12V 100A DC from 220V AC for High Current DC Motor using Old Microwave Oven Transformer - Part 1
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- Опубліковано 2 бер 2019
- 12V 100A DC from 220V AC for High Current DC Motor using Old Microwave Oven Transformer
PART 2 VIDEO - • 12V 100A DC from 220V ...
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#12v #220v #highcurrent #dcmotor #motor #transformer - Наука та технологія
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Hey did yours overheat? Mine did after a few minutes, and after I thought about it, microwaves are usually only on for a few minutes to heat your food, so they might not be designed to run for long periods of time like if you were to use it to charge batteries for example. Do you think if I were to add extra windings to the primary it would help stop it from overheating?
Hjh
@@johnruscigno5738 need to order custom 100A transformer
@@vistanationrockafellaz yeah you're right. I just enjoy experimenting with stuff like this. Trying to find 100amp diodes is difficult too. I tried those big 10 amp diodes and made a bridge rectifier but they popped like popcorn the moment I connected the terminals.
I found that putting a resistor on the positive output limits the current draw and after that the transformer was warm but not hot.
It can be a wonderful tool for running the cars during a battery charging performance
Wow another great demonstration your about the only one from you tube that is real and not fake
this is real, about to go try it out. Thanks man.
May be the fun can't cold that transformer, use water cool with motor pump or freezer system cooler
BRAVO how mani turns you made this secundary.Thanks
Great skill u make it look easy other people make it difficult to understand
Nice project, well done video 👍
Did you find the transformer issue ?
I believe it's from the eddy currents caused by the loose plates.
Compare this transformer now, with how it was BEFORE tear down.
The plates are compressed,welded, and resin sealed under vacuum .
But for now you could bolt it together using high grade non-magnetic bolts.
Good work..can you tell me the value of the capacitor please thanks have a great day..
Hi, I love your videos. Very education. Do you have a online site to get your metal perforated sheets?.
Thank you
Joe
Nicely done
Ola .. saludos .. desde Quito-Ecuador . Muy bueno lo que ase ... pero una pregunta .. Cómo es que se llama es coso azul... Y como puedo conseguir. . Los motores .. Como se llaman.. Y de cuantos voltios es el motor. . Gracias
.
Very good project 👍
Verry nice. You are not need a fan. The problem is the copper isolation and occuped space of secundary coil.
Wow crazy stuff like👍👍
Excellent presentation. 👍
thank you for really fantastic video. But you did not say anything about capacitor rating. will you please say that?
Good idea 💡
Very clear and clever ... thanks
These kind of motors requires a great current. From where you get this high mfd capacitors will you be able to keltron capacitors in this microfarad.
Hi buddy, I really like your projects and also the detail explanations that you are doing. Kindly provide some schematic diagram too if you do any further projects.
I m student I want to clear u that making tight winding will reduce vibration
What would you get if you converted a 240 volts a/c to DC and how would you be able to increase the AMPS on THE DC output
You are always limited to the capacity of the primary winding. A microwave is generally designed to run slightly below 1kW. 100Amps * 12v is 1.2kW. I highly doubt that this old microwave transformer was designed to handle that, thus it would blow up eventually. To increase the amps, decrease the number of winds on the secondary. It'll give you lower voltage but higher current. Also the wire used in the secondary in the video will never take 100Amps lol. This video is ridiculous
@@TheChrisey i know :)
@@TheChrisey also look at the primary wire connection its thin
Put this transformer on a aluminium plate and install some peltiers plate in paralel/serial to take the heat from transformer and convert it in to eletric energy and the same one you could feed a cooler .
Coincidentially, I too have the same multimeter as yours.
Your project is very educational, it can also be used as a battery charger, the transformer has very good amperage and with the two full wave rectifier diodes and the capacitor, the output of the 12 volts ac transformer is increased, transforming it into 17 volts dc, thanks Greetings from nezland City Mexico.
Hola. No se mira el numero del capacitor y como es la polaridad para conectarlo. Tienes esa información?
40 V 100MF CAPACITOR
Very nice what about value capast and birdge
Maybe add some taps into the secondary winding for different voltages. Maybe 5, 12, 15 and 24 volts...
Super FULL BRIDGE RECTIFIER!!!
By far the best build for a welder that I have found. Great job, one question. Since I am here in the states what would I get if I connect to 110v instead of 220v or do I have to connect to 220. I have a switch the I salvaged from a computer power supply that you switch from 220v to 110v, will that help? Thanks in advance and again great viceo!!!!!
You will get roughly half the voltage output. The voltage in the video is too high for a 12VDC system, so first of all reduce the 22 turns to more like 17 or 18 turns. Now double that, to give the same secondary voltage at half the primary voltage. This would also increase the primary circuit current by a factor of two, for a given load. It is simple ohm's law arithmetic here. When you get to high school you can learn stuff like this in physics class. If you are already out of school and you missed that, get a good book on electricity, magnetism, and safe wiring and electrical practices before you plug anything in to anything.
