brilliant way of showing how all the rf around us radiates energy. Thanks for all your great tutorials and the time you put into your channel .Pete .....uk
the simplest and most honest review of this circuit i have seen,and i have seen and read many.you are always honest ,that's why i subscribe,never any bs thanks as always for you work and sharing freely.
I loved doing this experiment. Tuning into a resonant frequency, like using a crystal radio, can increase the power. Also, the higher the antenna is into the sky, the greater the potential. Especially if you also use earth ground... just like a crystal radio. Keep up the great work my friend.
It's true. Richard Feynman won a nobel prize for that if I'm not mistaken. But for sure he discovered it and wrote a book about it. Check out rimstarorg videos on powering a corona motor with atmospheric electricity.
Bigger capactors may have a larger power-up time, but then can sustain a load longer. So you can change that. Plus a direct short to light the LED of course drains the LED fast. But if you were to use the Joule Thief circuit, you could permenantly light the LED with very little power. Its really an oscillator, and the LED is lit using high high-frequency voltage spikes, but the eyes sees the LED as bright, even though its pulsing (off/on/off/on).
Thanks for the video. It was quite helpful. A couple of things that would help are a longer, insulated antenna (not grounded), have the antenna in an open area. Also, if I'm not mistaken, a ground wire from between the electrolytic caps would help.
A large antenna like a 100 foot long wire antenna will bring in usable current. Not a lot but enough to charge a small battery. If you live near high voltage power lines you can get power but stay off rights of ways because they belong to the power companies and we don't want to steal power. It's ok to harvest leaked electricity that's on your own property but never on rights of ways. 73
@@ronb6182 - Thanks again. I was wondering about using 5 x 20 foot long antennas for the same (or very similar) result as 1 x 100 foot wire. Also, I was wondering about using an insulated stretch of aluminum foil. Oo, oo, I know! Aluminum foil wrapped around a tube with each layer insulated from the others by appropriately sized waxed paper as an antenna. Hmmm. Also, would a ground wire between C3 and C4 be a help or a hindrance?
Would a longer antenna or different antenna design cause any noticeable change in charging rate? If there is an increase in charging rate with a bigger antenna, it might be more useful.
Oh my god, that is so cool! Yeah it's little energy but I'm sure it could power a low-power microcontroller to light up an LED for a few milliseconds every minute for example, and that is cool!
It might be enough power to run MOS logic and a liquid crystal display, like a simple clock. I'd like to see it with a fractal antenna too. It is a way to evaluate antennae.
I have an inquiry. Hypothetically, say you modified your antenna to maximize electron harvest, and upgraded your capacitor sizes from electronic grade starter storage, and ending with either commercial grade 600+ volt capacitor, or homemade Leyden Jar modified for higher voltage storage, over longer duration of time, would this benefit the process?
using the same circuit i get 60v when i sit on the roof of my 2 story house situated on the top of a hill no more than 300 meters away from a small radio tower. I managed to charge a 2.5v 300farad supercapacitor to just under 2v in 5 days.
+Alexian Dorias . can't remember sorry. I did this experiment over 18months ago. I used the supercap to run a joule thief circuit driving the led. Lol maybe i should have written it down my results somewhere.
Very Nice, let me tell you a true story. Back in the 80's a guy built a transformer and circuitry and mounted on a tall pole, he then positioned it just below the standard power lines behind his house near the alley...... he was able to get substantial voltage and ran his house with it.... he got away with it for almost a year and then the power company took him to court and insisted he was stealing power ....he claimed ( and I agree ) that he was only turning the magnetic fields that were being emitted into free space into energy, he was utilizing wasted energy ..... unfortunately he lost the case ............ moral of the story ........... only run the pole at night so the power company doesn't see it .........
Alien Physics moral of the story - electricity IS free..Tesla intended it to be but u know what they did to him, right? We are being raped by the power companies for sure.
