To those wondering, yes this really works. It took me a while to troubleshoot it (it didn't work right off, you'll see why) but I will say you absolutely need the 1k resistor. In another DIY article I read stated that the resistor will reduce the power and help the longevity of the LED. My LEDs are rated higher so I figured I didn't need it. Coil wouldn't work until I added it. Now I get to move forward with my project! Thanks for the tutorial!
For those of you who want to try to build this I can confirm that it works just fine with the parts listed and for the information that is not precisely described, I created coils of a diameter of 49mm (basically I didn't have a thin style coke can and guessed at around 5cm) I found a tube of silicon gap filler used in a caulking gun was 4.9cm so I went ahead with that. I used the copper wire as described in 0.4mm following the number of turns and orienting the ends opposite each other and the central loop at 90' to those. When I tried the experiment with 0.63mm wire I did not have success. But with the components listed, 0.4mm wire at approx 5cm diameter it worked beautifully! Good luck! And thanks The Q for a really satisfying project I did with a student of mine.
Pretty simple and electronically very cool! If you're wondering how it works, it's like a "reed oscillator", but with a transistor, not a relay. A coil can't generate large fields without an oscillating voltage (like AC), but he's using direct current from a 9v battery, what gives?! Well, coils are inductors and when you pair that with the resistor/transistor magic happens. The transistor is the key here, it's acting as a gate using the feedback from the inductors building voltage, but that feedback isn't immediate, it takes time for the voltage inside the coil loop to build strong enough to turn "off" the transistor gate. Then the voltage collapses, and the gate opens agian and the cycle starts all over again. So it oscillates! The receiving coil connected to the LED is capturing current from the power-sides building/collapsing magnetic field. Try this with more/fewer loops on one or the other side and measure the voltage (hint transformer). To learn more look up 'feedback oscillator' or 'Colpitts oscillator'. This is also what's makes the "switch" in the switched-mode power supply or DC-DC converter.
thanks, because this video appears to be fraud without your seemingly legitimate explanation which i will research. thank you well, i researched "colpitts oscillator" as you suggested, abd that turns dc into ac also using capacitors, none if which are applicable to this video. you are a fraud and so is this video thumbs down.
It's works! I use bc547 transistor (NPN) and 1k resistor. When I use 10k resistor it didn't work but when I use 1k resistor it's works! ( 27k or 10k it's too much resist)
This is excellent! Just what I needed for a project that I am working on; my big hang up was the oscillating voltage, and this has just solved the issue! Thanks for this.
or perhaps reduce resistance, remove transistor and add a capacitor. tune both coils to center frequency to have a little more power at the receiver, as well as the range. P.S. resonant scheme works for AC sources
This based on Electromagnetic Induction. When we change position of coil the magnetic flux the changes and induces emf and from Maxwell theory, change in electric field produces magnetic field . And also applied source is DC so electric field constant but changing position of another coil flux changes current induced.
hello! i'm a mere student and i don't understand something here. Why is there no need for a magnet? Our teacher's demonstration had a magnet on the circuit. Can you please explain? I would greatly appreciate it 😃
@@thisgirlpurpleyou3334 actually there is flux linked with coil which carry electric current. As we know current carrying charges produces electric field. As per sir Maxwell, change in the electric field produces a magnetic field. This magnetic field opposes cause that induces magnet field so,a current produce in opposite drn to oppose this cause. Due to this a current produce in Circuit.
The led is pretty dark. This is because you don't use the resonance frequency of the coils. You also should use capacitors at the end of the coils. GreatScott! has a good video about wireless charging. I definitely recommed you.
Allow me to comment. This your design, the way you built it, will cause the battery to drain quickly and will not be the LED that will drain it, it will be the transistor. For you to have a 90% efficiency and more amperage I suggest you use a BD139 transistor with 2 ceramic capacitors (same values) and 1 diode. One of the capacitors goes into the collector of the bd139 and the other capacitor goes into the receiver along with the diode to do the polarization. I can charge AA batteries and also those larger ones that comes in laptops. Of course the charge is slow but this is even good as they extend the useful life of these batteries. 👍😆
I would like to share some tips.... At first mine wasn't working and the transistor was heating Then I removed the resistor. And interchanged the connections of battery . It started working.!!!!😊 Ps. You can use as many windings and Size of the coil..... Comment for furthur suggestions and questions...
