Is it easy to create your own Transformer? Everything you need to know about Transformers! || EB#42
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- Опубликовано: 26 июн 2024
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www.robkalmeijer.nl/techniek/...
www.electronics-tutorials.ws/...
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www.joretronik.de/Web_NT_Buch/...
In this video I will be conducting a couple tests with a transformer in order to not only explain how it works, but also how to design one by yourself. We will be talking about mains voltage transformer and SMPS transformers and we will find out (for example) how the size and frequency of the voltage alters the design of the transformer. At the end I will then answer the question whether it is easy to create a transformer on your own. Let's get started!
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Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod
(incompetech.com) 
Наука
Great Scott : experiments in this video show dangerous mains voltage...
ElectroBOOM : so here I have a microwave oven transformer
And then comes KREOSAN...
Awww, he didn't pop it! Lololol
@@-Tris- They will rock up with a pole pig :)
What about styropyro
And then styropyro blows up whole compartment:
Meh! Not enough power
Short answer: no
Long answer: it depends *kurzgesagt bird breaks through the window*
Haha :-)
@@greatscottlab so cool.
Can't create of own but can modify ready-made transformers
I personally like transformers of UPS, as they can convert high power
I use these videos, to understand stuff taught in my high school where there is no demonstrations to motivate children to learn practically. I highly appreciate these videos...😍😍😍😍😍😍❤️❤️❤️❤️❤️
I would like to see this guy collab with electroboom
Me too :-)
@@greatscottlab That's what i've suggesting for the past year! Remember me??
@@greatscottlab Creating very complex circuits. So complex that even he struggles to do them and then ElectroBoom destroying them singlehandedly. Gonna laugh all day.
Can you imagine that? Haha.. Safety Vs No Fucks given..
The masters in failure guy? (This is a joke, don't bully me.)
Ah, I spent hours trying to make transformers and having no one to explain it so well that it looks simple and logical. I wish you would’ve make this video 30yrs ago :)
I just learned more about transformers in 11 minutes than I have in 50+ years. I didn’t understand all of it but it has given me a foundation to build on. Thanks!
The conundrum of hysteresis, magnetic flux, resistance, and heat for the sake of electricity! Very well done video. Thank you. I love this subject.
This really could have saved my grade in Energy Conversion last semester
Super cool! I was just thinking that the layering "flaw" that happens when you 3d print something might just be an advantage when making a transformer core! Can't wait for part 2
Excellent video! Kudos on the clear language to explain the workings of a transformer and the sometimes pecular behavior and power consumption you get from them.
3D printed xfmrs! Really looking forward to that video,
I love your content. You always explain everything perfectly and with proper maths. I have learned more from your vids than I did in college lmfao. Ty for your time and knowledge my friend.
Yay I was waiting for this great scott! Nobody likes to mess with custom transformers. High five and thumbs up!
I specially love that last line"Stay Creative"
Waited for a long time for this video 😍
Nice video thank you keep making useful video information about electronics
My first transformer was a rewound MOT for a 100W 808nm laser. Added linear current control with an output of 110A @ 2.5v. Was a fun project 🍺
What was the secondary coil AWG? For 100+ amps?
@@manuelplascencia3223 can't recall, as it wasn't standard wire.. I picked up 3 or 3.5mm bus grade copper from my local metal shop and sealed it. Its only a few turns but was a PITA to wrap.
I've seen guys get a few hundred amps out of 8-10ga branded automotive cable for spot welding..
I did a 250w, 12v output Transformer with 8 AWG cable, hope it works, still i need rectifier bridge and caps to run it
Perfect video to watch just before going to sleep 👍🏻
Now we are making transformer, awesome Scott
Aah.. Tesla in the heaven would be very proud..
I know now I can burn down my house lol
GREAT channel and awesome content as always
All Hail the great and powerful Sir Scott! Without you I would not have a job.
Scott finally came with a video that most RUclipsrs dont prefer to make ....Thanks scott
Once again a great video(Y) I love your videos, learn a lot from them XD Thankyou for sharing
I was waiting for this video
Thank You Very much scott
YES ! .....This ‘ADVENTURE’ is the BIG ONE I have been waiting so long for !
