I highly recommend your videos to anyone who needs to establish a solid base for learning. Very refreshing and informative to watch.. I especially enjoyed the problem solving which reinforces the learning. After 60 years (at 81) I still truly love electronics!!!
Thankyou! I am an electronics novice and I get very frustrated by so called "learning" channels who don't explain what functions individual components are doing in the circuit. This is brilliant! I have subbed.
I like that after all the explanation of the amplifier circuit at about 1/2 way through the video he stops, looks at the camera for a moment and states "except it can't work".
It’s important to understand that voltage does not flow. It is just a measure of potential energy between 2 points. Usually between a node in the circuit and ground or between 2 points. Current is the flow of electrons (or holes depending on how you were taught EE). You must have a potential (voltage) between the 2 points in order for current to flow from the first point to the other. A load is usually placed between the 2 points to perform some function. A resistor is a load used, for example, to keep the current between the two terminals of the battery from quickly draining the battery. So when he says there is 10 volts at some point in the circuit, he is implicitly saying there is a potential of 10 volts between the point and ground.
I'm an electrical engineer with 40 years experience and I watch videos like this to help me understand how I can help my students better and you know I just saw your video man this is awesome
I loved the lesson, total flashback for me of when I enrolled at ITT-Technical Institute for an EET Degree back in 89". You reminded me of my Electronics fundamentals teacher Mr. Kotwika, who was a long-time Navy instructor and began teaching in the private sector at ITT.
I remember these days of lecturing. This fellow really knows the subject. He shows it by telling us (his students) practical uses for the information. Most would just say, "The signal is amplified through the addition of a resistor here, and then one here on the negative side of this AC input." He could just stop there, smile, and take a sip of coffee. But, no - he really does know, and he wants us to know too... so he shows things would be like if this shorts, or this opens. I was enthralled through this entire lecture, and certainly plan to see as many as I can. Thank you.
Any aspiring novice getting started in electronics should see this video. As a former instructor and engineer I was absolutely taken aback at how elemental and complete basic instruction this video is. This is the epitome of Transistor Design 101. Takes me back to my days in 1962 when I started my transistor engineering classes. Great work.
Excellent demonstration and lecture. Thank you very much for your contribution. I studied Electrical and Electronic Engineering at my undergraduate degree, about 25 years ago. You are the first lecturer, I have ever heard, that actually clearly explained why a transistor arrangement like this, actually has inverting characteristic of the input signal voltage. You are a brilliant teacher, as far as I am concerned. Thank you again!
Great lecture! A natural teacher. Awesome explanation of the DC blocking properties of a capacitor, you often hear of isolation and ac coupling in instrumentation . I spent much of my career in the lab dealing with instrumentation, various transducers, and digital signal processing. Instrumentation amplifiers are so important in testing and prototyping systems. Luckily I could just pick out an Instrumentation Amplifier IC from Analog Devices. Usually requires positive and negative voltages to power the chip
Excellent lesson, master! Thank you. A supposedly week long lecture about transistor biasing was discussed by you in this almost an hour video. Very clear and concise. I also learned new, why that capacitor on the emitter side should be there. All the best!
Oh wow, this was the explanation of transistor amplifiers that I've been waiting for my whole life. I've seen some great explanations about the math and calculating the values, but I've never really understood why any of these resistors are even there in the first place and what effect they actually have on the circuit.
This 1000 times better than what I went through. I am beginning to believe our lectures never mastered what they taught us. They were just teaching by memorizing
I sure do know a lot more about small signal amplifiers than I did before watching this video. Thanks for this great lesson, consider me subscribed! You really do have a way of explaining what is going on in these circuits. The circuit really makes sense now, remarkable! Thanks again!
This is very good. I have minimal electronics knowledge, never understood much about amplifiers beyond basic transistor operation. The tutorial was easy to follow and I now know a lot more. The logical step-by-step build up of the circuit is an excellent approach.
The straw is such an excellent analogy of the transistor because what you're doing is pinching the bass diner in majority carriers and I like your fact that I really like the example of the minus sucking instead of the positive pushing makes a lot more sense
Great lecture. And I’m so impressed at how, in a video delivered more or less like a real lecture with almost no editing in postproduction, how infrequently the speaker says “um” or “er”. Master level public speaking and teaching skills!
