Electronic Basics #21: OpAmp (Operational Amplifier)

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In this episode of Electronic Basics I will explain the three golden rules when working with OpAmps and how to use them in order to understand and build all kind of OpAmp circuits. The main focus will be the noninverting and inverting amplifier and the comparator circuit.

[@parleyk4503]

I watched this video 2 years ago and didn’t have a clue what was going on. I rewatched this video today and understood everything just fine. I don’t have a college education in electrical engineering. I just learn from KZbin and experimenting. Don’t give up!

[@ammoniahuffers]

OpAmp = Overpowered amplifier

[@LyLeap]

Yes same with me, i just study electronic using youtube

[@rgfxnet]

Thanks for this comment, I have no idea what's going on. Trying to build a amplifier and I feel like I have a long way to go.

[@happinesinyourhausehole1084]

Its gonna take me two years !?

[@timepass_coding4469]

Thankyou for motivating

[@spurrya]

Honestly as someone who knows about op-amps, I suggest you go slower. You rushed through so quickly! I KNOW the concept and found it difficult to catch up to your speed.

[@greatscottlab]

Watch it multiple times or pause the video inbetween.

[@justineymann3356]

his vids are grea but way to fast.

[@xgenesys]

Nobody would watch if the video lasts 15min...

[@UtkarshAmitabhSrivastava]

xgenesys Unless the video is from EEVBlog.

[@totalyrandomh2o]

Just take the bloody criticism and slow down.

[@jamesquags]

I know circuits, love your videos, and just watched this for a second time. This is a ridiculous whirlwind of great information but delivered at an absurd rate. Please continue the great work but SLOW DOWN for the basics videos!

[@shader26]

I love your videos. I’m an old, rusty, electronics technician (two year bachelors course at An electronics “college” when they still taught basic principles but that was in the eighties) but for me this went so fast. I got about 1/3 of it. I do thank you for showing me very clearly I need to go back to school, go back and read my electronic principles books from school again.

[@908hanhouni]

Who else enjoys watching GreatScott's videos but barely understands anything? 😂

[@paulsampson6286]

It's good review at the very least

[@dansorescu5720]

Very good point

[@haydenhoodless2055]

It's difficult to understand his videos because he just slams facts at you but doesn't elaborate. The only way you'd follow this video is if you knew about op-amps before hand, in which case, why would you be here?

[@Sachin_Pawar_34]

🙋🏻‍♀️🤣🤣

[@Harlequin43]

He is splurging too much info too fast. Both audible and visual (formulas) which causes my brain to freeze thoughout the whole video.

[@apexwindowcleaningservices4457]

Basics you say?

[@Lwhchris]

@eman khaled Even after having learnt it before, I don't really understand the contents here, because its hard to imagine the whole circuit. There are lots of stuff going on in an op-map circuit to satisfy the mathematics equation by using electrical components.

[@TheMultifun]

I would like to say I get it, but I don't get jack shit

[@Azagro]

+Don Grille Try watching the OP-Amp tutorial from the EEVBlog, more indepth.

[@ArsyadKamili]

+Azagro Sorry, but eevBlog is pain in the ass, the guy, and the channel.. I would suggest buy a book.

[@Azagro]

Arsyad Kamili Pain in the ass? What are you even talking about? The guy has a flawless explanation.

[@ArsyadKamili]

