How To Make Cooling Fan Speed Control Circuit - Homemade Project

In this video, I'm going to show you making a speed control circuit. Using this circuit you can control any 12v circuit easily. To make this circuit you might need some electronics component.
I bought all of my electronics component from lcsc.com
All Electronics Component Is Available Here - bit.ly/2MScr2I
Component List :
1. Transistor - BD 139 - bit.ly/2WSTEIn
2. Resistor - 22 k ohm - bit.ly/2Ln2LMa
3. Cooling Fan
4. Power Source - DC 12v
5. Volume - B 100k
#speedcontrol
#fancontrol
#electronics

[@diegoknyte]

Thanks for the vid. I found better results (wider range of adjustment) by replacing the 22K resistor with a 5K and the Pot with a 50K. This provided a range of ran voltage from 3V (low speed) to 11V (High speed) I let this run on high for about an hour, the BD139 got warm but not too bad although there's a couple of options. 1. A small heat sink with s drop of thermal paste to the transistor. 2. Set it up where the BD139 is in air flow. 3. Both Heat sink AND in air flow. Additionally, reverse the outer pins on the potentiometer/volume. The turning seems backwards so reversing these pins will make it left=slower and right=faster.

[@CreativeWorldPro]

you are right. thanks a lot

[@MrSookonn]

This works only for low current fans, if you have a 0.5A and more amps fan you must add a radiator to the transistor. Also no more than 12v fans low current will work without overheating the transistor.

[@raymondmgeta3468]

sir can you show me the pictures

[@MDHabib-xv4vc]

Very very Nice Thanks your.

[@CreativeWorldPro]

thanks a lot

[@carloscamacho6133]

What is model at LCSC for your volume rotary switch?

[@electroboy3607]

Good job..have any smooth controll

[@RahulElectronicspoint]

Nice video

[@RealElectronics]

Good

[@tomgirl366]

How can I make this to connect to power supply molex or sata port

[@Cobble_GodMinecraft]

I have two 12v dc fans can i use them both in one curcuit will it get hot

[@rachmanhardian6858]

can i change that npn with pnp?what will change?

[@isulaperera]

Nice

[@CreativeWorldPro]

Thanks

[@wesleyoliveira126]

Like!!!

[@jeffreytobin4424]

Super cool project. My first ever, so thank you. Two issues: 1) .145 amp fan as well as another fan, a .7 amp fan, don't get anywhere near top speed. Maybe I need a lower resistor? 2) Also the pot starts at high speed and slows down as I turn it clockwise (turn it "up"). Your thoughts? Thank you again.

[@jeffreytobin4424]

BTW I'm only able to get 8 v to the fan.

[@CreativeWorldPro]

you can change resistor

[@eleazar3188]

Wonderful! you are very Smart! Thanks you so much for this knowledge!!!

[@CreativeWorldPro]

Glad it was helpful!

[@GRILLORELE]

YOU JUST ADJUST THE VOLTAGE OF THE FAN, SO, WHAT WILL YOU DO IF YOU HAVE A SERVER FAN WITH 4 CABLES? YOU CAN CONTROL BY PWM

[@LuisVasquez-nu4hu]

Is this scalable to multiple fans? Or would I need to adjust the voltage values of the components?

[@CreativeWorldPro]

your fan is control by electronics parts

[@lordion33]

@@CreativeWorldPro please do video showing multiple fans

[@retroguardian4802]

Thanks for the video! What is the Transistor - BD 139 doing in this circuit?

[@CreativeWorldPro]

please check description

[@Abauto84]

love the music

[@CreativeWorldPro]

thanks

[@jerichotm2122]

Hello! Thanks! Works like a charm👍 But... I want to ask you, though... it is possible to change the values of the resistor and that of the volume? Because it seams like the fan speed is still too slow when I turn it on maximum...

[@CreativeWorldPro]

Yes, you can

[@jerichotm2122]

@@CreativeWorldPro thank you

[@MrSookonn]

Replace the 22k with 1k, the 100k to 10k, the author of this "project" has zero knowledge about electronics, no radiator for transistor, pointless. All values of this control unit components are absolutely the result of no actual knowledge.

[@jamescole3152]

@@MrSookonn And yet we are watching his video and not yours. His seems to work.

