How far can I Wirelessly Transfer Power? (Experiment) Better than at MIT?

Подписаться 2 млн

Просмотров 342 тыс.

0% 0

Altium Designer: altium.com/yt/greatscott!
WARNING!: Do not replicate the experiment showcased in the video!
Previous video: • Finally a good usage f...
How Does Wireless Charging Work? video: • How Does Wireless Char...
DIY Wireless Energy Transfer System video: • DIY Wireless Energy Tr...
Facebook: / greatscottlab
Twitter: / greatscottlab
Support me for more videos: www.patreon.com/GreatScott?ty=h
More project information (schematic, code,.....) on Patreon: / 55620062
Parts list (affiliate links):
Arduino Nano: s.click.aliexpress.com/e/_dUL...
amzn.to/3zACpM1
5V regulator: s.click.aliexpress.com/e/_dXS...
amzn.to/2V3wDDt
Capacitors: s.click.aliexpress.com/e/_d7d...
s.click.aliexpress.com/e/_dU4...
amzn.to/3kBoHC4
amzn.to/3gQj4Pz
Resistors: s.click.aliexpress.com/e/_dTP...
amzn.to/2Y6MEtu
OLED screen: s.click.aliexpress.com/e/_APw28Y
amzn.to/3kKOMPg
Potentiometer: s.click.aliexpress.com/e/_dX8...
amzn.to/3mSJ1BF
MUR460 Diode: s.click.aliexpress.com/e/_ArPcS4
amzn.to/3yzbIpE
IR2184 MOSFET Driver: s.click.aliexpress.com/e/_9HCy28
amzn.to/3kMP7Bf
IRF740 MOSFET: s.click.aliexpress.com/e/_9yefJK
amzn.to/3BxqJdk
Websites which were shown in the video:
news.mit.edu/2007/wireless-0607
archive.eetindia.co.in/www.ee...
www.we-online.com/catalog/dat...
In this video I will be once again having a look at wireless power transmission. But this time it is all about distance and power because I wanted to find out whether I could achieve the same results as MIT back in 2007. They transmitted 60W of power with an efficiency of 40% over 2m. During my experiment I will tell you lots about good coil designs and power electronics which are required to achieve such results. Let's get started!
Thanks to Altium for sponsoring this video.
Music:
2011 Lookalike by Bartlebeats
0:00 MIT's wireless power results
1:49 Intro
2:25 Building the power electronics (half-bridge)
4:18 Coil design (diameter, windings)
5:54 Frequency selection for the coil design
7:14 Test 1 (windings)
8:50 Test 2 (diameter)
9:15 Test 3 (HF litz wire)
9:49 Final Test & Verdict

Наука

Опубликовано:

24 июн 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 855

@mistirion4929 2 года назад

Technically (if it's just about wirelessly transferring power) you could use lasers and achieve greater distances. Although the transferred power would be much lower, the distance would be much greater

@greatscottlab 2 года назад

Correct. But with my electronics background it is more about electromagnetic fields in my case.

@a6dulsalam511 2 года назад

@@greatscottlab and the laser is so direct and it could be blocked easily than electromagnetic waves ⚡

@ShahZahid 2 года назад

@@a6dulsalam511 also with a powerful laser, u have many other factors to consider like fire, blinding hazard but if u want to transmit to particular spot its the way to go and thats y many scientists think that it will be used to power spacecrafts in the future

@imagoomanwithgoo7563 2 года назад

Or a belt pulley system

@a6dulsalam511 2 года назад

@@ShahZahid That's true it's gonna be used to transmission power from the space to earth!

@alkaline3mc Год назад

I am designing a wireless power transfer system right now and I had a lot of questions that your video answered for me. Great work and thank you for doing this!

@VladoT 2 года назад

Let me tell you how they achieved this: They used the same principle used in the Yagi directional antenna which means that they put resonant coils in calculated distances before and after the actively driven coil in order to extend it's transmitting lobe forward. This is of course not shown in the pictures they published 🙂

@ELECTROMAN_MX 2 года назад

how you know that?

