That feel when you're an electrical engineer already and still watch Afrotechmods, because he makes good videos.

@FunScientifix

7 жыл бұрын

billigerfusel right in the feels 💛

@LexyGamesLB

6 жыл бұрын

Same

@spacy50

6 жыл бұрын

billigerfusel

@bettymaevilla9893

5 жыл бұрын

I want to be an electical engineer too. ❤

@Joe-bu9ei

5 жыл бұрын

Same here, i'm near retirement after spending 41 years in electronics trade. Why am i watching this video? Good video for youngsters to learn from. Please stick to battery power until you know what you are doing. Stay safe. @billigerfusel

it's videos like these that make me second guess why I'm in college learning this stuff when amazing people like you explain it so much more thoroughly than any of my professors ever could, and it 's their JOB.

@XanthiumIndustries

2 жыл бұрын

we have a youtube channel that deals with Arduino,ATmega328P,Java,Serial programming ,robotics. So if you like these stuff do Subscribe. Sorry for annoying

Great video!

@ArsyadKamili

7 жыл бұрын

Woah, you're actually here. Just to let you know, I love it when you explain a 'somewhat complex' circuit using your Keysight. And when you start taking notes and do calculations, that's when I feel somewhat advanced and professional. XD Love your vids, thanks.

@himanshu9559

7 жыл бұрын

GreatScott! You too do great job

@louisciamillo8690

7 жыл бұрын

Hey scott! I love your videos!

@FunScientifix

7 жыл бұрын

wohooo. hiii

@lvb1b463

7 жыл бұрын

Great Scott!!

Interested in learning about wireless power? Subscribers can get up to 80% off my course Wireless Power to the People - Wireless Charging 101 on udemy using the coupon code "KZread" www.udemy.com/wireless-power-to-the-people-wireless-charging-101/?couponCode=KZread

Sir... don't ever die, please! You are the best teacher I've ever had, and we're not even face-to-face! Your content hits the zen spot for understanding something that used to seem like an off-world language to me. With the deepest respect I can muster, I thank you. Leo.

@gordon9177

Жыл бұрын

I agree.

Your videos are Awesome! It took me 2 years to fully understand all of these things myself, if I would have found this channel beforehand it would have taken 2 days. I hope your videos get to as many enthusiasts as possible! Thank You!

I love how you show real world examples and all the sparks and fires. It makes it a lot more engaging especially so when you know the consequences of doing something wrong has very real potentially dangerous outcomes.

Afrotechmods you are an amazing teacher, these videos always clear stuff in my head despite doing electronics for so long your understanding of the topic is very very impressive.

62 and just now learning about electronics. I might have found interest years ago if somebody would have explained it the way you do. Subscribed and gonna check out some more videos. Thanks!

God bless you man. Please keep up this good work. I am from infosec. I wanted to learn about electricity. I always learn anything by visualizing and by imaginating it. So, your animated videos are very useful for visualization in mind. Thank you so much

@kirillvishnevsky6327

7 жыл бұрын

Ashok Dewan Waaaait a second. I am from infosec too and I want to learn about electricity😑

"bad conductor, like this... er...dried out piece of carrot" has to be the most unusual choice of poor conductor to-hand I've seen, lol. Brilliant video. You have really helped my son learn the basics of electricity today, thanks for making these basic vids along with all your other awesome vids.

I've only watched this video and your LED video, and so far these two videos made by presumably one guy has taught me infinitely more about electronics than several lessons at school ever did. And this was a lot more fun than those lessons too.

At 0:22 - 0:23 you can watch the little LED's soul being lifted to LED heaven

@renae9450

5 жыл бұрын

this comment made me cry an LED tear..

@epiendless1128

4 жыл бұрын

0:24 "I'm not dead." 0:26 "You soon will be." 0:27 "He's died."

@rudolphguarnacci197

4 жыл бұрын

Poor LED was sentenced to the electric chair

@someguyontheinternet-

4 жыл бұрын

Bwahahahahaha!!!

