Hi everyone - It's come to my attention that there has been someone masquerading as myself, responding to some comments here with a link to a Telegram chat to win a prize from me. THIS IS A SCAM, I am not holding a contest, nor do I have a Telegram account. PLEASE DO NOT RESPOND TO THESE MESSAGES!! It's happening on a lot of my videos, I'm taking steps to remove them manually, but as I have 162 videos, it will take some time. If you do run across a suspicious comment, I would appreciate you letting me know at info@dronebotworkshop.com. Thanks! Bill (The real one!)
@guyprovost9 ай бұрын
Yep, just got one and reported it.
@DownhillAllTheWay9 ай бұрын
Thanks for posting this. I got the "prize" response, but I was pretty ssure it was a scam. Nobody offers prizes to somebody who never joined the competition unless they are expecting to get something out of it. Did you ever hear the upshot from anybody biting at the bait?
@korrige16 ай бұрын
Ok Sir
@Dronebotworkshop Жыл бұрын
Sorry for taking SO long to get another video out, as many of you are aware, we had an ice storm last month that cut my power off for 5 days, and dropped a tree onto my house and another one onto my car. So lots of interruptions while we got that sorted out, and it delayed me from working in the workshop. The tree is off the house now, and I have a rental while the car is being repaired, so I should have another one out shortly. Hope you enjoy this one! Bill
@justmc62 Жыл бұрын
Glad you are safe... Mother Nature can really show who's boss. Thanks for the update and the new tutorial.
@AliHussein-bb3ie Жыл бұрын
Sorry to hear that 😢
@user-mr3mf8lo7y Жыл бұрын
Glad you sorted out.
@stevesopenrocket Жыл бұрын
Wow! Glad to see you are safe! As usual, an excellent video.
@jwtfpv8957 Жыл бұрын
Hi Bill, Hope you sort everything out soon. Chin up. Cheers Jase :)
@ingoschmied6811 Жыл бұрын
Your videos are of the highest quality! You obviously put a lot of time and effort into making them, and it is greatly appreciated.
@anithasshenoy66628 ай бұрын
This deserves appreciation. One of the best explanation of Op-Amps and demonstrations. Thank you very much.
@michaelphares7155 Жыл бұрын
You're like the Bob Ross of Electronics Design. I took a course in analog electronics and spent a lot of time around the theory of Op Amps, but never really got taught about some of their more practical applications. This video was great at keeping things simple, to the point, and wonderful demonstrations to accompany each example. I've liked your videos for a long time, keep up the awesome work!
@nathanielcabansay4535 Жыл бұрын
Good day, Mr. Bill, with regards to the non-inverting amplifier, the actual formula is (1 + RF/RD) * VIN, so the actual amplifier gain when using 1k ohms as RF and 1k ohms as RD is actually 2, which explains why the output sine wave is bigger.
@jeffschroeder48058 ай бұрын
I have watched numerous explanations of operational amplifiers and this is the best. I really appreciate the documentation you make available. It makes it much easier to actually replicate your demonstrations, trying to follow along with a video is much too frustrating. Thank you for your commitment to teaching others.
@JonathanDeWitt1988 Жыл бұрын
Bill, I'm very sorry to hear about the ice storm and the damage it did to your vehicle. I'm glad you are ok! This was another wonderful video. Thank you for addressing op amps, a challenging subject. You made them a lot more approachable. Thank you also for noting that the formulas for gain are estimations and explaining why (the mention of not including impedances in the formulas). This video is going to help so many people better understand this subject.
@AjaxCrypto Жыл бұрын
You just made me feel really old as I remember when the 741 Opp Amp was released 1968. They were a hassle to design circuits for as they required two power supplies, both a positive and negative with a shared ground. The LM324 (1974) was so much easier to use with its single sided supply.
@wafikiri_ Жыл бұрын
Maaybe as old as me. I used two 741 op amps in the early '70's to build an electronic théremin, with two capacitive plates for control of tone and volume through respective variable, high frequency oscillators and superhetherodine amplifiers whose residual frecuency, in one of them, was rectified and converted into gain control for the other's audio amplifier.