[@raymondmgeta3468]

@@MrSookonn can i have your WhatsApp number please.

[@neelranade6322]

Can i use 9v battery? Where to connect led pins if I use

[@CreativeWorldPro]

positive cable to volume and negative cable to emitter of BD 139

[@angelbasgall9399]

could I use a bc 548?? it´s for a 30mm fan 0.1A 5V

[@CreativeWorldPro]

no

[@Vorpal_FLY]

Hey bro it's working thank you.. but that BD139 transistor is getting hot af.. is it normal or what should I do.. btw I'm using two fans

[@eleazar3188]

I think 1 FAN for each circuit

[@carloscamacho6133]

Add a heat sink to the transistor

[@joppeprins8179]

if you want to hook up more fans do i havto use more of those switches or can i just hook up more fans i am sorry if this is a dump question but i dont know

[@danieleth1574]

It all depends on your power supply, and yes you only need to do this circuit once. ;)

[@oscarcortesrodriguez4445]

Sorry, from where is taking the power? Thanks for the video

[@CreativeWorldPro]

we use, DC 12v

[@oscarcortesrodriguez4445]

Creative World thanks buddy 👍

[@shahbazshaikh007]

can i use same components for 12v 1.5a fan

[@CreativeWorldPro]

sure

[@123decoeli]

Can this circuit be used for a 48v DC computer (server) fan?

[@CreativeWorldPro]

no

[@theofaniskouniakis8002]

Is possible to use an BT151 transistor???

[@CreativeWorldPro]

you can try

[@Ottonic6]

don't really understand, so bear with me... Why the transistor and resistor. I thought the pot was the resistor? If I can put a resistor in line to run it slower, why not put a variable resistor (pot) in its place to control speed. It's only 12v and maybe .05 amp fan... Just curious.. thanks!

[@CreativeWorldPro]

you also can use variable resistor

[@des2610]

Because the pot is only low wattage and may burnt out over time. Better to use the pot to control the very small current for the base of the transistor which in turn controls the much higher fan current through the collect, emitter junction of the transistor.

[@mountris7can]

Can we also add a 2-pin switch in the circuit and what would it's position be?

[@CreativeWorldPro]

sure, you can

[@mountris7can]

Thank you my friend.I hope I will find the way to place it when the electronic components come.

[@Miriam-ob8tz]

Hi. I wonder if you can help me. I can't get the set up in the video to provide more than 6 volts max to the fan. What am I doing wrong?

[@CreativeWorldPro]

no wrong

[@Miriam-ob8tz]

@@CreativeWorldPro what do I need to get a voltage range of 0-12v?

[@wanenembira]

Well I wish you could make a video of a 220v circuit

[@CreativeWorldPro]

sure

[@sunny-gi3fj]

Can we use any other transistor except bd139

[@CreativeWorldPro]

you also can use BD - 129, 131, 133, 135, 137

[@richardumbayan5340]

Sa koryenti bayan naka sak sak boss?

[@raymondmgeta3468]

help me on how to control a speed of 12 dc fan with 3.3 ampere

[@CreativeWorldPro]

need to use, high amp transformer

[@walteraustinr102]

Can I use a TIP102 NPN (100V 8A) replacing the BD139 NPN you show in this video, to vary the speed of a 12V 3.7A fan? I’m concerned with the lower transistor amp rating in the circuit you demonstrated.

[@CreativeWorldPro]

for that, you need to change connection

[@jeffbaker655]

The fan is turning the wrong way.

[@eleazar3188]

Can it work with my 12V 5A FAN? thanks..

[@CreativeWorldPro]

Yes it will

[@kennycharneca1]

can I use this setup to power a radiator car fan ??

[@CreativeWorldPro]

how many volt ?

[@kennycharneca1]

@@CreativeWorldPro uses 12 volts not sure how many amps but I power it with the car battery but it goes really fast so I want to be able to slow it down.

[@mohdhilman2055]

If I use two 12v fan can I use your current circuit?

[@CreativeWorldPro]

sure,

[@LostFelidae]

I badly need that third hand for most of my projects....

[@carloscamacho6133]

I'm willing to give you a hand. lol ;)

[@hoshirou_sub64p]

If powersource from powersupply PC, can I apply this?

