Sir, i have three CPU Fans each rating 12v 0.51amp. I designed same circuit that you are shows, bt the problem is fans are not running ..only one fan is running as a slow speed, how i designed the circuit please help me.
Very nice and hard work . But would like to give you a suggestion. That you should use a laptop or any other adopter/charger of 220VAC to 12VDC 5A and connect these fans to it. That will aslo work fine.
its easy to come by small fans from whatever.people throw completely perfect stuff away.i go to the dump and check the battery dump box with my multimeter,heh heh. ive set up small 6 volt batteries in series to run small fans for ventilation/heat. i am no expert,,,i was wondering why you used that blue(capacitor ???) or whatever it was,is that what you use to reduce to 12vt ???? it's cool to take stuff and make it into something useful yourself
At 3:42, you show the wires being fed through the metal plate without any protection from shorting out. Over time, the fan vibrations could cause the wires to rub against the sharp metal and then short out which could possibly cause a fire. The price of a simple grommet is very cheap insurance. Other protections could be heat shrink tubing, electrical tape or at the very least, hot glue.
mere sab hi fan 12v ke phone charger se bohout achhi tarase chalte hai, magar un sub ko individually alag alag charger se run karvana parta hai, to agar souch liya jaye ke mere every single fan 12v ka hai, toh main agar apki advice follow karun to mere paas 12x20=240v ka fan to mujhe 480v ka single transformer or diode and capacitor lagana parega?
Wat the diodes for? Transformer not got the bawls to spin 4 fans? I would just personally get 120v case fans and would be more power efficient cuz with step downs , well look it up.., and would have nothing else besides the fans. Theyre cheap too.. like 12$ for 4 ..
No more dangerous than 120v.. he would have same amperage breaker systems as 120 so depending on the overcurrent protection would be how dangerous it was.. also, they make cheap 120/220 v cpu size fans for like cabines and food stuffs...
Z Ack "he would have same amperage breaker systems as 120".... actually no, he wouldn't, and the reasons why are covered under basic electrical theory. You should probably stop spouting bullshit on the internet if you know nothing about the subject under discussion, especially when the subject is electricity.
4 fans are more powerful, therefore creating more ventilation and suction, thus rearranging the air in the bathroom as well as more power gaining speed!!!
Very good. Using AC cooling fans could eliminate additional circuitries. I think that would be more easier, just assemble the mechanical frame. Also, series connection isn't preferred there as one fan fault can stop the whole and also, any low voltage will drastically decrease all fan's speed. Parallel is preferred in my case.
All you need is to find a plug in power supply (like the black boxes that come with electroics) if you look on that black box it will tell you what its output is. Find one that says 12v and the higher the MA. Milliamp, the better in your condition as car rad fans can take alot.. also on the black box make sure you see a symbolof _____ with a - - - - over top making solid line with dotted o top. That means dc.. then all you do is attach like wires on the fans and cut the end of the cable off coming off the black box (while unplugged) then attach one of those wires to one of the fans abd other wire to the other... put a switch in series with one wire to switch it. If you dothat and doesnt work, flip thr wires around (polarity). You wont hurt anything if you messup.. the power supply might cut offbut youreset by unpluggig and plugging bsk
Forget what Z Ack is saying about using a plug-in power supply, you wont find one with a suitable current rating. Radiator thermo fans can draw anywhere from 5 to 20 amps (60 - 240 watts) and you want to run two of them. You would need a suitably rated 120VAC transformer with a secondary voltage somewhere in the 16-18 volt range. No, you don't want a 12V transformer because thermo fan motors are optimised to run off the 13.8V-14.4V output from the car's alternator, and the rectified DC output from the transformer will equal the RMS voltage of the secondary (not the peak voltage). Then you'd need to add some sort of rectification (a couple of chunky diodes would do) and some reasonably sized reservoir capacitors on the DC output. If you can put all that together correctly, you'll end up with a very noisy way of moving a lot of air, as radiator fans are designed with airflow above all other design characteristics... they are not designed to be quiet. You could also buy a suitably rated 13.8V bench power supply (as used by automotive electricians for testing purposes), but these are expensive. I'm not sure what your specific application is, but in 95% of cases it will be much cheaper and easier (and quieter!) if you just buy a suitably rated 120VAC fan.
you should've placed the transformer outside. Aside from making it hidden while making your room aesthetically clean, it will also keep the x'former from heating up. I guess its size is not much of an obstruction, besides that 4 fans will make it overheat for sometime when on...