@pixelsquarelight Жыл бұрын
I've been a long time viewer but extremely infrequent commenter. I just wanted to say that I truly and sincerely appreciate your videos. I very much appreciate your clear even comprehensible tone and explanations. I truly appreciate what a valuable tool your videos are and how much value they have brought to my project. Thank you very much
@alanh8664 Жыл бұрын
Greetings. The crkt you have at about 39 minutes, is used on B-1B aircraft. I added a small cap from the opamp output to the common emitter. This allowed a small amount of current (few mA) to flow during the opamp swing between one BE to the other BE transition. It greatly reduced "noise" and reduced the output impedance passing thru open circute etc
@mike_van_in Жыл бұрын
The usual high standards that we've learned to expect! Great video, with flawless production. Sorry to hear about the devastating ice storm. It's remarkable that you could *still* produce this video. Best wishes for a speedy "recovery", Bill!
@durgeshzope718Ай бұрын
Most clear and detailed explanation of Op amp I ever seen. Thanks a lot
@pcantele Жыл бұрын
Thank you for the great explanation! I studied op amps in school back in the mid '70's, but never such a good explanation! 😀
@adjeiwilliam417310 ай бұрын
Great demonstrations. Much clearer than what I learnt back at school 13yrs ago. Good job
@korrige16 ай бұрын
Mr work shop thank you for sharing your knowledge..I am from Jamaica and I found a sudden interest in electronics engineering since September last year. I am will to accept all the help I can get.. again thank you and many blessings to everyone on your channel
@Keith80027 Жыл бұрын
Thanks for bringing back memories from 45 years ago!
@rdhunkins Жыл бұрын
Any new student starting Electrical Engineering should watch your videos before going to class. Understanding the principles you put forth would help when the student is presented with circuit analysis problems from a dry as bones professor. I speak from personal experience from 30 years ago.
@aleisterlavey9716 Жыл бұрын
We had a teacher as dry a it gets, but the practical experimenting (that was in the curriculum) helped a lot.
@guyprovost Жыл бұрын
You are such a good teacher, this is mind boggling. Way better than teachers I had at university!
@mikejohn5573 Жыл бұрын
Your non inverting amplifier with the 2 equal resistors actually has a gain of 2 because the output is divided by 2 and voltage at the inverting input matches that at the non inverting. The gain formula for this configuration is 1 + (Rf / Rd)
@KoffeeByker Жыл бұрын
Yes
@BillySugger1965 Жыл бұрын
Minor point, but an offset voltage in the range 1-10mV is the typical offset at the _input,_ not the output. Others have commented on other relevant points. But a very well presented tutorial. Many thanks.
@clearlinetechnologycorp.5974 Жыл бұрын
Was going to say the same, good catch!
@lastawake2822 Жыл бұрын
Thank you very much for very useful projects and ideas of using opamps. This splitter power supply is fantastic.
@apbosh1 Жыл бұрын
I always try to guess the catch phrase at the beginning, I was sure you'd go for "there's a lot to gain so let's begin" I was wrong of course.
@deepaknanda11132 ай бұрын
Gains are imp😅
@paulchamberlain7942 Жыл бұрын
Fantastic video as always. I'm sure all your viewers hope all that storm damage is fixed as soon as possible. Picturing the storm damage in my mind led to my imagining how you may have dealt with such a testing situation. What came to mind was an incredibly calm and serene and methodical step by step resolution to all the problems. Perhaps one day you could share the story in more detail? How the interactions with the relevant parties went etc. I can only imagine your methods of dealing with this situation would be a lesson to most of the rest of us viewers too. I know I wouldn't have been calm and methodical if a tree had landed on my house and another one on my car too! I can't imagine you getting angry or losing the plot at all!
@flashcorp76 Жыл бұрын
Sorry for the trouble you've had with the Ice storm, I can relate (more or less...) We've had a really heavy Hail storm around our place that caused a huge roof leak... all fixed now ! And really happy to watch your videos once again, always something informative there. Keep up the great work (and yes it takes Work !), and courage !
