Two LEDs In Parallel Can Rectify Radio Waves And Light Up!
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- Опубліковано 25 сер 2024
- In a previous video I demonstrated how you can light up an LED with a tuned antenna, and a reverse biased diode in parallel with your LED,, but I didn't realize you could do the same thing using two ordinary LEDs. The LED circuit was not nearly as sensitive as my design which used the 1SS86 diode, and could not respond to WiFi signals from my router, but it did work on my 200 food long wire antenna, thanks to a close by radio station and my two meter walkie talkie was also able to light up my LEDs, my transmitter antenna had to be real close to the antenna on my LEDs. Here is a link to the first video if you want more information on the diode and LED circuit. • 2 Dollar Radiation Det... .
Ayo this has got to be one of the easiest shortwave morse code receiver you will ever see
Takes me back to early 2000's cell phone accessories.
Aahh so that's how they worked! I wanted to keep my old phone with that light up antenna
Geez, if I stumbled upon your channel when i was younger...Id be trying to replicate all your projects.
This is all soo cool! Thank you!
I appreciate your comment.
Me too ❤
This is so cool. I can't believe I've never known this. I work on cell phone tower equipment and have spare LEDs at home. I wonder if it can pick up RF in the cellular communications bands like 600 - 2500 MHz. I was on a rooftop close to some antennas today. I'll have to remember to make one of these and take it to work when I'm near some more live antennas.
Mine lights up next to the antenna on my cell phone. This video has far more details on the LED diode combination for picking up RF energy. Your antennas need to be resonant for this to work well. ua-cam.com/video/vHVmJ5lD9jc/v-deo.html
I'm in a automotive technology class and one of the things that we have to do is create various breadboards, I'll have to give this a go
I'd suggest the above circuit using the diode. It works far better, and at a greater distance from the antenna. Here is an additional video you may find of interest. ua-cam.com/video/vHVmJ5lD9jc/v-deo.html
@@GrantsPassTVRepair thank you as well
Also watch out for the breadboard changing the resonance frequency of your circuit if you go for high frequencys
Different color LED's have different forward "on" voltages. I've found green LED'S light first and last. I had a largely discharged coin cell battery and placed 3 LED'S in "on" configuration to see which would stay on the longest. Green won, hands down and stayed lit for hours, dim, but still lit many hours later.
I remember hearing the green LEDs turned on at a lower voltage, but thanks for the confirmation..
Low energy red led's have the lowest forward voltage.
Absolutely outstanding, a fan from the first video, thank you for your knowledge and sharing your knowledge
Those LEDs are connected in series, not parallel. I also live in Oregon. I saw your video about solar panel and cordless phone amplifier and instantly binge-watched all of your videos. You are one of the most prolific independent engineers I have ever had the privilege to observe. I have learned more from you on this day than a full year of courses in AC and digital electronics. Great respect and admiration. I wonder if you could use a microwave to amplify wifi....
😂 when you only have two devices for reference, it's both.
Once you include the antenna and ground, the rectifier is in series with the antenna and ground. Which make the 2 diodes in parallel.
@@waroftheworlds2008
still its considered parallel as in series one of the poles will be open
I used this configuration in a small power am transmitter by placing it in series with the antenna.
I then tuned the antenna until both were the same brightness.
Sounds like you came up with an illuminated SWR indicator, but are you sure your tuning technique is best for maximum output? It would be nice to use a field strength meter, to verify if lighting up both LEDs to the same brightness is really a good idea.
@@GrantsPassTVRepair It was the only tool I knew at the time that would work without waiting to buy an SWR and anyhow it was a two transistor project on a protoboard, just to see if it could be done.
You should have been my, radio principles, lecturer.
This is absolutely amazing i just love technology and everything we can learn from it i mean seriously how is this any different than magic i mean sure with a simple understanding of electronics and physics it makes sense that this should work but if you strip all that back and just look at these two bulbs that are seemingly lighting up from nothing that is like magic to me at least thanks for this!
I share that sentiment.
Any sufficiently advanced technology will appear indistinguishable from magic to the uninitiated.
My Soviet Germanium Diodes Works GUUUD WITH THIS AND THEY ARE SUPERBRIGHT
This sounds like a weird and uncommon but useful survival tip. If you have those few items maybe it will help you detect when you are closer to civilization, or a cell service without turning on a nearly dead phone alot.
Yes, but you would need to be fairly close to the transmitter for the LED to light up, and my antenna is about 200 feet long.
Ty for this information ❤
It's amazing what can be done with diodes
Dave, please consider a video on properly stepping down the 50VDC on a telephone pair to a useable 5VDC for charging.
I.ll consider that. Thanks for the suggestion.
I thought 50V was only on ring signal?
@@driverjamescopeland You might be right about that, but I was able to get my phones to ring with a little less.
@@GrantsPassTVRepair - yeah... the static feed is extremely low powered.