+Azagro I knew you would say that, sorry for any mistone catch of what I'm saying. Let me tell you, putting 25 minute video almost no cut, just explaining what an op-amps is, no edit, no struggle to make the video looks better, is not how you explain something on KZbin. He's almost dull, his video is low at "Point per time" score, in another word, 'Very low efficiency". He's not that type of the guy who plans His video more than 24 hour, look how people explains it in books and another videos, then wrapping it, try to record it again and again until He got maximum result, then make the video great to see. Ask people if they like and understand it, then wait for another few hours to see if His video got any mistakes, then upload it... In another word, a perfectionist. Then goes this, His attitude, His obsessing with yellow things, His way of mocking bad products, is really, inapropriate for a teacher to do, coz he's not. If you want to look at great channels, go to channels like DIY Perks, Collin Cunningham, or Michel van Biezen's video. DIY Perks is a very good example of how premium channels should look like, He got a very great passion, and sense of beauty for His channel, even though sometimes His project is not very useful to use, He wants His channel looks great, so He buy a very good microphone before He barely got money from His channel. Michel's video is what you should call " almost flawless explanation". His videos are short, easy to understand, and easy to imagine. Because He's a teacher. Though the video is not really eye appealing, His explanation was beautiful. GreatScott's channel however, is channel made by a very passionate electronic engineer, He wants people to understand, but there's a language and culture barrier. That what makes His videos too fast, and hard to imagine. You should watch and learn a lot of light stuff before you can actually understand His wideos (Videos). Collin's video? They're good af, for a total beginner. He's like GreatScott with no barrier but crew, friends, and idea. Get it now? Anyway every channel has their own cons and pros, and not everybody can make great channel.

[@ArsyadKamili]

+Azagro Sorry for the long comment.. Took me 40 minute to finish.. :) (See what I did there?)

[@Electromechanic1993]

Your explanations are tooooooo......fast!! Didn't get anything from your videos

[@godwinobas]

Nothing at all. Just like having a rapper as a lecturer

[@oscartettmar3652]

called a pause button or just slow down the video

[@baruchben-david4196]

Two solutions. First, slow down the video. Second, watch the video more than once.

[@pranalisarpotdar8203]

You should listen in a quite place

[@Danixu86]

I'm not good understanding listened english and even sometimes written english, and I'm able to read and follow the subtitles without problem... Also is youtube, you're able to pause and listen again what you need.

[@TheMcSebi]

For anyone wanting a deeper dive into opamps i can recommend EEVBlogs video on that topic from a few years ago.

[@keithnoneya]

Nice Video but WAY TO FAST. I still gave you a thumbs up for all the good information. I felt like I was in speed electronic training. Thanks for sharing. Best Wishes n Blessings. Keith

[@SteveJones172pilot]

I agree.. I would like to see this same content, but in about 30 minutes of explanation!

[@Dzatoah]

i dont understand a single word

[@stonent]

+DanielsLPecke Do you not understand english?

[@Dzatoah]

not THAT english :(

[@John_Ridley]

+DanielsLPecke I don't understand why so many people find it appealing to stand on top of a box and say that they don't understand something. I'm genuinely curious - do you mean that you would like him to make even simpler videos that you can understand, or are you proud of your ignorance. I'm not trying to be mean here, I just don't understand this behavior and I've been curious about it lately.

[@John_Ridley]

***** I am asking whether he is calling for simpler/more basic videos, or what? It seems like there are often a bunch of people commenting "Haha, I don't understand anything you said LOL LOL." They usually seem like they're more in the line of parading ignorance than asking for more basic help.

[@Dzatoah]

simpler videos

[@ddizon666]

Diagram going to fast

[@greatscottlab]

Press pause

[@cobyup10]

Awesome video! Go to the settings icon (looks like a gear) and bump the speed down to 0.5.

[@oscartettmar3652]

slowdown the video

[@zona-de-pruebas]

PDF diagrams!

[@atharvanalbalwar749]

Watch video in 0.5x

[@axelbelleris]

You are GREAT! Greetings from Argentina. :)

[@shawnhughs7412]

Man you seem to know what your doing, just found you not long ago but your so fast in your explaining how things work that i can never fully understand what your trying to say. If these videos are basics for beginners then im sure so many more people would love to watch these videos, cause they are knowledgable and you do cover alot of things people need and love to know. Your great at what u do, so if u could take the time and explain stuff more slow, and thoroughly im sure im not the only one who would love and appreciate what u do even more. Thanks keep doing great work.