Ok selber gerade ausprobiert , gute Idee !
Is it possible to meltl precious metals? . . . . . . .
Like Cooper?
muito bom
Great 👍👍👍
Buenas noches amigo será que esa fuente se pude utilizar con motor 775?
Good.....love...u
Reducing the number of turns of the secondary will drop the voltage to get 14v?
How long could it run continuously and how did you measure the output current
Aku suka sekali, dengan ini jadi pelajaran buatku.
you cann t use this power supply for long time cause you use wire with plastic insulator. You can use varnished wire . The current you gated is only 25A as a max . you can use the law of transformer to know the volt or current from secondary side V1/V2 =I2/I1
THE ONLY PROBLEM IS THE DRAW OF A/C WATTAGE IS VERY HEAVY, BUT IT DOES THE JOB ,,, THANKS . NAIROBI ,KENYA.
Very nice bro
Nice bro
What is the capacitor rating that you used in thos project. Plz reply
Fantastic idea
I dont know what capacitor it IS, but its definitely too small.
Mr. Electron=नमस्कार
आप का हर प्रयोग एक दिशादर्शक होता हैं.
अब आपको एक कदम और आगे आ सकते हो.
मतलब जैसे,
1= प्रायमरी कॉईल का SWG (वायर गेज ) कितना हैं,लांबाई कितनी हैं, amp, oms कॅरिंग कॅपॅसिटी क्या हैं,
2= जो हम प्रोयोग (Demonstration ) कर रहे हैं उसका उपयोग असल जिंदगी मे कहा कर सकते हैं.
आप हमारे प्यारे हिंदुस्थान के लिये मार्गदर्शक बनने की हैसियत राखते हो.
धन्यवाद ¡¡
|| जय हिंद ||
Can it be used in prolonged electrolysis? And if we wanted to, what is the value of amps that achieve this
Will this work with 120 volts AC?
Hello sir, how long can you keep supplying 220 volts in primary coil?
Please answer me sir
Not more than 5 mins.. Could be lesser
an excellent idea - You are genius
Excellent
work
but this diode number (kbpc3510 )is not available In my area. Is it possible to use more than one
individual diode instead of that piece?
Thank you
ut this diode number (kbpc3510 )is not available In my area. Is it possible to use more than one individual diode instead of that piece?
How big is the capacitor ? Thanks
Can we convert low amps into higher amps ?
Mr. Electron the 750Watt Microwave oven has microwave oven transformer (MOT) core that is calculated for the 375Watt RMS out put power. So 375Watt : 10.5Volt = 37Amp Max Output current. That why it has a current shunts build in between primary and secondary coil.
Those are called magnetic shunts.
A consultation with the system can I start my scooter or which one would have the necessary current to start my scooter that my battery discharges
It can be use for welled
Can this capacitor handle 100A then?
Try to tell the truth as much as possible, a joy for you, a joy for everyone :-)
sorry I am new to electronics. Can you clarify why transformer was used?
you can put the transformer inside an airtight container and filled with vegetable oil such as linseed oil that is used for wood to protect it from heating
but this diode number (kbpc3510 )is not available In my area. Is it possible to use more than one individual diode instead of that piece
Strix Strix . Stropostropa(is electric arcing). I like this Videos. ❤❤🥰🥰
Esxelente video
De cuánto es el capacitador azul y de cuánto son los rectificadores
Make a electronic pawn shop tour
how about using a colling fan and a large light in the primary side. as a. current limiter. each to do.
Why a bldc fan for cooling? We can use high speed dc motor as fan..... But literally very good vedio. Next time please try the same with normal transformer and a few more turns of secondary thick wire, let us see what happens to the heating problem. I will be very eager to see that. Very well done. Congrats....
que numero de cable usas y cuantas vueltas?
How long can u run motor for > before it burns out transfomer ? is there any thing else which we can connected to take load plus keep trasformer cool, please let us know
Sir Electron can that transformer use inside single phase or 3 phase building compartment.Or need to order custom like MOT transformer.Last question if my solar pv producing 12v 8A or 12 32A by connecting to that transformer could it be possible to deliver me 220VAC 100A or 1000VAC 100A?
what guage number wire you use to do the coiling
Dear Mr Electron
Is it possible we do following
1) 12volt INVERTER DC To 220AC output
2) then use this system for running DC motor for paramoting BLDC motors RPM 9000 To 10000
i used one rectifir
Morning roses .... It is a good job .. Were you able to charge a 22 volt battery 70 amps .... All thanks, my dear brother ... Where do you live in any country .... Greetings
Great work man, is it possible to start a motorcycle using this method, just for a couple of seconds when the battery is dead?
