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This was better than my entire circuits class!

Great video mate, you speak very clearly so the entire world can understand. Very educative !

0:19 Simplest DC motor 0:24 Stator, armature, commutator rings 0:42 Lorentz Law 1:20 Torque action nearing zero 2:18 Enhancing magnetic flux interaction 2:30 Spring-loaded commutator brushes 2:53 Parallel (shunt) and series motors 3:13 Series-wound motor (output of stator windings powers brushes in series connection) 3:23 Shunt motor (same power source energizes brushes and rotors in parallel connection) 3:35 Back EMF 3:47 Electromagnetic induction 4:06 Back EMF (proportional to rotor speed) opposes internal voltage 4:24 Large DC motors

now all those static images from books and slides make sense

1 hour explanation in 5 min. Really good job

Easy to understand and yet detailed enough visuals, a clear voice and the video length is perfect. Excellent video, thanks!

Thank you. Needed to read up on DC motors and it's a lot harder to understand the construction of these when it's all on paper. The step by step visual presentation made this a lot easier to digest.

Absolutely great video, thanks a lot. A small note for everyone: Something missed in the video, the armature coils don't exert only back EMF, they exert magnetic field opposite to beneficial flux also. Because of this, at the big powered machines; some extra coils which called "commutation coils" and "compensation coils" being used to get rid of the armature flux.

Better than my lecture in my power engineering course. Thank you!

Brilliant video, clear, simple, covers all the basics for further learning, great work!

the bro appreciate it. I've been struggling with this for months

this explanation was amazing...thnx a ton..simple..accurate...time saving

Thank you. I'm a mechanical engineering student, I'm taking electric machinery course this semester and you made it a lot easier for me to understand the construction and starting of dc motors. Although it's a too briefed description.

Basically, The current-carrying conductor produces its own magnetic field which interacts with the external magnetic field of the permanent magnet. This interaction is what moves the wire. If we make the conductor into a squarish U-shaped loop and fit a power source. Then one arm of the conductor will have the current coming towards the power source and the other one going out in the presence of the external magnetic field provided by the permanent magnets. Therefore, one half of the conductor will move upwards and the other half will move downwards and we would assume that the conductor will carry on rotating like this and we would be on our way of having DC motor. Two major problem occurs with this design. One is that the wires will tangle up and another one is that once the coil reaches the vertical position after rotating far enough, it would flip over, so the electric current would be flowing in the opposite direction. Now the forces on each side of the coil would reverse. Instead of rotating continuously in the same direction, it would move back in the direction it had just come. We need to periodically reverse the direction of the current to overcome this problem. So a commutator is used to overcome this problem. In the simplest form, the commutator is a metal ring divided into two separate halves and its job is to reverse the current direction every time the coil makes half a turn. Now since the torque becomes very small when the coil is perpendicular to the magnetic flux, the motion will be very irregular. To overcome this problem, one more loop of coil is added with a separate commutator ring (when the first loop is in the vertical position, the second loop is connected to the power source and therefore a motive force will always be present). To make the rotor motion even smoother, more loops and corresponding commutator rings are added. Next, the magnetic flux interaction is enhanced by fitting the armature loops inside the slots of highly permeable steel layers. And spring loaded commutator brushes help to make contact with the power source. In a practical motor, the permanent magnets are curved in a circular shape so it almost touches the coil of wire that rotates inside it. The closer together the magnet and the coil, the greater the force the motor can produce. DC motors are used for small applications like toys but you won't find them in house-hold appliances. For them, universal motors are used. In universal motors, instead of stator being permanent magnets, electromagnets are used and therefore, can be powered by DC and as well as AC.

Best video I've seen on this topic so far. What I liked the most is that the model evolves, as things are explained, into a real model of an electric motor

Simply superb. I have watched virtually all the videos that you have uploaded and they have helped me enormously. Looking forward to seeing new ones! Thank you so much

Just found this channel... Absolutely brilliant, been looking for this for ever! A combination of mechanical, electrical, civil.... Heaven! Thank you very much!

Thanks for the accurate translation. 정확한 번역 감사합니다.

Very good explanation, thanks. I finally understand the workings of a DC motor.

I watched so many videos on how a dc motor works and didn't understand it but now I do, thanks to you.

Thank you so much Team,Really you’re doing a great job🙏🏻🙏🏻🙏🏻🙏🏻

Best video i have ever seen on you tube about DC motor.. Thanks sir

Graphics well detailed, clear and concise narration, great job 👍🏼

私は日本人のため日本語でコメントを書きますが、私がまだ学生だった1980年代に見た図鑑等の挿絵で見るよりもずっとわかりやすい動画と思いました。 動画の該当する部分で、SERIES MOTOR＝直巻きモーター、SHUNT MOTOR＝分巻きモーターと日本語では訳されているのですが、直巻きモーター及び分巻きモーターの動作及びトルク特性等は私が過去に見た図鑑では紹介されていなかった記事であり、そのような特性等までも音声をなしにして動画を見ているだけでも分かりやすく表現されている点はとても良いです。

My Coord Sci teacher recommended this video to my 8th-grade class, and this video really helped me understand the material! Thanks a million, mate! Edit: We are learning about energy and how motors work. Great video!

absolutely brilliant. Better than any text book could explain!

I seriously don't have words to describe how good your videos are.... thank you very much...