I've been trying to learn about audio effects, starting with transistor based circuits for boosting a signal, overdrive, etc. It has been surprisingly complicated! This is one of the best explanations I've found in the last 3-4 months. Your explanations are outstanding.
way of your teaching style is amezing Sir , my teacher tried his best to make me understand about this but he couldn't , this video helped me a lot to understand ...
Clear and concise presentation. I particularly like the way you reinforce the understanding by briefly revisiting an earlier explanation of the said part. Probably the best explanation of small signal amplifiers that I have come across. Excellent!
Really like your practical approach to problem solving. Transistor calcs are very long winded and as you point out very rarely work in the real world due to variation in tolerance.
I wish he was my electro teacher back then 25 years ago, instead of someone that went into Bode diagram intersections when you did not even understand how a capacitor was working... :D
I'm familiar with signal amplifiers, although I normally use op-amps. I use formulas from the datasheets to determine values for resistors and capacitors for the circuit behavior I want. However, I really didn't understood how all of these physically works. That is, until I watched this video. If I wish I had a professor that explained it like he does -- formulas would've made more since back then, making them easier to learn.
Very useful lecture. Thank you! I was a little puzzled by the positive current flow perspective at the beginning. I was taught that electrons go from the cathode/emitter/source to the plate/collector/drain and are attracted to (sucked to, so to speak) the positive terminal of the B+ battery. Hearing that the current was sucked towards ground got me confused for a few seconds while I sorted out your perspective.
Really well explained. I subbed. You are a great teacher. I'm 4 years into learning electronics, so am always regoing over what i've learnt. You help make this clearer.
Thank you very much for this luminous exposition of the subject. I have taken electronics courses in college quite some time ago, got excellent grades, but never reached this level of deep comprehension of the topic after listening to your lecture. My understanding was based more on rote mathematical heavy guns rather than the pragmatic simple method you use. A testimony that a good teacher is hard to come by and he can make a big difference.
Great class, thank you. If you ever decide to use a signal generator and oscilloscope to demonstrate gain and distortion, etc. that would be a welcome addition to an already great class. Thank you.
Microphone, transformer, battery, transistor, PA system and soda straw in just the 1st few minutes! I didn't wait around for "Imagine water in a pipe..."
he must of had the radio shack 130 & 1 science kit. and wondered why those resistors and capacitor are always on terminals of the NPN and PNP transistor's in the circuit amplifiers you build . They gave explanations ,some times, but in this depth.
Thankyou for your time in sharing yr knowledge. Fully explained. explained. Ill have to rewatch with more time and care as my mind was thinking if you had the bottom side resistor and not the top then it would be in phase. Im wondering about mosfets. And thinking of a circuit that switches at a frequency say 50khz and feeds the ac signal through most then shorts out the 50khz - im thinking how they do band width modulation. Ill have to check yr site, but if not can you do such a comprehensive vid on bass and trebble, Ive always hated the graphic equalizers as in the studios they like have a hundred etc... so here is public joe pissing around with his 5 or 7 band wheres the old bass and trebble with loudness sounded much better and quicker / simple to adjust without screwing the sound completely up. Also - the "magnetic amplifier" Ive always dreamed of building my own amp with something like six amps, 2 bass / 2 mid and 2 trebble with the two amps split, one value and the other amp transistor and being able to adjust between the two and I figure you adjust the three twins with the balance of tone between valve and mosfet with a Master Volume.
I have worked with solid-state electronics all my adult life and have never seen a circuit that includes a lower half of the bias network on the base of a transistor. To me, the resistor from the base to ground has ALWAYS been missing and I've never found an engineer who could explain to me how the transistor was properly biased without one.
seriously. ……..this 50 times the quality lecture than ANYTHING i ever got in college! time well spent watching this incredible video !
I have very rarely met a person whose concept is so clear in teaching, master of his subject, full regards
I highly recommend your videos to anyone who needs to establish a solid base for learning. Very refreshing and informative to watch.. I especially enjoyed the problem solving which reinforces the learning. After 60 years (at 81) I still truly love electronics!!!
This is brilliant. The fact that you even mention the different faults in the end helps so much.