@princey_06

4 жыл бұрын

Idaho Made bmwahahah

The best tutorial about electronics on KZread Great Job👍👍👍👍👍👍

I really appreciate all the detail in your videos and when theirs a lack of detail you refer us to an explanation in another one of your videos. Electronics is my biggest engineering weakness and so what better thing to do then to learn it, and with your help I can. Thanks -Jackson

Wow! This is totally electronics for dummies. Thank You! This is what I need.

afrotechmods, your videos are superb, waiting for the next one!

Great video! The extra detail you put in describing how it works helps a lot. Examples both written and in performed in real world are excellent. More examples the better! I've watched multiple videos on resistors but I learned the most from yours. Looking forward to more videos.

@jollyscaria1922

Жыл бұрын

The ratio 0f r.ms value the average value of an alternating quantiy is called frim factor .. Rms .value /average value 1m£2 /=€\21M2€m=1.11.

another great video from one of the best electronics channels on youtube. more please - happy to sit through adverts for your content!

@VitaminB88

3 жыл бұрын

⁷

Nice videos, all of them. As a field service engineer for 30 years (retired now) I'll use your videos for examples to my kids. Well done.

came here because my physics teacher can't explain well- 👁👄👁

Oh my God! Thanks so much for that comic! Everything makes sense now.

Thank you! :) My professor spend long time rambling out words that to me give no sense, but now I understand much better!

best explanation about resistance i understod by seeing this video with experiment and by knowing about wich colour have what amount it i really a great video

muy bueno el vídeo, me vino bien toda la información!! saludos de Argentina

explosion at 5:53 made me jump from my chair 😂 for some reason I was concentrated on something on the screen and when the explosion happened, it made me jump

@castigohd

4 жыл бұрын

@Badr Ahmed headphones actually... yes

@pinballplayer

3 жыл бұрын

that poor Raspberry Pi...

Great videos. Very well explained and blowing up things intermittently ... priceless.

I took notes & saved it to Microsoft Word, It was very helpful when I setup my LEDS for my R/C vehicles.

Why am I buying resistors when I can just use a dried out piece of carrot?

@ArsyadKamili

7 жыл бұрын

Sir, you've made my day.

@superdau

7 жыл бұрын

I don't know about you, bu I always had problems tinning the ends of the carrot. That's why I started using resistors.

@tablatronix

7 жыл бұрын

A new unit of resistance? The impedance of this circuit is 3 dried out pieces of carrot.

@makerKID5

7 жыл бұрын

tablatronix 😂

@TheOswald42

7 жыл бұрын

ys, you can add it or slowly sandpaper it to desired resistance

question: so could I also place the resistor BEFORE the LED then, instead of after as you have here? seems if actual current is flowing from neg to pos, I'd want it to traverse the resistor first... or is the placement of the resistor unimportant because it affects the circuit as a whole?

@TealJosh

5 жыл бұрын

Well, here's the thing. Voltage and current flow are about voltage differential. You have to imagine that there's someone pushing the electrons at the negative side, but there's also someone pulling them on the positive. No matter what side the resistor is on, the current will flow just the same through the led.

I wish this guy still makes electronics videos. He's actually one of the best.

@gordon9177

Жыл бұрын

just check, last video he made was 5yrs ago.

Thanks for actually showing what happens when you run too much current thru an led, instead of just saying 'something bad will happen' or 'you don't want to do that' like the other videos!

Thank you for this video! I have a pretty basic question here-- I see you followed your conventional current flow diagram when wiring up the 9v/LED/resistor. Why did you not wire it up according to neg to pos electron flow? If the electrons flow from the anode and hit the LED before the resistor, how is the resistor doing its job? It seems as if the resistor would serve no purpose after the high current flow already the LED. What am I not understanding correctly?

@seanlikestoeat

4 жыл бұрын

I have the same question! Someone please answer!

@Lemonade6969

2 жыл бұрын

@@seanlikestoeat lost all hope, 4 years and still no answer

@budgiefish

2 жыл бұрын

Think about the current flow in a circuit as a whole - where does the current go OUT of the led in that case? If you connect one leg of the LED to a high current source like a 12v car battery, but leave the other leg disconnected, what happens?