Wow, what's up with all the dots. Of course he was stealing from the power company. He's loading the power line ever so slightly, and it changes the impedance of that line accordingly. The energy is not free. For the power company, they need to set precedence with the incident. They don't want to have to argue with every smartass that comes up with this idea, to "fool the system"
Perhaps if the wire (antenna) were coiled and placed in a vacuum tube, what would possible happen? And also increasing the number circuitry and antennas to up the voltage and capacitance... Worth looking into...
Which all diodes did you use? I mean at 00:23 ,you told you used 1N34, OA70, 1N4148 but you used 4 diodes in the circuit? So which one is the fourth diode?
I actually really like the circuit. So... 2.5 volts off of a very small antenna is actually pretty good. Especially if you consider that the voltage drop across your full bridge rectifier is around 1 volt; this is actually pulling around 4 volts out of the air. If you really want to increase the efficiency of this circuit, take a straight wire connection after the AC caps, but before the rectifier, and connect it to earth ground (either the "Ground" wire in an electrical outlet or a cold water pipe in your home). That drastically increases the connection your antenna has with Earth ground and increases the current that you can harvest from literally every signal the antenna encounters. After that, you might try connecting a signal transformer between the earth connection and the circuit, but that starts to get into impedance matching and filtering.
Could you please explain what is the purpose of C1 and C2? The way I understand it is that alternating signals (that you also capture here) just pass through capacitors before they are rectified.
Hi, Can you please tell us the value of resistors and capacitors? How they change by change in frequency of expected signals? Also the length of antenna should be a function of signal frequency of interest, yes?
I made this with 1n4148 diodes. It does not work well. I am reading around 0.25v after several minutes of charging, and the antenna (about 10 feet of magnet wire) seems to do nothing. Whether attached or unattached the capacitors charge at the same rate.
This is the Joe Tate ambient power generator. The amount of power you get depends on how close the receiver is to the transmitter (inverse-square-law) and how much power the transmiter is using -- and the losses.
I see a good use for such low amount of energy. (for an example temperature sensors wich operates once a minute or 10 minutes) must use single charge to transmit data and go back to sleep. Btw what about scaling, 10 independent antennas =) or 100, 1000 would it absorb enough signal to make interference?
I just have question, if LED lights up from surrounding EMF / RF, dose it make weaker signal from WIFI? or Mobile Phone? Also I am wondering if it's possible to make the device which can suck those EMF radiation from mobile station?
A very nice design. It works because I made a similar one, but with different parts and LEDs. The voltage was very low with the reverse current. Didy I used: BYV27-200 DIODE 2A 200V 25ns VISHAY the capacitor connected to the antenna is 2x Capacitor 0.22uF [TNS-2TH] 0.22uF / MKP the capacitors connected at the bottom are: 2x 100uF 8X12 50V electrolytic capacitor. This set worked best on a 2m high copper wire, gave a voltage on a 1.10 volt meter. It seems to me that if you change the diodes to even faster ones, for example Schottky diodes and find a module duplicated several times, and add a properly made Transformer, we would get quite good energy. Ludic Science and what parts did you use? Can you specify exactly?
hello Ludic.... im impressed with your work here. can i ask you, what method did you used to build the electronic circuit on your "Energy harvesting: rectenna" project?? I am also doing some project here, same as you, rectenna... but, I'm a little lost now. I make RF energy harvest from 2,4 GHz. I choose "Dickson Multiplier" method for rectifier, but i didn't know what exactly the value of capacitance that i should pick for my prototype. Can I use your circuit design for my project to?? is it can possible work?? please give me some response, please...
May I ask, what are the values of your capacitors? Also, what about laying a single insulated wire beside (wrap it loosely around) a stretch of house wire that's constantly in use as an antenna?
The problem is that the energy recovered from the magnetic fields has no useful application because it is very small. But certainly the field produced under high voltage towers, that yes can supply much of a residence.I have done this test many years ago.
The question should be, "Can this be used as a power source for your Low power flasher?" It's all about the energy. The video shows the circuit is hardly lighting 3V LED (i=5mA), meaning 15mW maximum. It's very dim, so much less in reality. Unless you have a low power device that works with ~10mW, the answer is "no".
