Learn Electronics Lesson 1. Ohms Law, the most important thing to Understand. Beginners Start Here.
ฝัง
- เผยแพร่เมื่อ 13 พ.ค. 2024
- The first in a series of videos for anyonewho wants to learn Electronics from the beginning. This series is light on math and theory, instead it centers around practical demonstration and experiments, The most fun way to learn electronics on the 'net starts right here right now.
Chapters
00:00 Intro
01:45 What Is Electricity
04:00 Conductors and Insulators
07:24 The Water Anaolgy
09:24 Voltage, Resistance And Current
11:42 The Electrical Circuit
13:50 Ohm's Law
17:44 Feel The Heat
19:57 Ohm's Law Practical Demonstration
25:04 Burn Baby Burn
28:47 What Are Watts?
31:00 Next Time...
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Richard
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Errata:
21:42 I said 2,000 milliAmps when i meant to say 2 milliAmps
GREAT VIDEO!! I can't wait till the next one!!!! I actually have an understanding of Ohm's law now. Excited to learn more, Thank You for taking the time to make these for those of us who just don't know or don't fully comprehend all of these concepts.
Iv learnt something new. I never knew why current was represented by "I" .... NOW I know. 😊😊
@@keithking1985 Yeah it was those pesky french 😅
I want to say thank you Richard. Your videos are falling upon the ears and eyes of a 50 year old newbie. ❤❤❤😊❤❤❤ Love all your work.❤❤❤
As a beginner, i fully understood everything thought in todays video, and the way you teach makes it so easy to remember, given the analogies you use. Thank you so much, cannot wait for further installments in this series.
Thank you 😊
Your on a journey my friend 👍 a brilliant journey.
Thank you my friend, its one that i cannot wait to go on. I've always been fascinated by electronics@@keithking1985
Parabéns pelos videos. Brasileiro chegandi aqui pra aprender com você!
The burned up resistor would have been a good time to talk about magic smoke and the consequences of letting it out. 😂
Thank you so much for these informative and clearly explained videos for the total beginner like myself! Much appreciated!
Another great video Richard.
Thank you for making all these videos, Richard 👍
Thank you Richard ,appreciate your effort to teach us.
Good job thank you
This is so helpful, thank you. I’m new to all of this and you are producing the BEST guides and tutorials.
The burning point, depends on the material which the resistor is made of as well. Thanks for the demonstration
Thank you for doing this. Please continue this series.
Thank you, Richard, and the idea is really good, so thank you also, the guys
You explanation is incredible, thank you!
Great idea to start at the beginning. The series will draw new viewers to your channel.
Very practical descriptions and explanations .. You are providing a real service with these additional building blocks of knowledege .. Even after 45 years in the field it's always good to have a refresher , Thank you Richard ..
great video, hope you continue this series
Looking forward to the next lesson. Very informative.
Thank you you have earned my subscription. Good job you make it easy to follow.
Brilliant. Even I could understand it. Thanks.
Loved you analogy, and your explanation of the limits to the analogy.
In every subject there is always a place for basic information that is clearly explained. Please continue.
the anaology i was taught was a car. the electron is the car. the voltage relates to how much acceleration you are using. the current flow is how fast you are actually going, and the resitance is the type of road, smooth straight road, conductor. muddy uphill road with trees, wheterh brakes are applied = resistance.
Beautiful!
Excellent
Hi Richard,
Thanks so much for talking the time to teach this fascinating subject so well. I am looking forward to learning a lot from you. I like your style of teaching a lot. 👍🙂
This was great thank you
Enjoyed well explained .
very good
I alway wonder how great teacher you are because i Always Learn from you even from the basics ,
Thanks for the video
First class tutorial.
Great explanation
Great video.!
I'm very happy you decided help all of us learn electronics.
Thank you very much for your knowledge of electronics.
i enjoyed that and the burning of a resistor was a nice touch i personally like to blow up capacitors they have a spectacular bang😊
A large capacitor can go bang but TO-220 packages really give a cracking pop. I remember once when I was young building a power supply and I used the wrong pin out on a component package. I powered it up late at night and it blew up like a firework. I quickly went to bed then.
