What great video. I just took a discarded microwave apart and saw the fan. Thank you for the explanation and the schematic. You are very kind to share your great project and knowledge.
I have an Ohmite vintage fan that is just like this. It's got a round two piece enabled steel case that comes apart with two nuts. Inside is a microwave oven fan motor. There is a switch in the middle of the power cord like a table lamp. The 6" fan blade is a two bladed thing made of flexible plastic. It sits on a chromed steel circular stand you can move up and down. I got it yesterday for $3.00 at a thrift store, put some electric motor oil on the bearings, and it works as good as electronicsnmore's fan does; except without the nifty speed control. No wonder they don't make stuff like this, ultimate construction simplicity, standard microwave oven fan motors last a long LONGGG time, steel body and stand take some abuse. The back of it has a lot of holes, there are lots of the ventilation holes, but there are what looks like holes perfect for mounting different motors or maybe they they thought about an onboard switch. Well the holes are there, they were planned for something.
That is a really nice project you did there, WAYYYY More high quality than actual fans sold at walmart and places like that. Very informative video, I enjoyed it :) At least microwave oven manufacturers bother to put good motors and well-balanced blades in their products
I have no need to buy a CFM meter. The volume of air this fan can move is very large. The microwave oven fan on high speed will likely do a better job than a fan you would purchase at Home Depot or Lowes.
You are getting carried away, and making this into a big deal. Just use a microwave oven fan. I supplied the idea. It is now up to you to decide if you want to use that idea. Thanks.
Great idea there! Instead of having two speeds, perhaps you could put a variable speed controller in there. Then you could just rotate a knob to adjust the speed.
Hey, that looks really good, I found your video because I did the same thing and wanted to know how many watts it was using. Cheers for uploading this I'll have to check out more of your channel later
The link to the schematic is no longer available. I know I'm saying this like 10 years later, but. Would it be possible for you to share it again, please?
Hi i work with 220VAC what diffrence change in capacitor? And i would the fan low noise. There are possibilty to add a Dimmer? without switch? Agree reply. Tks
mate i have a fan from a microwave... only two wires brown and yellow, no pole marking on it anywhere, which colour you think is live ? dont just want to assume brown.. cheers
@@electronicsNmore Actually, having a motor with 3 terminals is much better than 2. Because, motors with 3 terminals have 2 speed windings. So you don't need a capacitor to change the speed. There should be a sticker showing you which one is Neutral, Low, and High.
Hello do you have a video or can you make one on witch cable to what pin the fan has i dont really know. Like where would live side go or hot and neutral oh and ground?
electronicsNmore - My fan has three pins, so live goes to the switch and then to the cap and the fuse then to either pin? Same with neutral either pin? Sorry like i said im new to this.
Sure. You must use a 230v microwave in Holland. The fan inside a 230v microwave should be rated for 230V Thanks For Watching! Be sure to check out my video playlists.
can you share the math with capicitor? What stats are needed to make it safe. What stats control speed. this is great I have three now and will keep getting more. would like to have 4 speeds. the motor is a tank. If it has enough torque could be useful for a knife sharpener.
Says "Take the fan out and throw the rest of the microwave away." Then I scroll through the videos and see "How to make 1000 amp metal melter from microwave oven transformer." Lol, Hey, it made me subscribe😜🤣😂👍🏼
No, the car uses DC, the fan operates using AC. If you buy a cheapo cigarette lighter power inverter 60-75W, then you can power it with that. Thanks for watching!
thanks man for the video. Just a question: I have a similar motor but rated for 220v. When I teared down the owen i kept the capacitor too, a 1uF/2100v (a little big but doesn't matter). Can it work?
Thanks I have 3 of these fans now. The fan, magnets, micro switches, all great parts. I want to use the timer switch for my solder iron station. That way I will not leave it it by accident. Thanks for you vids. Never would have known about the parts before you video.
Somehow I flagged your comment (iphone makes the pop up JavaScript invisible but still allows me the ability to hit one of the options). Your comment was that it was supposed to be SPDT...but will DPDT work?
