Simple DC Motor Speed Controller Circuit

In this video, you will see that we can make a DC motor speed controller with two simple parts.
The circuit of this project is very simple and consists of two parts:
IRFZ44N MOSFET
10 kOhm potentiometer
Important note: To use a 12 volt motor, set the input to 12 volts and to use a 6 volt motor, set the input to 6 volts.
If you have new ideas for future videos, leave them in the comments.
Please don't forget to like and subscribe to support this channel.
Thank you.

[@Skill_DIY]

✅️Note: To prevent damage to the MOSFET from back EMF, connect a flyback diode with the motor. Thank you for your support, I am waiting for your comments and suggestions. ❤

[@arvindpayghan2647]

ईस सर्कीट को push बटन, dpdt switch जोड सकते है क्या? और 775 dc मोटर को Reveres or Forwarded करने के लिये. *Please Replay*

[@arvindpayghan2647]

कोणसा diode जोडू भाई.

[@milja9392]

This is toturial what i find for...simple and easy to understand for me and its work.allready test it..Thank Bro..keep it up to many good idea..

[@Skill_DIY]

Thank you dear friend, I am glad that it helped you 🌺

[@MerlyAcidello34]

Salamat idol may natutunan ako

[@Skill_DIY]

Hi dear friend! I am very glad that it was useful to you. have a nice day. 🌺🙏

[@حمديالعزعزي-ه2ح]

Thank you for this information, it is clearly explained

[@Skill_DIY]

Hello , Welcome to "Skill DIY" Channel ! I'm glad the video was helpful.

[@Ahmedlinventeur]

استمر بنشر ياصديقي 👏👏👏👏👏

[@Skill_DIY]

شكرا لدعمكم 😉🌺

[@ThisIsAllFake]

if the source voltage drops down, e.g. on a 12vot, you have set it to 6volt, when the source becomes 10volt, will the output drop too?

[@Skill_DIY]

When the input voltage is 12 V, the output value varies between 0 and 12 volts. When the input voltage is 10 V, the output value varies between 0 and 10 volts, which can be increased or decreased by turning the potentiometer.

[@Ahmedlinventeur]

أحسنت 👍👍👍👍

[@Skill_DIY]

شكرا لتعليقك يا صديقي العزيز 🌺🌺

[@electro_kid1]

Working tnx alot

[@Skill_DIY]

Thank you dear friend. I'm very glad that it was useful to you. have a nice day 🌺

[@electro_kid1]

@@Skill_DIY it stopped working 😢 nothing is wrong tooo

[@Skill_DIY]

What motor did you use? Did you put a sink for the MOSFET?

[@electro_kid1]

@@Skill_DIY I used a 755

[@Skill_DIY]

This motor draws a lot of current and you need to use a large heatsink and a fan to cool the MOSFET because if the MOSFET gets too hot it will burn. Also, this circuit should not be used for a long time for this motor.

[@Sihotang-79]

Is it can be make faster than standard of rotation?

[@Skill_DIY]

No it isn't

[@Sihotang-79]

@@Skill_DIY Thanks a lot for your nice answer,my bro..

[@felixmandere1239]

What's your power source? Battery or charger/adapter?

[@Skill_DIY]

You can use whichever one you want, just make sure the voltage is 12v.

[@kennmossman8701]

the motor may not start if trhe pot is turned down since gate voltage is low so max current would be low

[@Nazgul1221]

Bro, is heating normal? And 1 heatsink is good?

[@Skill_DIY]

Hi dear friend. Yes, at normal currents, the heating produced by the MOSFET is normal, and a heatsink is good.

[@kennmossman8701]

Motors often have high inrush current so you must derate the MosFet

[@Skill_DIY]

I don't understand what you mean, please explain more 🌺🤏

[@kennmossman8701]

@@Skill_DIY which do you not understand.....you can Google motor inrush or starting current

[@Skill_DIY]

I know the inrush current of the motors but I don't understand your solution.

[@kennmossman8701]

@@Skill_DIY simple. if the nominal current is 1A with an inrush current of 5A then pick a transistor that can handle more than 5A

[@karamathali9956]

3.7 volt bhi lagasakte hi

[@Skill_DIY]

yah sambhav hai, lekin sambhavatah yah theek se kaam nahin karega.

[@adityakr.25]

​@@Skill_DIYBhai ek universal dc controller kaise bana sakte hai , input chahe 3.7 v ho ya phir 6 ya 12v sabhi me Kam kare Aisa kuchh batao bhai

[@berkerustunerciyas1651]

Hello, I set up this circuit but it does not run the fan at 100%. What can I do?

[@Skill_DIY]

Because the MOSFET consumes some of the voltage, in the 100% mode, the output voltage is lower than the input

[@adityakr.25]

Is anything else to get 100% output.