[@parkerjohn2459]

Yeah finally! Can you make a video about 555 ? Thanks.

[@itsdokko2990]

+Parker John oh yeah, the classic and loved by everyone IC555. totally agree

[@asdomega]

a 555 Video would realy be great!

[@nsg650]

h made it

[@eltunene]

What a wonderful oscilloscope! I am an old technician, from the days of vacuum tubes, back in 1960. My "most advanced " scope was an Eico 460 - I enjoy your videos.

[@tenjin5586]

this electronic basics is a bit quick and advanced for me, i get confused qucikly with the terminology especially if they are so quick in succession without explaination haha, feels like a basic video if you already know what an op amp is

[@automationsolution]

Perfectly paced video. Thank you.

[@ItsMe-ic5oc]

4:25 Can anyone explain to me what does connecting the plus input to a DC offset achive? And/or what would happen if the plus input was simply connected to ground instead? Thx in advanced.

[@anthonyvolkman2338]

Excellent work there. I've used opamps so many times I could probably make an amp while sleeping, now class D and T are so fun to build (love building them!).

[@ibrahimyosry910]

Why did you use that 10K pull-down resistor in the non-inverting amplifier? In other words, what does it mean to set the reference voltage?

[@girijadav]

Because the voltage at inverting and non-inverting terminal should be equal.

[@AnilKumar-lt4uk]

Great Scott you knowledge is great

[@Taran72]

Great Video as always: I like that you go a bit fast to have all the info in a few minutes. I can go back to the part I need to clarify again. Keep up the good work! :)

[@lukischwab9235]

Thanks for this Video, really nice, just like allways. I hope that I can now understand op Amps. I will try tomorrow.

[@Crux161]

+GreatScott! Could you please do a video on batteries, c rating, charging, etc? Like for you basics section? And maybe a little discourse on batteries vs ultra-capacitors as far as functionality is concerned?

[@greatscottlab]

Sure. I put it on my to do list.

[@Crux161]

GreatScott! Thank you :D Always excited to see what you've put up! I love this channel

[@NiceEyeballs]

this is the first video of great scott where I didn't understand even half of what op amp is. And I'm a final year student of Electrical Engineering Bachelor degree. Wow Im so dumb dude

[@DiscoverRajivVlogs]

You call it basic😂🤣🤣😂 I couldn't understand anything.

[@DiscoverRajivVlogs]

@Евгений Кудрявцев can't understand a single word or yours 😳🤣😂🤣🤣😂

[@donpdonp]

I really enjoy your electronics videos and I'm experimenting with an opamp, trying to amplify a microphone. I can follow most of whats in this video but there is a part that I'm confused about. In the first opamp example, you say "A 10k-ohm pulldown resistor to set the reference voltage". I do not understand the reference voltage part and how it is related to using a pulldown resistor.

[@JerryEricsson]

ahhhhh, I think I am confused. Very confused... Perhaps it is the fog of age as I will soon turn 65, and my wonderful brain is not functioning quite as well as it once was.. Perhaps it is the narcotic pain medication that flows through my brain to numb the pain brought on in an accident many years ago, but I am, none-the-less very confused. That said, I do have some op-amp chips in my parts bin that have nothing to do right now, maybe I will run onto the project that I found to use them on when I ordered them,. Ordering from China has that effect. By the time they arrive, I have long forgotten the purpose of the chips, so they lay in my parts drawer till I once again come upon the project. Saddly these have been in the drawer for over a year and I am sure the project has been taken down or something. Oh well another will occure soon, I was in hopes I could learn more here, but my brain itches and I am confused. Guess I will watch Judge Judy and try again another day. Thanks for trying to sort that out for me anyhow...