In your simple circuit with a 9V battery, LED, and resistor @5:58 I see the resistor on the anode side. I've seen this before and know it works but never understood why. Can you explain? If electrons flow from negative to positive I would think that this location is "too late" to save the LED. Wouldn't it be more appropriate to have the resistor on the cathode side?

@joelembiid3105

5 жыл бұрын

Its all about the push process brah

@runeklok

5 жыл бұрын

In this case it does not matter which side the resistor is located in the circuit, so long as it is present. The omitted part of the video does not detail the fact that the entire circuit is in so called "series," meaning that every component is tied end to end with each other. In this format, the current is determined by the circuit voltage divided by the entire circuit's total resistance. The cool part of this setup is that the resistor and LED will both experience the same constant current in amps while having different voltages, since the individual component voltage is current times resistance. The only concern of resistor placement would be if the circuit was so called "series-parallel" where a drop in voltage could cause power problems in other branches of the circuit. Another concern on resistor placement would be purely for safety concerns if you wanted to limit a particular side of the circuit's current that might be exposed to human interaction, say a light switch.

@dontbetonit813

5 жыл бұрын

Richard Forester Seriously don't do anything with electricity take up macrame .

@harveysmith100

5 жыл бұрын

You are correct in your thinking but it will resist the flow in the entire length of the circuit, from battery back to the battery.

@ryanli8926

5 жыл бұрын

In this case (since the circuit is in series), the current at any point is the same as the current at another point. What dictates current is the overall resistance. Resistors don't "use up" current in order to save the LED, but instead limits it overall.

This topic never gets old. Subbed

3:50 has done a much better explanation than anything anyone else has ever told me.

If electrons actually flow from negative to positive, could you have placed the resistor in series with the cathode side of the LED and achieved the same function?

@lekshmyarun4127

5 жыл бұрын

Actually electrons flow opposite to the flow of negative charge....

My friend told me how electricity is measured and I was like Watt!

@mudkip9531

7 жыл бұрын

What is seen cannot be unseen...

@muhammadsufian117

7 жыл бұрын

electricity is amportant

@KennethNicholson1972

7 жыл бұрын

Ohmy God!

@mmk7432

6 жыл бұрын

NERD JOKES!!

@samzwygart9097

5 жыл бұрын

Those jokes make me Hertz!

Always so well explained. Thank you!

Well done. Thank you for your concise explanations.

This video explained well than my electrical subject professor whom I paid a lot. life sucks

3:52 *crowd cheers* 3:57 *crowd boos*

Love the way you explain things. Very useful

Every electronics beginner should watch your videos ... !! Thank you Sir !! Waiting for the next video ....

08:30 - 2.74W dissipated from a 0.25W resistor. Magic smoke released. Very hot electronics porn!

@lvb1b463

7 жыл бұрын

Porn?

@JoshWeaverRC

6 жыл бұрын

LVB1B. You rather someone shit on your chest?

That's revolting! you never know watt to expect! Don't resist the temptation to laugh every now and then, that's the most current joke I know. Great video. Thanks for sharing with us dummies.....

@SreenikethanI

5 жыл бұрын

I am really amped up when I hear/see puns

@username0004

5 жыл бұрын

@@sushmaverma3562 no u

@sushmaverma3562

5 жыл бұрын

@@username0004 oh fuck

@chrisdaniels3929

4 жыл бұрын

Ohm y

Great video, all are great in fact. I'm just starting out with electronics and your videos explain things by well. Thanks. Subscribed.

Thanks really helped, Trying to invent something and this really helped! I'll be sure to watch all your other videos too!

One of the most important things about LEDs are that they are low power. You put the LED in series with a 300Ω resistor. This meant that the LED was getting only 33% of the power and 66% was wasted in the resistor. With the 140V you toasted the resistor with 2.74 W as it got 98% of the 2.8 W of power leaving the battery - only 2% was used in the LED. How do you actually use LEDs without wasting power into resistors? Even LED strips you buy on Amazon have resistors. How do we use energy-saving LEDs without wasting energy in resistors?