You just need a changing magnetic field to induce a voltage on the other loop. The transistor is turning on and off rapidly based on the feedback to its gate, which produces a changing magnetic field. This is obviously a flawed circuit, since it's not using an RC oscillator or H-bridge to create an AC signal, so it's very limited in the range and power it can produce. I'd look elsewhere.
it is known as mutual inductance. when current flows through the coil in generates a magnetic field which passes though the second coil thus inducing a emf and a current in that coil. This is based on faradays law and lenz law
Idk if this is correct but I found a way to make a DIY transmitter. You basically need aluminum foil and copper wire. Just take the aluminum foil to make a base for it and to connect it to a connecter. Also, don't forget to add a coil in between the aluminum foil and transmit the signal and add the 3 add on parts for the transmitter to have a good signal.
No it won't work try out the same thing with 4 rechargeable batteries taken in series, a 44n transistor and a diode bridge in receiving coil Boom your wireless power bank is ready
You use induction like electric hot plates you do a bigger one like a carpets or if you have time a entire room sorry for my English I am french Like my comment for he can see hit plz that's important
you can add a half bridge rectifier (or even better, a full bridge)plus a capacitor before the led and it will stays on constantly.but make sure to connect the + and - legs of led correctly to rectifer or else it may fry or even explode.
Tried it. Didn't work. Wondering why? At first I used just copper wire, then I tried it with enamel copper wire. (I swear I connected everything correctly) Does the diameter of the coil matter? Mine looked a little thicker than yours.
User TCQ the transistor does not convert it from DC to AC because their no outer signal to base to output a ac waveform If u still have any doubt check this-- ruclips.net/video/TQwGjhwPEik/видео.html
The transistor its used as an amplifier. That's it's main role. It amplifies signals relative to voltage on Base pin. That's why it has a resistor on Base.
hey im a newbie to all of this but isnt this possible only with AC and not with DC, did he somehow convert the DC to AC or somethin with the transistor n stuff, again im a newbie so pardon me if i have named any component wrong
is it possible to do this with a small ring inside a bigger ring? (im thinking of putting a project together where the device gets charged by being put upright in a base)
You need AC current to do this, but batteries have DC current. I’m guessing the transistor changes the current, but how? I heard you need more than 1 transistor to switch a current like that too
I have a problem. When i try to light the led, it works for a second and then i have to move the position of the tranzistor and the copper wire from the + pole. Any suggestions?
![I.N "HALLUCINATION" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/n5B5q1Hwt_U/mqdefault.jpg)
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
To those wondering, yes this really works. It took me a while to troubleshoot it (it didn't work right off, you'll see why) but I will say you absolutely need the 1k resistor. In another DIY article I read stated that the resistor will reduce the power and help the longevity of the LED. My LEDs are rated higher so I figured I didn't need it. Coil wouldn't work until I added it. Now I get to move forward with my project! Thanks for the tutorial!
I am interested in hearing more about your project Brandon..
Amazing, im very glad about this information, thanks a lot brandon, my project is totally work because of you
Hey I am using a 18 gauge wire how much resistor and what transmitter should I use for it to work
@@hazeliora9528it's too thick, try using 28 to 32 gauge
1k resistor or 27k? I dont understand
For those of you who want to try to build this I can confirm that it works just fine with the parts listed and for the information that is not precisely described, I created coils of a diameter of 49mm (basically I didn't have a thin style coke can and guessed at around 5cm) I found a tube of silicon gap filler used in a caulking gun was 4.9cm so I went ahead with that. I used the copper wire as described in 0.4mm following the number of turns and orienting the ends opposite each other and the central loop at 90' to those. When I tried the experiment with 0.63mm wire I did not have success. But with the components listed, 0.4mm wire at approx 5cm diameter it worked beautifully! Good luck! And thanks The Q for a really satisfying project I did with a student of mine.
rating of bulb?
Thanks for this. I just tried it but it didn't work. I think my coil was too thick. Could that have effected it?
Will Parker PLZZ again explain it...
Actually, I m going to perform it..suggest me the wire diameter and thickness...which I use to perform this...