There's a big difference between load capacity vs endurance. Even appliances short and overheat even if their parts are made for the load. you expect a gadget to run longer then heat is your worst nightmare... just sayin'
I doubt the transformer won't heatup especially if the room is itself warm. I've in electronics for 15+ years now and not in my experience i've handled a part that wont heat up unless its Japan made. I'm not sure if you are in a 4-season country but for tropical to uberwarm countries, a little precaution may help...
No. The proper answer is to forget making your own deathtrap power supply and just use a simple power supply that is commercially available. While the idea of the fans is neat, the power supply part is by far the most dangerous. Just buy the proper supply and forget the tape, capacitors, and other cobbled electrical dangers.
At 5:29, you fail to show the use of plastic wall anchors. It is not a good idea to directly screw into a wall because over time, the fan vibrations will weaken the strength between the screw threads and wall material. Some inexpensive anchors will help the installation to last a long time.
Seems overkill? Why not use a spare 12V/1A switching power supply (from an old router or switch) and just connect that to the black/red wires from the fans (the yellows are only for motherboard monitoring) and avoid all the dangerous stuff! 1 of these common 'wall wart' power supplies will easily run 4 computer fans and since you are only dealing with 12V then you mitigate the dangerous part. Make sure you solder the connections and use heat shrink electrical wrap to cover the connections. Easy. PS - for a washroom or place with moisture, isn't it easier to buy a $20 extraction fan designed for this purpose?
would have been somewhat helpful to hold up a piece of tissue or something light just to see how strong the air outflow is. We cant tell from the video :o/
I'm pretty sure his house insurance wont cover the fire that will occur being it wasn't tested by or have the UL- " United Laboratories " stamp/sticker to wire them fans all together and used to remove humidity. Pretty sure the engineers designed them fans to cool down cpu's and didn't have humidity in mind. smh
![[UA] NAVI vs MOUZ | BO5 | IEM Rio 2024](http://i.ytimg.com/vi/CMBYk0cbGoA/mqdefault.jpg)
Sir, i have three CPU Fans each rating 12v 0.51amp. I designed same circuit that you are shows, bt the problem is fans are not running ..only one fan is running as a slow speed, how i designed the circuit please help me.
Can't we connect these four fan directly to the 12v 100ah battery?
I'd done it years ago and still working now. Quiet effective to throw room odor away
Greetings from Indonesia
Very nice and hard work . But would like to give you a suggestion. That you should use a laptop or any other adopter/charger of 220VAC to 12VDC 5A and connect these fans to it. That will aslo work fine.
Can we use a 12 volt adaptor instead of transformer??
Yes.
Good idea sirji 👍👍
Awesome video..... its a simple and easy way to make a exhauster fan with a low price.. 👌👌
I enjoyed your video and I inspired thank you very much
its easy to come by small fans from whatever.people throw completely perfect stuff away.i go to the dump and check the battery dump box with my multimeter,heh heh. ive set up small 6 volt batteries in series to run small fans for ventilation/heat. i am no expert,,,i was wondering why you used that blue(capacitor ???) or whatever it was,is that what you use to reduce to 12vt ???? it's cool to take stuff and make it into something useful yourself
Sir can you please explain which diode is used in this? I have the same fans and run by DC adopter.
At 3:42, you show the wires being fed through the metal plate without any protection from shorting out. Over time, the fan vibrations could cause the wires to rub against the sharp metal and then short out which could possibly cause a fire. The price of a simple grommet is very cheap insurance. Other protections could be heat shrink tubing, electrical tape or at the very least, hot glue.
but it is still working good! that is not a big issue.
im a FAN of this video;)
good work but why the capacitor? it is necessary?
+Seby yup. Capacitor reduce the DC pulses and make smooth output.
Can this set of fans take power from pc's USB port?
No
if i use 1 a tranformator, do i need condencator and diodes? is there no problem if there will be 12 v led fans?
