#75: Basics of Opamp circuits - a tutorial on how to understand most opamp circuits
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- Опубликовано: 25 янв 2013
- This tutorial discusses some general rules of thumb that make it easy to understand and analyze the operation of most opamp circuits. It presents some ideal properties of opamps, and discusses how negative feedback generally causes the input voltage difference to be equal to zero (input voltages are made equal by the action of negative feedback). In other words, the output will do whatever it can to make the input voltages equal. Applying this simple fact makes it easy to analyze most opamp circuits. A copy of the drawings can be found here:
www.qsl.net/w/w2aew//youtube/B... 
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I have been in the electronics industry for 50 years and that has to be one of the best tutorials I have seen.
Keep up the great work.
You explained what my ECE professor couldn't in over a week of classes in 13 minutes. Thank you.
pass this video along to your classmates!
@@w2aew I definitely will! Thanks again!
2 wks of listening to my professor- didnt understand
6 minutes of watching this- everything clicks in my brain.
Played at the speed of X2, XD!!
Adam I Ii
Adam I ..... Isn’t that the way learning seems to take place. I too experienced the same feeling from my days (waaaaaay) back in school. I just did not understand why my teachers couldn’t have taught in this way. Even alot of books are hard to learn from because of this......I guess shit happens ....
because you are out of focus in class
yea sometimes i wonder , are these college professors really interested in teaching because so many never bother to boil things down into simple form which i thought was the art of teaching. wtf. if they are not capable of doing this then maybe they shouldnt be teachers.
I have watched a lot of instructional videos which use a technique that you also use and I often add my comment " Please use a tripod". My reasoning is mostly to keep me from becoming dizzy or sea sick. I however complement you on a quite steady hand held camera not producing nausea therefore allowing me to focus on your superb, clear, informative content. Thanks for your well done videos. I always learn from you whether or not I am viewing a topic that I think I already know. Another of your 'characteristics' that I appreciate is that you do not waste words using extraneous babble that distracts from the topic. THANKS again. Many of those other videos I can't return to for more information but I come back to yours over and over. Keep them coming!
You do awesome videos! Finally found a knowledgeable guy on electronics that doesn't talk weird or obnoxious. Your very clear and easy to understand.
I'm glad you like the video. I hope you enjoy the other 200+ that I have on my channel. An index / table of contents can be found here:
www.dorkage.com/youtube/W2AEW_video_index.pdf
Holy Moly!
try great scott
@@AWESOMEEVERYDAY101 GreatScott is amazing,but too advance for a college guy like me..😂
Love his videos though
I don’t usually comment on videos, but I’ve been looking around for a bit for videos to help me make sense of op amps, and this really did it, thank you so much!
Pure gold. Somewhere back in my Mims days I got op amps wrong and they've been unduly confusing ever since. Finally I feel straightened out. Thanks!
Hello sir, I am a beginner and I just want to say thanks for the introduction. I have been reading up on op amps and have not gotten it through my head, and most the videos here on youtube make it too complicated and frustrated. this is by far the best video I found on op amps. So thank you and hope you have a wonderful time
I have no idea why I found your channel just now.. I have been struggling with OPAMPS and with your clear lectures and actual DESIGN showing what is happening really helped me alot! KEEP UP THE GOOD WORK, YOU, YOU SIR! AND please DO MORE!!!
Excellent illustration, one of the best OpAmps videos here ever; Thank you !!
this is wonderful how you explain, i'm a physics professor too. for fundamental physics and quantum electronics. great job! I loved the experiment you make it after theory solving
This was one of the best explanations how opamps work. Short and practically useful. The rest shows the data sheet.
Maybe the Best easiest explanation i've seen on op amps !
I wish I had been able to see this 40 years ago - it would have made a big difference in how I dealt with op-amp circuits!
Was "big difference" an intentional pun?
😂
Why does everyone have to over-complicate this stuff, its like they make this stuff hard to learn on purpose. Took me so long to find a good explanation online as to why there is a negative voltage at the output of the inverting amplifier. You explained it well by assuming there is a voltage at (-) and that the output has to go negative in order to make that pin into a virtual ground. Other people have tried explaining it to me by FIRST saying there is a virtual ground and it never made sense to me that way. Thank you so much
I found this extremely helpful. I needed the physical intuition on how the opamp works and this is exactly what I was looking for. Thank you!
This is a difference between a newbie on Monday but expert on Friday,rushing to post a video about something that he slightly licked himself and someone who has a long years indepth knowledge.You have my respect Sir.