I tried this 4 times, it's not working
Pretty simple and electronically very cool! If you're wondering how it works, it's like a "reed oscillator", but with a transistor, not a relay. A coil can't generate large fields without an oscillating voltage (like AC), but he's using direct current from a 9v battery, what gives?! Well, coils are inductors and when you pair that with the resistor/transistor magic happens. The transistor is the key here, it's acting as a gate using the feedback from the inductors building voltage, but that feedback isn't immediate, it takes time for the voltage inside the coil loop to build strong enough to turn "off" the transistor gate. Then the voltage collapses, and the gate opens agian and the cycle starts all over again. So it oscillates! The receiving coil connected to the LED is capturing current from the power-sides building/collapsing magnetic field. Try this with more/fewer loops on one or the other side and measure the voltage (hint transformer). To learn more look up 'feedback oscillator' or 'Colpitts oscillator'. This is also what's makes the "switch" in the switched-mode power supply or DC-DC converter.
Can you please tell me what is frequency of this circuit or how to calculate that?
thanks, because this video appears to be fraud without your seemingly legitimate explanation which i will research. thank you
well, i researched "colpitts oscillator" as you suggested, abd that turns dc into ac also using capacitors, none if which are applicable to this video. you are a fraud and so is this video thumbs down.
I used a 1.5v double a and it still worked, awesome video.
How many coils did you do?
The soldering was amazing! It looks like how I fixed my fan controller in my 1988 Honda Accord.
Thanks bro helped me to complete my Holiday assignment.
Thank you very much😀😀😀😀😅.nice video👍👍👍
It's works! I use bc547 transistor (NPN) and 1k resistor. When I use 10k resistor it didn't work but when I use 1k resistor it's works! ( 27k or 10k it's too much resist)
Didn't cause ur 9v battery to overheat ?
Doesn't work for me =(
What is the volt of the battery you ised
@@jazer992 9 volt
@@dannyboy132100 No
This is excellent! Just what I needed for a project that I am working on; my big hang up was the oscillating voltage, and this has just solved the issue! Thanks for this.
WHY ARE THESE SO SATISFYING TO WATCH? COME ON
or perhaps reduce resistance, remove transistor and add a capacitor. tune both coils to center frequency to have a little more power at the receiver, as well as the range. P.S. resonant scheme works for AC sources
What are the number of this Cepesitor
This based on Electromagnetic Induction. When we change position of coil the magnetic flux the changes and induces emf and from Maxwell theory, change in electric field produces magnetic field . And also applied source is DC so electric field constant but changing position of another coil flux changes current induced.
hello! i'm a mere student and i don't understand something here. Why is there no need for a magnet? Our teacher's demonstration had a magnet on the circuit. Can you please explain? I would greatly appreciate it 😃
@@thisgirlpurpleyou3334 ok
@@thisgirlpurpleyou3334 actually there is flux linked with coil which carry electric current. As we know current carrying charges produces electric field. As per sir Maxwell, change in the electric field produces a magnetic field. This magnetic field opposes cause that induces magnet field so,a current produce in opposite drn to oppose this cause. Due to this a current produce in Circuit.
Simple,neat & clean project.🤞
do you know what type of tool he used to connect the wires?
@@ninorlr soldering iron
Ironic how much wire it has.
Tragedic how idiot you are.
Ayy that's not nice! The more coils the more power so if he could do more it could be even better effect
@@integrationofmanandmachine4714
You don't get the joke, do you ?
it's always hilarious seeing someone get completely triggered over a simple comment XD
lol
Amazing you inspire me so much
Mr. Experiment yes
Mr. Experiment i love this channel
It's nice to hear guys
The Q Where are you from ?
Mr. Experiment you are right
The led is pretty dark. This is because you don't use the resonance frequency of the coils. You also should use capacitors at the end of the coils. GreatScott! has a good video about wireless charging. I definitely recommed you.
This is basically an air spaced power transformer inducing current from the primary to the seconary coil similar to how a wireless phone charger works
This is a really great project for groundschool wow
Allow me to comment. This your design, the way you built it, will cause the battery to drain quickly and will not be the LED that will drain it, it will be the transistor. For you to have a 90% efficiency and more amperage I suggest you use a BD139 transistor with 2 ceramic capacitors (same values) and 1 diode. One of the capacitors goes into the collector of the bd139 and the other capacitor goes into the receiver along with the diode to do the polarization. I can charge AA batteries and also those larger ones that comes in laptops. Of course the charge is slow but this is even good as they extend the useful life of these batteries. 👍😆
You do to much cool stuff it's amazing
You're possibly the fastest growing RUclips channel ever!
amazing, i hope that you make a tesla coil in next video :)
thanks dude i have been working on the same but was using normal magnets now i will try electric magnet which is your idea thanks alot
I would like to share some tips....
At first mine wasn't working and the transistor was heating
Then I removed the resistor.