Thankyou! I am an electronics novice and I get very frustrated by so called "learning" channels who don't explain what functions individual components are doing in the circuit. This is brilliant! I have subbed.
All about electronics' Piano of Doom
@@eitantal726Thankyou!
I like that after all the explanation of the amplifier circuit at about 1/2 way through the video he stops, looks at the camera for a moment and states "except it can't work".
That guy explains everything, great lecture.
Like my father explaining how life works... Then says ..
Waiting for that😊😅
Yeah that was funny
It’s important to understand that voltage does not flow. It is just a measure of potential energy between 2 points. Usually between a node in the circuit and ground or between 2 points. Current is the flow of electrons (or holes depending on how you were taught EE). You must have a potential (voltage) between the 2 points in order for current to flow from the first point to the other. A load is usually placed between the 2 points to perform some function. A resistor is a load used, for example, to keep the current between the two terminals of the battery from quickly draining the battery. So when he says there is 10 volts at some point in the circuit, he is implicitly saying there is a potential of 10 volts between the point and ground.
"Except it can't work" This is a fantastic video. Thanks so much
Best practical description of amplifiers I've heard yet. The troubleshooting was icing on the cake.
I'm an electrical engineer with 40 years experience and I watch videos like this to help me understand how I can help my students better and you know I just saw your video man this is awesome
I used this circuit with a coil and variable capacitor to make a simple radio back in 1967. Thanks for the lecture.
I loved the lesson, total flashback for me of when I enrolled at ITT-Technical Institute for an EET Degree back in 89". You reminded me of my Electronics fundamentals teacher Mr. Kotwika, who was a long-time Navy instructor and began teaching in the private sector at ITT.
As everybody else has said; A 'brilliant-lecture' that is 'highly-informative'! Bravo!!
This is real expertise in electronics and in teaching. Congratulations Sir.
I remember these days of lecturing. This fellow really knows the subject. He shows it by telling us (his students) practical uses for the information. Most would just say, "The signal is amplified through the addition of a resistor here, and then one here on the negative side of this AC input." He could just stop there, smile, and take a sip of coffee. But, no - he really does know, and he wants us to know too... so he shows things would be like if this shorts, or this opens. I was enthralled through this entire lecture, and certainly plan to see as many as I can. Thank you.
That's because this lecture isn't aimed at circuit designers, it is aimed at technicians who will be troubleshooting the circuits.
Amazing lecture. Starting from scratch until the full circuit. Congratulations. I wish I had you as a teacher years ago 🙂
Excellent explanation, I learned small signal amplifier design 40 years ago. This was a great refresher. Thanks again
Any aspiring novice getting started in electronics should see this video. As a former instructor and engineer I was absolutely taken aback at how elemental and complete basic instruction this video is. This is the epitome of Transistor Design 101. Takes me back to my days in 1962 when I started my transistor engineering classes. Great work.
Excellent demonstration and lecture. Thank you very much for your contribution. I studied Electrical and Electronic Engineering at my undergraduate degree, about 25 years ago. You are the first lecturer, I have ever heard, that actually clearly explained why a transistor arrangement like this, actually has inverting characteristic of the input signal voltage. You are a brilliant teacher, as far as I am concerned. Thank you again!
Wow. What a teacher. Absolutely stunned at how simple you made this to understand
Thank you, the first video that actually explained it in depth.
I have been using the 2N2222 for years as a switch and now I find how 8t works as an amp. Thanks for a great explanation.
this is the most descriptive explanation of the a transistor amp i have found so far. thank you for making this video.
Great lecture! A natural teacher. Awesome explanation of the DC blocking properties of a capacitor, you often hear of isolation and ac coupling in instrumentation . I spent much of my career in the lab dealing with instrumentation, various transducers, and digital signal processing. Instrumentation amplifiers are so important in testing and prototyping systems. Luckily I could just pick out an Instrumentation Amplifier IC from Analog Devices. Usually requires positive and negative voltages to power the chip
Учите русский язык. Ничего не понятно
Excellent lesson, master! Thank you. A supposedly week long lecture about transistor biasing was discussed by you in this almost an hour video. Very clear and concise. I also learned new, why that capacitor on the emitter side should be there. All the best!