I just realized you got a 40w motor, so you used a 3uf cap. I’ve got a 20w motor, so should I use a 1,5 uf cap? (I tried the 3uf capacitor and it didn’t slow down the motor at all)
Did you notice which 2 terminals had wires on them? You can use a digital multimeter and measure the resistance across the terminals, Look for the 2 terminals that give you the highest Ohms reading. Thanks For Watching!
Hello! I made everything very clear in the video. If you're not sure, you really shouldn't be playing around with mains power. You could get shocked. To learn more about electronics, please visit "talking electronics" website. Thanks
+electronicsNmore Alright, first time I didnt hear about the condensator and now ive seen the diagram in the description. I have one that says 0.9 µF and 2100V AC.Would it work or should I get one more similar to that of the vídeo? I got it from the same microwave that the fan.
Jerry Thompson That is highly unusual. The solution is to remove the 2 screws and nuts holding the fan/rotor in place, then flip it around to the other side and bolt it back together. :-)
Very easy, Place the fan blade inside a metal dryer vent tube, and in front of the fan blades you would install resistive wire made into coils. Try 20ga A-1 resistive wire.
I ordered a couple of 3uf 250 volt capacitors for ceiling fans online for a few bucks each. Thanks for the reply. I'm working on my microwave oven fan as we speak.
Brilliant idea couldn't you use a housing off a 12v 6" fan and adapt it could do with an earth to be safe the cap idea 3uf great stuff thank you I have 20 of these lol I will be busy lol
liljoey112 No. (6) 3.3uF caps in series equals only 150V(Too low), and the rating drops to 1/6th of 3.3uf or .55uf. (6) in parallel equals 25V rated at 19.8uf.
electronicsNmore 33uf 25v radial Tantalum caps should work correct? Also if i wanted another speed all i would have to do is increase the capacitance correct?
No. Tantalums are electrolytic. In order to make a NP cap from electrolytic caps, you connect the (2) neg leads together from (2) electrolytic caps and use the 2 pos leads as NP. More capacitance = more speed.
It's very simple. You need a SPDT switch, and the correct capacitor. Center is off on the switch. One leg of the switch goes directly to the fan and the other leg goes to the capacitor then to the same fan terminal. The other fan terminal is connected to the other leg of the AC line(Neutral). Thanks for watching!
@@electronicsNmore So it means, if i want to reduce fan speed 220vac in a 220vac system, i must add a capacitor Nonpolar 1uF 400Vac connected series to the fan?
It is. Any time you can take items from the trash and turn them into highly useful things, that is a real accomplishment. This fan is the best fan I ever owned. I've used it for years. If you feel that way about my video, then maybe you should stick with videos pertaining to hydroponics/Cannabis. :-)
I´m very sorry from my sister Daniela Martins I Like Your Videos are so Very Cool mate make a video of homemade vacuum cleaner fan centrifugal type with wood material
Why are you advising someone to throw the rest of the microwave away? I know that there's a dangerous capacitor in there, but discharging a capacitor should be no big deal for someone who is able to wire up a fan like that. For another thing, there are tons of other useful components in the microwave (including the capacitor!) that an electronics hobbyist would love to have. Not to mention the scrap value of the rest of the microwave.
Clearly you have not seen my other microwave oven videos. I suggest you do watch them. :-). I never advised to throw the oven away. If the AVERAGE PERSON was unable to repair a microwave oven(NOT into electronics), then keep the fan before throwing the oven away and make this easy project. I wanted this project to be simple, and also wanted to make sure people avoided the HV capacitor. Thanks For Watching
B. Urtzerka You don't know what you're talking about. This fan has been in use for YEARS on my desk. I guess you failed to notice the holes in the enclosure to allow air flow.
![Seungmin "그렇게, 천천히, 우리(As we are)" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/kAzmhLHePqU/mqdefault.jpg)
What great video. I just took a discarded microwave apart and saw the fan. Thank you for the explanation and the schematic. You are very kind to share your great project and knowledge.
