I never thought about the brake ... in the "H-bridge"..... You rock!

Your videos are simply the best on KZread. I never understood back EMF until visually seeing it in your video. I also love how you connect theory to real world examples. Seamlessly moving from the motor, to controlling it with a microcontroller, to combining transistors to an H-Bridge to add more functionality. My thanks to you. You have helped me so much.

@uncharted4076

7 жыл бұрын

Why did you stop accepting Patrons?

@AddOhms

7 жыл бұрын

+Uncharted After 2 years, only 3 people contributed. I didn't feel it was right to keep charging them.

Excellent !!! Love the animated graphics. Makes things so easy to see !!!!

amazing videos, thank you all who spent time for doing this work well! they are very useful and interesting!

This was an excellent video. Thank you.

This video is even better than the one about BJTs! Subscribed! Hope to see some new videos from you soon!

Outstanding channel! I love the graphics and clear explanations. Looking forward to your brushless motor video, hope you include a bit on how the ESC's drive motors and how FETs on ESC's work, particularly the voltage/current paths. Battery to ESC- power source input. Battery current to FET input, controlled by ESC MCU and gate drivers, then to ESC motor output, or maybe that deserve a video to itself.

Go on with these videos! They are cool and really well made!

thank you for making this...keep up the good work!

Fantastic job!

nice video by the way as always 👍

Awesome video!! 👍🏼

Nice video, keep it up!

Great explanation and amazing animations! I'd like to see a video about making the animations :)

Thanks for sharing!!

can you do a video about Op-amp and nodal voltage method?

thank you. good job.

nice vid!

I recently found you channel and became a follower, I really do liked your video, you have an awesome way of explaining things, but to be honest there are a ton of these type videos on KZread that control motors via H bridge controller. What do you think about taking different approach and diving in a little deeper and developing a proportional controller that includes armature and load inertia and explore the effect that it has on the stability of the system and how to tune for a critically damped response. I think it would be fun and very useful and a step above "basic hobbyist" content that is so pervasive on KZread. It is just a thought, thanks for your efforts and keep up the great work.

Excellent

Off topic, but _love_ the t shirt!

thank you

thanks you addohm.

Fantastic man.thanks for you ^_^

Teacher you have the electrical scheme of the tester for serial signal of the split inverter

Trully hyped about the brushless, waiting

@AddOhms

7 жыл бұрын

+Matheus Medeiros Awesome! So. Um. Anything in particular you want to know? I'm asking for a friend... ;)

@matdeaf

7 жыл бұрын

i'm an eng. student, trying to build a controller With a microcontroler

Hey hocam . First of all i would like to thank to you . I have some trouble about deciding a type of motor and how should i control it ? Do you have any video or documents for that ? Thankss

thank you sir

thank you~!

Would love to hear about how to control BLDC motors and AC motors

2:59 That looks very similar to one of the drawings that I made for one of my want-to-do projects. Never actually built it, but I made several drawings to try to get similar functionality.

@AddOhms

7 жыл бұрын

I haven't built one with discrete components since I was in school. The H-Bridge was when I finally started to "understand" transistors.

how can i make h bridge with transistors to draw high current in the motor and speed control(from mosfet)?

Perfect! :)

waiting AddOhms #21 series:)

@neilbalch

7 жыл бұрын

YES!!!! I want to see the episode about Brushless DC motors. This channel is amazing!

@michaelirwin4619

6 жыл бұрын

volik2103

Really like the series, nice and simple. For the brushless motors would you mind explaining a hard drive motor and how to drive them from a raspberry or arduino? (3 coils, 1 common) Anyway thanks!

@AddOhms

7 жыл бұрын

I'd have to look into detail, but I believe hard drives use a brushless motor for their main drive. (And steppers for the voice coils.) I'll be talking about brushless next. Funny enough, I have a hard drive about to die, that I planned to take apart anyway.

Might be worth mentioning a capacitor across the motor to reduce the noise...

You have suggested part numbers for a few components, but not for the fly back diode. I guess I've been lucky so far with my fooling about because I've not used one, or maybe the tiny motors I've used with no load have meant they have nothing to provide momentum that could generate electricity once the power is cut. But all that aside, what to use for that fly back diode would be good to know.

@AddOhms

7 жыл бұрын

The common diode is the 1n400x series. Basically something with a reverse rated voltage 2-3 times your motor's driving voltage.

@BernhardHofmann

7 жыл бұрын

Not only a fish, but _teaching_ me to fish! Thank you SO much.

Hey, thank you for making these videos! For the Brushless, could you do a brief comparison between both the Brushed DC motors, and Synchronous AC motors? How to control them and such (speed directly proportional to the applied voltage on a DC motor/frequency on an AC sync one. How, despite brushless being the later, can be controlled as the former?) Also, an explanation on regenerative braking? Again, thank you :D

@AddOhms

7 жыл бұрын

Regenerative braking is a cool idea. Maybe I'll come back to that after motors are done or cover it in a Q&A. I'm working on the script for brushless now. I plan to cover control, but not sure where it is going yet. I would like to compare to an AC motor. (I get motor questions on my AC vs DC video.)

@monrax

7 жыл бұрын

Cool! Thank you

the way you animate and explain makes things easy to understand. i'm kind curious, what software do you use to make it ?

@AddOhms

7 жыл бұрын

+Applied Electronics Mostly Adobe After Effects with some scripts I wrote and, this time, a plugin for the 3D motor models.

