How Does Wireless Charging Work? || Crude Wireless Energy Transfer Circuit
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- เผยแพร่เมื่อ 19 พ.ย. 2016
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In this video I will show you the operational behaviour of a transformer and how we can alter it in theory and praxis in order to create a crude wireless energy transfer system. Along the way I will also talk about the QI standard and some of the disadvantages of wireless charging.
Music:
2011 Lookalike by Bartlebeats - วิทยาศาสตร์และเทคโนโลยี
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I always feel if I watch enough of your videos I'll become an electrical engineer! Great video as usual, keep it up man :)
first reply 👋🏻
How is it possible that @GreatScott, despite English being his second language, can more clearly and concisely explain electronics than any teacher I had in college?
let's make a voting system for the teacher to encourage them...
if they don't explain it properly the get a lower salary or anything other
Part of the problem with a voting system like that is that students (and I am one!) don't always know what's best for them. For example, the end-of-course questionnaire that reviews the lecturer has a strong negative correlation with the difficulty of the course.
More highly reviewed lecturers also tend to produce higher performance in the lectured module, but lower performance in subsequent models (this is from training data gathered by the US airforce, which has a small and tightly-controlled set of courses with randomly assigned lecturers).
I don't want to take anything away from GreatScott who is clearly an excellent presenter with lots of background knowledge. Just want to point out that there are very good reasons why lecturing is not a popularity contest.
Luke Wren but the school is mostly just a place where you sit, learn, go home and forget the stuff you have learned (for me)
Then you should make better use of your time there! If you think that the course content is beneath you, it's YOUR job to seek out the things that interest you and find out more about them.
I'll let you in on a secret: teachers are also not a fan of their curriculums. They are however generally fairly knowledgeable people, and usually VERY happy to help if you show initiative in going beyond the curriculum into greener, more interesting pastures.
I'm not in a position to lecture you -- my school attendance was the lowest in my year. However, I have good memories of time spent talking to teachers before and after class, and generally learned more in that time than the rest of the lesson. There are lots of great opportunities for learning in school, just not always in the obvious places.
Luke Wren i am interested in most of the subjects (digital art and so on, like photography, filming ...) but i "hate" th subjects like math...its not like i hate school, but they create their lessons sometimes so boring and useless...
That's by far the best DIY wireless power transmission in TH-cam. Explains the theory in an understandable and focused fashion, and goes through the steps towards the system tuning. Great job!
What I love is that he takes the time to explain it for us little people. He takes simple ideas and using simple vocabulary explains it for us regular people.
I honestly love watching your vids because of how well you write.... the lessons are a bonus :D
this is one of the few videos from you that I completely understood/reviewed. they drilled this concept in our heads in school.
thanks for making this video.
Thank you ! My knowledge about transformers always lacked a bit. Probably the video I enjoyed the most from you even though they are all top notch ! Cheers.
Wow. I'm having flashbacks of lessons from my first and second year in university. You're a great teacher!
Great information! I don't own a wireless charger, and I always assumed that the base contained an iron core, similar to a metal detector using ferrous metals in passing vehicles as a core for presence detection in some traffic lights. I never considered using a tuned LC circuit! That is brilliant. I always enjoy your videos, and this one was even better than usual!
Your penwork is satisfying to watch, both for the pen and your way of using it. Thanks for the explanation too.
The best part of these videos is, not only are we shown how these devices work but the why! 👍👍👍
you drawings are always top notch! Really satisfying to watch for some reason :)
This video is amazing! I'm build a wireless lipo charger from a ZVS Flyback for my Electromagnetism and Undulatory class and your explanation is really good. I'm really looking foward to the Part 2 Video.
"You can always create your transmiter and receiver circuit from scratch" Looking forward for that!! Great videos!!
I am an Electrical Engineer and still amazed by your videos, keep it up
Hi GreatScott,
This video particularly I've seen 5 times as my reference to my wireless charger project. Thank you..
