It will come in my exams. This question.
Sir you are saving us from behind the oceans. I live in an another continent and your videos have become to me simply indispensable. Thank you so much.
I only wish that you continue the advanced mechanics series with lagrangian, hamiltonian mechanics and so forth in the near future. Thanks.
Here is another thank you from Saudi Arabia
I have seen so many confusing solutions on the Internet which made me unsatisfied. I checked on youtube and your video popped up. After watching your clear explanation. My heart and soul was praying for you. You just made my day. Thank you so much !
Vielen Dank
You're welcome!
2 mins into the video and I finally understood what I have been looking for in the past hours. Thank you Sir, as always ! This channel is probably my best friend in E.E.E !
Glad it helped!
I have an intro to electrical engineering exam in 7 hours and I’ve finally understood how to answer these types of questions. Thank you so much!!
Glad it was helpful! All the best on your exam. 🙂
Thank you so much Prof I've been trying to do calculations on the same exact cascaded amplifier but I couldn't ,even after looking at the memo but by watching your video now I can do this. thank you so much.
SIr, It is confusing as you have a Resistor R2 in the first OP AMP whose value is 10kohm, and then re-use variable name R2 in second OP AMP but this time it is 50kohm in order that (Rf / R2) is = to 1. I think it would be helpful to re-name the second R2 something like R3 or better yet Runitygainhelper to illustrate its purpose. Other than that stumbling block, I found it great.
Found the right one! Thank you for making this videos about op-amp i understand now😊
I really enjoy your lectures, professor. What would be great is if you had problem sets with solutions.
That is something for the future. We are time constrained so we are concentrating on getting the lectures out.
beautiful !! thank you professor Michel
You are welcome. Glad you like the videos.
Good example with potential practical applications.
الف رحمه على والديك == thanks a lot
Thank you.
Using the "un-tuned" Difference Amplifier from Lecture 15, looks like one could choose Rf/R1 = 5 (to get the "-5 V1" term), and then set R3/R4 = 1 (to get the "+2 V2" term)
Nice Sir Love From India
Thank you. Welcome to the channel! 🙂
Can we do it by hooking up two non-inverting amplifier ends to a difference amplifier?
Yep, that's how I did it.
Thank you so much , you have made it easy
Glad it helped 🙂
Thank you very much sir ...
how about like, if 3V2 + 5V1 , what Op-Amp we used to implement "+" function. thanks!
Not to be picky here but by only drawing two peaks in your resistor symbols, you're actually drawing the symbol for a solenoid. Resistor symbols should show 4 or 6 peaks to differentiate it from a solenoid. Alternatively, you can draw resistors as rectangles.
So helpful!!
Glad you found our videos. 🙂
please make example design a circuit to implement an integrator Op-Amp. thank you sir
Could u tell me which reference book you took this problem from?
The book one of my kids used in college, the "Sadiku" book.
Sir, why we use inverting amplifier only?
Is there a science to picking the scale of the resistors. For example I would expect you to use 50K ohm but why not 5K or 500. I assume you want to keep the impedance high to minimize the current levels.
Youre a god. Thanks
Far from it. (Just ask my wife). But we appreciate the comment.
Thanks💓💓
thank you :D These videos are very helpful !
What is the main purpose of the feedback resistor? I know it controls the output voltage, but what does it do, or how does it apply in a real world example?
Those are just needed to make the op amps work.
رائع!
Glad you liked it.
thank you so much sir
Sir, why don't we use a difference amplifier with V1 as 5V and V2 as 3V with Rf and R1 as 10kohm each.
There are many combinations that will give you the same or similar result.
Why wouldn’t you just use a non inverting op amp into an inverting op amp? Just make sure the gain ratio of the non inverting one is = 2 (A=1+Rf/R2) A=1+2, Vo= 3vi. Then feed that into an inverting op amp with a ratio of 5. A=-Rf/R1, A=-5.
There are often multiple ways in which a circuit can be constructed.
To be equal to 3v2 - 5v1, R1= 50k .
it is? I await your reply.
Thank you sir! can you do lecture videos about semiconductors like diodes, zener diodes, rectifiers etc. Thank you and more power
We'll get to those topics in time. I am trying to cover all the topics for the first year on electrical engineering.
thanks!!
please sir i want to read for these operational amplifier circuit design .sir i need a text book that will direct me from the introduction to the design of circuit . thanks for your assistance
Instructions unclear R2 defined two times and my opamp gain is infinite now
Thank you
THANK YOU SO MUCHHHH
Thanks
Welcome
👍👍👍👍
Glad you liked it.
Please, tell me someone. Which is the reference book of this lecture?
"Fundamentals of Electric Circuits" Charles K. Alexander, Matthew N.O. Sadiku
sir ı have question about the OPAMP circuit design can ı take your mail please???
We respond to questions on the comment sections of our videos as time permits
Design an op-amp circuit using IC741 to give ~ + 15 V for Vin< + 1V and ~ - 15 V for Vin > +1V. Can anyone pls solve this for me. It will come in my exams. This question.
thank you sir.
Most welcome