Oh wow, this was the explanation of transistor amplifiers that I've been waiting for my whole life. I've seen some great explanations about the math and calculating the values, but I've never really understood why any of these resistors are even there in the first place and what effect they actually have on the circuit.
This is by far the best explantion I have ever seen on this topic. Thank you very much.
This is the best description of transistor operation I have seen.
Absolutely the best video I've found on this topic!
This 1000 times better than what I went through. I am beginning to believe our lectures never mastered what they taught us. They were just teaching by memorizing
He is going so deep on the topic... Wonderful
This is great. Thankyou. After years spent try😅ng to understand this stuff you bring a real clarity to the subject.
This video is by far your most complex, Bob. Especially, since you said trial and error, is the best way to determine the component values!
That was near perfect. I wish I had been able to learn from this guy 40 years ago.
I sure do know a lot more about small signal amplifiers than I did before watching this video.
Thanks for this great lesson, consider me subscribed! You really do have a way of explaining what is going on in these circuits. The circuit really makes sense now, remarkable!
Thanks again!
This is very good. I have minimal electronics knowledge, never understood much about amplifiers beyond basic transistor operation. The tutorial was easy to follow and I now know a lot more. The logical step-by-step build up of the circuit is an excellent approach.
Wow, finally understand how transitor work!!!!
one of the lectures i have ever had on small signal amplifiers.IT HAS NEARLY ANSWERED ALL MY QUESTIONS IN JUST ONE LECTURE
The straw is such an excellent analogy of the transistor because what you're doing is pinching the bass diner in majority carriers and I like your fact that I really like the example of the minus sucking instead of the positive pushing makes a lot more sense
Best explanation about the working of an ssa I ever heared! Great video!!!
I really appreciate the Troubleshooting part at the end,
troubleshooting is where the thinking and understanding happens.
Great lecture. And I’m so impressed at how, in a video delivered more or less like a real lecture with almost no editing in postproduction, how infrequently the speaker says “um” or “er”. Master level public speaking and teaching skills!
Thank you for the suction idea as an analog to explain resistance. I understood that just fine.
I've been trying to learn about audio effects, starting with transistor based circuits for boosting a signal, overdrive, etc. It has been surprisingly complicated! This is one of the best explanations I've found in the last 3-4 months. Your explanations are outstanding.
way of your teaching style is amezing Sir , my teacher tried his best to make me understand about this but he couldn't , this video helped me a lot to understand ...
This is an absolutely excellent lecture - well done
Clear and concise presentation. I particularly like the way you reinforce the understanding by briefly revisiting an earlier explanation of the said part. Probably the best explanation of small signal amplifiers that I have come across. Excellent!
Really like your practical approach to problem solving.
Transistor calcs are very long winded and as you point out very rarely work in the real world due to variation in tolerance.
You just cleared up decades of fuzziness on those small-signal amplifiers. Spelling out the individual component functions helps a lot. Thanks.
As an eletrical student this is by far the best video I have ever watched, thank you!
Thank you! We all see these circuits with resistors and capacitors, but no one explain their function in the circuit.
your presentation was very clear, especially for those of us who don't speak English daily.
Amazing! Impressive! I've never seen anyone "reason" circuits this way! Thank you very much.
I remember learning this way back in 1973 in 1st year college.
Can't find more likes to thank this lecture. Its soo imformative. Thank you. +1 new subscriber
You are the best 👏👍
I wish he was my electro teacher back then 25 years ago, instead of someone that went into Bode diagram intersections when you did not even understand how a capacitor was working... :D
I am so happy from the bottum of my heart to met you teacher🙏
This is brilliant. A super practical lecture from an experienced one telling the the things with a simple and intuitive words. Admired.
Nice video! Very well explained and concise.
Excellent lesson, many thanks. You are doing great job!
Excellent, thanks. Your education skill is amazing.
I'm familiar with signal amplifiers, although I normally use op-amps. I use formulas from the datasheets to determine values for resistors and capacitors for the circuit behavior I want. However, I really didn't understood how all of these physically works. That is, until I watched this video. If I wish I had a professor that explained it like he does -- formulas would've made more since back then, making them easier to learn.
great video.the whiteboard and eraser is a game changer by taking away components that are not necessary for the instruction at the moment.