And interchanged the connections of
battery .
It started working.!!!!😊
Ps. You can use as many windings and
Size of the coil.....
Comment for furthur suggestions and questions...
Thanks a lot
Mine started working ❤❤
I keep try every single craft but I don't get it as good as your good work man.
in your next video can you teach me haw to make a refrigerator ! that would be cool and cool for your millions if people who would watch it !
Get some peltier devices and a few heat sinks boom refrigerator
i did this without the resistor and it works
@Etrafi kabeyle dolduran bne XD I just removed it from the circuit. Maybe it was luck as I know nothing about electronics
Challenge: The Q must make a video involving no cardboard or glue
There is the matchstick f1 car
Now he’s usin wood even iron
Kaila mo anang transformer sa inyong cellphone charger? Mao ra gihapon na
your channel video is my favourite bro
Wow, from DC source!😂
I will surely hire you it was possible 😂
?
He is using the transistor to switch the DC can't you see?
great you just reinvented transformator.
You need two capacitors to cancel out the reactance of the coil.
explain plz
No only one
Of what number and Thier position
Nicely shown, Wireless Power transmission experiment 👍.
Can I use any other resistor like 22k or 47k or should it be only 27k because I can't find one in my area
go for lower not higher.
thanx bro your video teaching me
This is a MAGIC !
JONNY HELLFIRE this is science =_=
SCIENCE
Science without magnet
JONNY HELLFIRE no this is transformer
Incredible... Works Perfectly.
Bro are you used soldering for conection
Totally not
Just the common things you find in a common store in a common place
Totally makeshift too
(Pardon my English 🙂) Can anyone explain me how is this working as an oscillator as there is no capacitor used above. How ac power is being produced?
You just need a changing magnetic field to induce a voltage on the other loop. The transistor is turning on and off rapidly based on the feedback to its gate, which produces a changing magnetic field. This is obviously a flawed circuit, since it's not using an RC oscillator or H-bridge to create an AC signal, so it's very limited in the range and power it can produce. I'd look elsewhere.
@@masteranimation2008 Thank you!
it is known as mutual inductance. when current flows through the coil in generates a magnetic field which passes though the second coil thus inducing a emf and a current in that coil. This is based on faradays law and lenz law
Idk if this is correct but I found a way to make a DIY transmitter. You basically need aluminum foil and copper wire. Just take the aluminum foil to make a base for it and to connect it to a connecter. Also, don't forget to add a coil in between the aluminum foil and transmit the signal and add the 3 add on parts for the transmitter to have a good signal.
Can i use solar panel instead of battery and mobile (through OTG Cable) instead of LED.
No it won't work try out the same thing with 4 rechargeable batteries taken in series, a 44n transistor and a diode bridge in receiving coil
Boom your wireless power bank is ready
Amezing sir 👌😊
wireless power transmission- first ingredient: copper wire
LMAO
I made it for school project and it really works .The cost for making it is very less.
How many voltage battery you use
9 voltage battery
Bhai contact no share karo mere project ke saath issues hai
I can't
The cost is around 60-70 rs
Does it work with a 22k resistor?
HRITIK
Please tell me what is resistor
Superb 👌👍😎👏
You use induction like electric hot plates you do a bigger one like a carpets or if you have time a entire room sorry for my English I am french
Like my comment for he can see hit plz that's important
moctar Your English is how badly I understand French
Bonjour
_Bonjour_
Saluté
:)
This is excellent. Can you please tell me what different mediums there emf can pass through. Like, will it pass through a wall?
1:55
That sht turns me on
Umm..
AWESOME SIR 😊
You Are The Best Magician.
may I use 22k resister . please reply
I need to say it worms and it is amazing. I have tried with o.5 milimetars wire.
is it works?
I have a charging pad and I made a coil and my led goes: blink, dim blink, blink, dim blink
you can add a half bridge rectifier (or even better, a full bridge)plus a capacitor before the led and it will stays on constantly.but make sure to connect the + and - legs of led correctly to rectifer or else it may fry or even explode.
Hey can I use any transistor like that?plz reply.
1:23 what is that thing called
Transistor
awesome brother👌👌👌👌👌
thank））
Now, how to extend the range of it.
By increasing linkage flux ..
@@azaykumar8792 how to increase linkage flux
By increasing number of turns and current
Wouldn't you need a resistor at the LED and maybe a bridge rectifier?
If you use alternating current then u wouldn't even have to move it.