+Paulius Pileičikas yes you will need a capacitor and some diodes to convert ac to dc.
THANKS!
same diodes and capacitor ill buy
So the capacitor and diodes are forming a rectifier circuit?
nice work. I just want to ask whatis the value of the capacitor you used and the transformer? thanks
3:09 thats what i was looking for... I have 3 fans i wanted to splice together... So you put all the reds together and the black wire
Very nice video sir
kitchen ka exhaust fan ka two way switch kaam kese kerta hai.. uske wiring ki jaankari aap bata sakte ho..
Can i make it with 8 cpu fan using 1 transformer?
Yes
I recommend you install a grille on the inside so no fingers will be chopped.
Preston Lo do you put fingers in CPU fans?
achha bhai ye agar mai 20 fan add karna chahu side by side, to fer mujhe kitneka transformer aur cap and diots ka jarurat parega>>>????
+Badhon Ebrahim hr fan k oper uska current dekho, usko total fans se multiply kro. Jo value ae gi us se double ka transformer diode and cap le lena.
mere sab hi fan 12v ke phone charger se bohout achhi tarase chalte hai, magar un sub ko individually alag alag charger se run karvana parta hai, to agar souch liya jaye ke mere every single fan 12v ka hai,
toh main agar apki advice follow karun to mere paas 12x20=240v ka fan to mujhe 480v ka single transformer or diode and capacitor lagana parega?
+Badhon Ebrahim volt aur chez hai, current alag chez hai. Fan ki pic send kro mery fb page pr. Aur by the way, 12V ka konsa phone charger hota hai?
vai hamlogoke general pc powersupply me jo hote hai na vo vala...
+Badhon Ebrahim hr supply mein same nahi hota. Power rating different hoti hai.
Wat the diodes for? Transformer not got the bawls to spin 4 fans? I would just personally get 120v case fans and would be more power efficient cuz with step downs , well look it up.., and would have nothing else besides the fans. Theyre cheap too.. like 12$ for 4 ..
can we not increase the speed of fans to max by changing the volt or d capacitor
+SATBIR Singh it depends on fans which are you using.
SATBIR Singh we can increase by increasing ampere or Voltage of supply but only upto a limit after that motor will burn or will slip.
Very good work, but please enclose that transformer so no one will touch it. 220v mains power is pretty dangerous.
+ted clubber lang thnx. There is no current in outer side of transformer. Also it is near to roof and not accessible easily.
Also, if you use four diodes in a "bridge rectifier" configuration, the fans will run smoother and cause less electronic noise for other devices.
+ted clubber lang there is no need a bridge rectifier for center taped transformer.
No more dangerous than 120v.. he would have same amperage breaker systems as 120 so depending on the overcurrent protection would be how dangerous it was.. also, they make cheap 120/220 v cpu size fans for like cabines and food stuffs...
Z Ack "he would have same amperage breaker systems as 120".... actually no, he wouldn't, and the reasons why are covered under basic electrical theory. You should probably stop spouting bullshit on the internet if you know nothing about the subject under discussion, especially when the subject is electricity.
can i use 12 volt charger
4 fans are more powerful, therefore creating more ventilation and suction, thus rearranging the air in the bathroom as well as more
power gaining speed!!!
Very good. Using AC cooling fans could eliminate additional circuitries. I think that would be more easier, just assemble the mechanical frame. Also, series connection isn't preferred there as one fan fault can stop the whole and also, any low voltage will drastically decrease all fan's speed. Parallel is preferred in my case.
Sir one fan costs around 250 rupees, so 4 fans means 1000 rupees. And that I feel is costly... Any sites to buy fans at a cheap price?
Use old one. Old fan price is 50 Rupees.
good video my friend ,like
+Jean Carlos Ramirez thanks
Easy home made project, Bravooo 👏👏👏. But is it effectively in kitchen? 🤔
Hi, greay job. I want to know if u can show me how to connect 2 car radiator fans to an electrical home outlet which is 120. If so let me know.