Currently an EEE undergraduate student; this video really helped me understand how the op-amp circuit works. Thank you very much for your time and effort!!!
I'm glad this video helped you Ryan. Let me know if there are other topics that you'd like to see a video on. And of course, tell your fellow students too!
***** you're a legend, thanks for putting your time into helping people you don't know. I for one appreciate it greatly.
peter hooper Thanks Peter! I don't think I've ever been called a legend! I'm glad you find my videos useful.
good
This is my favourite EE tutorial video. Your explanations are crystal clear. Thank you so much for making me feel so smart.
I'm amping up (pun intended) for my Biomedical Instrumentation final and this was a helpful refresher on some of the basic stuff. You have a very natural, logical and application-based approach to explaining these circuit configurations - it would be AWESOME if you did a few more. Thanks so much!
You're a talented engineer and teacher. I enjoy watching your videos because you offer a wide variety of topics and knowledge in simple and interesting ways. Thanks a lot.
I know it's been almost ten years since you posted this video, but it helped me understand things today in 2022. Thank you.
This has been my most popular video - viewed over 700,000 times over the last 9 years...
This Explanation is spot on!! It saved me hours of time. And we know that Time is money. So this dude saved me a lot of money. Please guys fully view the ads in the video and click on them too, this will support the guy who made this video. Thanks
Thanks for posting this, we flew through op-amps when I took circuits two years ago and this made everything make sense again. I might actually finish this controls lab now!
One of the clearest op amp lesson on youtube! THANK YOU :D
Finally got to understand how op-amps work with a simple explanation. Keep it up sir.
Hey Alan, Watched several of your videos today trying to knock some of the rust out between my ears. Just recently got my technician ticket and getting the bug again to return to electronics a bit as a hobby again some 30+ years later, so many cool things to play with! You do an awesome job clearly explaining, thanks for all your efforts!
Best,
- Bill
KI7QOA
great tutorial, one of the best explanations of the basic operation of op-amps I've seen yet on RUclips. A+
Alan. You do a perfect job of explaining it. I like to watch your videos, it has helped me very much in understanding how component's work. Keep up the awesome work.
Your description is better than mine. I have been teaching beginning Op
-Amps for 20 years.
I'm glad you liked it. Please feel free to use my description with your students, or even share my video (and my channel) with your students. And of course, if there's a topic that you think would make a good video (that would help your students) please let me know.
Excellent Tutorial showing how to put theory in to practice. I like your choice of circuit as it almost cover everything you need to know on opamps. your results satisfy the formula fully. Vout= -Vin(Rf/Rg)+Vref(R1/R1+R2)(Rf+Rg/Rg) by substituting we get
Vout= -4v(20K/10K)+10v(2k2/2k2+2k2)(20k+10k/10k) = 7 Volts which matches your Vout.
Thank you and we like to see more tutorials please ! :-)
Nice. One of the best explanations of basic op amp operation that I've ever heard.
"This wasn't meant to be a tutorial on how to design op amp circuits" Please do one- you are a great teacher.
Thank you so very much for this video (and all the other ones too)! I'm just so glad that knowledge doesn't weigh anything, if not I might have to go on a diet... This really helps a lot! (BTW, thanks to you I calibrated my scope probe, it's really cool to know those kind of things you normally don't look into as an amateur). This is a top youtube channel!
Well done, good refresher, being immersed in digital for the last 10 years.
Very very good. You're a great teacher. I really look forward to your uploads. Especially stuff for newbies like me! Keep up the great work!!
Wow - I finally got the "amp" portion of the device name! Yet another great bit of info - THANKS!
Thank you for this teaching.It is so important to understand it before designing with OPAmps
Love the way you explained this. Great job. Well done.
Thanks for the informative video! Was able to apply this in comparator circuit for a thermistor controlled fan. Much more sensitive than using a single BJT and easier to adjust.
Great tutorial for learning how to step through an op amp circuit! Thanks for the video!
Darn it, where were you 40 years ago when I was trying to figure this stuff out? =:o}
Guess he was either at tektronix or in college 🤣🤣🤣
Awesome video! Very interesting. Hope you keep the op-amp videos coming- Can't wait to see more!
One of the best op-amp explanation. Hats off
Great tutorial, I feel like I have struck gold here !...cheers.
You are one helluva good teacher. :) I've learned so much watching your videos.
Great video. I learned a tremendous amount about op amps and integrator circuit. Dont fault author on op amp gain think he got idea that is next needed topic.
This is a well scripted and executed tutorial that will last a long time in electronic education, not taught as well in ordinary schools!
thank you very much for up loading a great video by which the op amp student can gain value able basic knowledge of op amps
@9:00 we see the date on your scope: 27-Jan-13. This vid was uploaded the day before that: 26-Jan-13.