[@CreativeWorldPro]

Powersupply PC = ?

[@edditspaghettit9515]

Yea use a 12v rail from it

[@CreativeWorldPro]

you are right

[@mcjomarcreer1782]

Can this circuit be used to a DC 12V 0.20A and DC 12V 0.18A? Also,can it be connected to a powerbank?

[@CreativeWorldPro]

sure

[@geussepp]

Hello sir I have DC 12v 3.24A can this circuit you made also can it be connected to power bank??

[@ameersuhail4869]

nyc does it work in 5amp 12v.....?

[@CreativeWorldPro]

yes

[@geussepp]

Sir I have a question if you don't mind.. I have 12 volts 3.4A I want to use a power bank for supply.. is it compatible?? If yes.. can I used this circuit you made?

[@afifzainurin]

Can I use the same components for a 5V cooling fan?

[@CreativeWorldPro]

for 5v dc cooling fan you can use 7805 voltage regulating IC

[@afifzainurin]

@@CreativeWorldPro to replace BD139?

[@CreativeWorldPro]

no

[@afifzainurin]

@@CreativeWorldPro thanks for the tips. So should I connect the 7805 voltage regulating IC before or after the BD139? Any chance that you could share the circuit layout which includes the 7805 voltage regulating IC?

[@amolpalekar8063]

Is it compulsory to have a resistor

[@CreativeWorldPro]

yes

[@madhawadhamsika5421]

Is that maximum output voltage 12 Or less than that?

[@CreativeWorldPro]

maximum DC 12v

[@ricocarlosrodriguez2281]

Is your circuit ok to use in a 13.8v power supply?

[@CreativeWorldPro]

yes, it's ok

[@jkkdd4927]

Can you use 2 fans?

[@CreativeWorldPro]

i don't try

[@jernznillas3090]

Can I apply this method on car radiator fan?

[@CreativeWorldPro]

sure

[@amardeepsingh5675]

What if the fan has 3 wires.?

[@CreativeWorldPro]

then we should use dual switching connection

[@waitingfordeath8326]

Can i know the max RPM achieved and the approx CFM values..thanksin advance

[@expression3639]

That entirely depends on the fan you use.

[@lyn9dragon]

what parts i need if my fan is 220 volts?

[@henrikcarlsen1881]

Probably a AC voltage controller would work, depends on the fans (lookup thyristor)

[@chaitanyakadam8194]

Buy fan regulator for hardware store

[@basheerktl8449]

LED use kar sakte h?

[@CreativeWorldPro]

sure, you can use

[@basheerktl8449]

@@CreativeWorldPro thanks bro...

[@iwansutedja]

If I want to use 5v fan (powered by USB port), what component should I use?

[@CreativeWorldPro]

this fan can't work with DC 5 volt

[@afifzainurin]

@@CreativeWorldPro hi he probably meant the fan to have 5V dc instead of 12V. Can use the same components?

[@CreativeWorldPro]

if you want to use DC-5v fan, then he can't use same component. but if he want to use same component, then you should use DC-5v for input voltage

[@mohdhilman2055]

How many hours does this fan can be power on?

[@CreativeWorldPro]

it depends on temperature,

[@lubomir_turak]

@@CreativeWorldPro Do you mean temperature of the transistor or the fan?

[@backwoodsjunkie08]

Forgive me if I'm blunt but are you indi/Pakistani? You guys are amazing at salvaging electronic parts and making kick ass stuff with them! Ive been saving old fans/ circuit boards and broken old electronics and have made nice stuff with them. Like a small shed heater, they cost over $30 bucks for a shitty 5v dc heater but you can make one from scavenging broken parts from the trash! You'd be amazed at what Americans just throw away when it stops working...tvs, fans, heaters, even $300 push mowers and weed eaters! Thies videos really help me understand electronics better, much appreciated partner🤠👍

[@CreativeWorldPro]

thanks a lot

[@mdabusayed9597]

বুঝলাম ভাই,অামি এই কুলিং ফেনকে কিভাবে আরো গতি বাড়ানো যায় (টেবিল ফেন এর মতো)এরকম ভিডিও চাচ্ছি...