@VladoT 2 года назад

@@ELECTROMAN_MX Because the original experiment was created by a team in Croatia which they presented it in more detail before it was continued by the american team.

@great__success 2 года назад

exactly what I thought....high gain antennas were well known even in 60's and I am talking about MHz or even GHz frequencies

@kanesmith8271 2 года назад

@@VladoT Why are they going through the effort to conceal key knowledge like that?

@VladoT 2 года назад

@@kanesmith8271 I guess there will be commercial product soon.

@malamu1417 2 года назад

Alter du hast schon 1,5 Millionen Abonnenten. Herzlichen glückwunsch. Habe mir deine Videos schon reingezogen seitdem du gerade mal ein paar tausend hattest.

@nathanial7249 2 года назад

I absolutely love love love these videos Great Scott! Keep em coming!!!

@user-mt2uh1ow7d 2 года назад

shut up you just think scott is cute lol

@MrBrelindm 2 года назад

Since electromagnetic waves radiate in all directions the power available at any point away from the source will decrease with the square of the distance. This is true for typical point sources of radiation. If however, a collimated beam can be formed then the inverse square rule becomes less of a factor while aligning the beams becomes an increasingly important factor. With a collimated beam it should be possible to wirelessly transmit power over great distances at high efficiency so long as the transmitting and receiving antennas are well aligned. I used to work for Detroit Edison as a contractor in their communications department. One of the things I did in that job was to perform routine maintenance on their several microwave links between their properties. These were microwave T-1 links that were beamed between properties with low power, very high Q parabolic dish antennas.

@conorstewart2214 2 года назад

Its not so much electromagnetic waves that are transmittting power here, it is the shifting electric and magnetic fields. The fields arent particularly easy to direct which is why transformer design is finding the optimal design that minimises losses. Wireless power transfer is pretty much just a transformer without a core at a distance, all things you want to avoid in conventional transformer design. As far as I know its not that easy to change the shape of the field into a beam or change it much at all as the field naturally makes a loop but as someone else in the comments pointed out they most likely used other coils to stretch the field out and therefore give it more range.

@MrBrelindm 2 года назад

@@conorstewart2214 you would be amazed at all of the beam forming techniques there are in designing an antenna or antenna system. And basically any "wireless" transmission is radiated from one antenna to another so in order to maximizing the efficiency of long distance power transmission, applying beam forming technology is highly advised. Having several coils stacked with one driven coil, and at least 1 reflector coil, and a couple of director coils would offer a narrow cone of directed radiation - a beam lobe. Typically the more elements in a beam antenna system, the tighter the beam lobe, higher the antenna gain, and higher the Q. Of course the higher the frequency used, the smaller the antenna design needs to be. Something like I described above would obviously be a high frequency circuit and could be set in a resin pour to maintain the optimal wavelength distance between the different types of coils (beam elements) in the antenna. Another useful area of study in antenna design (I'm a former Navy radar tech) is waveguide theory. The higher the frequency used, the easier it is to produce a collimated beam of radiation.

@conorstewart2214 2 года назад

@@MrBrelindm sorry we might just be thinking differently but it seems at least in part you are talking about antennas and beam forming like the ones used for radio transmissions which is very different from the coils used in wireless power transfer which don't transfer energy through EM waves. Beam forming and long distance transmission through EM waves is totally different and doesn't really apply to wireless power transfer. Radios send out EM waves but wireless power transfer coils don't emit particles or waves like standard antennas do.

@MrBrelindm 2 года назад

@@conorstewart2214 the coils used are identical in the video and are placed some distance apart in open air. Alternating (or pulsing direct current) is applied. It radiates and the other coil is energized. That's electromagnetic propagation between the coils. When you're talking about EM propagation, you are talking about antenna design.