This shows that you're ahead of your time. Thanks for the excellent video.
👍 Thanks for the great explanation.. Today I understood how it maintain both non-invtng and inverting same voltage after watching many videos video about Op-amp and why we feed back... Simple things always makes great..
This made op amps make so much more sense I wish I had watched this in school, I never really understood what they did
Thank YOU!
Using O-SCope to present what You are talking about is the way this topic should be explained.
If you ever have time for more videos about Op-Amps, i will be more then happy to watch it, as for me this are the most difficult EE components to understand.
Once again, greatly explained, greatly shown, just great, keep it up!!! Personally I am unable to design analog stuff from scratch, but take plenty of circuit bits and pieces from here and there on opamps and anything I can... and put them together to work. With this simple explanation one can at least understand more about what is happening on circuit when opamps are involved. Thanks once more!!
Wow very interesting analogy! I will keep that in mind. What really got me into circuits was the physical analogies that helped explain them. Like the water analogy etc... so this helps. Thanks.
Thanks for another excellent video. Your tutorials are very helpful to me. I would enjoy seeing more about Op-Amps.
Very well explained, trying to design a level shift op-amp circuit for a microcontroller and this helped understanding of things again. thanks man. new sub! :)
Love your videos! You are an excellent teacher sir! 👏
It's was very helpful and easy to understand for someone like me who is really a novice. Great stuff!! Thank you.
Thanks for taking the time to make this video!
Very good and quick information!!!
Very well presented, as always. Thanks for sharing!
Thank you! Your interpretation helps me a lot!
Your videos are always so helpful
my man you know what your doing, i think you just saved my grades
thank you for sharing your knowledge and wisdom.
Thank you.
I am so lucky to find this explaination
Thank you! It is extremely valuable!
Great video!
I'd also love to learn more about Op-Amps.
Thanks.
sweet this is exactly what I needed. thank you brother, very well explained
brilliantly explained, learnt to see the simplicity of the operation
Great video thank you. You answered some questions I didn't know I had.
I loved the real life breadboard examples. Great vid
As always; very nicely done Alan.
Thanks
Great great video. I now understand op-amps a lot better. Thanks!
You are a gentleman and a scholar.
not an acrobat?
The way you explaining is awesome ...:)
and found best of RUclips in these.
It's my humble request that, it will be very helpful if you can explain how to find the input impedance of op-amp.
excellent information!
thank you for sharing
Another well made video Alan. Only wish I had had that basic description when I learnt op-amp theory at TAFE.
Awesome intro. Very simple and to the point, but not in a way that detracts to the quality of information.
Very helpful video, with multimeter and oscilloscope, thank you!
Thanks, awesome explanation you clearly know your stuff!
Thank you for your time that you cannot replenish making this great video.You can always make up money some where and not time!
Wow amazing explanation man, really made things click a little better for me appreciate it.
One of the considerations for any op amp circuit is the Slew Rate. Many popular Op-Amps have a Slew Rate 0.5 Volts per microsecond. While this may work with audio circuits, it's not a suitable Op Amp for integrators and other math related circuitry. While this video does touch on the basics, characteristics such as latch up can happen with Bipolar Op Amps. I've encountered Op Amp IC's with their tops completely blown away. So without any further discussion, if your interested in Op Amps, there are many good titles to choose from. While You tube can teach and inform you, it's good idea to read about Op Circuits too.
This video is made very good and can be understand easily. Thanks a lot!
Impressive demonstration!
another great video, very good explanation, thanks!
Very helpful video. Thank you!
Awesome explanation!
Seeing it work is beautiful.
Excellent Alan!
omg you just saved my semester ..cheers
Very great video sir...
I am studying BE-EE now....I am in 2nd Sem.
I was bored with OPAMP and its basic..
But after watching this video ..It seems interesting..
Thank You...For such interesting video.
Excellent explanation of opamp mechanics
Thanks for the easy explanation!!!
I'm going to have to come back to this one. Very well explained, but my brain is full. Thanks for sharing!
Good video dude! Keep it up. First time me understanding opamp.
nice to be able to get the info about op amps. I am slowly making my way thru your videos. lots to watch yet. after watching the video, i googled for some info on that resistor you never came back to and if i am correct, that with the resistor hooked to Vin would set the gain of the op amp. Hope i got it right. thanks and look forward to more knowledge. 73, ad0am
Solid explanation! Thank you very much;)
incredibly helpful. much appreciated.