By the way, about the inefficiency of Qi charger you calculated in this video, please note that you put the mWh meter before the PCB transmitter which contains electronic. in my opinion, mWh meter should be placed after the pcb and before the coil. Let me know if I'm wrong.
well thank you again for this video!!!
Simply excellent. very practical electronic education.Nothing else can be better than this.well done.
Man, your awesome, i never understood the principal of transformer until I see this video ,thanks and keep going :)
Great video, as always! I had a couple questions:
When you calculate the resonant frequency for the 1st capacitor, you use the inductance you measured across the primary (I believe) with your inductance meter. Shouldn't it be about half that, since the meter would have seen the primary leakage inductance along with the cross inductance? Also, why do you put the second capacitor across the secondary instead of in series with it, like you do on the primary?
Thank you for putting so much detail into your videos, while keeping them moving fast. I really enjoy them.
Just found ur chann. Keep it up. Have no idea what you’re jibbering but u sound confident and I trust u and look forward to showing this vid to my children.
Greatscott, i wished you did this video long time a go, it could help me beginning with magnetique field, i would like to say that in 2011 i did charge my note 2 by using a magnetique field anw i wish you will never stop your videos bcz they are amazing.
the way you explain makes me love electronics :)
Thank you so much man I always wondered how it worked! Not long from now in a few years I've read we will be able to charge devices from across a room so we won't even need to take the phone out of our pocket to charge!
Anyone else watch these videos even though they have no clue what anything means?
I do
yes
Pretty much
my brain exploded
Brick Videos jep
Looking forward to the DIY wireless charging video.
Thank you Great Scott ! as usual awesome video.
Great video, waiting for the one about creating transmitter and receiver you mentioned in the end.
ELECTRONTHORP
they looked like stock coils from wireless charging kits
You have saved me hours of experimenting trying to build my own wireless transmitter for my Samsung S7. I wish I had watched this before trying for a hour or so. Now I will try my own transmitter and receiver circuits to see if I can still charge my phone wirelessly. Any suggestions on good existing circuits?
I didn't understand anything this guy said but his drawings and big words kept me here
Really like this video, I hope we see a follow up :) keep up the good job!
+GreatScott! I am eagerly waiting for the video of that another subject. :D
awesone video!! im waiting fot the second part ! :D
Don't know what he's talking about, but his videos are great.
That's very informative...Thanks and keep posting:)
omg your handwriting is perfect, also nice video man
can't wait for the next video on this subject
👍Like wow, more techy than I was expecting. 😁
Great stuff man. Thanks for the vid.
Great explanation, thank you!
this guy is a natural.. everything with explanation
Quite a nice video
keep it up Scott!
Awesome video Great Scott.
Endlich ein verständliches Video. danke
Now I will give this video to my friends who need an explanation of how wireless charging works, thanks a lot !
Also, it's funny I have the same USB meter, very useful to monitor USB powered projects :D
Interesting video. 😉
It may be inefficient, but it could be a nice way to transfer energy to fully sealed equipments and remove any possibility of bad connection during charge due environmental factors or when the connector could compromise the equipment in some way or it is too small to use a connector.
Example:
- fully sealed cameras or sensors that operates under severe conditions or water
- send energy to equipments or sensors inside of animal or human without any invasive procedure (like changing batteries)
- tiny autonomous quadcopter landing pad
I must thank you for this awesome video
I can't wait to see your next video! :)
GreatScott, your hand writing is beautiful and your drawing skills are just as awesome. Thanks for being our teacher. Where did you go to school or are you self taught?
I just found this channel. And maaan, i subbed :)
You are the BEST!!! GREAT SCOTT!!!
Thanks for the video very informative.
I have come to really enjoy this channel
I like the way you say primary and secondary!
I'd love to see what project you come up with that uses wireless charging :)
Man.. you should really become a professor at our college.. You can clearly explain electric machines and other topics much more clearly than the majority of our instructors
This channel is amazing.
thanks man, another nice video.
Thank you for sharing knowledge
Now that I totally understand (🤪) I’m going to watch the movie “Back to the Future “ again and analyze the Delorean flux capacitor.
