Hello friends you hv also heard about tesla who was great inventor.i m going to make his device for collecting energy from air.for make this device you will need these things....
1. 4 diodes
2. a 100uf ,50v capacitor
3. aluminum foil
4. piece of card board
5. some wires

Step 1: Antenna Making

Picture of Antenna Making

Get a piece of cardboard and take aluminum foil the size of ur cardboard and staple foil on cardboard then hang it in room or go outdoor and put it on a pole at least 9-10 feet off the ground.Now take a wire and connect its one end to anteena


its is easy to make if u can go outdoor then take a metal rod and take another wire and connect one end of wire to rod and stick rod in the ground.



make circuit according to give figure.i make my circuit on bread board.You can use any type of capacitor as high uf you can,i used 100uf,50v capacitor.after completing your circuit as shown in figure  get 1-2 volts in 10-15 min.i got 13.56 volts in 4 charging rate was very slow bcz i placed my antenna in my room only few centimeters above the ground.i am able to run a LED for 40-50 sec.



as we know in normal days air content free positive charge and ground content negative charge.when we put antenna or any metallic object in air it gains positive this project we are making aluminum foil positive and metal rod negative.when we connect a capacitor b\w them capacitor get charged.


bob491 (author)2017-11-05

this uses radio waves . Natural or artificial it doesn't matter. If it collected dc charges from the air it wouldn't need a rectifier. Radio waves create ac between an antenna and a ground connection, so it needs a rectifier. It is a cool project but if you tried to power your house with it you'd get in trouble for stealing everybody's radio signals.

carloss401 (author)2017-11-01

I have 100 uf 400vlt capacity is it ok ?

AyoolaOlu (author)2017-08-06

pls am currently working on this device as a school project, can anyone pls send me a write up for this? pls and pls

carloss401 (author)AyoolaOlu2017-10-30

Did you finish your project .

GaleW1 (author)2015-12-17

Those that think that this works by picking up radio waves, seem to forget that in 1901 when Telsa patiented the device, there were no radio waves being transmitted. At that time to have a patient approved, a working device had to be presented to the patient examiner so it worked then with no radio waves.

DjangoT (author)GaleW12016-03-20

I am sorry, but radio waves were there already at the very beginning of the universe !
We are completely surrounded by radio waves. Light, visible or not, is also a radio wave !

DorothyB46 (author)DjangoT2017-08-01

True, but I am talking about man produced radio waves, many seem to believe that this is what is powering the device, I was only pointing out that this is not the case. Maybe I didn't make myself clear enough.

MatthewS427 (author)DjangoT2017-02-24

No light is not a radio wave. Light is a wave yes but radio waves are much higher frequency. They are on another part of the electromagnetic spectrum.

Light is electromagnetic wave with much higher frequency than radio waves

(light is in THz range, where radio waves are in kHz-MHz range)

pranjal2 (author)GaleW12017-08-01

we are also surrounded by cosmic rays

soumitraseth (author)2017-02-23

I think it`s Better Tech ??? I try it.

dcipher (author)2017-01-01

What is the purpose of the diodes? Could you not just connect the antennae to once side of the capacitor and grouond to the other?

prayag nao (author)dcipher2017-01-19

Diode converts AC into DC

soumitraseth (author)2016-09-15



Sir Norman (author)soumitraseth2016-12-03

Good Question. Can you use the 1N4007 diodes AND a larger cap?

Does anyone have a schematic for a pulse charger, once the cap has reached a preset voltage it would discharge into a charging circuit?

Sir Norman

bud man (author)2016-11-14

Hi, I made your circuit and put it up on 11-13-16. 10 ft pvc pole and a small part from an old tv ant. that I had. After 20 min. voltage went from o vdc to.374 vdc. After 90 min. the voltage went to .763 vdc. Today I checked itat 7:05 am it was at 6.26 vdc. At 11:am it was at4.58 vdc . Do you possible know why this happened. Its now 1:pm and its at 5.27 vdc. Thanks bud man

JasonS36 (author)2016-07-01

can i use the steel roof of my house as an ariel and the ground post as an earth to make a kick-arse battery charger that will power the LED lighting of my house at night?

tots.supertots (author)2016-04-03

Hi! Just want to ask what would be the effect on the circuitry if I use silicon diodes?instead of germanium diodes? Thanks in advance.