Great video, i was thinking about doing this but at higher densities, RF units can be expressed in uW/m^2, so there is a lot of energy we fail to harvest with just one antenna, my idea is to create an array of antennas to draw as much of the energy as possible. Also optimizing the Antennas lengths to maximize reception and higher gains. What do you think about antenna design for optimizing energy gains?
build a wifi cage around your entire apartment so none of your signals get out and none of your neighbors' get in, simply harvest all of those spare waves for power
I have a question: what happens if you replace either c1 or c2 with a tuner capacitor? Could you actually find a strong signal and get more of a charge quicker?
It's a small start, but can a rectifier be connected a a step up transformer designed to significantly increase its voltage output? Why is there a system design limitation in step up transformers today?
Dear Author Could you send scheme please. I didnt understand part of Diodes : 1N34, OA70 , 1N4148 ? Here 3 type of diodes did you used all of them for one scheme or you mean we can you 1N34 or OA70 or 1N4148? Thanks for attention.
I would like to see such a device but much scaled up, with power measurements and financial summary of the parts used. I think that multiple circuits could be arranged in a parallel connection to add their current.
Something interesting I saw on another channel: by using a cryal radio style tuner the other guy was able to find the best frequency and get higher efficiency, He got 125 mA at 4.8 V
Hey it's been awhile but I figured I'd write back again since I built my own version of the circuit and played with it a little bit. I was able to get about 10 milliwatts continuous on an LED however. I was measuring the output with an oscilloscope and noticed most of the power was coming from the wall. When I got away from the wall, the power dropped considerably.
Combine with large area flat plate collector on a pole, like N Tesla suggested, and joulethief circuit and or any tech to improve capture and charge and you can improve it somewhat.
Neat! Very interesting, and a surprisingly simple circuit. This could be a fun circuit for students to learn about RF and capacitors. Perhaps it's even enough to power a small microcontroller (attiny, pic... idle 24µA, active 190µA, 1µA in sleep/watchdog mode) and either log data or blink briefly every few minutes. Could you post aprox. values of the capacitors and what diodes you used? Thanks :-)
Sorry, I watched it on a small smartphone (3") and missed that :-) Diodes-> Any of the types mentioned? Germanium type as they work best with low voltages (I used them in an AM circuit years ago, I think they'll conduct at around 0.3v already)
ElectroBOOM brought us here!
The cir_cuit iz vuri simple
Yes
This is next level tech. thanks ElectroBOOM
Soo like that it charging it self mi cap -||-
Self charging capacitor
brilliant way of showing how all the rf around us radiates energy. Thanks for all your great tutorials and the time you put into your channel .Pete .....uk
Thanks for your comment!
Sweet! Finally a REAL "free energy" video (so to speak). Indeed there is energy around us, but not much we can harvest hehe.
It's not free energy as it still follow conservation of energy rules
@@UtkarshSingh-ru5ud It is free in a sense you don't have to pay bills.
@Dave Micolichek caught energy is insignificant. Much more is lost due wiring resistance.
@Dave Micolichek Hypothetically yes, but in reality - no
the simplest and most honest review of this circuit i have seen,and i have seen and read many.you are always honest ,that's why i subscribe,never any bs
thanks as always for you work and sharing freely.
Thanks for your comment
I loved doing this experiment. Tuning into a resonant frequency, like using a crystal radio, can increase the power. Also, the higher the antenna is into the sky, the greater the potential. Especially if you also use earth ground... just like a crystal radio. Keep up the great work my friend.
Thanks friend
There is a 300 volt difference between your feet(ground) and the top of your head. We have electricity around us always!
***** ??
Oh, I don't know if that is true *****
It's true. Richard Feynman won a nobel prize for that if I'm not mistaken. But for sure he discovered it and wrote a book about it. Check out rimstarorg videos on powering a corona motor with atmospheric electricity.
Bigger capactors may have a larger power-up time, but then can sustain a load longer. So you can change that. Plus a direct short to light the LED of course drains the LED fast. But if you were to use the Joule Thief circuit, you could permenantly light the LED with very little power. Its really an oscillator, and the LED is lit using high high-frequency voltage spikes, but the eyes sees the LED as bright, even though its pulsing (off/on/off/on).