I can not wait to see his efforts and final product/work ! 🧐🇬🇧🤔👍🏻❤️🤝🤓🤓🤓😍😍😍
This video was very dense with information. good. I will save it for future projects.
Fantastic presentation, thanks from Colorado USA.
What a great explanation! Thank U Scott!
I haven't studied electronics yet but I did understand what you said. Your a great teacher
Looking forward to the next video, heck yea
You are super awesome.
I always wait for your next video.
Keep up man...
another great video from "great scott"
I enjoyed your presentation, thank you.
Love your accent, thank you for the great lecture 🫶🏽
Well you pretty much summed up the bulk of my mechatronics course I took for my ME degree
You are one one of the best electronics youtuber
I have always enjoyed your videos and this one is no different. I can hardly wait for the next one. Keep up the great work. Are you into ham radio at all?
Wait,does this mean I won't have to travel to Cybertron to get a transformer?
With the word Transformer capitalized I assumed that Optimus Prime was somehow involved.
Lol but unfortunately no :(
Ah, glad to find this video.
3:52 : Smoothly introducing one of Maxwell's Equations without scaring anyone...
Wow amazing upload thanks :)
Well that was great Scott 😁👍☮
Great video, I wish you did it a couple years ago! I can't wait for more!!
JLC PCB has sponsored a huge amount of videos uploaded by you I seeee,
Great video 😃
Great video as always...... Waiting for long time for this type of video related to transformers and there calculation...... well want to see a video related to core saturation and how measure saturation point of an unknown core...... Well finally very informative video just of seconds but knowledge of hours.❤️
A (almost) 3D printed transformer ? Very interesting ! About 15 years ago I was going to build a transformer, but the materials required (metal sheets and wire) are impossible to buy in my country if you are not a business (they only care about big money), so, I abandoned the project. Thanks for sharing !
you are just what I needed..I'm going to learn a lot from you
Great Video Bro! Thank you!
Ah just as I was building a SMPS awesome timing and video
Well done sir. Thankyou. Have a great life!
Thank you for the video =)
Nicely done
Yet another great video! Thank you sir!
You're welcome :-)
Use ful video 😊
this is way of engineering, i enjoyed thank you ❤
. You are a great teacher.
You have penmanship qualities better than most people I know. That with English not being your primary language(assumed) AND you're left handed. (That last bit being most impressive)
Useful video 👍 I like it
thank you so much for this video it really helped me
keep up the great work
Thanks :-)
I just remember my first power pack which was variable 1.5V, 3V, 4.5V, 6V, 7.5V, 9V, 12V with 300mA which i used to power almost every thing in my childhood! Finally it got very hot and magic smoke came out!
I used to make my own transformers baxk about 20 years ago, they worked well. Mine were designed for 25khz and up tho for switching power suppliy use. Calculated about 88% efficiency average on my diy transformers. Used to take the core out of commercial ones and rewind it for what i needed
Awesome Video :D
you are my go to for learning electronics
Awesome :-)
I was about to wind a transformer and your video shows up. Thanks for your precise timing i will buy a pre wound one instead of diying it
Awesome..... I am waiting for next video.......
Well done! Thanks
Thanks for yourbexplanation i made my own small transformer,(step up).and it works well,thanks.
One semester of Electromagnetic Machine Theory didn't explain the subject as well as you did. I had to reteach myself almost every electrical engineering class when I studied to take my PE exam. Students would do well to watch your videos.
Thank you very much :-)
In Argentina we learn to calculate and build your own transformer at the age of 15. It's part of a car battery charger completely made at state school. Mine has 13 year now and still working perfectly.
Tip: coils are first winded up in a cardboard structure and then you insert the metal core.
2:05
Nice drawing. So perfect.
But...HOW? I bet that this is not the first draw. Multiple attempts
Thanks for the video
Just discovered your content 🙌🔥🔥🔥🔥🔥🔥🔥
Great introduktion..... ;-)
Thanks for sharing :-)
Haha, I like it :-)
Great Video! One correction though:
When you increase the load, the efficiency drops mostly because of the resistive losses (copper losses) in the windings.