[@abunasal5242]

I want input only 4,2 Volt ...output 3-3,7 volt...can do or not ?

[@Skill_DIY]

Hello, dear friend, welcome to the channel ! Probably, but this circuit is not suitable for this use

[@ZizetaNoOuji]

same, i want to make a hand fan using tamiya dc motor, but this will burn the potentiometer

[@arvindpayghan2647]

ईस सर्कीट को push बटन, dpdt switch जोड सकते है क्या? और 775 dc मोटर को Reveres or Forwarded करने के लिये. *Please Replay*

[@Skill_DIY]

No dear friend

[@arvindpayghan2647]

@@Skill_DIY Irfzn 44n mosfet 10k potentiometer जोडकर push बटन, dpdt switch जोडकर और 775 dc मोटर को Reveres or Forwarded कर के दिखाव Bro. *Please Replay*

[@fasihakhanum4213]

Can the MOSFET be replaced with SCR

[@Skill_DIY]

No, because MOSFET and SCR have many differences.

[@hermandebruin1334]

Does it have high torque on low rpm

[@Skill_DIY]

No

[@mohiuddinshah5558]

Sir y this switch controls reverse please reply

[@Skill_DIY]

No, this controller cannot change the direction of motor rotation.

[@therealsirbassalot]

Would this work on a larger motor

[@Skill_DIY]

If it is much larger than this motor, it will draw too much current, and the MOSFET may burn out.

[@therealsirbassalot]

@@Skill_DIY this would not work on an 18v power supply?

[@Skill_DIY]

It will not work on 18V power supply, and the MOSFET will probably burn out.

[@make_your_own]

To the top , well done 🎉

[@Skill_DIY]

Thanks for your comment ❤️

[@user-iy2ug6xt1p]

Is ok for motor of dc 30v?

[@Skill_DIY]

No, the MOSFET might burn out.

[@kennmossman8701]

is that a LOG or LIN pot

[@Skill_DIY]

I don't think there is much difference in using LIN or LOG potentiometer in this circuit, but it is better to use linear potentiometer.

[@harblasvirdi9096]

Voltage drop 24to 9 when attach 12 v motor

[@Skill_DIY]

How many input volts did you connect to the circuit !?

[@algregdelacruz7691]

Where can we buy the parts?

[@Skill_DIY]

You can buy parts from electronic parts stores or Amazon

[@ningratbatik550]

Agar mosfet tidak panas bagaimana caranya? Saya menggunakan irf44n dan potensio 10k input 12 v motor rs 550.. Tegangan mentok di 9v.. Panas saat motor mulai berjalan di tegangan 3v.. Mohon jawabannya..🙏

[@Skill_DIY]

Gunakan heatsink untuk mencegah MOSFET dari kepanasan. Saya juga merekomendasikan penggunaan Thermal Pad untuk kinerja yang lebih baik. Apakah Anda yakin MOSFET Anda sehat?

[@kennmossman8701]

nothing done in case of back EMF?

[@Skill_DIY]

This circuit is simple and educational, but if you have any suggestion for this topic, please write it.🙏💡

[@kennmossman8701]

@@Skill_DIY With no explanation/discussion/advice/no coversge about issues the educational value is rather dismanl

[@Skill_DIY]

I agree with you and thank you for pointing out this problem. 🌺 You can connect a flyback diode with the motor. and solve the back emf problem.

[@kennmossman8701]

@@Skill_DIY I know so back to my original question

[@Skill_DIY]

I said the solution above... You can connect a flyback diode with the motor. and solve the back emf problem.

[@chillerflfernando4394]

20volt ?

[@Skill_DIY]

I don't recommend

[@calonfishhobby5145]

Input 3v bisa tidak?

[@Skill_DIY]

Untuk motor 3v, inputnya harus 3v. Tapi untuk motor 12v, inputnya harus 12v. Tapi rangkaian ini tidak cocok untuk motor 3V.

[@mdmonirhossain3016]

3.7 ভোল্ট দিয়ে হবে

[@Skill_DIY]

না প্রিয় বন্ধু, এই সার্কিট 6 থেকে 12 ভোল্ট পর্যন্ত কাজ করে

[@charlepakeo-an3409]

Can i be use 100k potenciometer instead 10k?and using transistor

[@Skill_DIY]

By changing the parts of the project, the circuit may not work properly. If you use a 100K potentiometer instead of a 10K it probably won't be a problem, but I don't recommend it.

[@charlepakeo-an3409]

@@Skill_DIY tnx bro I'm going to used this idea..

[@omkargolait46]

पोटेंशन मिटर जलताहै क्यु?

[@Skill_DIY]

आपने कौन सी मोटर का उपयोग किया? आपके सर्किट का इनपुट वोल्टेज क्या है?