Glad you enjoyed the video! Be sure to share my channel with many others, or videos like this may not be uploaded in the future. Thanks
I got several of these laying around. Might have to make one. Old microwaves are a gold mine of useful parts.
Thanks for watching Fred!
So are these new pod coffee makers. More cool freebies.
I was saving a few of these fans for just this project . I also have a few of the more rugged fans from a self cleaning oven
I have an Ohmite vintage fan that is just like this. It's got a round two piece enabled steel case that comes apart with two nuts. Inside is a microwave oven fan motor. There is a switch in the middle of the power cord like a table lamp. The 6" fan blade is a two bladed thing made of flexible plastic. It sits on a chromed steel circular stand you can move up and down.
I got it yesterday for $3.00 at a thrift store, put some electric motor oil on the bearings, and it works as good as electronicsnmore's fan does; except without the nifty speed control.
No wonder they don't make stuff like this, ultimate construction simplicity, standard microwave oven fan motors last a long LONGGG time, steel body and stand take some abuse.
The back of it has a lot of holes, there are lots of the ventilation holes, but there are what looks like holes perfect for mounting different motors or maybe they they thought about an onboard switch. Well the holes are there, they were planned for something.
That is a really nice project you did there, WAYYYY More high quality than actual fans sold at walmart and places like that. Very informative video, I enjoyed it :) At least microwave oven manufacturers bother to put good motors and well-balanced blades in their products
The Shroomer 98 Yes, the quality and air flow is far better than fans you'd buy. Thanks for watching!
Please can you show us the schematic for this little fan as it is difficult to see the actual placements of the components.
Wish to make a bathroom fan with this in the future. How many CFMs does it blow?
stormblade123hsm I have no idea how many CFM's, but I can tell you that running the fan on high will definitely pull a lot of air from a bathroom.
Nice! But I will only run it on a on/off switch. So it is full speed or off. You can use a CFM meter that you can buy.
I have no need to buy a CFM meter. The volume of air this fan can move is very large. The microwave oven fan on high speed will likely do a better job than a fan you would purchase at Home Depot or Lowes.
electronicsNmore But can a Delta EFB1212HH computer fan move more air than the microwave oven fan?
You are getting carried away, and making this into a big deal. Just use a microwave oven fan. I supplied the idea. It is now up to you to decide if you want to use that idea.
Thanks.
Which 2 wires to use out of three?
Great idea there! Instead of having two speeds, perhaps you could put a variable speed controller in there. Then you could just rotate a knob to adjust the speed.
Hello! The picture of the schematic is no longer available at the link in the description. Please put it back. Awesome video! Thank you!
I'll add it later
OK. New link posted!
@@electronicsNmore Thank you!
Can I use my dc power supply to run it on dc
No
Hey, that looks really good, I found your video because I did the same thing and wanted to know how many watts it was using. Cheers for uploading this I'll have to check out more of your channel later
The fan on high draws around 40W. Thanks for watching!
now got one mv fan would try to make this would work good as a fan or extractor ..
The link to the schematic is no longer available. I know I'm saying this like 10 years later, but. Would it be possible for you to share it again, please?
Hi i work with 220VAC what diffrence change in capacitor? And i would the fan low noise. There are possibilty to add a Dimmer? without switch? Agree reply. Tks
Use a capacitor rated at least 400V, 630V is better. Double the capacitor value used in this video.
I can never throw the transformer away. That is the best part of the whole thing.
I agree, but most people will have no use for it.
@@electronicsNmore I made a welder, ligtenberg machine and nice power supply out of them. They are so useful.
Could put us through how you did that? I have got one too from a Samsung microwave lying around
mate i have a fan from a microwave... only two wires brown and yellow, no pole marking on it anywhere, which colour you think is live ? dont just want to assume brown.. cheers
+Magna Carta
Hi there. Usually there are only 2 terminals. If you see 3, then only use the outer 2 terminals. Thanks For Watching!
@@electronicsNmore Actually, having a motor with 3 terminals is much better than 2. Because, motors with 3 terminals have 2 speed windings. So you don't need a capacitor to change the speed. There should be a sticker showing you which one is Neutral, Low, and High.