[@oscartettmar3652]

thanks for the story :D

[@mohamedakkafaraj728]

great work man , but y go quickly ^^

[@arun2438]

You need to slow down in some videos and explain the concepts clearly

[@asb8035]

Nice video editing BUT I wanted to learn the "basics" unfortunately, you did not explain it very "basic" and how you simplified the formula or why Vin is given by R1, and I ended up having to pause and look at other sources in order to see how you came up with those formulas and HOW and WHY they are formulated as such. You seem to be very knowledgeable but explaining "the basic" had me more confused than before I watched your video. Perhaps just me but would be great if you could explain the WHYs and HOWs and not just the WHATs. Peace.

[@vremebgvremebg457]

This is the first video of the series that skims way too fast over the details of such a large topic. Please make a longer video on opAmps! :)

[@dananca4432]

Hi! maybe you can put a clip with a sine and square signal amplifier with opamp. I haven't found anything effective to use it on the awg out from the picoscope. Thx ,you are the best

[@lupuid]

Hi Scott, I am thinking to create a cheap "touch" sensor using a pizo ceramic unit. Which kind of op amp would be suitable? I know they generate quite high voltage pulses, up to 20 volts maybe more, and I am afraid not to damage the Arduino input. Thanks, Daniel

[@JChan1026]

Fuck. Just had my finals on circuits last Friday. If only this had come out a tad earlier :(

[@ACoTam2]

3:30 FINALLY someone told me about this

[@pibyte]

Sorry - but this not a good explaination. Way too fast - nobody can follow.

[@monochromev1892]

Please create a playlist of this Electronics basics. 🙏🙏🙏

[@greatscottlab]

+Monochrome 680 There is already one

[@monochromev1892]

+GreatScott! oh my mistake, i didn't search correctly. Sorry 😉

[@dieselgeezer18]

@@greatscottlab Beginners don't understand what u say. Plz explain tings slower and more Understandable

[@toxicore1190]

you actually marked an NOT-Gate as op amp :O 0:06

[@dimitriosvlamis8696]

+Toxi Core hahaha i was about to say the same

[@INeedAttentionEXE]

+Toxi Core no thats not a not-gate, it's an op amp. not-gates have a hollow dot at the front with 1 input and one output

[@Azagro]

+TheCraftingCriminals - 0:06, third arrow from the left, it's basicaly an op amp aswell as a NOT gate. The dot indicates the point of inversion. A NOT gate is an inverting buffer and OP Amps can be made into inverting buffers aswell.

[@toxicore1190]

+Azagro but it's not done

[@Azagro]

Toxi Core What is the full sentence you are willing to write?

[@sang7873]

I still confuse a lot about it. but let's me ask a question "what different benefit between inverting configuration and non-inverting configuration.

[@ThomasHaberkorn]

Great video as always, but why the need for a pull down resistor at 1:20 ? Does the non inverting pin have some resemblance with a digital pin on a microcontroller?

[@haiaokuwa]

I love your channel! It never fails. Whenever I want to look something up to either see if it’s the right component for the task, or to learn how it works, you’ve always got great videos that help me progress quickly and very rarely slow down unless I want to dive deeper. Thank you!!!

[@samcurfman8494]

This is like a red stone comparator

[@MDFRESCUER]

Good video.

[@lelandclayton5462]

You forgot to mention another key fact or should I say Rule #2. When used with negative feedback a Opamp's input never draws current but draws current from the voltage input. Another oldie but goodie of a Opamp is the LM741. It has a few advantages such as overload protection. When building a circuit that requires a Opamp and after you have figured out for requirements then start reading up data sheets and compare between the LM358, LM741 and the LM10. If anything else I would look at the LM part list on Wikipedia.

[@voltronicsautomation]

Too fast.. for a beginner like me I cannot catch-up a lot what u'd already taught. This video I think for the people like you, who already mastered this.

[@dalenassar9152]

At about timestamp 1:25 I noticed you pulling resistors out of those 'sticky' packs, and inserting them into your breadboards. This contaminates the breadboard with the sticky material (unless you cut then out or cut the ends off). Over time, the breadboard malfunctions with buildup of this junk...just a suggestion... KEEP UP YOUR 1ST RATE VIDEOS!!!!!