@evensgrey 2 года назад

The simple kind of power transfer used in things like Qi Chargers for phones or for electric toothbrushes use direct magnetic coupling of the transmission and reception coils. Magnetic field strength (once you're at a distance from the generating current loop that is large compared to the loop size) goes as the inverse cube of distance. (Closer than that, magnetic field strength is weird, and becomes dominated by additional terms in the field equations that fall off even faster with distance. If you're at a small enough distance from the generating coil, the field is as close to uniform as you want. Generally speaking, these power transfer systems have the coils much less than their own diameter apart, so the actual fields are really complicated, but transfer power with enough efficiency to be quite useful.)

@MCsCreations 2 года назад

Pretty interesting experiment, dude! Excellent work! 😃 Stay safe and creative there! 🖖😊

@JeffGeerling 2 года назад

<a href="#" class="seekto" data-time="677">11:17</a> - so... next time, then!

@Hex-Mas 2 года назад

so how much was that amd video card you bought?

@ezzeldin101 2 года назад

I like Jeff videos

@JeffGeerling 2 года назад

@@Hex-Mas Got it at MSRP!

@aidan7913 2 года назад

@@JeffGeerling amazing! how did you manage that?

@512mb4 2 года назад

Make a wireless pi to cook a pie then , with a timelapse

@ioannisnikiforidis325 2 года назад

I like your approach to problem solving in your videos, keep up the good work. Some suggestions for future IPT videos: - Try going to MHz switching frequency to maximise link efficiency (13.56 MHz is a good point overall), GaN devices can help you achieve this. - Try driving your transmitter with resonant inverters (Class E or Class EF), since they provide higher efficiency (95%+ is possible) at high frequencies and low THD . - You can get very high Q's (around 1000), by using copper plumbing tube for coils, just make sure to keep the number of turns low to minimise radiation.

@ats89117 2 года назад

It seems like you should be able to improve the efficiency by placing a highly permeable sheet on the outside of the transmitter and receiver coils. Hope you will try this!

@Stoneman06660 2 года назад

Nice! I do love your sense of humour too. Keep up the good work.

@plmbtired 2 года назад

Love the this channel!! I have been watching for quit some and trying to teach myself alot is still an alien language but you always inspire me to learn more so one day I can understand what you were talking about.

@greatscottlab 2 года назад

You can do it!

@dougcox835 2 года назад

Just remember shat when he says something is serious he really means series.

@WarriorRev6300 2 года назад

I watched 3/4th the videos of this channel.

@reyrank2846 2 года назад

always fascinated the way you explain things.

@akaskmsskssk6927 2 года назад

Nice vid, learned a lot, you should do more experimental videos like this

@acestudioscouk-Ace-G0ACE 2 года назад

Thanks for sharing this, I enjoyed the learning experience here.

@ajeethsuryash5123 2 года назад

Its nice, how he writes things down along with narration

@sumanchattopadhyay7405 2 года назад

Love your projects/videos..

@greatscottlab 2 года назад

Thanks :-)

@myturkishlife1777 2 года назад

Another well thought out video 👍

@RiffHarvester 2 года назад

Another Great (Scott) video!! I'm intrigued by wireless charging/transmission. Also, I really like your handwriting. I'm sure you've heard that before.

@maertsnosmirc 2 года назад

Fantastic as always!

@chinmaymohanty1284 2 года назад

great video, as usual, years since I am watching you and you have helped me a lot to get a bachelors degree.

@ZAR610 2 года назад

Very nice job! Really interesting! Thanks for your work!

@greatscottlab 2 года назад

Many thanks!

@anokhautomation4453 2 года назад

Amazing experiment. 👌👌wishing you all success. 👍

@darandombomb 2 года назад

Really loving the content!

@ezequieladrianminniti6252 2 года назад

Excellent video. Keep it up!!

@leosbagoftricks3732 2 года назад

Love your detailed experiments! The whole subject of wireless power strikes me as a prime example of "convenience culture" - a highly inefficient and horrendously complex idea promises to replace a 99.999% efficient $0.50 charging cable that we are just too lazy to plug in.

@blogiblogowicz574 2 года назад

you are forgetting that there is a wired charger attached to your 99.999% efficient plug (at least AC/DC conversion) - at the end of the day, if propely aligned, wireless charging isnt considerably worse (90%+)

@Gooberslot 2 года назад

@@blogiblogowicz574 Wireless charging also has an AC/DC conversion since the wireless charging transmits AC power. In fact, there's probably even more AC/DC conversions since I doubt you're running the charger directly off of mains voltage.