@@driverjamescopeland ...I measure the voltage as always present.
Could you please do a video of this, attaching a variable capacitor, in series and parallel, at the same time, with this circuit?
Magic
I need to try this.
Led means light emitting diode
How long the Antenna nedds to be ?
Outstanding
Could this captured energy charge a capacitor?
That was my first thought as well.
if it could, what would you do with it?
@@bruhmomento4197
Utilize it, what else?
Still wondering about that 3/4wave length for 60hz😂🎉..I'm by power lines that hum all the time, in the rain it becomes quite loud. Tune in ,turn on and keep it to yourself
Have you tested the LEDs to see if you can pick up any photoacoustic effects?
see Tate Ambient Power Module circuit
Is there any way that you can make 1N5711 more sensetive?
What voltage and amp ratings are the LEDs?
How does this circuit works?
Take a fluorescent tube out to the tower and it will light up, no wiring needed.
LC resonator ftw
Can you connect a bunch of them in series
Does it matter if the propagating signal is UHF, VHF or HF?
Would a signal diode (the type you always see in radios, the glass type that look like zeners) would that work? With a 0.2xxvolt diode drop??
Many diodes may may work when the signals are strong, such as you see with two ordinary LEDs, but they aren't very sensitive. Ideally you should use a diode that's designed to for higher frequencies, such as the 1SS86, or the 1N5711 which also works, but not as well, A small signal like the 1N914 is not ideal, but if your signals are strong, Here is a link to a previous video that has more detail on this . ua-cam.com/video/vHVmJ5lD9jc/v-deo.html
I soldered some LEDs together to try make this with ZD0190 white LEDs with each prong of the dipole being 31.05mm long, however it didn’t light up even when I put it next to the antenna on my 2.4Ghz 1w radio controller for my drone. Any ideas why it’s not working? Too high of a knee voltage on the diode? I’ll try it with my microwave oven and see if the higher power makes a difference. Cheers
Yes. The sensitivity is very poor using just LEDs AS I mentioned. Try using one LED and a 1SS86 diode.
Could you use this energy to trickle charge small devices? I mean, it's lighting an LED from just airwaves, surely you could direct that energy elsewhere.
It would only charge very, very slowly, and you'd have to set it close to your WiFi router. In which case, it is simpler to just use a charger.
Whats the difference between your diode and say a normal m7 or 1n4007 or anything i have laying around
The 1N4007 is too slow, it won't respond well to RF. Takes too long to turn off, so at RF it just looks like a low resistance in both directions. In fact, many ham radio operators build projects using 1N4007 diodes as variable attenuators using this effect.
Every Diode is actually a light emitting diode.
Very true, the lower the forward voltage drop, the lower the frequency. So a 1N914 silicon diode will light in infrared. You may even be able to see it on your phone camera if you turn the room lights off.
do you want to know why
Id like to see how this is done. I live very close to a 800khz am station and would like to learn more.
800KHZ ?
Not Mhz ?
@@RamyFal 800khz AM
Is this why my led kitchen light glows when the light is off?
More likely to be that the wires going to your light are running along other wires with power, so they both end up magnetically coupled and some voltage is induced on the other wire. It ain't much, but LEDs can exhibit a faint glow even with very little current
most likely nope.
You can be sure by cutting off the main 2 poles breaker.
If it off now then no, it is not related this.
As someone said it will be related to the wires in their tube being so close for a long enough length so it acts as a capacitor which conducts a bit in AC in series.
I wonder if putting a transmitter in my house would power leds in my backyard wireless
It loses power very quickly with distance, so you'd need a very powerful transmitter and the LEDs still won't be very bright.
Are you a infantry signaler
Is it possible to pull 5V out of the air like this?
Getting voltage is easy, but to get enough current to use it for anything would require you to be right up close to the transmitter or require a transmitter so powerful it cooks all the locals and wildlife.
We call that anti-parallel.
Ok, so do both leds light up because it's ac? Because what I'm thinking is one of those diodes is backwards.
Yes the LEDs are reverse biased, but they aren't very sensitive in comparison to what I showed in this other video you may enjoy watching. ua-cam.com/video/vHVmJ5lD9jc/v-deo.html
Imagine, this guy with a ultra sensitive depth meter ...
Isn't this all what Tesla was talking about back in a day? How you can harness the energy from the Earth.
Watching a guy touch hotdogs to an AM radio tower and witnessing radio coming through the hotdogs made me confirm one fact. Flesh, rocks, and most matter is merely comprised of crystalline structures that operate like a detector. Tesla was right in regards to his quote of crystals being like living beings comprised of many different frequencies.
How do I turn this to charge a battery for free😏
Ever make a radio receiver with a pencil and a razor blade?
Oh so you can provide free electricity to an entire town with a big tower and a signal wow why didn't anyone think of this
U made me google what I know is wired in Parallel 😂😂 lol but seriously the information ur telling is kinda not supposed to be told