Hello do you have a video or can you make one on witch cable to what pin the fan has i dont really know. Like where would live side go or hot and neutral oh and ground?
Hi Robb. The live(hot) wire always goes to the switch first, the neutral wire connects to one wire of the fan.
electronicsNmore - My fan has three pins, so live goes to the switch and then to the cap and the fuse then to either pin? Same with neutral either pin? Sorry like i said im new to this.
Great video sir. Thanks for the cautions too. Got to be careful out there.
I have a 4.7 uf / 450v, can I replace the 3uf / 250v with it? I ask because I popped one already and I'm trying to do a little CSI on my error.
can i use this fan on 230 volt i live in holland and we didn t have 115 volts
Sure. You must use a 230v microwave in Holland. The fan inside a 230v microwave should be rated for 230V
Thanks For Watching!
Be sure to check out my video playlists.
can you share the math with capicitor? What stats are needed to make it safe. What stats control speed. this is great I have three now and will keep getting more. would like to have 4 speeds. the motor is a tank. If it has enough torque could be useful for a knife sharpener.
What kind of capacitor did you use? electrolytic capacitor? Polyester capacitor?
Non-Polar capacitor. I think it was polypropylene.
Says "Take the fan out and throw the rest of the microwave away." Then I scroll through the videos and see "How to make 1000 amp metal melter from microwave oven transformer." Lol, Hey, it made me subscribe😜🤣😂👍🏼
Actually, I have many videos showing uses for MOT's. :-) Thanks for watching!
What capacitor should I use for 220V line?
120V fan on a 240v line? If so, use half the uF rating shown in the video, and make sure the capacitor is at least 400V rated.
I have 220V fan and will use it on 220V, thanks for the answer.
Master4o Use a 400v rated capacitor.
Hi, thank you for sharing this. In Europe we have 220V, so should I still use a 3 uF but rated for 400V?
Use 1.5 to 2uF.
@@electronicsNmore could you please show what type of capacitor you used, since you can't tell from the video? Thank you
Is it possible to make a microwave fan plug into a cigarette lighter to use as a fan in a car without a/c or would it draw too much electricity?
No, the car uses DC, the fan operates using AC. If you buy a cheapo cigarette lighter power inverter 60-75W, then you can power it with that. Thanks for watching!
Could you post the schematic somewhere else? the picture is no longer available.
how did you make the carcass?
Hi there! I tried to use a motor capacitor 3uf 250v, but it didn’t slow down the microwave fan...
should I use a dc capacitor?
No, never use DC caps for AC. The 3uF value must be too high.
thanks man for the video.
Just a question: I have a similar motor but rated for 220v. When I teared down the owen i kept the capacitor too, a 1uF/2100v (a little big but doesn't matter). Can it work?
I wonder if a 1.5 uf cap would work...i suppose ill try it.
would a 2uF 250V Capacitor work? Pulled it off another household fan.
2uF may not be enough. The fan may hardly rotate on low. Look for a 1uF/250v or higher and parallel the caps.
Thanks I have 3 of these fans now. The fan, magnets, micro switches, all great parts. I want to use the timer switch for my solder iron station. That way I will not leave it it by accident. Thanks for you vids. Never would have known about the parts before you video.
I have a fan with 3 poles.... Please help me to know how to wire it.....Why 3 poles......
Please share diagram..... Illustration
How did you wire your microwave cool fan can I use a usb
Another towel diaper genie, asking stupid shit in misspelled butchered English . What a surprise.
I see from your provided diagram that you have listed your switch as an SPST switch. Could you have meant a DPDT switch?
Somehow I flagged your comment (iphone makes the pop up JavaScript invisible but still allows me the ability to hit one of the options). Your comment was that it was supposed to be SPDT...but will DPDT work?
metamech
Use one side of the DPDT.
I just realized you got a 40w motor, so you used a 3uf cap. I’ve got a 20w motor, so should I use a 1,5 uf cap? (I tried the 3uf capacitor and it didn’t slow down the motor at all)
A lower value will slow the fan down, yes try the 1.5uF.