Thank you for taking the time to create and upload this video to youtube
Nicely done, will be interesting to see what real beginners think of it, not just your existing subscribers. Hopefully they will become subscribers!
I enjoyed it....
Thanks for getting started on this project. We're in till the end. 👍🏾
Love the slo mo of the resistor burning v...e...r...y f...u...n...n...y! From secondary school physics I learnt Ohm's Law definition as being: "The Voltage is directly proportional to the current times the resistance when the temperature is constant". V=IxR.
In the old days we used a flexible cable called Vulcanised Rubber Insulated (or VRI) That's how I remember Ohms law. It's always important to share knowledge and pass it on to others.
Great start to the series.
I think these lessons are so valuable, thank you for taking the time to make them,
well,... This was a great video and a great explanation to give a person the general concepts of electricity. I really enjoyed it. I have to apologize for not commenting on your videos lately, but here is what has been going on, I have been going through a lot of your videos that you created... ( if you're viewing numbers are increasing on older videos, that was me Ha ha ha ) I wanted to comment on each one of the videos that I was learning from, but also just wanted to move on to the next one to continue the learning process. you have many videos covering a variety of subjects in electronics lots of stuff on components, lots of videos on test equipment a lot of videos on tracking down a problem and techniques for doing that. All very important subjects. So, seeing this video kind of going back to the basics just to cover new viewers I would assume, and to get everybody brushed up on some of the basics, it never hurts to go over this stuff, and I know more of this is coming. I appreciate it. I hope to be a little more active in making comments even if they are in some of the past videos... Participation is important, and analogies in explaining things are also important all of us have learned from various people certain explanations for how things work. And it never hurts to hear how someone else learned what they know. 🙂
thank you Richard
Nice course, already enrolled.
Everytime there's audio in a slow motion i feel like a drunk person's talking to me, but hey alcoholics can teach you electronics too !
Very good first episode Richard, waiting the next one impatiently !
great question Richard it was franklin who thought that was right but electrons flow from negative to positive, but we conform to the standard that electricity "flows" from positive to negative. In this case think of it is why does the stone want to roll down hill, same deal there is a surplus on one end and a void on the other causing a flow.
Richard excellent video to start the class. Lots of info. but very simple to understand explanations. Thanks for sharing and I’ll be watching for the next class. Cheers mate 👍
Hi, great start 👍👍👍. I appreciate the numbering of the videos this should make it easier to follow along in a logical fashion, cheers.
I'm from Morocco and love your channel. thanks for everything (my English soo bad)
Don't forget to explain that all components are filled with magic smoke before they leave the factory and end up on your bench and to be careful not to let it out cos you can't get it back in....cheers !
The repair videos make me want to learn this so this is a good combo 🤙
Richard, I have been busy with things and wanted to see your Learn Electronics course. I have just watched and thought it fantastic, natural, essentials and inviting, as this is what’s made your channel along with your easy manner a success.
I will be seeing my son and Grandson this weekend where I will be presenting him with some things to get him started, I tried very badly as a father to go down this route and failed, for all sorts of reasons, but being able to watch these tutorials, as well as having a reference aspect, is certainly in my view, excellent.
I congratulate you and look forward to watching further series of tutorials. It’s amazing as a former fireman and armature photographer and camera collector, I discover here again we have the triangle and the relationship of using water flow as a method of understanding and calculation. Triangle of fire 🔥 Heat, Material and Oxygen! Photography Light, Shutter, Aperture so thank you so much! Regards David
Richard
Thank you.
Thank you for the great and informative content.
Thanks
I love going back to basics. It helps you brush up on things. Always welcome.. 👍🇮🇪🙏
P.S. this was one of the best beginner videos iv seen.. I'll direct people here who want to learn.💯
Wow, just found this a very well explained video.
Looking forward to more in the series.
Well done, Sir.
Conventional Current!
You're off to a good start. Perhaps the only clarification I'd add is that virtually every conductor has some resistance. Your classification into conductors, insulators, and resistive materials could perhaps be misinterpreted as conductors having no resistance. But except for superconductors (which you won't find in anything coming across your bench any time soon), everything has resistance. And that can be relevant in some cases (e.g. blown tracks due to short circuits drawing too much current).