The more current you draw, the greater the voltage drop, and the less voltage the primary inductance "sees", therefore
decreasing the flux density and reducing the saturation, not increasing it.
5:45 it "uses" reactive power, which goes back to the mains. Actual dissipated power will be very very low when the secondary isnt hooked up
most awaited video#😍Great_Scott
nice sharing sir thanks for this video
😃😂 Lollll. I started laughing when you illustrated the winding of the transformer directly on the core. Genius, use a bobbin, even one built from paper will be helpful.
aka, make/use a coil-winder.
really complex formulas that took some people years to figure out, all brought into one video. and broken down so my dumb ass can actually understand it... thanks this is exactly what i needed. I have a transformer calculation app on my computer but it is really hard to use and doesn't explain the formulas....this was so good..and they thought i was never gonna need algebra again..lol
Really interesting!!! 😃
Thanks!!!
Glad you liked it :-)
Gutes Video👍🏼
Great job😀👍
I love mains not switching transformers because they can do a lot of crazy stuff and their 50hz buzz is really calming
It depends, do you think that tedium is hard?
In all seriousness, I gave this a like, but there's a couple of things that people should be aware of.
Your current draw on onside effects the current draw on the other side of the transformer, and it's oppositely proportional to the voltage change.
Using the example mains transformer: if you draw 1 amp on the primary side, you're secondary side might have as much as 17 amps pushed through it.
This is why the MOT spot welder took off a couple years ago on RUclips; One high voltage path with an intermediate current draw can become a low voltage path with very high current, and thus heat, output.
Also.. this is hints at some general best practice stuff: put lots of current limiting devices on a transformers primary, and voltage regulator stuff on the secondary side.
Second, The UK limits the number of wire wraps you can get on a single transformer, and that can be good, because it's meant to limit parasitic capacitance.
Without getting into a super long explanation, test your transformer for inductive spiking.
A transformer isn't a motor, but it's still a large inductor. It has an inductive spike associated with rapid changes in voltage, and depending on current draw at the moment of power cut off, that can cause a significant voltage spikes on either side of the transformer. So types of transformers are prone to issues with inductive spiking.
I’ve been failing to make a Tesla coil for so long
I was going to suggest that you use iron filament from Proto-Pasta, to 3D print an iron core. But right at the end you said that you're going to do that. Looking forward to seeing that video!
Great topic!
Thanks For Covering Transformers. I always wanted to make one, particularly high-frequency-audio-split-center-tap (on 2ndry side) transformer with 1:2 ratio. Hope to cover more advance about transformers in future.! #StayCreative
Thanks for the feedback. I will put it on my to do list.
audio transformers are especially tricky
Nice work keep going
Timeless explanation :)
Nice one. A difficult subject explained well.
Thank you very much :-)
I have done this before, Its very possible. But Like Great Scott Said, You basically have to Gut a Transformer and Rewind it to meet your specifications.
Awesome!
Great video! Can you please show what happens when you put a capacitor across an inductor that exactly cancels out its reactance? For example the 1600 ohms reactance you calculated for your primary is +J, what would happen if you used a 1600 ohms -J reactance capacitor for that frequency? Does the output voltage continue to grow on each cycle until it arcs?
I always wondered about this. I once tried to build a transformer out of a nail and some enamel coated wired. Except the wire was only 0.2mm diameter and the lowest voltage transformer I had was 16v. I apparently forgot that joule heating was a thing and the enamel coating melted and the primary winding shorted. Guess I could try again with a resistor to limit the current. They have really bad hysteresis, but for some reason I love the idea of making a transformer or inductor out of a nail.
I even tried making an RC oscillator with a nail and enamel wire for the inductor and a capacitor I made by sandwiching a piece of plastic wrap between 2 sheets of aluminium foil and folding it up to take up less space. But unfortunately the capacitor was too leaky to be any use. But I was able to measure a capacitance of around 500nf. Rimstar is a good channel to browse for stuff on making your own capacitors.
