Transformers are Awesome! | Doc Physics

[@KabooM1067]

That outro... omg XD. I wish a lot more teachers were this fun, it would be harder to NOT pay attention to them.

[@garthmartinsen9612]

Uh... but power is also equal to V*V/R. (Ohm’s Law). There is a good reason for having high voltage for long distance power distribution but I am not sure you have pointed out the correct reason. I did however, really enjoy your presentation.

[@aravindansundaram4010]

But you only use V2/R when there is uniform voltage throughout... I reckon the voltage between two transmitters are the same but the voltage between the power source and first transmitter is less than the voltage between power source and second transmitter.. So you use V2/R when voltage is same throughout as in a parallel connection in domestic circuits..

[@lordfarqward8227]

You're one of the few youtubers that don't make me fall asleep. Thank you! I learnt a lot:)

[@DrifterD]

You taught me about transformers so much better in less than 20 minutes than my lecturer who took 2 hours to teach this, without me understanding anything. *Thank youuuu*

[@8Steady]

I've watched many transformer vids, but this is the first one I found that answers that question... "who's buying?". Thank you (8 years later).

[@MikelHensley]

I'm taking courses in electronics and sought out some KZbin videos to break the monotony of reading. I greatly appreciate how you explain how Faraday's Law works with the transformers ... that was in my text but trying to read it just makes my head hurt. Your way of explaining helps a lot. Thanks!

[@MachinistDom]

Normally I fall asleep listening to recorded lectures from my University. I think they should get Doc Schuster to do all of their lecture recordings.

[@ECOMMUSK]

i am a senior electrical engineer with 11 units (3 classes) left to complete and this has been more educational than anything any professor has ever taught me

[@toddmolloy311]

Because we're taught to maintain the system we currently have not improve upon it..

[@souhardyahalder3903]

even though i am thousands miles away,my high school days were beautified by this person.

[@ntonyproduction]

Even though english is only my second language, I was able to understand clearly what you said in this video and it really helped me out. Thank you for these informations!

[@Ketchup__now]

Seriously, of all the videos that I've watched from you, this one was the funniest. Thanks always!!

[@DocSchuster]

Excellent question, dude! It's critical to note that when you use that equation for power lost in the line, V is the voltage DROP across the line. This is VERY often misunderstood. When you talk about a high-V line, you are referring to large V between the line and ground, but saying nothing about the voltage between one end and the other (hopefully the latter is small). You find V across the line by V = IR, so it is more direct to use P = I*I/R to find power loss on the line.

[@aliciaflores5052]

Wow, a lot of enthusiasm, it made learning about transformers more fun and interesting. It was a little bit fast paced for me, but overall it was a great video!

[@ernestwerbel6235]

Thank you for explaining this difficult subject making it easier to understand. Still learning!

[@sonilzaki]

The way you ended it was totally AWESOME!!

[@أحمدالنقيب-ت3و]

I like the way you explain it , it shows how much you are fascinated by those lovely transformers

[@logchain70]

IVE NEVER BEEN SO JACKED UP FROM WATCHING A KZbin VIDEO ABOUT ELECTRICAL CRAP, THIS GUY SHOULD BE A PEP TALKER FOR MMA FIGHTERS WOOOOOOOOOOOOO

[@munumaconrat5886]

Thanks👨🏾‍⚖️ Mr Doc Schuster, I'm learning a lot from your KZbin Channel than I do in the classroom🙏🏾.

[@thosehumans9329]

You explain things in a way that excites and makes me want to pay attention. Thank you

[@themandude20]

I love your electricity math and circuit videos, they are the best on the net. One thing to point out is, the power to feed homes in north america is 240v not 120v as most people think. It's a 3 wire system giving the option of 240v and 120v service to homes.

[@DocSchuster]

That's a super idea! I'm not sure where it would fit, but I do have so much more to say about electrical distribution. Thanks for the note, and thanks for watching.

[@ingenfestbrems]

Dude you’re taking this to personal 😁

[@ayushimahajan6931]

The most fun class ever! I could never get these transformer thingies and here I am.. almost in love with them

[@BrassicGamer]

Dude that was freakin' awesome. I was like "I did not come here for this!!!" but in a "I came for a bike and left with a Porsche" kinda way.

[@RoyalAnarchist]

You're pretty entertaining my dude. I appreciate these videos; they really help me review the concepts.