@Afrotechmods

7 жыл бұрын

Constant current buck converters

@idjles

7 жыл бұрын

Which means I shouldn't be using LED strips if I want more than 30% of the energy to go into the LEDS. I don't see how I can connect a constant current buck converter to 16 feet of www.amazon.com/LEDwholesalers-Flexible-300xSMD3528-Adhesive-2026WH/dp/B002Q8V8DM

@mediaguardian

7 жыл бұрын

Why limit that question to resistors? Many discrete components have limits on how much current they can handle. So one simply uses the appropriate resistor. An LED is no different.

@ethanmye-rs

7 жыл бұрын

Basically, you have a chain of LEDs in series and a small sense resistor at the end, (0.1ohm or so). You know elements in series must have the same current going through them, as part of KCL. You also know that in a resistor, current is directly related to voltage, and more importantly, linearly. What you do is measure the corresponding voltage across a resistor to read the current through the LEDs, then use that as feedback in your buck/boost driver. It's more complicated that that, but that's the gist of it.

@superdau

7 жыл бұрын

+Idjles Erle With LED strips you don't waste 66% in the resistor. Have you ever tried measuring the voltage drop in those resistors? It's typically 2 out of the 12V you run the strip at, so 16% loss in the resistor, which is actually a better efficiency than many of the cheap constant current drivers (for low currents). You can't use a constant current driver for a strip. Such a driver can only drive a single series connection of LEDs, parallel connected ones (exceptions if you know what you're doing), which for a long strip would mean dangerously high voltages.

V ---------- I x R Cover the quantity that you want to calculate with your finger, and you see the expression you need.

@silasfatchett5693

6 жыл бұрын

Or you would, if the editor hadn't removed the spaces before the 'V'.

I have just found this video. Thanks. I will watch it again when I get ohm.

Great job sir! Awesome work.. I think you should do all the videos on KZread period. Well done! I was just fooling around and wasting time watching videos and I was very happy. Do more vid's..

Even my leds blowing up are less exciting than yours.

3:49 current abuse 😢

finally a video about LED's that I can understand. thanks bro

im 70 and I start doing Arduino following you videos

Poor Raspberry Pi...

@queenjoy7217

5 жыл бұрын

I thought the same

I need a resistor for my head it's getting fryed

@jenycek2222

3 жыл бұрын

i calculated it for myself and it was 69,42 petaohms

This video is a gems and is really well explained about the eletricity current. Thank you so much!

What great videos....makes the most confusing topics, easy to understand. Thanks.

Uhhh that raspberry was a expensive test....

@colepeterson5392

7 жыл бұрын

not really

@thehastyminer5467

5 жыл бұрын

That's the entire point of the PI, to learn, and breaking it is a form of learning.

Did anyone else almost jump at 5:47 - 5:55?

@yourviralvideo2169

6 жыл бұрын

no

Very polished and informative video. Subscribed

Just found this channel. You must be a teacher because the clarity of your presentation is streets ahead of most people's. Unfortunately, I came upon this after two years of trial and error getting my grandchildren's train set and trains illuminated; at least I have ended up with roughly the same resistor values as the maths suggest. Next time, I'm armed with the correct information to bypass the trial and error. Many thanks.

in Germany we use U instead of V

@3rdpartyU5er

7 жыл бұрын

Same in Finland.

@appelnonsurtaxe

7 жыл бұрын

Same in France

@mohanadal-janabi9364

6 жыл бұрын

uoltage

@raymondj8768

6 жыл бұрын

you guys just trying to be different hahahaha

@akshays8655

6 жыл бұрын

???..a doubt from India

What if i put 100 leds in parallel do i need a resistor?

@tommyallehamn9543

7 жыл бұрын

NE555 yes of course u need!

@qaz010wsx

7 жыл бұрын

you are connecting them in parallel to a voltage source so it is the same thing as connecting one. If you connect them to a current source then also its not a good idea as leds don't do current sharing very well. One will take a lot of current first and blow up, then next will do the same and soon you will have 100 burnt leds on your hand.