You wont want to use a nail because you need to complete the magnetic circuit so none of the flux is wasted to space. A toroid wpuld have worked better at least
Cool video man 😉😉
I've seen russian guys on RUclips make a transformer core out of tin cans, it worked. The teaser you applied with winding a transformer-It's far easier if you build a bobbin out of thick solid cardboard, fiber glass or 3D print it, and as far as I know it is necessary for the windings to be winded tightly next to each other. Also you can easily calculate the number of windings by rhe cross sectional area and a few more sizes.
link
@@leondeco4835 m.ruclips.net/video/etPT5Rs-JfQ/видео.htmlm25s
I've seen a few more but I can't find them.
More than meets the eye.
Hi GreatScott, overall a very nice video, good to see this kind of education content! I would like to offer some small technical corrections if you’re amenable. At 5:00, you say that the EMF induced in the primary which opposes the applied voltage is the reason the primary current didn’t agree with your complex impedance based calculation. This EMF _is_ self induction, and is exactly what your meter measured, and if the measurement were taken under the appropriate conditions, the complex impedance formula would give you exactly the mains current. The reason you didn’t get agreement is that electrical steel is a highly nonlinear magnetic material: your meter’s excitation current simply wasn’t high enough to replicate the (nonlinear) inductance that the mains voltage sees at higher excitation. You could point at the chart at 6:30 (or a similar chart) to show this: the line approximating the slope of the 0.3 T B-H loop is less steep than the one approximating the slope of the 1.2 T B-H loop. Or, a current probe/oscilloscope measurement of the magnetizing (no load) current would show the extreme nonlinearity of the typical mains frequency transformer. Also, at 7:52, you say that increased load current can push the transformer closer to saturation. This is a very common misconception. In fact, at higher loads, a transformer is operating farther from magnetic saturation. The reason is that the secondary current’s flux opposes the primary current’s flux, as you said. This ends up lowering the total core flux. You can work it out from the lumped element model by seeing that the load current reduces the total AC voltage across the mutual inductance part of the winding system, and causes larger voltages across the resistive (and leakage inductance) parts of the primary winding impedance. So the dPhi/dt integral of the mutual flux (which is equal to the mutual voltage) must be smaller, and peak mutual flux is actually lower. At 8:29, the formula you show is the formula for induced voltage in terms of _net magnetizing current_ (the flux that links both windings), not primary current. Magnetizing current is the difference between primary and secondary amp turns (at least ignoring leakage inductance, which is usually fair for mains frequency transformers). So that “I” should really be labeled “Im” or “Ip - Is”. Referring to the T model at 5:44, you can see how (in the lumped element model at least) the Lm element sees less voltage as the load current is increased, and so the flux linking Lm is reduced. The model is just a model of course, but the real behavior is captured correctly in this case. Edit: also, worth mentioning that the reason high power transformers use larger cores is really just so that the primary (and secondary) windings can be made with fewer turns of thicker wire, reducing the ohmic resistance and therefore reducing conduction losses, while still avoiding saturation at no load conditions. It's also worth noting that the volt-second product seen by a mains frequency transformer winding is a super fundamental parameter that drives core flux excursion as a function of winding count, and that practically we always use this method of calculating the core flux, and never use the induction formula, because the induction formula depends on the nonlinear resistance while the volt-second product applied to the winding is directly proportional to the change in flux linkage, and so tells you exactly how many turns and square centimeters you need to hit a particular operating flux.
Beautiful explanations.... I had exact doubts on the points you have elaborated... Thank you very much..
This video is so awesome.
At my work we built a couple of Three-Phase transformers that were designed to transform 110VAC to 50VAC at 125Hz. We were struggling with saturation and we had to adjust the design of our system, thus increasing the operating frequency from 125Hz to 250Hz (not such a big deal since we were going to use a three-phase rectifier for those phase-phase voltages)
This video was very educative.
Can you please make a video explaining Generators or Alternators? That would be so awesome
Very nice