@blogiblogowicz574 2 года назад

@@Gooberslot correct. both have PFC + HF inverter (as in ~100kHz, dont think MHz) + rectifier. The only difference is the magnetics inbetween, which isnt as inefficient as one might think, if properly designed.

@iskandarsyah9624 2 года назад

Look at this for your wireless "charging" on steroids: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-JhypyOUZ2xg.html

@blogiblogowicz574 2 года назад

@@iskandarsyah9624 ahm.. as soon as I read about "overunitiy" I kinda stopped paying attention.

@stm32user 2 года назад

One of my favourite youtuber. Greatscott

@silascone2276 2 года назад

Loving the new intro style!!

@seeers0 2 года назад

Thanks for the interesting video! Maybe a metal detector would be a nice project to experiment further with transmit / receive coils.

@mums2109 2 года назад

Haha I love that you are branching out in your acting! *challenge accepted* Always love your work!

@logicawe 2 года назад

Really cool experiment 🐱 thanks for sharing 👍

@anshumanpanda4962 2 года назад

Love your videos !

@trishanustech281 2 года назад

ur videos are the most detailed videos I have ever seen!!!

@greatscottlab 2 года назад

Thank you ;-)

@thelwq 2 года назад

Scott, what about using a MPPT to track ideal point of the coil and thus produce maximum power?

@deepakkamble3423 2 года назад

Great sir 🔥 Vielen Dank für das sind alles Informationen. 😊

@X-OR_ 2 года назад

Forgive me if my thinking is wrong here but, the output coil is kind of like a dipole, where the electric charges are equal on opposite sides. I wonder if you can use a radiator like a on a Yagi antenna to push the unused electric charges to the other side and have more output from the coil...in one direction ?

@bobnick9892 2 года назад

That's a great idea !

@transistorbrains 2 года назад

If you wanted to carry this experiment further in the future, you could add variable capacitors (preferably controlled via microcontroller) and then set up tests that will sweep through frequencies and capacitances until you get your maximum power throughput for given coil specs. Should be able to create some nice graphs similar to the ones for the commercial coils.

@americamartinez5339 Год назад

do these controlled capacitors have a special name?

@midnightgadget3459 2 года назад

loved this one mate.

@bsand1746 2 года назад

You're awesome! Love your videos, thank you👍

@pranavchippalkatti2850 2 года назад

@GreatScott u r truly great !!

@richgolfs 2 года назад

Excellent video!

@HoXDipannew 2 года назад

You're the best 🤩👍🏻

@greatscottlab 2 года назад

You're breathtaking ;-)

@briantb5550 2 года назад

Great stuff Scott, thanks

@greatscottlab 2 года назад

Glad you enjoyed it

@thetechboy8529 2 года назад

As always, great sir.

@user-ub2bh9ze2n 5 месяцев назад

ur the best teacher i have ever seen thanks bro 😍 😍

@aks8403 2 года назад

Nice video .This is a topic I really like!

@greatscottlab 2 года назад

Glad to hear :-)

@harshgandhi100 2 года назад

Ventures into the unknown require sheer will. Its an inspiration to watch you.

@dodge1629 2 года назад

This wireless power system thing is old ... when I was I child my dad built a small AM radio that was powered by it's own antenna! It was awesome the way it works due it was using the radio signal to power on the little circuit! And tha was on 86's ....

@jimmyb1451 2 года назад

@@flexairz Received, yes. Kw transmitted. Which is why "wireless power" is such a waste of time.

@AhmedAli-op6ng 2 года назад

@@jimmyb1451 not really it is the future of EV ( TAXIS etc) search more about it. Some companies even claims and have tested it to as efficient as 94% for bulk of power more than 50 KW.