0:14
@@islamahmed5421 The Joule thief circuit needs power, i.e. it won't even start, just volts aren't enough.
I thought that Electroboom didn't trust anyone with an accent!
Ironic
Note ... same as his
Thanks for the video. It was quite helpful.
A couple of things that would help are a longer, insulated antenna (not grounded), have the antenna in an open area. Also, if I'm not mistaken, a ground wire from between the electrolytic caps would help.
Will try the ground connection thanks!
A large antenna like a 100 foot long wire antenna will bring in usable current. Not a lot but enough to charge a small battery. If you live near high voltage power lines you can get power but stay off rights of ways because they belong to the power companies and we don't want to steal power. It's ok to harvest leaked electricity that's on your own property but never on rights of ways. 73
@@ronb6182 - Thanks again.
I was wondering about using 5 x 20 foot long antennas for the same (or very similar) result as 1 x 100 foot wire. Also, I was wondering about using an insulated stretch of aluminum foil. Oo, oo, I know! Aluminum foil wrapped around a tube with each layer insulated from the others by appropriately sized waxed paper as an antenna. Hmmm.
Also, would a ground wire between C3 and C4 be a help or a hindrance?
Old is Gold many Many thanks again
muy buen video me encanta la manera en la que haces la recoleccion de energia
Great video as usual!
Thank you for all the info!
Electroboom anyone?
also came from electroboom
Yes
Of course
BOOM
Yes
That's amazing!!!
Would a longer antenna or different antenna design cause any noticeable change in charging rate? If there is an increase in charging rate with a bigger antenna, it might be more useful.
Oh my god, that is so cool! Yeah it's little energy but I'm sure it could power a low-power microcontroller to light up an LED for a few milliseconds every minute for example, and that is cool!
It might be enough power to run MOS logic and a liquid crystal display, like a simple clock. I'd like to see it with a fractal antenna too. It is a way to evaluate antennae.
An eInk display could also be interesting (as it holds it state without power), at least for displaying data that does not change often.
Do you think this could be scaled up enough to extract hydrogen from water?
Pretty cool really. Could run a series of these for an increase in output.
Yes
I want it in my inbox too I will love to carried out the experiment for my students
What kind of modifications can be done to the circuit to make it work like an relative radiofrequency meter?
I have an inquiry. Hypothetically, say you modified your antenna to maximize electron harvest, and upgraded your capacitor sizes from electronic grade starter storage, and ending with either commercial grade 600+ volt capacitor, or homemade Leyden Jar modified for higher voltage storage, over longer duration of time, would this benefit the process?
using the same circuit i get 60v when i sit on the roof of my 2 story house situated on the top of a hill no more than 300 meters away from a small radio tower. I managed to charge a 2.5v 300farad supercapacitor to just under 2v in 5 days.
Dylan Davey How much does time does a led last if you connect it in circuit?
+Alexian Dorias . can't remember sorry. I did this experiment over 18months ago. I used the supercap to run a joule thief circuit driving the led. Lol maybe i should have written it down my results somewhere.
Supercapacitors have very high self discharge rate. I think simple aaa NiMH battery is better here
You got 60V open circuit. Obviously, the power available is VERY low.
DTG 99
Very neat little experiment :)
I will try this out tomorrow for fun and great video as always
Thanks
Ludic Science , did you use AC or DC capacitors?
Ludic Science could you provide me with all the details of the components?? I want to make this for a school project
is this enought to keep rtc clock from resetting when changing battery?
interesting!
Very Nice, let me tell you a true story.
Back in the 80's a guy built a transformer and circuitry and mounted on a tall pole, he then positioned it just below the standard power lines behind his house near the alley...... he was able to get substantial voltage and ran his house with it.... he got away with it for almost a year and then the power company took him to court and insisted he was stealing power ....he claimed ( and I agree ) that he was only turning the magnetic fields that were being emitted into free space into energy, he was utilizing wasted energy ..... unfortunately he lost the case ............ moral of the story ........... only run the pole at night so the power company doesn't see it .........
it is possible, if the transformer, is positioned near to the pole line transformer, you can tap the induction field, you get electricity.
