How do Electronic Transformers Work? - The Learning Circuit

[@genghisbunny]

You're such a great teacher for these things.

[@castlecodersltd]

Thank you Karen for another great video. I really struggled to understand Electronics until I came across your series of videos. They have really, really helped. I look forward to your practical application of transformers in your next video.

[@macxgeek]

Great video, very informative. Only thing I would add is that for residential step down transformers in the united states, the voltage is stepped down to 240v and then the secondary coil is "short circuited" half way through the coil with the use of a "neutral" wire that allows for two 120v feeds to the residence. This way the secondary coil can be used for a full 240v or separate 120v circuits. Some what unique to the united states

[@theengineer9910]

great video ! transformers are tricky to learn at first. But steady state analysis on them isnt too bad.

[@MasterIvo]

I would love to hear you talk about dual resonant transformers, and their Transverse and Longitudinal resonant modes.

[@reasonablebeing5392]

Another great video Karen - your videos help explain and de-mystify electronics.

[@MAYERMAKES]

who would win? megatron or a magnetron?

[@myownstuff3704]

Very good, I always enjoy watching your videos. Thank you for taking the time and effort to produce free education for the masses. I have a few suggestions. Perhaps there can be a followup video that can demonstrate live circuits, eg: measure input and output voltages, and how to identify the wiring for the primary and secondary coils. Maybe build a little breadboard circuit of some type. Also, maybe you can touch on why one type of transformer is selected over another type during designing a circuit, eg: size, type, power consumption and requeirement. Additionally, you might add what center tapped transformers are and why they are used. Perhaps you can find a suitable transformer to dissect, similar to the wireless toothbrush charger. As always, keep up the good work!

[@yaserhumeid3922]

Informative and straight to the point Thanks 👍😊

[@sebastianthomas8507]

I love learning Circute .........This channel is awesome, i love this tutorials :)

[@naderhumood]

Great, simple, fast, informative, vedio.. gorgeous lady. sending u a suloute from Kingdom of Bahrain 🇧🇭...

[@vicjames2743]

VERY good video. Thank you for making it...

[@ab_ab_c]

How does the thickness of the wire in each windings affect how much current can be used by the load? How does one known when winding a transform what thickness wire to use to ensure it will provide sufficient power to a load without causing the wire lamination to melt & short out the windings & thereby destroy the transformer?

[@TrollingAround]

I'd also add: In the diagrams the coils are always wound in one direction, in practice they are sometimes wound back and forth - does this effect the efficiency?

[@ab_ab_c]

@@TrollingAround It should affect the efficiency because the rotation of the magnetic fields around a wire follow the right-hand-rule which means as AC current flows in one direction the magnetic field flows in a specific direction according to that rule & when it flows in the opposite direction, the rotation is opposite.

[@TrollingAround]

@@ab_ab_c Yes - I agree, however in many tutorials on winding coils people wind left to right to left etc. Especially when winding coils for generators (where permanent magnets are used to induce current). I was wondering if direction of coils vs direction of wire was significant.

[@ab_ab_c]

@@TrollingAround I'm not sure what you mean by "direction of coils vs direction of wire" If you wind a coil from left to right, when you reach the right end of the coil, you can continue to wind in the same direction and start winding back towards the left end of the coil for a second layer of the same coil. When you wind like that, the coil is wound in the same direction whether your wind left or right. In that case each row of winding should produce the same magnetic rotation around the wires & add to the magnitude of the magnetic field when current flows through the coil. Now that wouldn't of course be the case if you reached the end of the first winding & then bent the wire & starting winding the coil in the opposite rotational direction towards the left when winding the 2nd row of wire in the coil. In this case it would seem the magnetic field rotations would interfere/cancel with each other.

[@TrollingAround]

@@ab_ab_c - Thank you, very clearly explained.