@tommyallehamn9543

7 жыл бұрын

+Qaz Wsx it depends on if u wanna use just one single resistor for the whole LEDs or a single resistor foe every LEDs. I think his question was if he would use just one single resistor!

@renzevenir4853

7 жыл бұрын

You need a Power MOSFET first to control big loads with microcontroller

@superdau

7 жыл бұрын

No, you don't need one, you need one hundred. Unless the LEDs are matched (i. e. have the exact same electrical properties, which is improbable unless you measured them all) and thermally coupled (all stay at the same temperature by mounting them on the same heatsink for example), you must never connect LEDs in parallel without a resistor for each parallel string.

Great content for the beginners! ✌️

i see around 15+ video but i didn’t understand. this video clear all misconception.specialy mathematical part is very helpful. thanks a lot.❤❤

Resistor calculator? C'mon, son. Learn the mnemonic like the rest of us did back in the day. ;)

@Afrotechmods

7 жыл бұрын

i r 2 stewpid 4 dat

@trashunlimited

7 жыл бұрын

electrodroid ftw xd

@peshozmiata

7 жыл бұрын

"I had to suffer and you should too!" :D

@Nerdthagoras

7 жыл бұрын

Hey, we can use those resistor things to make a machine to remember for us ;)

@michaelshultz2540

6 жыл бұрын

Bad Boys rape our young girls but Violet gives willingly. Get some now.

Everyone knows about resistance. It’s futile.

Great explanations. Thank you taking the time to make these tutorials 👍😊

@Afrotechmods

4 жыл бұрын

My pleasure!

You are the best! You earn Millions of subscribers!

Children in africa could have ate that Raspberry Pi.

@ArsyadKamili

7 жыл бұрын

Raspi in Africa could've eaten that children.

@Afrotechmods

7 жыл бұрын

Toto ate my raspberries.

@ArsyadKamili

7 жыл бұрын

+Afrotechmods It seems like Mr. Afro is in a good joking mood today XD

Wonderful illustration

Wow...this video is very creative with live electrical components!!!😃

Thank God I found this channel.

Great vid! I've watched a couple of yours now and have subscribed and will be watching more! Very well set out and quite easy to understand..... So far! Ha Ha!I'm just starting out in hobby electronics and finding it very interesting!Thanks for taking the time to explain.

Dude you literally just saved me my IGCSEs are in a day and this came out today

@rudolphguarnacci197

4 жыл бұрын

Hope you passed

Oh man you're back!!!! NICE!!!!

This video helped me a lot, thanks!

Cool explanation. I love your explanation

Very well put together video. Cheers

First time in ur channel and love it already...

Thanks for the basic tutorials

Your description is awesome

well explained,especially for beginners like me.thank you.

Thanks for your excellent explanation

Lovely way of explaining... Thanks

hey ! just found this awesome video , was finding a video that could thoroughly explain electronics to me, and i think i would stick to this channel !

@XanthiumIndustries

2 жыл бұрын

we have a youtube channel that deals with Arduino,ATmega328P,Java,Serial programming ,robotics. So if you like these stuff do Subscribe. Sorry for annoying

Very nice... I wish if I could have u in my Electronics Engineering time and in my Electronics Lab. Now I am an eng but still I watch ur videos.Your lectures are awesome.

Awesome video. Extremely interesting.

thanks so much for this!!! You helped me with my science assessment!!

@nakkalekanchha4752

4 жыл бұрын

Me to

WOW!!! PLAIN and SIMPLE. good video!!! #TheBest!!!

Excellent video! million thanks!

Thanks from Jordan 🇯🇴 ❤️❤️

Great explanation

keep doing a videos. its very useful for basic learners..

Very informative....how I wish you were my prof in Electronics before.

What a nice explanation too good, You have a great knowledge in yours field , please keep it up 👍👍👍👍👏👏💐👏💐💐

I love elektrotechniek and elektronica. good video! resistor is warmth, fasecutting...