4000 Watt Universal Motor Speed Control - Make 120v RPM Controller DIY

How to make a 4000 watt Universal motor speed controller at home. This video contains full circuit diagram and step by step procedure for you to better understand & actually make it.
It's a transistor based circuit involving the voltage divider technique for smooth output voltage control and for this very reason it can not only be used for Universal Motors but also your DC Motors, light dimmers and charging your batteries.
You can easily set the output voltage according to the requirement of your battery and then charge it safely. Full demonstration of all that has been provided in the video. Remember that the more the number of transistors in parallel, more will be the power rating of the circuit. . Maximum current handling capability of this circuit is 36 amperes since I've used three transistors with 12 amps each, together making it 36 amps.
The maximum voltage handling capability is 400 volts which makes the circuit really powerful.
Although there is one Glitch. The maximum power dissipation capability of each transistor is 100 watts making it in total 300 Watts and beyond that the circuit will get damaged.
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---- Thanks A Lot For Your Love & Support Guys ---
#universalmotor #universalmotorspeedcontrol #diy #motor #rpmcontroller

[@MrElectron]

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[@colddun66]

В отзывах, почитал и понял - наши Кулибины молодцы!!! Пишут как есть! Моторы будут только лопасти крутить, серьёзную нагрузку не потянут.

[@medievalwebman2917]

How the motor spins faster and faster was very satisfying!

[@chandrahasan3225]

Impeller is also used as blower for blast furnace and it's your as trabro charger for cars and it's your for cooling system for high temperature electrical equipment

[@Coltography]

I love how I'm trying to figure out how to make one of these for a vacuum motor I have, and that's the 2nd motor you're using in the video here lol

[@franciscoluisbocanegrasanc106]

Hola Mr Electron. podrias crear un video con un circuito para motores universales que trabajan a 220v AC por favor. Gacias de antemano. Un abrazo desde Peru.

[@gareng5599]

It's very nice and useful for control speed rotation. Form Magelang - Indonesia I watch this video.

[@dragan3290]

So I can make identical circuit for 240 volts?

[@fenixalorca3143]

Antiguamente el Aprendiz acudía a las Bibliotecas a Investigar, hoy en Día les da pereza (mental) hacer Clic... todo lo quieren por la Ley del menor Esfuerzo. Saludos Mr Electron, muchas Gracias por Compartir la interesante Idea.

[@abdelkaderkatalan5415]

Des schémas électroniques seront très utiles.thanks for your vidéo super

[@icghost2]

Once off, those motors are generating power that's feeding back into your transistors. I would suggest that the proper diode on your output would provide some protection, significantly prolonging reliability and operational lifetime - thanks for the video!

[@quevicular]

I was wondering that to myself.

[@jjhack3r]

That circuit will burn if you use it at half power and actually use the motor. It needs to be pwm switched or else it wastes a ton of power as heat. All you made was a variable resistor... sure it "works" but it is potentially unreliable and wastes lots of power...

[@johnbarry8185]

In reality, it does NOT work on the A/C motors. That's why he kept raising the speed, instead of stopping in between anywhere. That's because it WON'T stop at a lower speed, it will "run away".

[@sergeymolotchkov3091]

Agree, total BS.

[@proudlytamilan1401]

Yes, ...

[@deletabrivette3486]

@@johnbarry8185 got any suggestions for a treadmill control the original is busted and I'm on a budget

[@davidxiu8020]

where do I connect the pwm switch.

[@waltervaldivia2399]

Question: the diagram says that you must connect the capacitor in parallel respecting the polarity at the regulator output, but in the video you connect it by reversing the polarity ... why?

[@mohammad45h]

سلام .بسیارعالی وهزاران 👍...وتشکر....وممنون... شما یک برلیان هستین...👍.....

[@petersack5074]

1:30 you asked: okay, use that center hole where the impeller is, and place about a 6 inch funnel facing it, narrow side into hole. Put all this behind your grinder wheel, and attach the motor wires to the grinder switch. So, when you switch on the grinder, the vac sucks from the funnel end, into vac and into a hose into shop bucket, with cloth over top. I also use microwave oven magnets, on the grinder shroud, to attract filings. Njoy your creations, thankyou too much.

[@carmelpule6954]

As far as I can see that is not a speed controller but a torque controller which is not the same issue. As the output is taken from the collector of the transistors, then the unit is a current source with a high impedance output and not a voltage source with a low impedance output, hence it is a torque controller. If the output was taken from the emitter as in an emitter follower, then the unit would be a voltage source and hence it would be a speed controller where the voltage of the source would be balanced by the back emf of the motors. That is what we mean by speed controllers. The input voltage comes from a low impedance source, hence a voltage source must be balanced by the back emf of the motors being used. The sound suggests it is a current source controlling the torque. If those motors were fed from a voltage source the acceleration would be much faster. One should be careful when using a transistor as a current source and using it as a voltage source.