[@stolendata]

I love how all the maths, theory etc. lead up to simple yet very stern and decisive declaration that the power grid was never meant to heat up the countryside.

[@DocSchuster]

Sometimes I think about how tremendously that would change our lives. Imagine!!!

[@keithengineer4876]

Watching this video at my desk at Ameren. Didn't realize you were local. Wonderful videos. Its my last day here so you can tell my boss. I don't care.

[@DocSchuster]

+Keith Engineer HA!

[@sonnykay3594]

Doc, one thing i have to say....... YOU ARE AWESOME ,,,,,Thank you again.

[@salonisingla1665]

Thank you so much for clearing up the big voltag-small current mess doc!!

[@wilmeriscool]

Thank you for your lessons here in the navy we're studying circuits and these videos are way more helpful than the classes.

[@DocSchuster]

I am honored to be able to help the good people who are risking their lives for my safety and security. THANK YOU!

[@DocSchuster]

YES! The iron in the core is laminated sheets to prevent eddy currents, which would significantly heat the iron and lower transformer efficiency. You can also make cores out of nonconductive iron-ceramic suspensions for the same reason.

[@davidstone2405]

You are the best. We need more people like you. Thank you so much.

[@anthonyvolkman2338]

Your mother and father live in a small house with one door and no windows. I love it!

[@xAGirlWithNoName]

I wish my teacher was like you, I had so much fun watching this video... thank you so much!

[@benwilson224]

Omg 2:55 the transformer was so heavy he went autotune

[@arch_engineer8773]

Residential voltage is usually 120/240V. 120V line to neutral and 240V line to line, but I digress, you did an excellent job of explaining, and you kept it interesting.

[@dannydsc7]

Really appreciate the enthusiasm. You're awesome.

[@JohnSmith-cy8hq]

08:02 I coughed up my chocolate milk.

[@ajcrowe]

Hey David! This came up on auto play after watching another video about transformers in a class I'm taking. And I said: "Hey I went to grade school with that guy!" Awesome indeed!

[@DocSchuster]

Ha! Autoplay is the refuge of the scoundrel youtube creator, you see. Although, any class with transformers in it is a great class.

[@DocSchuster]

Boy, I'm sure not an expert here, but I'll shoot from the hip. Maintaining safety raises costs while lower current lowers costs. You've also got to have step-up and step-down transformers at each end. So there's a sweet spot that depends on length of run and power needed. Hiring an engineer to find that sweet spot is probably a good idea. Maybe someone who knows more firsthand about power distribution will comment...

[@LinusN1887]

You're awesome bro. Btw, you should watch your videos in 1.5 speed. I feel like I'm in a vortex of knowledge when I do.

[@DocSchuster]

Linus Nandati Thanks! That's really a fun idea, too. A vortex of knowledge!

[@sienchok]

Way to go! The 18 minutes was over so much sooner than I expected.

[@hakimnoori627]

i come from Afghanistan. thank you very much. I undrestod more than i did in the class.

[@ldiazmdiaz]

One thing we also had to take into account was the transformer winding gauges (AWG) and resistance of each windings. We design these power supply (AC/DC) with an engineer and I was the Lab Technician.

[@ghacrux]

I m turkish highschool student we learned about transformers in school but i have never seen transformer before ... that was fun and you are the funniest teacher EVER 😂 All i learn in school is N1/N2=V1/V2☹️

[@the1nonlyani]

ya, thank u, iddint look that far ahead - watched a bit of ur video on the night before the exam. it helped thank u

[@jesussaquin6266]

Beautifully explained

[@DocSchuster]

A nice sound bite, but it masks some important physics: Sure, current is what harms tissue, but a higher voltage power line (which is not current-limited) will ALWAYS cause a higher current through your fleshy body (that has a fixed resistance) 'cuz V = IR. You need to be WAY more careful around high-voltage lines than low-V lines. It's the current through YOU that matters, and that's determined by YOUR resistance and the voltage across you (from the line to ground, typically). DANGER!

[@DocSchuster]

Not quite. Reread the previous post carefully, then continue: The current THROUGH the high-V line will be less than a low-V line that transfers the same power (because power transferred is IV). YOU DON'T CARE ABOUT THE CURRENT THROUGH THE LINE WHEN DECIDING WHETHER TO DIE OR NOT. The current through you is determined by I = V/R, where V is voltage between line and you (assuming you grabbed the dang wire) and R is YOUR resistance. However, Van De Graaffs are another story...

