Op Amps by Intuition
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- čas přidán 4. 09. 2024
- Op Amps really aren't as tricky as they look. You just need to understand how they work. We'll use a construction crane as an analogy for Op Amps, and solve a few exam problems from MuzzyBear's final.
Well done!
You're absolutely right about the engineers not understanding anything until they blow up, it kind of goes with the knowledge gathering process.
That is one of the best Op-Amp explanations I've ever seen. Well done sir!
I did research on op-amps a couple months ago for a project I'm working on.
I like your explanation.
It really reinforced my knowledge.
While I still have no idea how they work, that comes down to not really knowing what they are for, I think you should keep doing more videos, I love this and I know if you started with more basic subjects a lot of people would follow you and learn from your videos. I am subscribed already!
Thanks for clearing a few things up for me! Can you believe I didn't even realize that an ideal op amp acts as an open to force all current through the feedback loop? Summer classes have some drawbacks for sure. Anyways, great video and the beauty of CZcams is that anyone struggling with the speed can just hit replay!!
Pause is the miracle button of CZcams. Use it and gain much knowledge.
if there is no "negative feedback" we cannot assume anything. We write the output voltage as: V = A(Vp - Vn). Where Vp is the non inverting input voltage, Vn the inverting input voltage, and A the amplification as it tends to infinity (there is proof for this, just trust me on it). This equation is solved as a limit as A---> inf. So really, the output voltage is defined as: lim V (A-->inf) = A*(Vp - Vn). Then solve the circuit as normal, remembering not to use KCL at the output node.
That was great.. Just the right pace..
Dave's explanations over at EEV are way out of my league of understanding. I like how this broke things down, but it definitely glossed over a few things that us beginners needed to understand before it made sense. I'm going to subscribe, I hope to see more. I'd like to make a request if I could. You touched on how the circuits in his question looked confusing, but was easier if you broke them down. Could you maybe do a video on simple circuits that every beginner should know and understand?
Wow, I don't know very much about electronics, but I understand what a op-amp basically does! Thanks!
Once that is defined, use "kcl" at every node (junctions that combine 3 or more wires). if there is a "node" at the output of the op amp, since we do not know the current there required for "kcl". Then using simple algebra, we can solve for the output voltage
that's a good analogy, I used the anti-break system thought at MIT, there is a dude looking at your wheel saying weather to release the tire or break.
>.. my copy of Dave CAD just arrived straight from Australia
I detect a fellow EEVblog subscriber :)
You should probably slow your pace down a bit. Other than that, good analogy. This is close to the way I think about op-amps.
Way too fast with the board drawing, no time to see the math at all.
THank you, perfect intuition. Please make more!
Op amps are really not complicated at all, if you know how to analyze them
first, always look for "negative feedback". This is defined when there is a connection between the output terminal and the "inverting" terminal. This connection can contain any passive elements ie resistors, diodes, etc.. If there is negative feedback, the voltage in the "inverting" input will always be the same as whatever the voltage is at the "non-inverting" terminal.
That was very helpful in understanding Op Amps, Thank you!
I did not understand op amps until I blew way too many things up with op amps :) Negative resistance requires responsibility :P
If in your your mind your video is an "Intuitive" explanation of an op amp than sir you have failed and you don't know what the word means. Your intuition stopped at the crane operator.
Awesome! Thanks!
set the speed to .5 and it was good
I could keep up with the speech...but combined with sped-up drawings was hard to follow.
I have a guitar effect. It died. It is all 2-4 SMD crap. I put a signal on a O scope probe. R + in & the sine wave goes away, just like on - in. On the first op amp pin 5 +in does not do this. From listening it seems the problem is in that 1st op amp. (noise) Does this sound right? I am on/off track? The math seems to indicate this. There was also a pwr supply issue I fixed. After fighting to disassemble it, I am sure these are meant to be disposable. I am awake now.PLEASE Don't slow down!
you are so awesome! thanks! finally get this stuff!
Where will i be able to find more of your videos?
cheers
Hey, that was good explannation....but please add 8 minutes more and be slow :-)
thanks man...that was awesome!!!!!
i have a question:
i am using opamp in open loop configaration
vcc=12v, vee=0v, v- =2v, v+=(0 to 5v) ac square wave
output is=(3 to 12volts)ac sqr????
i am expecting output=(0 to 12 volts) ac sqr.
what happened here please explain.i want 0 to 12 instead of 3 to 12
It was too fast for me to understand sorry :(. I reckon you were always trying to catch up with the sped up video. You could slow down the video when you are addressing key points so you would not feel the need to talk fast.
love it!
Legend
Good info: but, too fast friend!
You really don't need to know when an op amp is acting as an "inverting amp", "non inverting amp", "adding amp" etc. That will come with more experience. With simple analysis, you can solve any circuit knowing the above information.
Perhaps my professor just made things clearer for us and more simplified.
that was absolutely horrible.
thanks
Too fast, can’t understand a bit - definitely not suitable for beginners.
+Janib Soomro u can slow down the video mate
@@hyderali4351 no one should have to slow down the video!
Good info, but guess you were running late to be somewhere. Thx.
ADD on steroids
it was very dificult to me to understand and process your words! My english is not that good!
Don’t feel bad I speak and read English, but the very fast drawing and erasing speeds plus the very fast and erratic verbal description made my head spin. It made it spin so much I though that I was going to barf, just like being on a nasty spinning ride at an amusement part.
You need to talk faster and slur your words more -- I almost uinderstood something you said.
very good tutorial but you go very FAST!!!!!!
just pause the video