[@SkInventions]

I am waiting for your new video Nice video bro 😊🤩

[@Ashira.k]

Thanks Mr Electron u have helped me save a lot of money on a project I'm working on 🙂

[@chongshenchang9367]

You can use vaccum cleaner empeller for water pump motor.

[@martinbobak3009]

Just think about it

[@SKElectronic89]

nice clear ful circuit but driver transistors no. ? what

[@MrElectron]

Same 13009

[@SKElectronic89]

@@MrElectron thank you bro❤️❤️❤️👍

[@romanbelov2989]

Ну и накуа он такой нужен, без сохранения мощности на валу!?

[@sddiymakeitworthit7512]

Nice and everything is clearly to understand 👍

[@marcus3d]

What are you talking about? He's not explaining anything (because he actually doesn't at all know what he's talking about), and as others have already told, his circuit is total BS.

[@dericklong6191]

How are you going to post this and not show it step by step ?? I have the parts to do it but I'm just going too have to find another video

[@Abdelrahman-Eltaweel.1st]

الفديو.جميل.جدا.وشكرا.لك.على.إبداعك.مهندس.باادرجه.الاولى. كنت.أتمنى.ترجمه.بالعربيه.لتعم.الإستفاده.برجاء.الترجمه.مع.كل.التحيه.والتقدير.من.مصر.بلادى

[@hackerdeniz4792]

Great video. But please put a piece of white tape on the shaft, so we can see the rotations better.

[@uwefrotscher9039]

My hero, please build a simple "24V / 400A motor controller" such a project would interest me.

[@simonvann7270]

Same for me, I would like to see that, the one in the video I you didn't show the driver part number!! Anyone know which part to use to achieve this?

[@dipteshpatel3447]

I did same. using solar panel drop dc current using dimmer to charge my batteries..

[@Coltography]

Idea for the impeller, make a fume extractor for soldering? that's what I'm trying to do

[@thetruth5366]

This circuit controls voltage value to power universal motors. If you use this for power tools, you will loose torque for sure.

[@fidelcatsro6948]

it should be encased safely in non conducting casing and pot knob also needs to be plastic encased to prevent fatal electric shock in case of failure

[@quevicular]

Nice. Many applications can use to do many things

[@leosaf8409]

Описание 4000вт и последующая дрись на 100вт и 400вольт Не надо так делать, можно и страйк схлопотать

[@colddun66]

Он чо, туфту нам тут гонит??? Я уже собрался по его схеме паять....

[@kamleshgamre2700]

Sir nice idea god bless you , will you please tel me that, is it work on 24 volt 70 amp,. if not, so please show us how to make that cirquit. thank you.

[@gyankaurdung169]

THANKS FOR KNOWLEDGE SIR YOU ARE RIYALI GREAT THANKS AGAIN HARE KRISHNA HARI BOL

[@creativearts4917]

have you made any video about how to repair damaged or low power 12 volt lead acid battery?

[@bobtonechipasha6798]

Am so thankful to you Mr electron you really educate me. Help me to design an esc to run Alternator at high speed at least 4000 rpm. Plz am looking forward to your response...!

[@flojotube]

This is one of your best overall videos brother. Many of them are difficult to understand (why or how) things are happening, but here you made it easy while showing off a very useful tool. Thanks

[@Mwhbmnabjms]

But this will harm ur motor. It is not design for brush motor. It will create alot of amp when the voltage is reduce n burn ur motor. It can be use for brushless motor.

[@petertyrrell6690]

Unfortunately, this video demonstrates how to handle mains voltage in a very unsafe manner. It doesn't appear like you have a lot of electrical experience, and not knowing exactly what you're doing when handling main voltage could literally kill you. This video should be taken down.

[@briangibbon8711]

A great video. Thank you. So much better with little/no background music and you don't say 'guys' so often.

[@renjithgp2542]

On load (washing machine motor) will the whole circuit..rectifier..hold the high current

[@satyajitbhadraroy7723]

If we reduce the speed of an universal motor (lets say washing machine motor) this way, does it reduce the torque of the motor also?

[@TheRealFobican]

Now this is the type of controller I would like to swap out the digital controller in a tesla if not generally in any ev for making the car even better than originally.

[@dkdanis1340]

Are you serious how in the world would this be better than super engineered tesla controller.

[@TheRealFobican]

@@dkdanis1340 it's not requiring anything digital that needs it's own power to power a motor eating into the power consumption which is not ideal for an electric car as it creates a bottleneck in performance and range. Besides it's something entirely else than what everything is transforming into in the present.