This topic makes so much sense now. You are blessed

That was awesome....very clear explanation..thank you so much

Explained so absolutely. Thank you.

I send your video to my professor as a learning material , so clear and easy to under stand!

a year from teaching myself about this, this video was great for refreshing my memory

Thanks to this video I can get an A in physics, thank you Learn Engineering

thank you for this helpful video tutorial

The animation is quite Satisfying. Great Work!

This was one of the best videos I've seen on the basics of it. Thanks

Can I donate to you so that you produce more awesome videos? I love your channel!

Such a good video \o/ it would be really good if you add lap and wave winding and show them since their working is very confusing

I have a test on AC and DC motors in a week. This helped big time. Thanks!

nice!!! and perfect!!! you are awesome man , thats the first time in 10 years, where i see a good job and explanation

Why didn't our teachers in university teach us this? I have to come online and find this myself...

good work ... keep doing

Most helpful and easy to understand video i've ever come across!

Finally after getting diploma this concept got fully cleared with this video 😊 Thanks

Thanks. I was wondering how electricity translated into movement! Now I know how it works

Awesome video

one million likes for the animation, another one million for the explanations... i'll subscribe now! Thank you!!!!!!!!!!!!

Great video. Easy way to learn about DC motors. The narrator is very clear.

Very useful and thanks for uploading it. Couldn't understand it from my textbook. 1 doubt btw. According to Fleming's left hand rule, the North Pole will apply force towards the south Pole, and the current, the magnetic field, and the motion are perpendicular to each other. So, the North Pole should apply force on the coil which is connected to the split rings. The motion should be opposite I guess.

yup, great! thank you so much for this tutorial video.

You guys are doing a great job, hats off to you guys! Quite helpful lecture.

I’ve seen those science tricks with a coil and battery and how it spins, so this video was very useful for explaining that motors use this technique to spin, Thanks for this video, it was very useful!

THANKXX IT IS EASYYYYY TO UNDERSTAND

awesome video to see to know that things or make that things thanks for us

I have a test tomorrow and this really helped me understand why the commutator rotates. Thanks!

Wonderful explanation of the concept and beautiful done well on this effort

To ensure steady uninterrupted rotation there must always be an even number of coil loops that form the DC motor's armature.

Can beat all other videos.

I have been confused from a month and wondered how the hell it works, now i got it cleared, thanks friend!!!

what a explanation yaar. thanks for great explanation which I understand clearly not like book which only reading purpose and pass exam.

hi there teacher, can I know if there are permanent magnet dc motors with rotating magnets as rotor and stationary coils as stators in the market, I always see designs with rotating coils and stationary magnets but I dont see the opposite kind of dc motor I mentioned earlier above..why is that so?

great

Wonderful video. The explanation is crisp and concise. Thanks a lot!

Thank you very much. You are real guru in the electrical machinary. Your awesome video helped me understand & remember these knowledge easily

How do you do it? Your videos are really easy to understand.

Thank you too much

i LOVE how u explain every step !!

Best electronic channel ever. Also you are very gracious sir.

Brilliant work, With the best of knowledge.. BUT..... Who disliked these videos?? Aren't they humans?.... Probably they are donkeys or other animals.

I think that the circuit diagram for the series connection was wrong..the wire from the right field winding should go to the left without touching the carbon brushes.

Very simple and lucid ! Thank u

Best explanation about commutation I've ever seen.

"we will logically understand how this motor works"...how else???

Hi! Great video, just like all your other ones! I have a question about the armature of the rotor. You say that it has HIGH permeability to ease the magnetic flux interaction. Shouldn´t it be with LOW permeability so it will reduce the eddy current losses when the rotor turns inside the magnetic field of the poles? Hope i was clear with the question. Thanks.

My prof put this video link in our slides. Great explanation of the basics!

after seeing your video I feel like I can teach electrical engineering...amazing explanation

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Hello! Is a generator working just opposite way? Can you make a video about it? Thanks

Loved it! You re gonna become my Key to Success!

I wish i saw this when i was studying electrical machines. Good job on this video :)

It pisses me off that I "had" this type of classes in school but very briefly and didn't learn shit about it. Sometimes, when I finish school, I want to be a teacher, not because I would like it (I hate teaching), but because I want to give an exciting and full class to show people that "boring" stuff can be cool and very useful.

FYI this is how a DCgenerator works ^^ 3:47

Such a good explanation. Thank you!!

Clear and concise! Bravo!

0:28 Engineers were never great at spelling LOL. Learned a lot though, thanks!

Your review is very helpful for me, thank you!

thank you so much for making references like these available for everyone

quick question everyone! why are you watching this video? Are you watching it because you want to persrue a career in engineering?

Chi è qui per il link del Villa mi metta un like (solo per quelli della 5BA)

Most useful channel in youtube "Learn Engineering"

SOOO short and sweet, youre a life saver 😆

Great video. The new doors of learning have opened by you. Thanks a lot.

Awesome explanation. COncept clear in just 5 mins.just wow

Super one stop explaination! No need to go any where be here and learn everything.

I learned how motor works or the function of each part of the motor. My knowledge about motor has expanded and helped facilitate my understanding of it.

It was a really nice video.Thanks for the wonderful explanation.

I hope that the rest videos are as good as this one. So easy to understand... :3

I found this video incredibly clear and easy to understand; I am wondering how lots of people clicked on dislike !

Thanks for the great video! Helped me understand DC motors