Alien Physics moral of the story - electricity IS free..Tesla intended it to be but u know what they did to him, right? We are being raped by the power companies for sure.
Barbi Button I hope you are talking about his attempts to transfer power wirelessly. The claims that he tapped into "free energy" are bogus.
Wow, what's up with all the dots.
Of course he was stealing from the power company. He's loading the power line ever so slightly, and it changes the impedance of that line accordingly. The energy is not free. For the power company, they need to set precedence with the incident. They don't want to have to argue with every smartass that comes up with this idea, to "fool the system"
Alien Physics m
Perhaps if the wire (antenna) were coiled and placed in a vacuum tube, what would possible happen? And also increasing the number circuitry and antennas to up the voltage and capacitance... Worth looking into...
Hey on whic frequency basically this works? Like can I use a patch antenna working at some frequency like 2.4ghz or anything else
Which all diodes did you use? I mean at 00:23 ,you told you used 1N34, OA70, 1N4148 but you used 4 diodes in the circuit? So which one is the fourth diode?
Please help?
Any answer for this question?
What is the purpose of the two red non-polarized capacitors?
What purpose do the red capacitors have?
and why to you need two electrolytcapacitors instead of 1 next to the rectifier?
I actually really like the circuit.
So... 2.5 volts off of a very small antenna is actually pretty good. Especially if you consider that the voltage drop across your full bridge rectifier is around 1 volt; this is actually pulling around 4 volts out of the air.
If you really want to increase the efficiency of this circuit, take a straight wire connection after the AC caps, but before the rectifier, and connect it to earth ground (either the "Ground" wire in an electrical outlet or a cold water pipe in your home).
That drastically increases the connection your antenna has with Earth ground and increases the current that you can harvest from literally every signal the antenna encounters.
After that, you might try connecting a signal transformer between the earth connection and the circuit, but that starts to get into impedance matching and filtering.
Can u build me one of these circuits I'll pay you
at what frequency receiving signal
224k and 1n4148 what frequency (90-100mhz) ?
Could you please explain what is the purpose of C1 and C2? The way I understand it is that alternating signals (that you also capture here) just pass through capacitors before they are rectified.
one captures the positive swing from the antenna and the other captures the negative swing.
Hi,
Can you please tell us the value of resistors and capacitors? How they change by change in frequency of expected signals? Also the length of antenna should be a function of signal frequency of interest, yes?
I made this with 1n4148 diodes. It does not work well. I am reading around 0.25v after several minutes of charging, and the antenna (about 10 feet of magnet wire) seems to do nothing. Whether attached or unattached the capacitors charge at the same rate.
This is the Joe Tate ambient power generator. The amount of power you get depends on how close the receiver is to the transmitter (inverse-square-law) and how much power the transmiter is using -- and the losses.
it's a cool circuit I connected the dish antenna of my TV and It harvested a lot of energy
Approximately how much Volts ?
I see a good use for such low amount of energy. (for an example temperature sensors wich operates once a minute or 10 minutes) must use single charge to transmit data and go back to sleep. Btw what about scaling, 10 independent antennas =) or 100, 1000 would it absorb enough signal to make interference?
Well the idea is good... have you tried with low-loss circuit.Component models need to have great performance such as low internal loss resistance
what is that component on the led "leg" and what is its purpose? Thanks for the great video!
good idea man.
I just have question, if LED lights up from surrounding EMF / RF, dose it make weaker signal from WIFI? or Mobile Phone? Also I am wondering if it's possible to make the device which can suck those EMF radiation from mobile station?