[@sujatavijay5162]

Please make a super-fan(EDF) with it...... see how thrust it can create....

[@mahmood3705]

Is the capacitor a must?

[@maurmaurucheakolam]

Thanks bro. I enjoy your teachings and I've learnt soo much from you. Pls will it be possible to use morfets/transistors to build a speed controller. Can you make a video of it?

[@cagataytezsezen]

Controllers cant ve done like this. You need Kore complicated circuits. For Kore efficient and simple ones, look for NE555 SPEED CONTROLL circuits

[@geraldorodrigo2271]

how about radiator motor how to control speed

[@amitchavda1651]

You are brilliant brother

[@clodoaldodasilvaroseno2612]

Merece muitos likes e conquistou um escrito e um fã

[@tavomotors9814]

Hello, good morning friend, I can do the dimer dc to dc and use it for high voltage in dc and low voltage in dc and also in amperage for the transistors greetings from Colombia thanks

[@user-ih1qs2cr3w]

U can make powerfull water pump with that impeller

[@fatima_skitchen]

Superb sharing

[@armandorodriguez4956]

Question: whats valor of 4th transistor?

[@simonvann7270]

Mr Electron, The 4th transistor is not listed in you build list, which one did you use? Great videos 👍

[@simonvann7270]

Anyone know which ⁴th transistor will do this job???

[@expresseducationaltechnolo1478]

this circuit just works in short period of time due transistor thermal overrun.

[@LuxeonIII]

Yes not very efficient , using a transistor in the non saturated mode is transferring a lot of power into heat, yes you have a large heat sink. Using PWM would allow transistors to fully saturate , Mosfets would be even higher efficiency .

[@pascoalfranciscosposito6638]

Olá amigos. Ótimo trabalho com transistor. Ok 👍

[@jayshaw3971]

谢谢你的视频分享👍♥️👈

[@anasgold4153]

We need speed control for 220V AC 2HP MOTOR IF IT IS vailable

[@galjatkin]

Молодец индус, хорошо сделал, лайк и подписка!

[@colddun66]

Под нагрузкой схема тоже работает???

[@hasmukhvpatel4539]

I like this when you make something yourself, that gives you more confidence, can you run a brushless motor with your speed control? this is very good love from Canada.

[@danielfranchette5547]

This type of drive concerns direct current motors. Universal motors are series magnetic excitation motors that can operate in direct or alternating current (motors that have the annoying habit of racing at low loads). Brushless motors are synchronous AC (three-phase) motors, this type of drive is not suitable.

[@Bianchi77]

Creative video, thanks for sharing :)

[@renatosoriano9794]

hello mr electron can i ask your schematic diagram of your contoller bldc controller thank you so much

[@ghsh837]

This is very good circuit, can I use for 220V?

[@MrElectron]

No.. it will heat and burn

[@ghsh837]

Thank you for the reply, can you advise which component I should replace to match 220Volts?

[@elektrobear2027]

@@ghsh837 the MOSFETs I think.

[@elektrobear2027]

And the rectifier

[@srinivastech6653]

What I is the concept involved in it. Whether you're controlling the current or frequency.

[@peterjeremiah510]

I like your videos, more effort to your research, Sir

[@sto2779]

Can you show use how to make one using common Triacs?

[@josuealmeidadasilva8314]

oi amigo boa noite e esse transistor draiver que o amigo usa o 1351 ele NPN ou PNP e e que transistor eu posso esta usando para substituilo esse draiver

[@VictorUsiwo-gn2cx]

How do I get the full complement of the DC/Ac universal controller and what is the number of the Fort transistor that you call the driver transistor

[@solight512]

Very Nice!

[@vuilbaardgames3280]

Could this controller work with 48volts, and run a 8 or 10 kw DC motor? I want to electric drive my boat and bought an old 8.7 kw forklift motor for that but can't find any factory made controller that can handle the wattage

[@vvmauryacreation1920]

sir your tutorial best please make a hindi tutorial

[@user-pd5ht7tg9o]

Show the full circuit without subtitle, where do u getting output from...

[@OOAK-Ireland]

im an absolute novice when it comes to power and electricity. I want to use a regulator in order to control the spindle speed of an old drill motor im suing as a mixing motor... any thoughts? I dont mind just to buy a regulator.

[@linsonkp7261]

Thank you so much bro.....really good.....

[@user-bd6ph3fk7o]

No 4000 Wt.

[@widebeanzz7148]

Thank you for sharing your knowledge

[@democracyforall]

what is the total ohms or killo ohms of variable resister?