All you need is to find a plug in power supply (like the black boxes that come with electroics) if you look on that black box it will tell you what its output is. Find one that says 12v and the higher the MA. Milliamp, the better in your condition as car rad fans can take alot.. also on the black box make sure you see a symbolof _____ with a - - - - over top making solid line with dotted o top. That means dc.. then all you do is attach like wires on the fans and cut the end of the cable off coming off the black box (while unplugged) then attach one of those wires to one of the fans abd other wire to the other... put a switch in series with one wire to switch it. If you dothat and doesnt work, flip thr wires around (polarity). You wont hurt anything if you messup.. the power supply might cut offbut youreset by unpluggig and plugging bsk
Forget what Z Ack is saying about using a plug-in power supply, you wont find one with a suitable current rating. Radiator thermo fans can draw anywhere from 5 to 20 amps (60 - 240 watts) and you want to run two of them.
You would need a suitably rated 120VAC transformer with a secondary voltage somewhere in the 16-18 volt range. No, you don't want a 12V transformer because thermo fan motors are optimised to run off the 13.8V-14.4V output from the car's alternator, and the rectified DC output from the transformer will equal the RMS voltage of the secondary (not the peak voltage). Then you'd need to add some sort of rectification (a couple of chunky diodes would do) and some reasonably sized reservoir capacitors on the DC output.
If you can put all that together correctly, you'll end up with a very noisy way of moving a lot of air, as radiator fans are designed with airflow above all other design characteristics... they are not designed to be quiet. You could also buy a suitably rated 13.8V bench power supply (as used by automotive electricians for testing purposes), but these are expensive. I'm not sure what your specific application is, but in 95% of cases it will be much cheaper and easier (and quieter!) if you just buy a suitably rated 120VAC fan.
Kiya aap Karachi se Hain agar aap Karachi se Hain toh Kiya aap mujhe Bata sakte hain k power bank circuite kaha mile ga
you should've placed the transformer outside. Aside from making it hidden while making your room aesthetically clean, it will also keep the x'former from heating up. I guess its size is not much of an obstruction, besides that 4 fans will make it overheat for sometime when on...
+Deonicius Diez this transformer can handle loads up to 3Amps. And the each fan have only 0.27A max load.
There's a big difference between load capacity vs endurance. Even appliances short and overheat even if their parts are made for the load. you expect a gadget to run longer then heat is your worst nightmare... just sayin'
+Deonicius Diez i can't understand what do you want to say. But a 3A transformer can easily run 1.1A load of 4fans over night without heating.
I doubt the transformer won't heatup especially if the room is itself warm. I've in electronics for 15+ years now and not in my experience i've handled a part that wont heat up unless its Japan made. I'm not sure if you are in a 4-season country but for tropical to uberwarm countries, a little precaution may help...
No. The proper answer is to forget making your own deathtrap power supply and just use a simple power supply that is commercially available. While the idea of the fans is neat, the power supply part is by far the most dangerous. Just buy the proper supply and forget the tape, capacitors, and other cobbled electrical dangers.
but bro apne ye jo thick matel ki sheet use karii wo kahn available ha?????
+Babar Khan aluminium angle hai wo, market mn available hai easily.
Ok boss shukria
what if i use a solar panel instead?..do i need a capacitor for that?
you can use a solar panel. no need a capacitor.
Can we use 12v ac dc adapter?
u can
Can i use a laptop charger will it work same as in your video??
Use any 12VDC source
@@EasyHomeMadeProjects the fans are in series or parallel?
kya mobil charger se kam bn jayega
+SACHIN PUNIA no
Very good perfect
interesting . I like your homemade projects.
thnx
Nice Work. ap ne Drill Machine kitne ki li or kis company ki hai?
+Usman Khan thnx. Aam china ki h. 2400
कितना साल या महिना तक टिकेगा?
Se aplica para 125CA en vez de 220CA...?
you should enclosed transformer into a plastic box so that the looks will be nice.
what is that color blue?? specification of that?
+Jonathan Ozarraga it is a capacitor. Specifications are mentioned in video.
PC Fans?
Where is the transformer connected to
What happen if no capacitor & diode as u used, bro..?
+mohd afirool fans will start vibrating instead of rotating.
Easy HomeMade Projects amps consumption for your fans?
Saleem Ahmed Thank you
Ak fan ki Price kya hai????
Thanks for sharing the details.love u
You forgot to mention that you need a drill to make those holes...