[@CreativeWorldPro]

i will try

[@sunny-gi3fj]

Bhaiya yeh on off horaha hai fan chal nai raha continue

[@microstar1016]

Sir একটি LG TV TDA12156 IC, এর System IC তে 7805 দিয়ে 5V দুটি পিনে যায় এবং যে কোন Supply ১টি খোলা রfকিলে হরিজন্টাল দাগ এসে বন্দ হয়ে যায়। দুটি পিনে Supply থাকিলে 5V ড্রপ হয়ে 4.5V হয় এবং 7805 এর ইনপুটও 4.5V হয়ে যায় এবং নরাচরা করে, হরিজন্টাল দাগও আসে না। এটা কি System IC সমস্যা।

[@CreativeWorldPro]

hota para

[@shakilalam521]

Hi... Dada kemon achen? Asha kori valo achen ꫰ dada amar crt tv sensor led jole but rimot diye on hoy na. Kintu rimot valo ache . 20-30 minute por rimot diye on hoy . kon sectioner problem please bolben ki ?

[@CreativeWorldPro]

sensor ar 5 volt check koren

[@waqarshah5751]

When i start a fan tranistor get hot and dont controll the speed ...why

[@CreativeWorldPro]

what transistor using ?

[@jijialex5602]

My fan is just making noise only it is not rotating

[@ashleyvail4888]

I built this, but my fan won’t go full speed now. Any advice?

[@CreativeWorldPro]

how many volt, do you use ?

[@ashleyvail4888]

@@CreativeWorldPro 12v 3amp I believe

[@michaelmagbanua1111]

Hi Bro can i ask you how many watts is your Resistor ?

[@CreativeWorldPro]

.5 watt

[@MDHabib-xv4vc]

12 ভোল্ট ব্যাটারি চার্জ দিলে বাতি নিভে যাবে এবং ব্যাটারি চার্জ হবে। ও AC লাইন ডিসকানেক্ট করলে বাতি জলবে। এ রকম ভিডিও দেন

[@CreativeWorldPro]

ok, dabo

[@MDHabib-xv4vc]

@@CreativeWorldPro Thanks

[@MDHabib-xv4vc]

LCSC এখান থেকে কিভাবে পন্য কিনবো।

[@CreativeWorldPro]

online a order dia payment korta hoba,, taholai hoba

[@MDHabib-xv4vc]

অাউটপুট টেনডেষ্টার নষ্ট থাকলে। ২.২ omh ওখানে ১১০ ভোল্ট থাকবে নাকি।

[@CreativeWorldPro]

thakba

[@nitinpatel5447]

Kya hmm ise controller se 2 fan ke speed ko control kar skte Hai......Hmm....Dono fan ko 24volt se chalayenge

[@CreativeWorldPro]

sure, you can use

[@nitinpatel5447]

@@CreativeWorldPro thnks

[@kurukizen78]

how many hours can it last in max speed? does it not overheat?

[@kurukizen78]

i dont want your heart react i want your comment

[@serpsshitpostemporium5693]

@@kurukizen78 This man is a menace to society

[@diablodizzy.]

can it increase voltage of my fan so it will spin faster?

[@CreativeWorldPro]

you should no increase voltage, because high voltage may damage the motor.

[@diablodizzy.]

@@CreativeWorldPro So it can increase voltage, yes?

[@CreativeWorldPro]

no

[@waqassaleem8183]

Not working

[@CreativeWorldPro]

please check connection

[@SR-nv5nz]

Its fake

[@CreativeWorldPro]

not at all,,,

[@onrylmz]

I want to control 12v 0,54a fan. Can I use this circuit?

[@CreativeWorldPro]

sure, i can

[@microstar1016]

Sir একটি LG TV TDA12156 IC, এর System IC তে 7805 দিয়ে 5V দুটি পিনে যায় এবং যে কোন Supply ১টি খোলা রfকিলে হরিজন্টাল দাগ এসে বন্দ হয়ে যায়। দুটি পিনে Supply থাকিলে 5V ড্রপ হয়ে 4.5V হয় এবং 7805 এর ইনপুটও 4.5V হয়ে যায় এবং নরাচরা করে, হরিজন্টাল দাগও আসে না। এটা কি Supply IC সমস্যা।

[@CreativeWorldPro]

IC problem hota para