@reverse_engineered 2 года назад

That AM radio managed to recover milliwatts of power from a transmitter putting out many kilowatts. That's fine for transmitting information, but it's extremely inefficient for transmitting power. All modern radio devices (e.g. mobile phones, Wi-Fi) perform in much the same way, though often with more directed and efficient methods. But still, the receiver receives only a very small fraction of the power transmitted. The goal behind wireless power transmission is to receive a large portion of the transmitted power over a considerable distance, not just some tiny fraction of it.

@Drxxx 2 года назад

great video! super channel!

@user-pv5kw6iu2u Год назад

Hello, Great Scott. Great to see your extensive experimentation with wireless power transmission. I have a question to ask you now. I reproduced the H-bridge drive circuit exactly as shown in your video, but when I connect LC in series to the circuit, even if a small VCC is given, such as 2V, the current can be close to 1A, which is consistent with a short circuit. The resonant capacitor is also overwhelmed, and the pin is almost in a state of fusing. How can I use it correctly to generate resonance?

@jpsimas2 2 года назад

such a small current loop, relative to the wavelength, actually acts like an omidirectional antenna on the far field and radiates the more to its side than to its middle... While you're in near field your system works, but in the moment the distance increases enough you end up in the direction where your antenna radiates the least. One way of possibly solving this is adding some sort of ferromagnetic material to the middle of the coil, so that the wavelength that matters is the one inside the material (or somewhere in between that and the one in vacuum because the coil won't be fully embedded in the material). When the perimeter of the loop is close to the wavelength (in the ferromagnetic material) then you get a directional antenna

@ShahZahid 2 года назад

ah man i was waiting for this video

@greatscottlab 2 года назад

I hope you will enjoy it :-)

@gfsm 2 года назад

The MIT has some brilliant minds and money for research... I think that it's very difficult (or almost impossible) to replicate their results with the resources that most of us have... even in the university (my case). But, as always, this was a very interesting video. I usually share them with my students and other professors at the university. Thanks for your time and dedication!

@paulpease8254 2 года назад

Super interesting, thanks!

@goliathsuperstar 2 года назад

i love coming to your videos, your are amazing

@greatscottlab 2 года назад

Glad you like them!

@Purple431 2 года назад

I will definitely check out those older videos of yours! By the way... Would you ever build a plasma globe with tesla coil or just a simple flyback driver circuit?

@greatscottlab 2 года назад

Great! Eventually I can do that.

@Purple431 2 года назад

Nice

@electronic7979 2 года назад

Excellent

@Brassmonger 2 года назад

Variations between capacitance and inductance for the same frequency also matters. Your load impedance also makes difference.

@allasayegh1411 2 года назад

great as always

@s.sradon9782 2 года назад

corporation: here's a charger that's half as efficient, 4 times slower, 10 tiems more expensive and it doesnt allow you to use your phone while chargin, but it's kinda cool. everyone: **deal**

@theodiscusgaming3909 2 года назад

The power of marketing.

@rpavlik1 2 года назад

Kids can't break your phone's charging port if you aren't using a charging port.

@evensgrey 2 года назад

@@theodiscusgaming3909 None of the people behind those charging systems are good enough at marketing to get people to bite something that obviously crappy. I think most engineers they interview look at the thing they want them to build and say to themselves, "I don't want to have THIS on my resume!"

@arthurmoore9488 2 года назад

You're forgetting the most important part. Just toss your phone on a particular spot and it's charged when you're ready to use it. Wired charging is still extremely valuable, but I don't use my phone while sleeping and it's "good enough." To not have to plug in a cable every night.

@s.sradon9782 2 года назад

@@arthurmoore9488 I just have my cable organized so it takes no more effort to plug in and it stays in.

@------country-boy------- 2 года назад

Thank You for making this video !!!!!!!!!!

@ynzeselders4184 2 года назад

Would have been interessting to see how the litz wire would compare at much higher frequencies.

@b062838868 2 года назад

incurred all of the penalties but got none of the Benefits

@JawadAhmadsahibzada 2 года назад

Great 👍🏼 Scott !!!