No problem you can use

TravisM18 (author)2015-12-04 Looking at pages 12 and 13 of chapter seven shows that the circuits can be stacked to make enough power for recharging batteries.

alex1242356 (author)2015-11-27

and another question,the positive charges in the air are standing to attract them?

prayag nao (author)alex12423562015-11-27

From Negative charges of ground.

alex1242356 (author)2015-11-27

can you improve this device?

alex1242356 (author)2015-11-25

hello,can you connect a battery to the capacitor and charge it?

prayag nao (author)alex12423562015-11-25

Yes, but charge collected so less that you can charge for few second.

alex1242356 (author)prayag nao2015-11-27

thx for the answer

alex1242356 (author)2015-11-27

a coil or what?

alex1242356 (author)2015-11-27

yes but,if i take it to a larger scale like getting it on a pillar and make it a big collecting panel?

holymohsen (author)2015-09-10

Please write more about size and construction of the alminum foil thanks

KushankS (author)2015-08-11

Can i use 1N4148 zener diodes and 4700uF cap?

prayag nao (author)KushankS2015-08-11

Yes u can

KushankS (author)prayag nao2015-08-11

Tell me if i can use a 4700uF capacitor?

KushankS (author)2015-08-11

Can i use IN4148 zener diodes?

KushankS (author)2015-08-11

Can i use IN4148 zener diodes and a 4700uF cap

KushankS (author)2015-08-11

Please reply fast i have to make this for my school project

KushankS (author)2015-08-11

Please reply fast i have to make this for my school project

KushankS (author)2015-08-11

Can i use IN4148 zener diodes and a 4700uF cap??

KushankS (author)2015-08-11

can i use IN4148 zener diodes??

Sam YeH (author)2015-06-26

By the way ANTENNA can not collect pos only charges. It collecting radio waves. Which would never charge a capacitor more than 1/3 of a volt. The ANTENNA would need paper or card board backing to collect pos charges one direction is needed the ground would pull the pos charges into your capacitor. Same results very low voltage. Most of the time the ground will drain anything u collect. A switch can stop equalizing effecrs.

Sam YeH (author)2015-06-26

Ur making one mistake. U can't collect enough electricity from sources like the sun or the air. Because as the pos charges get closer to the neq charged earth the pos are canceled out. This is why solar will never get better than 18% the panels slow the pos charges but can not absorb do to the speed of low charges. It's faster than light. U can't even absorb light at higher rates. The earth is collecting most of the free energy we seek. Fossil fuels work better as converting it to energy is 35%.

We need to find more efficiently in the conversion of fuels. But we will always complete with the earth for electric energy no matter what the source
Did u know it's more efficient to covert wind than solar. Also water converting is better than wind or solar combined. It the weight.
100 mph wind or 100 mph wall of water. Which one does more work or damage.

aden.limbong (author)2014-12-21

just a suggst scheme

prayag nao (author)aden.limbong2015-05-04


J-dc (author)aden.limbong2015-01-21


You mean a coil between the collector and the bridge rectifier? Why?

Respectfully of course.

J-dc (author)2015-01-21

I like the idea of Germanium diodes, considering they conduct at lower voltages than a silicon diode.

omnistructable (author)2014-11-23

@ JesusGeek English is not all Instructable makers' first language. Please be friendly.

mohammadsalem94 (author)2014-05-26

are you make it..?? plz give the picture of your project

zo manloon (author)2014-02-23

fish_dude (author)2013-12-08

how do you ground it if you are inside or do you have to be outside

prayag nao (author)fish_dude2013-12-08

use ur home's ground connection,u can see a largest hole in ur electric plug,use that

fish_dude (author)prayag nao2013-12-14

ok thanks

About This Instructable




Bio: Hello My name is Prayag Nao.I am a tech enthusiastic person who does not follow reality,instead I create reality.I am sharing some ... More »
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