Yes. Its work
Wonderful very nice
How mm??
You can use the same fan from the microwave.
wow, good video
12v Ac ,. 70amps Bridge Rectifier. , Capasitor value ?
Great! Hight current with microwave transformer
3:19 You touch the 10v AC with your bare hands but not touching 17v DC why? I saw many videos touching spot welder output (3v 600A AC). Please explain
Just remember that microwave oven transformers are made on the brink of saturation, they are not meant for continues operation out over 15 minutes. They will destroy themselves from heat over a longer period of time. If you want to avoid this, add some more primary turns to lessen the Volt/turn product a bit.
Exactly !! 😃 Working on that right now.
Nice project. I measured a MOT saturation curve, they are deep into saturation (maybe 100 VA) at nominal input. Another solution is to use two identical MOTs with primary windings in series, so that each one operates at half voltage. You can then wind the secondaries and connect to suit. This configuration would run much cooler even if the primaries are aluminium. I would suggest using much thicker copper wire if your target is 100A continuous capability. I have a YT video to show over 1000A from a single MOT transformer with a 2 turn secondary when I paid attention to keeping resistances low. I use it for wood branding art.
Cool information. Just want to ask, is it possible to run continuosly if you put some heat sinks and also fan?Thank you.
@@sikismeker The transformer is already forced air cooled in a microwave oven, it can only postpone the inner turns getting cooked, by a small margin.
@@KaizerPowerElectronicsDk i guess that aps transformers is way better than. I,m try to buildl power supply 2kw for HHO.
Is it possible to make 10A or more output by rewinding a small 9V radio transformer? I have made 2 turns in the secondary of this small transformer but I am getting no current.
How much volt and how much uf of capacitor is used in it?
👍
you are very good
It is much better to use a single bridge rectifier module rated for the full design current. You need to solder those twisted wire connections, too. That is very dangerous.
A normal 12v lead acid deep cycle battery, after it has rested for 24 hours with no charging current or load applied, should be around 12.65 volts. The normal float or maintenance voltage for keeping the battery charged when under light or no load is about 13.4 to 13.6 volts. A good bulk charging voltage is about 14.4 volts up to the 80% state of charge.
You read 17.96 volts with the 22 turn secondary. so, that is about .816 volts per turn. Simple arithmetic will give you the number of turns you should try now, for the correct voltages for a 12v system that includes a battery. The closest number of turns to what should give a good float voltage for keeping your battery charged would be 17 turns. But you would want 18 turns for bulk charging and maybe also you might want to use 16 turns for long term float charging. So, if you tap your secondary coil at 16, 17, and 18 turns, and make connections with a switch rated for the max current or else use jumpers and terminal strip, you could manually switch voltages depending on what you are trying to do. If you will not be worried with charging a battery, you still want to lower your voltage a bit to extend the life of your DC components.
Your microwave transformer is perfectly designed for use in a microwave oven. Microwaves are typically used for less than 10 minutes with typically a kilowatt of power used. You do the math on max allowable current. But remember, this is for a very light duty cycle! That transformer is not meant to be dissapating even the magnetizing current indefinitely. So, your transformer is INADEQUATE for your application. Please, think about what you are doing. Microwave transformer cores are fine for building things like spot welders where they are only energized for a few seconds up to, with low loads, a few minutes. Not for a DC system general power source!
Finally, where are your circuit breakers and panel meters? You need as a minimum, a shunt ammeter and voltmeter on the secondary and honestly I would want one on the primary, too. These are very cheap on amazon, ebay, or aliexpress. And you need to decide what current your secondary circuit can carry according to the wire gauge, and rate your secondary circuit breaker below that.
Videos like yours are fun to watch but dangerous for idiots to watch who think they can do the same thing you are doing, and then burn their house down or electrocute themselves or destroy expensive equipment. If you can't do this safely, please, don't show other 12 year old curious georges how to cause a catastrophe.
How many amps the primary coil does it draw?
Secondary 12 turns but what is the gauge or sq mm of that wire?
which music is this
What is that direct current or you use 12 bolt battery?
Quantas voltas foi enrolando no secundário
Cap value
Bohot acha hai
HI why you connect 02 RECTIFIERS i dont understand please help with shématic wiring
But there is no load on the motor(s) so it's not drawing the amps.....it will spark at start up but once it starts and is running free the back EMF will balance the incoming voltage and no current will flow......correct me if I'm wrong.
How many UF is the capacitor?
Please mention their capicitor value
How do you wire it to power your home ?
Mr. It is possible to series connected 2 pcs. Of 220vac transformer and power it up with a 380vac. Thanks men
sir. Show it by making a generator of Sir Two HP