[@DocSchuster]

I agree with you that cost and safety are factors, but you're confused about the voltage/current danger. Sure, current is what harms tissue, but a higher voltage power line (which is not current-limited) will ALWAYS cause a higher current through your fleshy body (that has a fixed resistance). You need to be WAY more careful around high-voltage lines than low-V lines. Again, that is exactly why they must be higher up and better protected from accidental bumping.

[@mrorganic13]

Me sitting on my front porch at 5 am to the brisk morning breeze answering the last question. “YES!” Boy was I disappointed .

[@jamiehardie3609]

man I find u fun it I had teachers like u wen I was at school I may have be top of the class

[@saanikagupta1508]

Thank you Doc Schuster so much!!! Your way of teaching is really good!! It helped me a lot. pls make a video for rectifier, transistor and amplifier. :)

[@aefieefnvhas]

Absolutely love your videos, Doc! Legit your number 1 fan sitting right here.

[@hydorah]

Would be good if you could explain more about what delta phi is and how it is calculated and such like. Would be useful for someone like me who knows nothing about the mathematical side of understanding transformers!

[@Bluecolorfilm]

Beautiful, thanks!

[@theengineeringhobbyist7109]

Your enthusiasm is awesome! Some critical feedback is that you don't go through an explanation of where the initial equations come from just some algebra on equations you just randomly pulled out of seemingly nowhere.

[@nimeshkrishnani]

doc (Y) you the man who treats the hear'er as a friend,the reason i watched and learnt,i did learn about transformers

[@DocSchuster]

Thank you! I'm glad the video was useful.

[@nimeshkrishnani]

it really was useful,you can say i managed to crack my exam the next day,due to the video XD

[@DocSchuster]

Ka-POW!

[@nimeshkrishnani]

ka POW XD thank ya so much monsieur i shall do the knowledge sharing too if i am ever that good

[@DocSchuster]

I'm sure you'll have something to share. Do it when the time is right.

[@leoclarkin5944]

Great refresher explanation, thx

[@THE______TRUTH]

Man that was a awesome explanation your ability to keep my attention is unbelievable. Thumbs up!

[@jbintali9490]

Great video! Very well explained. Thank you.

[@ididnothingmonkey]

Thank you! Very informative video!

[@yincronje9483]

This is amazing and so helpful, thank you! Im learning for my final matric exam and this has been really useful

[@chadgutierrez_music]

Thanks for making it simpler! Also, I love the distribution line drawings hahaha

[@thg_2728]

This video is amazing, I think I'm gonna watch more of these coz it answers basic questions and puts it into context. AND you make it very interesting lol

[@AxzenStarcraft]

Wow, this is amazingly helpful. Serious props, thank you so much.

[@mukeshpandya4171]

Wait, i just took the bait and the video ended with " No!" meh! Lovely video, Kids are so lucky to enjoy such educational videos FREE of cost. Felt I used 18 minutes of my time on youtube watching something worthwhile of what i learnt in my past life... enjoyed it!

[@brianjlayman]

Best voltage mic 🎤 drop I’ve ever seen .

[@apathy11303]

Transformers arent awesome!!! You are awesome because you have taught me what my professor couldn't. Thanks so much!!!!

[@NNN-kkky]

I see the iron ring on your hand. Can't wait to get mine. though you should wear in your pinky finger

[@harmeetbindra6978]

This video was so helpful. Thank you

[@madrid1036]

waw! a very profficianal way of educating. thank you sir

[@silver44fang]

This was very fun to watch.

[@lullabysanton2241]

big up! simple and clear!

[@DocSchuster]

It certainly couldn't. When did I say that? Seems like I'll have to edit a bit.

[@watubelukinat]

some adapters use switching circuits - so the time ! power is gated ? ( whether a ups / uninterrupted power supply , or laptop charger ) sets the final output voltages .

[@MatheusSilva-dragon]

Wow! Interesting! Thanks, doc!

[@abdullahibrahim1767]

very good, it is a superb performance.. thanks

[@DocSchuster]

Oh, I understand your confusion. If I just hook up a battery to the primary coil of a transformer, that coil will experience a change in flux, right? The only problem is that the flux will approach a constant (saturated) value based on the steady-state current from the battery. That's why I mentioned a battery.