Bahot barhiya bhai ! Aise hi video banate raho. Electric chimney ka bhi video bana dete to accha hoga !
nice one
At 5:29, you fail to show the use of plastic wall anchors. It is not a good idea to directly screw into a wall because over time, the fan vibrations will weaken the strength between the screw threads and wall material. Some inexpensive anchors will help the installation to last a long time.
Obviously they are used but off camera. common
Nice Work. One can also use zip ties ,
+Ch.Muhammad Imran yes you can use.
can you make one for me with BLDC motors and sell?
nice job
Add shutters behind so no backdrafts will come back in.
devider katnai ammp ka haan ?
How about air flow (m3/h) capacity ?
Mugi Raharjo Capacity = Area of Fan Blades (whole circular opening) x Velocity of air
Pax intellivent is the way to go!
cool but i cant find 4'' fan :( maybe next time
At 3:09, you missed a VERY important step: insulating all the positive and negative wires, not only from each other, but also from the metal plate!
insulated using a transparent tape. btw thank you so much for such interesting point outs.
Great work but you did not show how the on/off switch is fixed.
+Healthy Habits Africa Ltd simple on of switch as other appliances. Like fan, bulb etc
What's the voltage output across the capacitor?
12V DC
Easy HomeMade Projects as there is no rectifier, the o/p is not pure DC. Is it working fine?
+bharath naidu watch complete video. There are 2 rectifier diodes connected.
nice..
can i use 1A tranformator???
yup
so do i need condencator and diodes? is there no problem if there will be 12 v led fans?
hey easy homemade project what is your name
Seems overkill? Why not use a spare 12V/1A switching power supply (from an old router or switch) and just connect that to the black/red wires from the fans (the yellows are only for motherboard monitoring) and avoid all the dangerous stuff!
1 of these common 'wall wart' power supplies will easily run 4 computer fans and since you are only dealing with 12V then you mitigate the dangerous part.
Make sure you solder the connections and use heat shrink electrical wrap to cover the connections.
Easy.
PS - for a washroom or place with moisture, isn't it easier to buy a $20 extraction fan designed for this purpose?
amazing idea buddy :-)
thnx
no music , thank god .
would have been somewhat helpful to hold up a piece of tissue or something light just to see how strong the air outflow is. We cant tell from the video :o/
u can use 5v or more, if u want slower fans
or use mobile charger
Ji run I have a 5v fan with a built in speed controller
about how much air do they move :D
is fan ka price bata do bhai
+Raj Sahu 0.5$ each. (Old)
couldn't you just wire them to a usb and then plug it in to a power point usb charger?
+goobie87 we can't. Because usb port have only 5V. And these fans are 12V
is a still work m87
it will spin very slow
I want to do this to cool my fishtank area can a plug be attached to be plugged into 110v outlet?
Dean, just substitute a 110 volt transformer for the 220 volt one in the video.
Bhai canation nahi samj aya
This a one way fan setup. Just thought I would mention that.
nice
good one
Are those of case fans lol this is the only reason I need to cool my room doesn't even have a window
lol guessed it
with a sledge hammer and house owner consent, you can have any size window you desire. Even better if you can use a drill to make a hole.
plz make hover craft you can get idea from navind kumblay
the wire gauge seems a small...
good
if you do so i think you could got million views
ভাই আমি একটা কিনতে চাই।
দাম কতো?
Ok now i need face size window on my wall
which country u from
trap: my opinion would still remain the same...
It's India mate
I'm pretty sure his house insurance wont cover the fire that will occur being it wasn't tested by or have the UL- " United Laboratories " stamp/sticker to wire them fans all together and used to remove humidity. Pretty sure the engineers designed them fans to cool down cpu's and didn't have humidity in mind. smh
very cheap nice
muito legal
obrigado
gonna try this but using my unused computer psu
freak ever â
50ct for a fan? wo...
Not bad 👍
its cheaper to buy one and be done...
not if the nearest store that sell it, sit 25km away from your house
muy bueno
u should reverse two of them to make a way for air to circulate
Then it wouldn't be an exhaust fan.
I think he made two set of this fan, one is to pull air from outside and the one we saw in the video for the air in the room to go outside.
plz i want you to make pakistan proud
+Danial Ahmad thnx. Ok i will
thanks