[@faus040459]

Hello, what is that type of capacitor called and where can they be found? Is it electrolytic? What if it was positive? On the other hand, is the fourth transistor the same as the other three? The potentiometers that I have reduce the speed but little by little the engine is increasing its revolutions by itself and I want to try the one you explain if this does not happen. I am looking forward to your response. Thanks

[@danielfranchette5547]

Here the transistors operate in variable resistance, they will heat up very quickly and the overall behavior will not be very stable (maybe your problem). This is not the right method for this type of application. A PWM command (see wikipedia) would be much more efficient. The capacitor is of the electrolytic type. Be aware of the danger of voltages greater than 50 V AC, 100 V DC.

[@user-oq9kq9vi4l]

Thank u. I need equivalent transistor 1351 please .

[@faustinotorres1007]

Thanks for your reply. The fourth transistor is the same as the other three. And another question: why regulating the speed of a motor every time it takes more speed on its own, that is, you regulate at one speed but the motor is taking more revolutions, it does not stay at the regulated speed of rotation.

[@kuavivo8061]

Hi mr electron! I really love ur video very helpful ❤️ i have a alternator from a zusuki multicab. How can i run it as a motor direct from 12v battery without using speed controller? 🙏🙏🙏❤️❤️❤️

[@danielfranchette5547]

An alternator is a synchronous machine with alternating current, it is compulsory to have a frequency converter to control this type of machine as a motor. Car alternators have diodes that convert alternating current to direct current to power the car (unless yours is of a very different technology). In addition, they have an auxiliary magnetic excitation circuit that must be supplied in alternator mode but also in engine mode.

[@jeanlabrek8454]

_ Interesting, but the diagram shown is incomplete, the 4 rectifier and two condenser connections are not shown on this diagram ?

[@kapilpathak4834]

Impeller can be used to make balloon inflater

[@douffinguessan1129]

OK merci !.

[@ElVinto]

Half a million people were deceived (I mean the text about 4000 W)...Perhaps it will be a revelation for you, but a 500 kW motor can be spinned up from a household power supply, only it will not generate operating torque, and therefore all energy will go only for the rotation of the rotor; any load will cause an emergency power outage... Try to put a load on the shaft in this circuit, or even more so, stop it; you will see a bluish smoke appear from the depths of the transistors))

[@GregorKropotkin-qu2hp]

You could use the Impellor to build a miniature Jet engine?!

[@ozgurakalin3154]

Merhaba bu devre çamaşır makine motorunu torklu olarak çalıştırabiliryiz

[@abdulmudallibibrahimkhalil3908]

Hello sir, can this circuit control single phase AC motors? Thanks!

[@alchemy1]

Can you use this to run a Treadmill permanent magnet DC motor ( 100VDC, 21 Amps), 3HP?

[@khalidali-ns5hi]

please where is the completed diagram ??? is this circuit for 220 volts AC ???

[@tejasdarekar3250]

apne jo machine use kiya hai aur jo controller banaya usase 1 se 2 ghante motor calaye to over heat nahi hogi na ...agar heat hone ke chance hai to kya kare..reply...

[@keithblume5159]

I have not seen the brushes oiled before

[@omharipatel3071]

home supply means 220 v ac ?

[@dgmenace73]

Do you have a link to DC brushed or brushless diy controller that's not expensive to build. I want to put an electric motor with flex shaft on a kayak, and be able to control speed somehow ....the brushed and brushless controllers I have found that will handle aprx 500-750w motors are very expensive. Thanks

[@jorgealbertopaneblanco6115]

Es un intelectual .Perfecto !!!

[@alltime4715]

เยี่ยมมากครับ

[@alexandrb1754]

Зачем смазывать щетки электродвигателя? Они умрут быстрее.

[@srikanthms1821]

🙏🙏Please reply soon Bro in the circuit diagram two terminal of input voltage is directly connected the variable resistor even I give 12v it get short circuit

[@MrElectron]

Seems like variable resistor is bad

[@caroled_1629]

Bro why don't you make an experimental video on power generation through the universal vacuum cleaner motor

[@MrElectron]

You read my mind 😀. Very soon !!!!

[@leemoviereviews]

dear sir please make a video with dc inveter compressor derek start

[@faustinotorres1007]

Gracias por su respuesta. El cuarto transistor es igual que los otros tres. Y otra pregunta: por qué regulando la velocidad de un motor cada vez coje más velocidad el solo, es decir, tu regulas a una velocidad pero el motor va cogiendo mas revoluciones, no se queda a la velocidad de rotación regulada.

[@gundur7193]

Is the torque strong at slow speed?

[@emredoruk35]

Since we have disabled the tachometer, this engine will not work properly under extreme loads.