Triangle can also be used for the Power formula, P on top, I and V under :)
Awesome thanks, will be watching more.
Definitely enjoyed it. I've been on this learning patch for a few years and i'm excited to see these lessons keep going. You're a great teacher. This week I diagnosed a truck as needing a new engine computer. It wasn't firing the #2 injector. Before ordering a new computer I decided to at least pull the old one apart and see if i could find the problem. I was able to test the module well enough using what i've learned mostly from you to be confident that there was actually no problem with it. I went back and found there was a wiring issue in the truck. Had I not spent as much time watching your videos as I have, I would likely have made a costly mistake.
Rich Richer Richard of Knowledge! Hi :-)
thanks
Great teaching and very easy to understand, I will definitely will be following your course, well done and thanks for your efforts 👌
Just discovered you had started this new series
And yes do more it was very good just what I wanted to see
Great video Richard! Like others have said, you are a good teacher
Thank you Richard, I like your teaching, I hope that at the end of the course, I can make my own systems and repair them too. The practical explanation are master, I love it. I want to learn to build controlling and regulating systems to use around my home. Thanks and be blessed in Jesus Christ name amen.
Great session, thanks.
Great video can you do some equations with ohms law please😅 so we know how to work out a fault on a pcb. Great work keep it up...
Thanks for taking the time to do these videos. You seem old school with you teachings, I have followed many things on tube and I feel confident I gonna learn a lot on this channel. Been tinkering with electronics since I was young, but decided now late 40's to actually learn this stuff. I have loads of caravan PSU's/chargers on my bench I want to try and repair. So hoping I be able to fix them with intentional logic opposed to I think this does that, so i try that. Looking foward to the next lesson.
When will you upload next episode??
I am a beginner and i found your video is very usefull. Thank you so much.
Very interesting and easy to follow, looking to get into electronics and loved this video, looking forward to the next one. Thanks for doing these
Nice one . ( let’s not mention that electrons flow in the reverse direction to the current 😂)
Thank you very much for the analogy and great explaining. As for the question that you have in the end of the video, i was taught the electrons goes the opposite way and also the current, so the right way is to say that the current goes from - to +, but this way will disorient the way of learning for begginers, so to make easy for them we always say the opposite from + to -!! I don't really know if this is 100% right ....we just are told so.
Will wait to see the second video 👍👍 great job, i really appreciate all of your videos...very handfull and understandable.
Great explanation, thanks
Can you please do a video on ground? Ground just meaning the negative side of the battery in the case of circuits? How about “hot ground”? Differences in the meaning of ground in AC vs DC, etc. Thanks for the videos!!
Excellent sir! Your teaching style is easily comprehensible, even for the beginner that I am to this new-to-me science (electronics, that is). I look forward to this series of videos. Thank you
I didn't realize it was a full moon tonight.. Just playing, but very good explanation for beginners, the waterpipe method is what I was taught as well and for practical purposes and circuits it suits most applications just fine. Also, points to Griffindor for the quantum acknowledgment.
Hi Richard, may be worth mentioning that there are variations of sysmbols. IIRC the wiggly resistor symbol(ANSI) was, in the UK, superceeded back in the 60'sor early 70's? with a new international standard (IEC). Must confess I prefer the wiggly one 🙂
Thank you so much for this series🙏 Your analogies and visual explanations are really helpful. Ive been trying to understand some of this stuff for a long time, but couldn't get my head around it. This is the first time I've been able to fully visualise, understand and take in the information. Thank you. 🌟🌟🌟🌟🌟
Great explanation Richard, as always, on point, i use a hydraulic circuit analogy when explaining the electrical circuits on tractors etc, mostly because the hydraulic oil returns to tank.
I learned it this way too. The pressure is the height of the water in the tank. The battery is a pump that pumps the water upwards into the tank. There is a pressure drop on pipes and possibly a turbine in the circuit, which represents the resistance.
11:43 - You might tend to think the water analogy falls apart here as you mentioned; but, when you consider the source of the water (the earth), and water's tendency to return to the ground, the analogy _does_ "hold water" in this sense. And just as it takes energy to generate an electrical source (chemical for a battery; mechanical for a power plant), it takes energy to put water into the big water tower from out of the ground (and, through gravity or other force, returns to ground.)