Cool idea
Thanks Steve! Be sure to rate thumbs up, check out my extensive video playlists for other great videos of interest to you, and share.
Hey just a question. You didn't say which terminals of the motor should I use. Which ones should I use? there are 3.
Did you notice which 2 terminals had wires on them? You can use a digital multimeter and measure the resistance across the terminals, Look for the 2 terminals that give you the highest Ohms reading.
Thanks For Watching!
No :/ I was so excited I didn't notice. Oh! Ok, thank you very much :)
electronicsNmore Is it ok if I use a 1000uF/200V capacitor?
WAY too much capacitance!! Use close to what I did in the video.
electronicsNmore Ok, thanks :D
cool video, id like to know, to do This, do i connect it directly to a plug(i have a wire also from a microwave) or what should I do?
BTW Im asking This out of my ignorance, take in mind.
Hello! I made everything very clear in the video. If you're not sure, you really shouldn't be playing around with mains power. You could get shocked. To learn more about electronics, please visit "talking electronics" website. Thanks
+electronicsNmore Alright, first time I didnt hear about the condensator and now ive seen the diagram in the description. I have one that says 0.9 µF and 2100V AC.Would it work or should I get one more similar to that of the vídeo?
I got it from the same microwave that the fan.
A microwave oven capacitor is fine, but you need to use 3 in parallel. I'd just buy the smaller, correct size cap online.
I got my fan out of the microwave but my fan is running counter clock wise how can I get it to run clock wise?
Jerry Thompson That is highly unusual. The solution is to remove the 2 screws and nuts holding the fan/rotor in place, then flip it around to the other side and bolt it back together. :-)
+electronicsNmore What would you recommend for forced hot air? How would I add some kin of heating element to it?
Very easy, Place the fan blade inside a metal dryer vent tube, and in front of the fan blades you would install resistive wire made into coils. Try 20ga A-1 resistive wire.
Quick question.. how did you end up using a 1amp fuse?
I used a 1A fuse because the fan only draws 40W on high(1/3A)
Thank you
Hello, I have 230v 50Hz, so I used a 400v capacitor. but this doesn't slow the motor down at all. Am I missing something?
Sky L What value capacitor?
47uF... ok maybe it is too large? It was the only capacitor I've got for 400v.
It's pretty hard to find a 3uf, 250 volt non-polarized capacitor. I normally only work with DC. Do you have any specs or links for the capacitor?
You can parallel up (2 or 3) 250v capacitors as well. You can find high value capacitors in many ceiling fans.
I ordered a couple of 3uf 250 volt capacitors for ceiling fans online for a few bucks each. Thanks for the reply. I'm working on my microwave oven fan as we speak.
You will definitely like the fan. I use mine all the time.
+electronicsNmore Why does the capacitor act similarly to a resistor?
Capacitive reactance. Only works using AC, not DC. :-)
www.electronics-tutorials.ws/filter/filter_1.html
i took it apart and forgot where the ground wire goes? anybody know!?
Brilliant idea couldn't you use a housing off a 12v 6" fan and adapt it could do with an earth to be safe the cap idea 3uf great stuff thank you I have 20 of these lol I will be busy lol
Glad you liked the idea. I still have and use it to this day.
Hello, I have A question instead of one 3uf 250v cap can i use 6 3.3uf 25v caps in parallel?
liljoey112 No. (6) 3.3uF caps in series equals only 150V(Too low), and the rating drops to 1/6th of 3.3uf or .55uf. (6) in parallel equals 25V rated at 19.8uf.
electronicsNmore Okay so, if I use 10 33uf Caps it will be safe? I am sorry im trying to use what i have.
(10) 25V/33uf caps in series is 250V/3.3uf. You do realize you need Non-Polar caps. Electrolytic caps are no good.
electronicsNmore 33uf 25v radial Tantalum caps should work correct? Also if i wanted another speed all i would have to do is increase the capacitance correct?