Thanks , even though a lot was over my head I could grasp the basic concept. Thanks for your videos, you are my go-to site.
thank you for the technology experiment professor =)
What an incredible explanation. Great work. I’m just now designing a wireless charger for camera equipment, it is powered from 12v car lighter boosting to 24volts at 1 amp current draw. Any ideas?
Haha! Kudos on the Channel name mate. Good one :D
good work...distributing knowledge..good
Echt tolle Videos!
a very informative video. i allways assumed some form of wireless resonant inductance was employed to charge a phone. the higher vhf frequencies 135mhz used by a commercial charge unit means the coil length would only have to be around 55cm quarter wave to be resonant, i wonder what the range would be if the coil was resonant to a very low frequency tesla would be proud.
Oh my god that handwriting is BEAUTIFUL.
Now THAT's what I was looking for :D I'm intrested in the subject :]
My project plan is to use my Pc's psu to power up the wireless charging station wich is inside my PC's plastic top plate so I can drop my phone on it and charge it :D I didn't ordered the kit jet, I was planing about it but I see that you've used a different kit. I'll wait a bit ;D
There are kits which uses DC and does the same thing, GS showed a circuit at the end part of the video which does that :D Watch that and you will know what I mean :)
"But you can always create your own transmitter and receiver circuit form scratch!... But that is a subject for an other video"
I meant that...
Nice video, can you make a video on how to turn the AC current from the receiving coil in to DC in an efficient way.
HI! Make a video on the USB Killer and explain how it works. I really want to know how it properly works.
I would be interested by a more general video on the thinking progress to concretise a project, and maybe on easyeda :D
could you make a video of you making a homemade wireless charger from salvaged parts because im kinda bored of having a wire charger other than that keep up the good work u inspired my to not just throw things away but to salvage the good parts thanks
cool video, now I know how it works, at least a bit :) wireless charging so easy and simple, that's why the eff. is not so important for me
your channel is my life
Nice Video! Have a nice day!
Nice Video intresting how it works.
I have no idea what he's talking about, but I still watch.
I can´t wait for next video.
Best channel, for me.
Really nice, so just add a couple of capacitors, use a higher frequency and you get wireless energy transfer.
thanks for making the tutorial sir
could you please make a video on how to build the circuit ourself
Please do more vid's i love them !
This guy can write really well!
awesome video
I am waiting for next video diy wireless charging circuit...
Hey, Great Scott, do you have an idea on how we could create a magnetic field a wide as a meter radius
Transmitting power through the air seems like magic. Magic I really want.
Err... I would like to ask, is it possible to modify the circuit so that distance between the two coils can be further apart but still be able to make the LED light up?
@great Scott how do u clean Ur soldering iron tip? and do u change it frequently?
I wish I knew enough to understand all of this. My goal is to one day not only understand it but contribute to it.
I wish I could understand this stuff, I nearly failed analog electronic last year and thus I don't like it anymore :( I hold utmost respect to people like you who can tinker with it in the way you do
Thanks this gives me hope
get this book via piratebay.
thepiratebay.org/torrent/14360011/The_Art_of_Electronics__3rd_Edition_[2015]_[PDF]
You should make a vid on soldering in electronic basics
Can you make a video explaining every symbol and law of science you used, so I can learn more about electronics and how they work and what rules have to be followed?
only the best from the king of electronics
I have no idea what he means but its interesting enough to watch.
I am interested in the 'design' of the 'coil'. RFID/NFC coils also receive/transmit power.
Any idea about design restrictions? What about the max resistance of the materials that can be used for the coil?
Great Video!
Your a genius!!!!! You know your stuff.
DIY QI receiver is actually very easy. Specification is open and I did it few years ago implementation in micro.
I do not understand the maths… but I watched anyway because it is very interesting and has helped me to understand how my Samsung Galaxy Wireless Charger works… thank you..
Buena investigación amigo.
dude can i see your face. it's much rare to see a smart guy like u in youtube.