@drivera0502 Жыл бұрын
22:37 I want to offer a correction to the gain formula here. Inverting does follow the -Rf/Ri but the noninverting gain follows 1+Rf/Ri, so for setting Rf and Ri equal, the gain 2 which better matches your oscilloscope readout. Otherwise very informative video and of the op-amps, as I work with 5V sources a lot, I go by the MCP6022 almost religiously, using a virtual ground set at 2.5V for sinusoidal operations
@caffeinatedinsanity2324 Жыл бұрын
Good catch. I noticed that as well.
@Vahe.Caliskan Жыл бұрын
Good eyes! Yes, the gain should be (1+RF/RD) using the notation presented. The scope shot did show that the output was in phase and the amplitude of the output was higher than the input amplitude. With RF=RD=1k, the gain should be 2. However, it seemed that the gain was higher than 2 since the scope channels were at 50mV/div for Channel 1 and 500mV/div for Channel 2.
@drivera0502 Жыл бұрын
@@Vahe.Caliskan i couldn't see both channel settings but they were off by a factor of 10, which I assumed was likely different probes that didn't have the proper scaling since some use 10x and others use 1x
@Vahe.Caliskan Жыл бұрын
@@drivera0502 I saw the volt/div settings on the lower left of the scope face and you may be correct on the probe settings.
@slordmo2263 Жыл бұрын
Glad the 'commenters' saw that, it was a glaring error, it might not make a difference at 'higher' gains, (I.e. A gain of 101 not 100, doesn't give a big error as a gain of let's say 11 instead of 10).
@Vahe.Caliskan Жыл бұрын
For inverting and non-inverting amplifiers, the voltage gain AV should not have the Vin term as a multiplier since AV=Vout/Vin. So AV=-RF/Rin for the inverting amplifier and AV=(1+RF/RD) for the non-inverting amplifier. What is shown is actually the output voltage Vout. The extra 1 term in AV for the non-inverting amplifier has already been pointed out in a previous comment.
@jeffbeck6501 Жыл бұрын
Best electronics video of all time. All different uses of an op amp including low pass and high pass filters, ...that was unexpected. I wanted to learn about op amps and active crossover circuits and this video killed many birds in one shot.
@jonreiser2206 Жыл бұрын
I’ve got to take the prerequisite class to this video. This is very obviously a super informative video. I’ve been learning a lot from this channel. There are just too many concepts and terms I haven’t learned yet. This one will go in the watch later folder.
@kylereed3577 Жыл бұрын
Thanks Bill, another great video! Sorry to hear about your troubles hope they are resolved soon.
@thomaslisson5619 Жыл бұрын
This excellent video spares a book. You have the talent to explain complicated things simply. 👍
@4Fixerdave Жыл бұрын
You know.. for $0.10 you could get a CH32V003. It's a 32-bit 48Mhz RISC-V2A processor with 2KB SRAM and 16KB Flash... 10 cents in quantities of 50 for the 8-pin variant. It actually costs more in shipping than it costs for the device... *and it comes with a built-in Op-Amp* :) Analog op-amp exposed right to the pins (with a bit of configuration). Single-side supply, but still useful. Doubt the specs are particularly impressive, but whatever. So, you could buy a 10-cent op-amp for your project... and it comes with an MCU for, you know... whatever. :) Crazy world we live in now. Oh, and thanks for the refresher course. I wanted to try out this integrated op-amp... figured I should start with the basics.
@tomcolby3052 Жыл бұрын
Excellent explanation- will be very helpful for me in developing some circuits for hobby project.
@c_b5060 Жыл бұрын
This is the absolute best Op Amp video I've ever seen. Subscribed.
@Sikuq Жыл бұрын
Thank you for your single to dual voltage circuit. It works great.
@ThatJay283 Жыл бұрын
i just made my first amplifier that actually sounds good with an op amp. i used LM358 for it. when i turn the gain up high enough, it even picks up radio signals lol, so i totally see why audio equipment is always in faraday cages. for the dual supply i just used the other side of the LM358 with another NPN transistor and a voltage divider to provide my common ground.