A very nice design. It works because I made a similar one, but with different parts and LEDs. The voltage was very low with the reverse current. Didy I used: BYV27-200 DIODE 2A 200V 25ns VISHAY the capacitor connected to the antenna is 2x Capacitor 0.22uF [TNS-2TH] 0.22uF / MKP the capacitors connected at the bottom are: 2x 100uF 8X12 50V electrolytic capacitor. This set worked best on a 2m high copper wire, gave a voltage on a 1.10 volt meter. It seems to me that if you change the diodes to even faster ones, for example Schottky diodes and find a module duplicated several times, and add a properly made Transformer, we would get quite good energy. Ludic Science and what parts did you use? Can you specify exactly?
No
@@Bizzybugproductions It's very cool that you can.
@@Grisza010 yes
Use germanium diodes
Could you theoretically make a bunch of these, stack them, and power the light longer? Would you need another antenna ?
can we increase the storage by using more powerful capacitors?
What about getting a fixed voltage as output? How can we get a fixed output, and which is nearly 5V ?
Nice work. how can i measure strength of FM stations only. Can i use RC filter or not. Also tell me where to put filter components.
hello Ludic.... im impressed with your work here. can i ask you, what method did you used to build the electronic circuit on your "Energy harvesting: rectenna" project?? I am also doing some project here, same as you, rectenna... but, I'm a little lost now. I make RF energy harvest from 2,4 GHz. I choose "Dickson Multiplier" method for rectifier, but i didn't know what exactly the value of capacitance that i should pick for my prototype. Can I use your circuit design for my project to?? is it can possible work?? please give me some response, please...
Have you got idea for that rectenna bro i.e rectenna
what about increasing the antenna area by using a metal plate instead a simple wire?
May I ask, what are the values of your capacitors?
Also, what about laying a single insulated wire beside (wrap it loosely around) a stretch of house wire that's constantly in use as an antenna?
this design does work I found it back in the early nineties in a magazine called Popular Electronics I made my own and posted a vid
YEAR OF THE ROOSTER I also made my own and made a video.
@@stonecold7945 ......did yours worked?
skhumbuzo cele yes
But mine worked
Is it possible to maximize the output voltage by Using high rating semiconductors in the circuit?
The problem is that the energy recovered from the magnetic fields has no useful application because it is very small. But certainly the field produced under high voltage towers, that yes can supply much of a residence.I have done this test many years ago.
Wonderful explanation! Just a question. Can this be used as a voltage source for your Low voltage flasher?
The question should be, "Can this be used as a power source for your Low power flasher?" It's all about the energy. The video shows the circuit is hardly lighting 3V LED (i=5mA), meaning 15mW maximum. It's very dim, so much less in reality.
Unless you have a low power device that works with ~10mW, the answer is "no".
Hi, I am new to this stuff and was wondering if you could give me a list of items needed to build this? I would greatly appreciate it.
Can we connect this to ltc3108 to get voltage around ~ 3 - 4?
Nice project
what are those thing being installed in that diagram sir?
Can you use the joule thief circuit to increase the output voltage
Great video, i was thinking about doing this but at higher densities, RF units can be expressed in uW/m^2, so there is a lot of energy we fail to harvest with just one antenna, my idea is to create an array of antennas to draw as much of the energy as possible. Also optimizing the Antennas lengths to maximize reception and higher gains. What do you think about antenna design for optimizing energy gains?
I have the same idea.
build a wifi cage around your entire apartment so none of your signals get out and none of your neighbors' get in, simply harvest all of those spare waves for power
what if you hooked this up to a baseball cage? I'm not sure, but I'd think it would have to not be grounded to pick up voltage.
Is there anyway to use a battery for the electricity created? like connect this system to a charge controller the to a battery
Thanks
I have a question: what happens if you replace either c1 or c2 with a tuner capacitor? Could you actually find a strong signal and get more of a charge quicker?
+BKBrunelle74 yes that will help
Could this replace solar pannels inside calculators?
How can I contact you? I'd like to ask you about a project. Thank you.
Which diode you have used
Which diode you suggest using
I think this would work nicely with some supercapacitors and a Joule Thief flasher circuit.
is there a need of rf generator placed at some distance from antenna
Hi, I have a science project due on Monday and it requires your circuit. Can you tell us how you’d made it?
i wonder what you could power with this? a watch?
cool!
is that diode bridge circuit?