[@DocSchuster]

Think about which way the plates are oriented - that may help.

[@Daca241]

Damn,u explained it properly,always had trouble understanding that thing,ty man,u are amazing.

[@garyweber6413]

Your awesome man.Please make a video about why you see different core shapes and configurations.

[@TheBlondie81]

Funny and educational! *thumbs up*

[@rolandmousaa3110]

Doc.. like the way you teach electricity.. GREAT! (inventor)

[@DocSchuster]

A Van de Graaff generator actually DOES have a lethal voltage and cause a lethal current to go through you. However, the current only exists for an infinitesimal time. Not enough time, hopefully, for your heart to stop or your tissue to be damaged. Don't try to explain both effects in the same sentence, though. In much of physics, you need to understand what your limiting or controlled factor is. I've been hit by my 500kV Van de Graaff more times than I'd like to admit, but I'm still here.

[@eeitacademy6975]

Nice lecture. I like it

[@power-max]

Old vintage flyback transformers from CRTs are really great real-world examples of the diagram at about 6:25 for demonstrational purposes, I plan to use mine when I get around to teaching electronics merit badge for boy scouts.

[@DocSchuster]

Power Max Excellent. I have pulled many of them - they were just waiting for an application.

[@power-max]

Doc Schuster Same, although I had to buy mine on eBay since we generally have no junk around where we live. I am thinking of using it to either make a small tesla coil (useful for demonstration of voltage @ RF frequencies) or a lifter and other ion-wind propulsion systems.

[@DocSchuster]

I probably won't get them before you need them. What textbook are you using? Communications systems could be as large as a college degree!

[@Kravch96]

I appreciate your feedback, Doc! :) I suppose, just suppose, that both larger capacitance and larger resistance will increase the time of discharge, due to the capacitor discharge formula V=Vo*e^(-t/RC). But I am not sure about the magnetic stuff. Again, Thank you very much for feedback!

[@ltherix225]

Very interesting lesson.

[@Andrei-ds8qv]

Very very nice! thanks!

[@MegaGasek]

Your videos are incredible. You gained one more subscriber. I am trying to learn more about transformers because I am moving to a country where they've got only 220v... All my current (pun?) devices are 110V North American, some are bivolt. Kitchen appliances are 110V and I am taking them with me. I took a look at transformers online. I don't trust any of them. I did my research and the one I found of a maybe, possibly, acceptable quality is the Kriegers... I have learned that heavy in weight, power supplies make for better, quality products. Somebody stated that the Kriegers are heavy... Anyway, my question is: If I have a device that is 300 watts, I am going to double or triple that amount in my transformer... I will get a transformer rated for 900 watts for example (not planning on powering hair dryers, microwave oven, etc). I know they are rated at that but don't really output that much because of heat, etc... HERE IS THE QUESTION (finally) Due to the transformer being a ''simple'' device, will the components, ie cheap brand, expensive brand make a real difference?

[@ratchetbandits8218]

you were doing so well ohm's laws states the inverse relationship of IRE based on that you can supply a house with lots of current. Using a step down transformer to a respectable 120v and lots of ampers thus running all your appliances on a parallel circuit aka circuit breaker ohm's law also states parallel circuits volts stay the same so your current is divided that's why each breaker has a different values and your kitchen has more current than your bathroom

[@roari5740]

Funny and useful... Great vids man

[@mrmusicalinstrument]

If you work out, you win. If you pou, you pin. I can finally remember these formulas.

[@adbeellopez4792]

This was awesome! Thank you

[@abdelrahmanwagih873]

Thanks that really helped alot ! Although why do we always use voltages to express the ammount of current we are transferring ? Why do we always say 120 volts instead of saying their equivalent in Ampere as current intensity .. is there a reason for that ?

[@emmang7593]

literally saved my alevel phys exam which is coming up next monday lol... also surprised that you rly drew 40 turns on the secondary coil :)

[@cherryxx6070]

You go Doc! HAHAHAAH best lesson ever! I wish you were my teacher at school ^_^

[@delhoncho8811]

Excellent lesson and also statement to the money grabbing energy companies charging exorbitant amounts for what could be almost free energy.

[@jimhinkle7245]

LOL!!! Subscribed. Well done my friend, well done.

[@DocSchuster]

Jim Hinkle Happy to have you!