@electroreveal64349 ай бұрын
Very good video, excellent explanation, I myself used op-amp 741 to build a triggering circuit for Silicon Controlled Rectifier. to control DC motor speed.
@user-mr3mf8lo7y Жыл бұрын
The most critical point you have made was about the amplification range that it is limited to power supply limit (rail-to-rail). 99% of the videos are misleading, present like op-amps could amplify to the moon. Thanks a bunch.
@PhG1961 Жыл бұрын
Yeah I noticed your absence! Glad to see you're back and that everything gets sorted out. Very informative video and a nice recap of things that I almost had forgotten.
@christianlemire9883 Жыл бұрын
Toujours aussi instructif et divertissant! La meilleure chaîne de ce genre !bravo !
@kaleoride9 ай бұрын
Il est très bon!
@ChrisHalden007 Жыл бұрын
Nice video. Specially the last part about negative voltage supply. Thanks
@saravanampatti1 Жыл бұрын
What a wonderful video. You enlighten the world. Great service to humanity.
@junkmail4613 Жыл бұрын
Good video! I'm 74 YO retired electrical engineer. USA NCE 1982 Thanks
@jmtx. Жыл бұрын
Thanks for such a clear and concise intro to op-amps!
@21thTek Жыл бұрын
Thanks so much for a very extensive and useful material you took the time to developed for this video. Best on the topic !! 🏆🏆🏆
@jimwolsiffer4397 Жыл бұрын
Very good lesson Bill! I needed a refresher. I am working in NBA circuit to take a 0 -5 vdc control and set it up to run several independent motor controllers. My 1st thought was to feed the single control voltage to several unity gain op amps so that each one could then be the control input to its corresponding controller and track properly the changes of the input voltage. The 324 should do the trick.
@GoforitmanagerАй бұрын
Excellent video, so well laid out. Thank you.
@Robolearning Жыл бұрын
You are the best youtuber at tech side when it comes to presenting the content who is not just hurry to present something in a rash (Hope I am correct ). Excellent !!!!!!
@danielostlund4508 Жыл бұрын
Well i must say i am very impressed by this tutorial. I think probably the best and easy understanding video i have seen in a very long time, and i´ve seen a lot of tutorials but they are so over-mathematical and complicated. You are a very inspiring person for both young and old folks who are new to micro computing and small electronic hobbys. I have recantly diving into the arduino and rpi pico djungle of projects and try to sort all fun and facts in my head cause it´s a lot to take in.
@Tech-Relief Жыл бұрын
Very useful, I will put a link on my PC to remind me about OPAMP circuits when I need one...
@baffel100 Жыл бұрын
Spot on and great easy to understand instruction, even for a beginner and a amateur like me. Great content as always!
@patwicker1358 Жыл бұрын
Nice coverage Bill. You did a good job of boiling down to the essentials.
@wherami Жыл бұрын
Incredible material. Thank you
@peddlereffects Жыл бұрын
Only partway through but it’s excellent so far as usual. I would like to offer a few corrections from my hobbyist experience building guitar effect pedals: 1. Op amps like NE5532, TL072, etc, do not *require* dual power supplies - they are commonly used in 9V single-supply designs. When used with single supply, however, they need a bias voltage (usually Vcc/2) so that an ac signal can swing positive and negative, and then need to be ac-coupled (typically with 100n-220n film caps) as a result of the bias voltage. LM358 and LM324 are special “single supply” op amps because their output voltage can swing all the way to the negative rail - like half of a rail to rail op amp. That means when powered by a single supply, they can handle input and output voltages all the way down to ground (positive voltages are still limited to around Vcc-2). 2. For an inverting op amp, the effective input impedance becomes R(in) - so by using 1K resistors for an inverting op amp, you’re basically wasting the lovely high impedance of the op amp. (IIRC this happens because R(in) winds up in parallel with the op amp’s inherent input impedance, but don’t hold me to that.) In my experience, you typically see resistor values of 10k-100k for inverting op amps, and even then they are often preceded by an emitter follower or non-inverting buffer to improve the input impedance. 3. The slope of a one-pole filter is -6dB/Oct (not -3dB).