It's a small start, but can a rectifier be connected a a step up transformer designed to significantly increase its voltage output? Why is there a system design limitation in step up transformers today?
Each diode there has a voltage drop. How could this possibly harvest any useful power at all? Can it run a red LED?
Hey my friend. What are the values of the (what look like high voltage ceramics) capacitors and the 2 electrolytic capacitors? Thanks!
0.22uf 100v for c1 and c2, and 100uf 16v for c3 and c4. Its right in the video man.
What are the diodes that you have used? General purpose or schottky or something still different?
schotky
What are those red/brown things. Left in the circuit.
Dear Author Could you send scheme please. I didnt understand part of Diodes : 1N34, OA70 , 1N4148 ? Here 3 type of diodes did you used all of them for one scheme or you mean we can you 1N34 or OA70 or 1N4148? Thanks for attention.
you are so coool!
How you can connect to antenna in this Rectenna ?
Can you explain please ?
Can anyone tell me the power ratings of all the capacitors and diodes?
I would like to see such a device but much scaled up, with power measurements and financial summary of the parts used.
I think that multiple circuits could be arranged in a parallel connection to add their current.
How about using stronger capacitors like super capacitors???will it work
Something interesting I saw on another channel: by using a cryal radio style tuner the other guy was able to find the best frequency and get higher efficiency, He got 125 mA at 4.8 V
That is impressive to harvest that amount of energy, you could even drive a PM speaker at that point.
Hey it's been awhile but I figured I'd write back again since I built my own version of the circuit and played with it a little bit. I was able to get about 10 milliwatts continuous on an LED however. I was measuring the output with an oscilloscope and noticed most of the power was coming from the wall.
When I got away from the wall, the power dropped considerably.
could this be one of those old cellphone stickers that blink when you get a message/call?
such a 'kit' you can buy on Ebay to solder yourself but they only use the GSM frequency at around 900 MHz
Can anyone tell what diodes are being used he had names only three i.e. 1n34,oa70 and 1n4148
the andtena needs ground to work better and something else inductor is missing or no need ?
Would that work by a permanent magnet?
Combine with large area flat plate collector on a pole, like N Tesla suggested,
and joulethief circuit and or any tech to improve capture and charge and you
can improve it somewhat.
The description of C1,c2 and c3,c4 is mixed up at around 0:15, isn't it?
Well, it's an absurdly low amount of current, but it's possible to do some pretty cool things with it already.
Can the amount of output be increased if we will add a DC converter?
How much voltage can it produce?
How much wattage can it produce?
TY...
you can multiple it to 100 by using 100 antenna so you will have the output of 220V + 300W-600W-1200W
how much current? is it possible to drive a Joule thief? maybe with a Supercap?!
machaya bhai tune to
Have you measured the power output. How long the atena must be to get 1mW?
FOr which range of frequencies does it work?
which antenna is used in this circuit
What is the use of the red capacitors?
And what kind of LED do you use?
i think the red capacitators are to make sure that the voltage can pass trough the internal resistance of the diodes
@@ovencore2549 Thanks bro now I can finally resume my project
how does that circuit works,pls explain
Neat!
Very interesting, and a surprisingly simple circuit.
This could be a fun circuit for students to learn about RF and capacitors.
Perhaps it's even enough to power a small microcontroller (attiny, pic... idle 24µA, active 190µA, 1µA in sleep/watchdog mode) and either log data or blink briefly every few minutes.
Could you post aprox. values of the capacitors and what diodes you used?
Thanks :-)
Thanks yes it is a good circuit for learning. The values of the components I used are shown below the schematic.
Sorry, I watched it on a small smartphone (3") and missed that :-)
Diodes-> Any of the types mentioned? Germanium type as they work best with low voltages (I used them in an AM circuit years ago, I think they'll conduct at around 0.3v already)
Hello It would be nice if it was possible to build a blinking led powered by those radio waves
it is in fact possible!
Add a joule thief circuit?.. Maybe