@greatscottlab 2 года назад

Thanks 👍

@brettmoore3194 2 года назад

Have you tried resonant rlc circuits? Use variable capacitor, var. Resistor and var. Inductor to tune. As distance increases so does the resistance so it changes the frequency. You will have to keep tuning until resonance occurs. Dual tuning forks show the same effect

@Eric-qp7rx 2 года назад

I always wanted a way to transfer power through a window or glass sliding door. Ive rented apartments before that didnt have a outlet outside and i wanted to plug in a light or something. Theres nothing like that on the market but i think it would be a great idea for a product. I think the technology is there for this, someones just got to do it.

@mintunath3919 2 года назад

Hi greatscot great experiment. I already developed a WPT system a month ago that is without microcontroller and that can send power with 40% efficiency. And power up from 7.5V battery🔋/power supply. The distance I achived about 30-40mm.

@Miata822 2 года назад

I wonder if a parabolic reflector, perhaps from an old satellite TV system, might make the generated power more directional.

@greatscottlab 2 года назад

Hmmmmm good question

@dougcox835 2 года назад

Nope, You can't reflect or focus magnetic fields like that. You could add a ferrite core though to give the field a more directional path. But you lose the nice flat shape then.

@Mobin92 2 года назад

@@dougcox835 But then how do satellite dishes work?

@vripscript 2 года назад

@@Mobin92 microwaves are not magnetic flux

@Miata822 2 года назад

@@vripscript Aren't all radio waves simply modulated magnetic flux?

@alejandrovidal1607 2 года назад

Wow you discover the radio!!

@alainsaffray4471 2 года назад

Theses systems emites in all directions. It can be interesting to use directional antenna at emitter and receiver for concentrate the electromagnetic wave

@dz-abouttechnique1849 2 года назад

Great experiment.

@kylebrake1806 2 года назад

I love your videos!

@letitrotfuckit 2 года назад

Nice! You built a long wave transmitter

@chefboyrdee1 2 года назад

May I suggest using a 2 parabolic metal disks to direct the energy. At the moment it's going in 360 when you're receiver (RX) is in front of the Transmitter (Tx). An Antenna on the Rx would also make things much more efficient and capable for long distance.

@KennethNicholson1972 2 года назад

Yes, brilliant... Needs focusing, as with a yagi antenna, at both the transmitter and reciever.

@user-gr5qb2iv8w 2 года назад

great doing!hello from Belarus!

@sitaramchandora3104 2 года назад

Love From India 😍😍😍 Awesome Content Bro

@AllThatInterestingStuff 2 года назад

Please look at the magnetic loop antenna designs for reference.. Some of them use the coax shield for the loop, because of the skin effect is very efficient. They are also very simple, you only need the coax cable and a tunable high voltage capacitor that varies the frequency.

@blanana_m 2 года назад

This is so cool! I especially love the new video and Thumbnail style Btw: Have you made a High Frequency tesla coil yet?

@greatscottlab 2 года назад

I made a tesla coil before. It was a 3 part video series.

@blanana_m 2 года назад

@@greatscottlab I meant a Tesla Coil in the 10Mhz Region

@arthurmorgan8966 2 года назад

Imagine powering up small robotics within vacuum chambers to do nanotech stuff like Thought Emporium’s sputtering machine. Where battery cannot be used due to durability or physical conditions, this could be super handy.

@gacherumburu9958 2 года назад

Good job!

@prashkd7684 2 года назад

I wrote an IEEE paper back in 2012 on wireless energy transfer using planer transformers & our method showed far better efficiency and better control. The Key is achieving resonance between the Tx and Rx coils.

@69iqtutorial 2 года назад

Nice video, i think the max power can be transmitted by making a zvs circuit at the primary side maybe and making the secondary tank circuit with a wires having much more strands of wire

@greatscottlab 2 года назад

ZVS does not improve this.

@samarthguleria788 2 года назад

He is going towards efficiency and distance

@69iqtutorial 2 года назад

I mean, zvs can generate a sine wave with more that 3× peak voltages

@maxximumb 2 года назад

Every day I learn something new.