@BillySugger1965 Жыл бұрын
All good comments, but a reply to your point 3. -3dB is the _voltage_ roll off, which Bill likely was talking about. -6dB is the _power_ roll off (power is proportional to voltage squared). 😊
@Manticore19604 ай бұрын
@@BillySugger1965 peddlereffects is correct. The voltage roll off of a first order low pass filter is 6dB per octave (=20dB per decade). You have the power & voltage terms transposed. A 3dB loss in power equals half power. A 6dB loss in voltage equals half voltage.
@calebsuit53909 ай бұрын
I love your videos man. Your channel is elite for electrical engineering.
@jimdean7335 Жыл бұрын
Thanks for the content. I have a BUGBOOK on op amps by Howard Berlin in my library. I just looked, it has a first printing date of 1977. I’ve had it since then. For you younger viewers we used real books before the evolution of the internet.
@conwaynoel3715 Жыл бұрын
Brilliant vid my friend , re - learned a whole load about Op-amps that I'd forgotten , thank you !
@2008synack9 ай бұрын
Not sure if someone pointed this out already, but non-inverting gain is 1+rf/rd so your gain would be 2 where both resistors are 1k. (which it showed on the oscilloscope)
@tedbastwock38105 ай бұрын
Yes, good catch, some of the top rated comments here pointed that out. I dont think Bill responds to a lot of comments, but to be fair his vids have a tone of comments.
@elmono558 Жыл бұрын
If you don't need a lot of current (
@davidbrooks8621 Жыл бұрын
Bill, Thank you very much. In the frequency equation you missed the pi in the denominator.
@jim5148 Жыл бұрын
Good video. You put in a LOT of work to make it.
@temyraverdana6421 Жыл бұрын
Great video, very useful. Thanks a lot
@MarcelHuguenin Жыл бұрын
Excellent video Bill, very nicely laid out, good graphics as always and great explanation. Thank you!
@DigiLab360 Жыл бұрын
Incredible info and presentation. Thank you so much 👏
@onemytech1966 күн бұрын
Thank you very much for the video This was a very helpful video about Op-Amp I really enjoyed the video
@333cgs333 Жыл бұрын
Such a timeless video! Thanks a lot
@EfficientMan Жыл бұрын
Very usefull, thanks. Regarding Rd and Rf resistors in inverting and non inverting amp, nobody ever tells us about the range of resistors. For example you used 1K for both but what about 5.6K for both or 10K, or 47K. It is about ratio but I have seen it doesn't work the same if I change the values although it is the same ratio and I spend hours of trial and error without understanding why.
@pigmanuk Жыл бұрын
Sounds like you've been having fun Bill 🙂 Great to have another video. Keep up the great work.
@martysomoco Жыл бұрын
This video is sensational! You are the Albert Paul Malvino of KZbin.
@derrickadusei79875 ай бұрын
im really impressed . Not all circuits require microcontrollers
@warrenking1815 Жыл бұрын
Excellent video well thought out and clear. Op amps the adjustable wrench of electronics.
@korrige16 ай бұрын
Also I would be happy to join groups so I can learn all the principles that is possible 😊
@874D86 ай бұрын
fantastic video and resources, thank you very much!!!
@bkj2429 ай бұрын
Very good overall OpenPlay tutorial as always well done!!
@bkj2429 ай бұрын
Meant to say OpAmp not OpenPlay? …….