No. Tantalums are electrolytic. In order to make a NP cap from electrolytic caps, you connect the (2) neg leads together from (2) electrolytic caps and use the 2 pos leads as NP. More capacitance = more speed.
May you draw schematic for this project? Very hopefully. Thanks..
It's very simple. You need a SPDT switch, and the correct capacitor. Center is off on the switch. One leg of the switch goes directly to the fan and the other leg goes to the capacitor then to the same fan terminal. The other fan terminal is connected to the other leg of the AC line(Neutral). Thanks for watching!
@@electronicsNmore So it means, if i want to reduce fan speed 220vac in a 220vac system, i must add a capacitor Nonpolar 1uF 400Vac connected series to the fan?
I want to know how to connect the electric wire to the microwave fan I'll try to do it.
Thanks For watching.
I posted a link in the video description area.
Please share my videos with others, rate a thumbs up, and subscribe.
I didn't know you were famous! since you have so many fans ;D LOL.
Does it ever bite you ¿
The Sqoou No
This type motor works without capacitor.
The cap is used to reduce fan speed.
Micro owen fan motor not need housing .don't forget to lubricant bearings when propeller is not free on tach.
IT HAS 3 PINS L|N|H (L=LOW) (N =NUETRAL) (H=HIGHER)
iS THAT CORRECT?
The switch has 2 positions(SPDT) with the center OFF.
electronicsNmore I connected with UPS AND 1st and 2nd is running on 260/250
But 1st and 3rd also same power it tooks
The 2nd and 3rd one shorting UPS turns off when connected to them
1st and 2nd connected
nice... u should use a pot for variable speeds since u've already done the work with housing.
I need the diagram for this circuit asap
It was well explained in the video. The circuit is extremely simple. Thanks for watching
very nice VDO
I just have 2 microwave fan
yesterday I buy 2 old microwave at 420 bath(฿) or 14 $ to make MOT DC arc welder like YOU sir.
Good Luck with everything. Post a message if you have any issues.
electronicsNmore Sir. can you drow SCR controler schematic for MOT DC arc welder to me
f22raptorang@gmail.com Thank you so much Sir
COOL pun intended. I would like to reverse it to suck solder fumes away, at least part of the time
lol your talking like this is a real accomplishment. so proud.
It is. Any time you can take items from the trash and turn them into highly useful things, that is a real accomplishment. This fan is the best fan I ever owned. I've used it for years. If you feel that way about my video, then maybe you should stick with videos pertaining to hydroponics/Cannabis. :-)
tommy76
waterproof it, add some pvc, a filter, etc. homemade water pump
BrokenCapo resistors cause heat. You don't want heat
way better than the Chinese made garbage we have today like at Walmart.
It is, and I'm not just saying that because I made it. :-)
Sorry just noticed the link
Motor heats up qickly
Your ventilation holes are too small. I operated mine for years with no problem.
neat
good a fan make a verry fast
Thanks for watching!
I´m very sorry from my sister Daniela Martins I Like Your Videos are so Very Cool mate make a video of homemade vacuum cleaner fan centrifugal type with wood material
Why are you advising someone to throw the rest of the microwave away? I know that there's a dangerous capacitor in there, but discharging a capacitor should be no big deal for someone who is able to wire up a fan like that. For another thing, there are tons of other useful components in the microwave (including the capacitor!) that an electronics hobbyist would love to have. Not to mention the scrap value of the rest of the microwave.
Clearly you have not seen my other microwave oven videos. I suggest you do watch them. :-). I never advised to throw the oven away. If the AVERAGE PERSON was unable to repair a microwave oven(NOT into electronics), then keep the fan before throwing the oven away and make this easy project. I wanted this project to be simple, and also wanted to make sure people avoided the HV capacitor.
Thanks For Watching
Cb b
An induction fan needs to breathe = NO enclosure. That coil will get red hot real quick, if fan not pulling air over it.Bad idea, don't do it kids.
B. Urtzerka You don't know what you're talking about. This fan has been in use for YEARS on my desk. I guess you failed to notice the holes in the enclosure to allow air flow.
the good thing about these fans is that they last a lifetime