[@WistrelChianti]

This video did a great job of explaining why I don't understand op amps....

[@JustCallMeKoko]

I have been trying to use the LMV358 breakout board by Sparkfun (www.sparkfun.com/products/9816) to get a microphone to work with my computer. There is an impedance mismatch (the mic is low-impedance). When sending the mic signal through the LMV358 breakout and into the computer, the audio was amplified, however there was A LOT of static. I know the mic is working properly because without the LMV358, the audio is clean, but very quiet. What could be the cause of the static and what could I do to correct it?

[@ErazedFX]

More electronic basic please!!

[@Laziter73]

That scope you're using, which brand and model is it? Thanks for a great tutorial, keep up the good work :)

[@marc_3808]

It's the first time I notice something unusual on your writing, I've always liked the way you draw your schematics, all by hand mostly, I can't tell why until now I noticed... Are you left handed?? Maybe someone asked this previously, if not, this could be included in a future Q&A video... maybe?

[@amtpdb1]

I would have liked to see it done slower with examples as you went through it so some of us that you just lost-might get to catch up. The stop and start button got worn out!!\ Thanks for the great educational videos.

[@sahinyusuf]

Hi Scott, Can you design an opamp with bjt transistors. It will be great opportunity for us to understand what is inside these little ics.

[@hydropage2855]

“Constellation”? Are you trying to say “configuration”?

[@liviu201]

Whenever he points on the oscilloscope with the screwdriver my heart stops for a second

[@DrHarryT]

I have been dealing with general electronics, electro/mechanical repair since the late 70's and have an aptitude for this without any formal training. Like the 555 timer video, this one and others I have watched, you go so fast without explaining that If one does not already know what you are talking about it all flies right over the head. Example, here are some other comments... Hani Al Jamal 4 years ago Who else enjoys watching GreatScott's videos but barely understands anything? 😂 Paul Sampson 1 year ago It's good review at the very least Paul is an example of someone who has had training and therefore can understand without explanation.

[@sirpatrickrattschlegel2828]

Your videos are very good just one thing would make them great … for future Videos it would be good to implement some > _delay_ms(500); < between the scene change cuts … it makes then more comfortable to pause at the right spot. Greetings from Switzerland and good continue for the future Patrick

[@BorqBorq]

I love GS videos, too. I like that they are straight to the point and packed with excellent information. The key word being "packed"! I agree with you that a little "delay(1000);' would help out a lot. Not only in between scenes, but sometimes the information he's jotting down goes by so fast, it's hard just to pause at the right time so I can "analogWrite(PAPER1, copyGSnotes);"! :D That being said, this is his channel and his product(videos) are of his design - Given the choice of 'take it or leave it', I'll take it! Thanks for the videos +GreatScott! and keep up the good work !

[@hukkabukka]

i bought a data cable from market but length was to short so i make it extra ling by adding 4 core copper wire to it. it work just fine but my phone is not charging as fast as before. ll u help ? waiting for ur reply

[@DannySebahar]

Why did you attach the first Op-Amp's (The Non-Inverting Configuration) Non-Inverting input to ground through a 10k Ohm Resistor? I think you just chose a Pull-Down Resistor large enough to make the circuit work, but you don't explain it which threw me off when I first saw this video. The 10k Ohm Resistor isn't a "Pull-Down" Resistor. It's a "Current Compensating Resistor for Input Offset-Current. At least according to the Op-Amp it is. The Resistance seen by both Inputs "Outward" should be the same and with the Feedback Resistor of 5k1 Ohms and the Inverting Input Resistor at 1k Ohms the Current Compensating Resistor would be the Parallel Resistance between Rf & Rin (5k1 & 1k Ohms) or 820 Ohms "Pulling" the Non-Inverting Input to Ground. (I'm using your feedback resistor values.nAn 820 Ohm Current Compensating resistor is too low of a resistance. Usually it must be larger than 1k Ohm.)