@HassanETECH

7 жыл бұрын

this is pretty awesome. and how much time approximately does it take to finish 10 sec footage ?

@AddOhms

7 жыл бұрын

Varies. Total time for each video is on the order of 100 hours. But that includes research, writing the script, animating, shooting, and editing. (Except this one. It took almost twice that.) I estimate animations account for about 25-30% of the total work time. Again, except in this case, the 3D animations involved a lot of learning up front and a ton of time in Blender I hadn't planned on.

@HassanETECH

7 жыл бұрын

that sounds lot of work done. you are really appreciated. I'm willing to learn that too cause i love teaching with animation. could you please list the software that i may need to learn along with adobe after effects. by the way your channel is one of the best. keep it up ;)

I am struggling to choose the right diode for diagram in 2:35. My motor is 1000W 48V 20A. Wiki suggests a 1N4007 for 3A currents but I think mine will be considerably higher... Any tips? Can someone point me in the right direction? Thx!

@AddOhms

5 жыл бұрын

The reverse current is less than the forward current and only surges for a short period of time. Looking at the DATASHEET, the 1n400x series has a peak current rating of 30A.

I have a question. I have a 9-12V DC motor and a 9 volt battery I need to make it go slower so I'm using resistors. Why is my 20 ohm resistor burning when a use the battery?

Excellent, thanks.

Did you make the animations yourself? If so then now I see why these videos take so long to make, damn fine work.

@AddOhms

7 жыл бұрын

+John Grammaticus Yup. I've written scripts to automate some stuff, but still a lot of frame by frame work.

Pls, would you make more electronics videos bcz your explanation and animation are too much easy to understand

@AddOhms

7 жыл бұрын

Thanks. I make them as fast as I can. They take a ton of work, so that's why there aren't more.

@coloradowilderness3139

7 жыл бұрын

I wish your health and to make it explicit your hidden talent .....

What about adding a capacitor across the motor leads to smooth out noise?

@AddOhms

7 жыл бұрын

+John Dukovich They will reduce the noise and help a little with EMF. But will still be noisy since you can't get them close enough to the coils.

Very nice videos! Shouldn't be there 2x PNP @ D3:D5 and 2x NPN @ D2:D3 transistors ???

@AddOhms

4 жыл бұрын

Yes. I drew it wrong. :(

@dina2624

4 жыл бұрын

@@AddOhms The person who doesn't make mistakes is unlikely to make anything. Anyone watching yous vids should appreciate your great work and originality helping people to easy understand the basics and general rules.

muito bom

How did you make the 3D animation for the dc motor?

@AddOhms

7 жыл бұрын

Element 3D for After Effects

@hossammoghrabi1021

7 жыл бұрын

is it enough to make such animation? i mean element3d with camera movement...? do you use other software in this video? how much time did it take you to finish it completely? thanks

Can I make a linear actuator with a brushed dc motor?

@AddOhms

5 жыл бұрын

Sure why not? You probably want some limit switches to make sure it doesn't actuate to far in either direction.

Will be there an episode like " Brushed vs BL"? Brushed has more torq BL has less then it at same current/voltage etc?

@AddOhms

7 жыл бұрын

+Mehmet Kaya Yes. Actually. That was the original script! But I decided to focus on each type individually and then follow up with a summary/comparison. So... stay tuned.

@nickname7152

7 жыл бұрын

Nice, thank you.

Hello, I think this works fine with a brushless motor right ? if not, then why please

@AddOhms

7 жыл бұрын

Brushless motors use electrical commutation. So you need to use a controller and sequence each of the coils. They're basically a simplified stepper motor.

@mohannadsmarthero5277

7 жыл бұрын

ahhh, I completely forget the difference between both of them, thanks

Мне понравилась анимация!

What I don't understand about the H bridge is why the NPN transistors are being used for both high side and low side switching.

@AddOhms

6 жыл бұрын

You wouldn’t. You’d need to use complements. The exception is a MOSFET based h-bridge. You wouldn’t want the additional resistance of a P-channel, so you’d add drivers to run all N-channel.

@stb68

6 жыл бұрын

Thanks, I meant within the H bridge itself, at 2:46

@AddOhms

6 жыл бұрын

That was my way of saying I drew it wrong.

@stb68

6 жыл бұрын

Thanks

I am not able to understand that part switching between the coils and how to make motor move in the opposite direction

1:12 oh now I know how I fried my pi (i did not add that diode)

@Labibliotecacristal

4 жыл бұрын

It is 2:12 really.

Easily You can teach at MIT. Your sheer imagination make me crazy.

@AddOhms

7 жыл бұрын

+colorado wilderness You have just offered the best compliment I have ever received. Thank You.

@coloradowilderness3139

7 жыл бұрын

Actually you deserve it. Many MIT teachers knows theory well but they could not make understand quickly. Suppose at Caltech Good stein's The Mechanical Universe ....what a nice journey

First xD

@AddOhms

7 жыл бұрын

+Keystone Science Damn. I almost had time to finish clicking publish.

@KeystoneScience

7 жыл бұрын

+AddOhms lol :D

but in motors with brushed brushes brushed brushes do brushes wear out? That is, if the charcoal is consumed the engine is to be thrown away? 🙄

@AddOhms

4 жыл бұрын

Or the brushes get replaced.