John
Very useful lecture. Thank you! I was a little puzzled by the positive current flow perspective at the beginning. I was taught that electrons go from the cathode/emitter/source to the plate/collector/drain and are attracted to (sucked to, so to speak) the positive terminal of the B+ battery. Hearing that the current was sucked towards ground got me confused for a few seconds while I sorted out your perspective.
Really well explained. I subbed. You are a great teacher. I'm 4 years into learning electronics, so am always regoing over what i've learnt. You help make this clearer.
Just brilliant! I've been looking for such a video for many many years!
Thank you. Guys like this make this world just a little better! One learning video at a time...
Thank you very much for this luminous exposition of the subject. I have taken electronics courses in college quite some time ago, got excellent grades, but never reached this level of deep comprehension of the topic after listening to your lecture. My understanding was based more on rote mathematical heavy guns rather than the pragmatic simple method you use.
A testimony that a good teacher is hard to come by and he can make a big difference.
That was a lot of information and insightful. I learnt a lot. I am saving this in my electronic folder.
Thank you.
Lucky me to have come across your channel.
Even I have understood now.
Great class, thank you. If you ever decide to use a signal generator and oscilloscope to demonstrate gain and distortion, etc. that would be a welcome addition to an already great class. Thank you.
Excellent video and explanations, thank you!
..from last comment, Yes Its a amazing explanation, any people can learn from your channel Mr Teacher!!, very nice to listen!, thank you!
The best class which I have ever attended
You are an excellent teacher.
That is really informative. So detailed and of course truly explained. Nice. Thank you so much for this helpful video.
I wish that most teachers at a university would have his talent of teaching: understanding what is and is not logical to newcomers in the subject.
Microphone, transformer, battery, transistor, PA system and soda straw in just the 1st few minutes!
I didn't wait around for "Imagine water in a pipe..."
11:09 - Wow! I wish I could draw a schematic that quickly!
he must of had the radio shack 130 & 1 science kit. and wondered why those resistors and capacitor are always on terminals
of the NPN and PNP transistor's in the circuit amplifiers you build . They gave explanations ,some times, but in this depth.
EXCELLENT TEACHER...subscribed!
Thankyou for your time in sharing yr knowledge. Fully explained. explained. Ill have to rewatch with more time and care as my mind was thinking if you had the bottom side resistor and not the top then it would be in phase. Im wondering about mosfets. And thinking of a circuit that switches at a frequency say 50khz and feeds the ac signal through most then shorts out the 50khz - im thinking how they do band width modulation. Ill have to check yr site, but if not can you do such a comprehensive vid on bass and trebble, Ive always hated the graphic equalizers as in the studios they like have a hundred etc... so here is public joe pissing around with his 5 or 7 band wheres the old bass and trebble with loudness sounded much better and quicker / simple to adjust without screwing the sound completely up. Also - the "magnetic amplifier" Ive always dreamed of building my own amp with something like six amps, 2 bass / 2 mid and 2 trebble with the two amps split, one value and the other amp transistor and being able to adjust between the two and I figure you adjust the three twins with the balance of tone between valve and mosfet with a Master Volume.
Thank you, this is brilliant. Well done ❤
One of the best explanations ever
I have worked with solid-state electronics all my adult life and have never seen a circuit that includes a lower half of the bias network on the base of a transistor. To me, the resistor from the base to ground has ALWAYS been missing and I've never found an engineer who could explain to me how the transistor was properly biased without one.
You are the Dr Najeeb of electronics education!
Yes. This is pure Gold!
I fell down the well when voltage dividers were introduced. Great video but I'm lost. Hopefully the prior videos will help clear it up for me.
Keep up the good work sir.
as nearly all comments said that, very nice. Thank you.
Impressive lesson, chuckled when you said you can design or just build it
This was super helpful. Thank you.
A JOB WELL DONE KEEP IT UP SIR.
Excellent lesson. Thanks.
Absolutely excellent!
excellent lesson !
Thank you sir. Great lecture.
I tried all this failure modes in simulator (LT Spice) and I found this to very interesting. :)
I love your oscilloscope.
Thanks Great Video Presentation
Thanks Great Video Presentation Helping Others Means Helping to God