Heya, love this explanational video it's so cristal clear well done. Perhaps it is an idea to go so far that after the theory explanation it might be nice for the subscribers to build an FM/AM radio themselves under your learning
12:50 - Technically the water does have to flow back to the source: the ground. A pump is needed to get water out of the ground and eventually returns to ground (whether directly by gravity or indirectly through evaporation and precipitation).
Would like something about resistance in AC mains circuits :-)
Remember we normally talk about conventional current where it flows from the positive to the negative, as apposed to electron flow which of course flows from the negative to the positive.
One of the topics of part two...
@@LearnElectronicsRepair I should become a mind reader, or do the lottery more often 🙂
@@LearnElectronicsRepair It is the absence of electrons or "Holes" that flow from positive to negative and electrons in reality flow from negative to positive but as the previous replyer stated, conventional flow dictates the opposite for ease of understanding. I very much enjoyed watching this video and look forward to watching the next one. It reminds me of electronics class in high school. Great job and see you on the next one!
One thing need is to realize there is a thing called non-ohmic conductors and they are pretty common. The resistance they offer depends on how much voltage is applied. An example is a silicon or germanium diode. It only conducts in one direction. Below .6 -.7 volts it begins to conduct. adding .1 volt is enough to cause to burn up. NE-51 lamps are non-ohmic conductors. At about 67 volts the begin to conduct. The footage drops to 51 volts If they are connected to power they conduct so much current that they instantly burned up. To protect them we put a resisted in series with them. LEDs are non-ohmic but they too need a protective resister. Ohmic conductors are essentially metals and carbon.
This was great, Richard. Thank you for breaking this down to 3rd grade level. 😊😊 Would you mind writing out the different efforts each point of the triangle? My 67 year old mind sometimes has trouble with moving term around in an equation.😮
Very enjoyable. Much prefer practical examples. I find the maths i shut down. Cant wait for the next video. Thank Richard 😂
The math is simple and useful. So it is worth doing. Excess current is destructive. So you use the formulas to make sure you don't fry components before you hook them up.
Hi, Richard. I'm also a beginner, and I wish I could understand your videos when you're reading from schematics or making one from scratch; I tried my luck on a video of yours, which explains a little about transistor in series from an amplifier, but I couldn't understand anything. Would you please consider making a weekly series of videos featuring "The electronic component (or part) of the week" and tell us everything we need to know about it? Not in general or grand scope of things, but components one needs to know when investigating an issue on a laptop/desktop circuitry.
For example, MOSFETs. How can one tell if one is PNP or NPN? As for capacitors, how can I visually identify and come to the conclusion a certain capacitor is an ordinary one that a laptop doesn't need to power on or if that capacitor is part of a configuration? Stuff like that is where the details lie and I think your take on those topics could go a long way for beginners.
(I'm sorry for long post)
I also teach in water terms when I need to :) what can be good to include later on is the correlation of how resistors handle power with their rating and operational voltage/Current, such as why you need less current to burn a high value resistor of same wattage but you need to increase the voltage to do so instead. as you in practice need higher voltage and less current to overload the resistor the higher value in ohms it has and that it is the total power dissipation that burns the resistor in the end :)
great video Richard as i remember it from school just in the netherlands it is U is volts I is amps R resistance.... but i had to laugh with the slowmotion you sounded drunk in the slowmo 🤣🤣 think this will help the real beginners we all started here at ohm's law
Leren ze serieus nog steeds U? 😶
Voltage is "E" or Electromotive Force. That makes it all as easy as PIE
12:55. THE PUMP WOULD BE THE BATTERY AND THE PRESSURE BY PUMP WOULD BE VOLTS AND THE GALLONS OF WATER IS AMPS. EXACTLY THE SAME AS ELECTRICITY
The omega symbol is for "Ohms"
My farther used the same water analogy with me…I said..yea dad..butt I already know how to swim..what Im trying to do is trace the short in that 66 corvette…he just shook his head with sadness in his eyes and asked…are you sure your my kid?..I said..I didnt get these eyes from the milk man…he laughed and we found the short together..fusible link..miss ya Pops..