[@ogrodoug]

in Brazil (south america) we use both 127V 60hz and 220V 60hz, mostly 127V. 220 only for high power devices like heaters, ac units

[@jafinch78]

Nice detail. Wondering if detailing the two and three phase transformer design is worth an episode in regards to transforming to 1 phase? Seems would be beneficial and more-so because I'm researching now and bummed I'm not finding the toroidal 60Hz larger cores that seemed to be around more a year or so back and if I recall correct made from Mu-Metal that wasn't that expensive. Maybe they were seconds or overrun production leftovers. Maybe even detailing the high magnetic permeability materials also would be an interesting episode with oscilloscope visualization of effects since seems the graphics would be even better graphically representing more signals information? I also think would be beneficial overlaying the potential and the current to better visualize the effects at the same times maybe to get more on the screen to teach the details. Impedance is definitely an episode in itself to simply detail the effect and range of applications. That still intrigues me to this day the differences that can be visualized using an oscilloscope with the range of single transforms. OK, enough blah blah blah. What's neat is yesterday I moved my microwave oven transformer (MOT) collection that lately, I've been wondering about testing performance of each more critically and then matching to make a parallel (if not larger custom stack) step up or down transformer and possibly a three phase to single phase transformer. I've never seen anyone make those online using MOT's. Originally, I started the collection for welder inductors to smooth the current, like the capacitors smooth the potential for the AC rectified DC design mods. Trying to rescue the made in the U.S. ones and get more versatility for utility out of those.

[@james77011]

Do u have a video on Eddy currents?

[@fefafafe5059]

Dear Master Nice Explication FR from Switzerland

[@WI9LL]

Would love to see you do one on autotransformers, baluns, ununs, and current vs voltage transformers.

[@bluewaters4567]

When a continuously changing magnetic field cuts/spreads across a nearby conductor, an EMF is induced in the conductor they say according to Faraday's law of magnetic induction. What does it mean. Does it mean charge separation takes place like a battery, where some free electrons are move to one side of a conductor and thereby that side acquires a higher electric potential(as electrons repel each other naturally) compared to the other side. Or is it simply that the time varying magnetic field simple charges/sets up the electrons on one side of the conductor to a higher energy level compared to the other side and then current flows from the higher potential side to the lower potential side. Which one is it.

[@Derfboy]

Since Optimus Prime is a Transformer AND contains a transformer I do believe he would have the advantage. :)

[@maker_karen1785]

I like your logic.

[@james77011]

What are eddy currents?

[@tyrewald9083]

Remarkable!

[@Jesusjunkie402]

My wonderlic test suggested electronics technician as a profession.

[@Jesusjunkie402]

@Sean Stevenson Lol...I'm a certified Horticulturalist👍🌱

[@grodenbarg]

I have a few of the electrical kind sitting around the room. Transformers are the first thing I salvage from junk electronics and appliances when I get my hands on them, if they still function. Funny that the toys get mentioned in this video as well. More likely the electrical transformer has been around a lot longer than the kids toys have been. IMHO LOL

[@retrogaming1991]

Wow all this knowledge

[@darronb248]

Reminds me of lisa kudrow 😊

[@shahrokhshayan4321]

❤❤❤

[@kulavantbauddh2699]

🙏🙏🙏👍👍👍👍

[@jr7556]

Transformers work by Optimus Prime saying: Autobots, roll out. I'm not sure about the bad guys, though... Probably something similar.

[@richgolfs]

What is an Optimus prime?

[@artstechnology7809]

Iam ingenier electronic. You are my dream girl. 👍👍👍👍👍👍

[@MichaelLass]

I'll be shocked, if one of them wins.

[@6o6p2006]

- как работает трансформатор? - ууууууууууууууу... %)

[@matthewravingskywalker2520]

im link but my real name is matthew raving skywalker if regisor a dell you will get a futchor pc done my way with free dos

[@AjinkyaMahajan]

The title is kind of misleading, it is an electric transformer, not electronics. I thought there is something solid-state kind of which video is all about. 2nd the Transformar also works on Pulsed DC, almost all SMPS and regulators work with pulsed DC using an H Bridge of half-bridge. Cheers ✨✨✨✨

[@richardhead8264]

_Are electrons not involved?_ 🤔

[@AjinkyaMahajan]

@@richardhead8264 Not exactly, although it is interfaced with electronic circuits. But Transformer dont involve electronics

[@reasonablebeing5392]

Think in terms of the search engine - adding "electronic" to "transformer" gets rid of most of the "transformer" cartoons.....

[@lukiepoole9254]

Lol "electrons"

[@spats3471]

The magnetic field lines of the coil are totally fanciful, you should have a physicist look at your work before making such a bad video…