[@stephenoconnor5702]

I really like how all of your videos are edited. How do you approach pre-production? Do you write a script first and then film, or film and construct a script from your footage? How often do you have to go back and film extra bits you discover you had missed? How much of your original footage usually makes it into a final video? Sorry for the slightly unrelated questions! Please keep videos coming!

[@greatscottlab]

I will answer this question in my Q&A&C show

[@stephenoconnor5702]

Thanks!

[@teadrinkingilluminati9173]

What about single transistor amplifiers? Why do they act that way?

[@snaxpax348]

Love your videos, great job using correct terminology!

[@daviddawkins]

Oh boy. So much great information here, but presented way too fast. I will rewatch a few times and slow the speed. In any case, thanks for making the video.

[@marvnet8898]

But why do you draw the arrows for voltage up side down?

[@germas369]

I like your projects but these electronics basics videos are practically pointless. You go so fast nobody understands you, proof is in the comment section!

[@abhinavkumar1253]

How to select an op amp....i have sensor which gives around 100mV to 1 V..i want to amplify it... Which op amp should i used

[@stormtrooperelite1453]

Be advised when you look at the absolute characteristics. I used a LT1078 which said supply is +-22. I gave it +12 and -12 and barbecued the damn thing. On the LM358 it does say +-16 BUT it also says single supply can go up to +32 meaning it can certainly withstand a rail to rail swing of 24 volts, which was what the +-12 gives it. According to paper, the LT1078 should have as well, but it didn't.

[@daitedve1984]

Obviously this video is not for beginners (but for who????). I got nothing except idea "this is useful component" 😆 Sorry, but you cannot explain things or do NOT understand yourself! Who really understands, that can explain it simple way.

[@Aneesh-bd9es]

Nice work Can you please do me a favor. Please make a video of making balance line drive, for converter in un balance audio into balance XLR out,I tried so many circuit using 5532 opamp ic but I don't get the perfect sound, there are some noise, please help me, Pls make both video or circuit,of unbalanced to balance and balance to unbalanced.wating for your schematic diagram sir.

[@ronaldbryan5376]

Far too fast. The visuals are helpful but fly by before I can fully comprehend. Tried to pause to read the written equations and the image had already changed. Take breaks please, even for a second. If you won't verbalize the equation, allow the viewer to read it...after you've written it

[@philipphematty6699]

You have plenty of good video Scott. This one though isn't all that helpful, because of the fast-paced explanations and the huge amount of fluff infos that have nothing to do with opamps. You clearly know what you are talking about. I imagine, a more understandable redo of this video would be well received.

[@ferinarakkal1442]

I am making 24v 10ams smps my output is 410mA I want to increase current at 10 amps how I get 10amps in output without Changing voltage

[@randominternetviewer166]

I like your videos, but a common problem i have is catching up... this problem i dont often have in other videos by other youtubers of the same topic... If anything i can suggest, reduce the overly technical discussion and simplify the thought by skipping additional unecessary technical side thoughts.. Nonetheless, still a good video, just needs a little refinement ;)

[@tedsun2736]

Hi, scott, thx for this video, help me a lot for understanding the op amp, just a quick question, for your non inverting setting of the op amp, why a 10K pull down resister is added to the non inverted Vp pin, for most online resources, there is no this pull down resistor, can you give an quick explain. thx

[@王中昊-e5r]

I am a chinese student. We have so much homework and exams that I don't have enough time to experimentalize. I really like to watch your show.I am also a technical indoorsman in China.But the atmosphere of teachnical in China is not very good.And there's a lot of fakes.I am very envious of your government and the atmosphere of teachical.

[@bennet7817]

There's just one problem: before you know what's happening, there's something new. So you repeat the video and end up having no fun at all. I can see the effort and the knowledge, but that is too fast for me. Sorry :(

[@JoseGonzalez-rt5fk]

Well, I can't really learn from you that well because your music might be a bit too high so you should lower it a bit and increase the volume of your voice. I have found out of this myself while I was learning things with videos. It is a lot easier to learn if a voice is loud and clear and not low and uneasy to understand. I am OK with your speed of talking through these videos, but I am just saying to lower your background music a bit and raising your voice a bit more and this might help with the learning process.