You don't need to move it using this circuit.
What do you even mean?
That's presumably what the transistor is for.
The circuit uses the feedback of the coil with the transistor to turn the 9v dc to very high frequency ac
Increase range?
Loss factor?
Thanks!
why is it 15 fps
here comes the gamer
Thank you so much bro,🙏🙏
Width of copper wire
Help me it's very urgent
I Will 100 likes
Like!
If mutual inductance works on the principle of EMI then by using DC source how the power is transmitted to LED.
Actually it uses more wires than a not wireless...
Benjámin Péter but it gives the idea of wireless power, so you can understand and use it in different ways :)
Benjámin Péter gtfo
Actually, it uses more energy than a not wireless.
good for you
Isnt it strange that we add an "less" in front of wire but use "not" in order to show it has a wire. "Not wireless".
Tried it. Didn't work. Wondering why?
At first I used just copper wire, then I tried it with enamel copper wire. (I swear I connected everything correctly)
Does the diameter of the coil matter? Mine looked a little thicker than yours.
because it 's DC circuit, the wireless transmitter should be AC circuit.
U need ac for wireless transmission .....
I think this is fake...
No you don't XD
User TCQ the transistor does not convert it from DC to AC because their no outer signal to base to output a ac waveform
If u still have any doubt check this-- ruclips.net/video/TQwGjhwPEik/видео.html
This has been confirmed as real
The transistor is there to create an alternating current.
The transistor its used as an amplifier. That's it's main role. It amplifies signals relative to voltage on Base pin. That's why it has a resistor on Base.
works on the principle of mutual inductance.you can incresa the coupling coefficient of the coils by introducing a dielectric medium bw them
electromagnetism!!👍
dude. it was midnight here when you uploaded this. Seriously?
Maybe in india the time is not like in your country
just curious as too why the resistor and what effect would a stronger or weaker resistor have on the output?
If the value of the resistor decreases, the brightness of the led shall increase, it is the vice versa if you increase the value
Nice man!!
Why do we need transistor??
It's working upload more videos
Could I use a 10k resistor and a C1815 transistor as a replacement?
Is the voltage in the air coil ac or dc.I think dc as it is not turning on if I connect the coil to +- rather than _+ of led
c' est vraiment trop cool ce que vous faites vous êtes vraiment trop fort 💪💪💪💪💪👌👌👌👏👏👏👏👏👏👏👏
Tesla tower model like connections... Yes it is real
Semplice, chiaro, perfetto. 👏👏👏
Can i use 2N3904H331 transistor
The project looks amazing
What principle is this based on?
this is simply inducing current by the magnetic field of the coil attached by the battery.
Why did u take 30 turns of enamelled copper wire??..
if i roll the coil more than 30 turns, can the range be farther?
Is using 33k resistance good
Its in theory, mini transformator, and there is loot of power lost in medium (air)
hey im a newbie to all of this but isnt this possible only with AC and not with DC, did he somehow convert the DC to AC or somethin with the transistor n stuff, again im a newbie so pardon me if i have named any component wrong
Can i use a potentiometer because i do not have that resistor?
So what do the transistor and resistor do here exactly?
is it possible to do this with a small ring inside a bigger ring? (im thinking of putting a project together where the device gets charged by being put upright in a base)
Thanx this model is working sometime chamake maring
Will it work without transistor and the power source is a 220V ac ?
my 2n2222a is getting very hot! What can I do about it?
Same issue
What if i use a non insulated copper wire while making the coils
This is more of an air-cored transformer but nice presentation.
Will it work if I used 30 turns at primary and 100 turns at secondary?
hmmm
ut is basically a transformer without core.
Is this an induction coil? Does the secondary coil attached to the LED need to be thicker wire?
add a core to each coil to increase range if you want
You need AC current to do this, but batteries have DC current. I’m guessing the transistor changes the current, but how? I heard you need more than 1 transistor to switch a current like that too
The transistor doesn't change the DC to AC current, and in this experiment DC current will work just as fine as will the AC current.
I have a problem. When i try to light the led, it works for a second and then i have to move the position of the tranzistor and the copper wire from the + pole. Any suggestions?
Is it because I used tape that izolates the current to keep the copper wires in their shape?
I'm thinking about implementing this into scale modelling. How can I scale it down?
Why did you use a transistor in the primary coil? Because DC does not create changing magnetic field, unlike AC?
your soldring machine is good how can I get one look like you? 😁