@d614gakadoug9 Жыл бұрын
An extremely important concept, arguably *_the_* single most important concept, is that of the "virtual short circuit" between the inverting and non-inverting inputs. When an op amp is operated closed loop (with feedback) it acts to keep the voltage difference between the two inputs at zero. With real op amps the voltage won't be exactly zero because of finite gain, finite bandwidth and input offset voltage, but it will be very close. Without understanding this, the feedback networks used to determine the behavior of the circuit make no sense. For example, the inverting amp with a gain of -1, as shown at about 20:00 The NII is connected to "zero volts" ("ground'). That means that when the loop is closed with feedback, the inverting input will also be at zero volts. The current from the input source through the 1k resistor (again as shown in the video) will be 1 mA per volt. Let's say we apply +0.5 volts, so we have a current of 0.5 mA flowing toward the input pin (conventional current, flowing from positive to negative). It can't flow into the input pin because of the high impedance of that pin, so where does it go? It MUST go through the feedback resistor. If we have 0 V at the input pin and a 1 k feedback resistor from input to output and that resistor has a current of 0.5 mA through it, the voltage drop across it must be 0.5 V with the input-pin end at zero. The output pin must therefore be negative 0.5 volts. The gain of the circuit is therefore minus one. If we used a 10 k feedback resistor, it would still have 0.5 mA through it, flowing in the same direction. The output would have to go to -5.0 V to allow that current to flow. +0.5 V in, -5.0 V out - a gain of -5.
@duncan8238 Жыл бұрын
Great content as always, I have learned more from this channel than I did in school!
@kellyspoolhall761 Жыл бұрын
Thanks Bill 👍 I am really enjoying your channel!
@stavrosnikiforos77987 ай бұрын
Thank you very much! Awesome work and great explanations.
@TheUnofficialMaker Жыл бұрын
how timely, my "Design with Operational Amplifiers and analog Intergrated Circuits" book by Segio Franco 1988 just arrived this morning! Great lecture and experiments. Sorry to hear about your disaster.
@utkf16 Жыл бұрын
Brilliant lesson thank you
@scottakam Жыл бұрын
Thanks. Always great information.
@fofobadri Жыл бұрын
An excellent and comprehensive lesson and a perfect job. Thank you. You can make a metal detector for us and distinguish metals by sound
@glynhumphreys2144 Жыл бұрын
Please could you zoom out a bit, your hand actions are important when you are giving your lectures, and I think on previous videos itt shows how good an orator you are.
@papajahatmamabaik205011 ай бұрын
You sir explain better. Thank you.
@John-we7jx Жыл бұрын
Very clear instruction 😊
@RyansCustomShopandGearOutlet Жыл бұрын
Very cool! Liked and subscribed!
@jj74qformerlyjailbreak3 Жыл бұрын
I actually thought this was an old video. Had to watch it all just to know my assumption was incorrect. Thanks DBW
@parthpatel1605 Жыл бұрын
Nice explained 👌👍
@arianashfaqakash3363 Жыл бұрын
can you please check the gain equation for the non inverting amp configuration (23 min). i believe that will be (Av = 1+ Rf/Rd)
@fmphotooffice5513 Жыл бұрын
Excellent presentation.
@mspurling2010 Жыл бұрын
Awesome video, thank you!
@MichaelWeaser Жыл бұрын
Technically the regular TL072 op amp does not have a 5.25 Mhz bandwidth, but actually 3 Mhz. The confusion is Texas Instruments have a new variant of that op amp with an H at the end, the TL072H and it does have a 5.26 Mhz bandwidth.
@venkatyalamati3285 Жыл бұрын
Thanks for the quality content as usual ❤
@rickferrara5646 Жыл бұрын
C'mon, no nod to the 741? 😊 Outstanding job sir!
@fjdelahoz2 ай бұрын
Great video. Thanks !!
@mrvnmmb9425 Жыл бұрын
you just cleared me up with the perfect demonstration i'd never understand this in college due to our lazy and illiterate professor's teaching not by passion only for his stomache sake.
@jeetenzhurlollz8387 Жыл бұрын
As usual an excellent video
@DownhillAllTheWay10 ай бұрын
At 17:49 - "The +ve and -ve power supply can be up to 15V" - so we'll just connect it to 18V (9V + 9V) - the chip has no connection for the mid-point of the two batteries, which is used as a pseudo-ground reference.