@alternateracoon4872 2 года назад

The handwriting is so satisfying and the way he simply explains stuff is so amazing

@mikegraham7078 2 года назад

I notice that not only is the MIT coil five winds instead of six, it's also evenly spaced out along a 'cylinder' rather than being a clustered bundle. Might that make a difference in forming an effective coil?

@kanhaiyalalrajput3215 Год назад

This is the type of experiment that I like, in which we have to figure out the stuff by ourselves (and to construct instruments from scratch) rather than just following the pre-formed instructions of doing practicals with readymade apparatus from the Manuel.

@attilagergely6734 2 года назад

Cool Project!

@greatscottlab 2 года назад

Thanks :-)

@konserv 2 года назад

I remember battery-free crystal radio kits for kids. That's the kind of remote power transmission.

@andyhowlett2231 2 года назад

Yes it is, but the broadcasting stations us tens of kW and even just a mile away the crystal set can only provide a few mW for headphone listening, even when a long wire antenna is attached. The losses are way too high for power transmission.

@sam7901 2 года назад

You could attain much higher frequencies using GaN fets. If you take care in choosing the core of your magnetics (To bring down core losses), you can have a very compact design

@electroinduction1512 2 года назад

The moment i got the notification I just click i was waiting for this video . your videos are the best 🔥🔥🔥🔥

@greatscottlab 2 года назад

Thank you so much 😀

@DonaldDuvall 2 года назад

I am curious if stranded v. solid copper wiring in the coil make a difference. Or maybe even each coil being a different wire? There is something i heard about high frequency and skinning effect. I think that might be an advantage for the transmitter coil in the high MHz+ frequency range, and maybe solid or stranded receiver coil doesn't matter? Love the video, as always, i am left more curious than before watching, and i now know a lot more. Thanks 😊 and keep it up.

@dineshvyas 2 года назад

Hello GreatScott, you need some simple machnical apparatus for this experiment. I am sure it will give more encouraging results.

@BuzZ. 2 года назад

Making an actual qi wireless phone charger would be really cool. I has to communicate with the phone/ stop transmitting if some metal gets on the charger so it doesn't work as an induction heater

@evensgrey 2 года назад

I don't think that would be too difficult. The charger base can obviously detect if there's something drawing energy from the pilot field. The obvious thing to do is put an RFID tag in the charger on the phone so the charger base can get a signal that the thing pulling energy from the charger base is a phone charger and not some random hunk of conductive material. That could even be used to identify how much power the charger base should pump out, since not all devices necessarily want the same voltage and current.

@dspartan007 2 года назад

Great video

@fleckione-workinprogress4249 2 года назад

Very interesting!

@electroscientist4447 2 года назад

great project scott I understand why you uploading frequently recently because of the stupid youtube algorithm . very sad too think that stupid nonsense video gets lots of view .and educational video didn't ... however I hope the best for you keep up your great work ... and lastly do you have any plan about drone project ?? It'll be very interesting to see stuff like that on here

@TutorialsGuru 2 года назад

Same here. Free energy is doing rounds with millions view, but Nobody carefully reads their standard 10 Science books. Sad state of affairs.

@omniyambot9876 2 года назад

Yeahh he is getting a lot less views

@electroscientist4447 2 года назад

It's very sad when you think about it Eev-vlog,electonoob , micro-raps their avarage is even lower

@512mb4 2 года назад

This remind me of a movie, idiocracy

@origamerking6927 2 года назад

is there any sort of way to make the magnetic flux be more direct towards the other coil like an antenna? if there is you should try it out!

@udhayakumar-mn2de 2 года назад

Thanks for great video, please make emergency inverter bulb circuit with fast charging , typical emergency bulb in market takes 8 hrs to charge.

@FadiFadi00 2 года назад

Honestly, as a very old fan of yours and an electrical engineer inspired by you, i definitely would like to see you redoing that 60Watt 2meters wireless power experiment!! Cause nothing is impossible for you! Hope you change your mind and do it ^_^ + I would like to know if the air between the transmitter and receiver is dangerous to be around (since it has a high power)