[@satishsanhotra4391]

Hi Scott.. UTC 358D op amp ic is placed near the volume knob of my amplifier. Is it work to amplify the signal. As my amplifier not giving sound but usb is playing

[@fernandohood5542]

And what about the frequency response? Would a 1mhz signal be amplified the same way as 10khz signal. I think the video is way too fast and like many is becoming more geared to views.

[@sang7873]

on non-serious side, let's make a joke " Make AMERICAN Great Scott again"

[@Bryan-l6n1w]

Im assuming that these transitiors typically function on rectified Ac? Is that why theirs a -12v +12v current because they constitute the top half of the frequency wave and the bottom?

[@mrx.2233]

Mr 'Great Soctt' my apology for this reference but I do not know your name. What is the make of your power supply and where can it be obtained? And price approx. Thabks

[@handsonhansen9821]

Instead of rushing through all these subjects, just make more videos. There was way too much information to absorb in a short span of time. That gets frustrating for people who are willing to learn electronics, like myself.

[@bunnatang2081]

what is your oscilloscope model?

[@todortodorov676]

dat touchscreen oscillator, damn ;x

[@todortodorov676]

right, right, thanks for correcting me :)

[@RosenL337]

Значи има и зарибени българи по Great Scott ? Yeah , He is Great ... :)

[@todortodorov676]

DreamTeam Gaming О, да, има ;х

[@ThatJay283]

thanks! i have recently received exactly 100 LM358 OP Amps (which only costed $4 lmao), and now i actually know how to use them.

[@actodc9780]

What do I need to learn to be you? I love electronics but I can't work. I admire you

[@picklerix6162]

Mr. Chow, my electronics instructor used to say, "DC is the horse and AC is the rider". BTW, I loved the op amps in college and built some cool circuits in the lab. I became intrigued with op amps when I found a book about op amps when I visited an old Heath Kit store in the 70's.

[@cosmikodes]

Could you please explain the schimtz trigger?? By the way, like your german accent a lot.

[@greatscottlab]

+Saikat Mohanta I put it on my to do list

[@horvathgergely452]

You're not educating the majority of your followers, because they don't understand any of it, and the minority don't need basics videos, they understand it pretty well. So who are you targeting?

[@lakshsharma3415]

can you make a video tutorial on 555 TIMER and MOSFET

[@randalltufts3321]

5532 . Which is the best highest output for a headphone amp. I have one that uses one for each channel. I've already tried a couple and the muse 1& 2 are available and are sought after by hi fi enthusiast's. Which one has the highest gain

[@RepairsMX]

Hello everybody , Im Looking for help. Can somebody help me to identify one op amp whith one schematic? Pleaase please ley me know, thank you very much.

[@cosmikodes]

What will be the circuit arrangement with discrete components for the function below :: (Frequency MHz)out = n *(frequency khz)in 800 < n < 1500 (assuming " n " for a particular circuit in between the above range) In other words, a rf frequency multiplier. Where, INPUT WAVEFORM IS A PWM CLOCK WAVE in the khz range. is it even possible to do??? If you can help me with the working diagram, it will be very helpful. Brother....

[@retrohd1_]

This video is really difficult to understand. I’d say I understood about 20-25%. But I did learnt somethings, so you get a like 😂

[@randomized4368]

Can you make a video about making a k-type thermocouple thermometer with a dedicated microcontroller and not with Raspberry Pi or Arduino.

[@FranzSarmiento17]

I've undergone this lesson this class and I understand the points, but I think this was explained too fast. Your other videos were paced well, this one was particularly too fast

[@pilotsempor]

very good idea I am a loyal fan of your channel .. always successful