Introduction: Wireless CFLs (using Wireless Electricity)

Picture of Wireless CFLs (using Wireless Electricity)


My most popular instructable Wireless electricity transmission gave me 118607 views with 161 comments currently and also it was a prize winner in soldering challenge.Thank you for your support!! :-).In my comments I could see many giving me suggestions for increasing voltage of it to make it more useful and attractive!This is what I had made on their demand !! Thank you friends!! :-) This is almost of the same size as it was of earlier one but it can even light up CFLs and fluorescent tubes!!!!!!!This is the most amazing thing about this device and the total setup is not hardly larger than our smartwatch dial!! It is tiny and compact and is running on 9 volts battery!!See the next steps for knowing the procedure to make it!!See it in action :-

And at night :-

Step 1: Range and Actual Origin

Picture of Range and Actual Origin

Its range is about 1*1/2 inches and the original version of tesla coil but the main feature of this is that it doesn't run on thousands of volts instead only one 9 volts.See from near :-

Step 2: Things Required

Picture of Things Required

We need :-

  1. 2N2222A transistor (NPN){alternates are 2N2222 or 2N3904}
  2. 22 kilo ohm resistor
  3. A piece of perfboard
  4. Solder
  5. Relay (only for 36-42 # wire)
  6. Small sketch pens
  7. Tape dispenser with roll
  8. Connecting wires
  9. L.E.D
  10. 18 # solid copper wire
  11. 9 volt battery cap or connector

Tools :-

  1. Nipper
  2. Soldering iron
  3. Hot glue gun (optional)
  4. Enclosure (optional)

Step 3: Crack Open the Relay

Picture of Crack Open the Relay

Just break up any relay and get a roll of thin fine copper wire from inside,you can also use any other source like transformers and misc.Then carefully cut open one end of wire and start rolling it on small cylindrical shaped object with diameter not more than a cm.

Step 4: Coiling Od Secondary Coil

Picture of Coiling Od Secondary Coil

Coil the fine copper wire from relay on a thin sketch pen tube,make sure that the wire doesn't over lap.Overlapping may not affect the working but it makes it more impressive.Coil about 250-400 turns of it and join the ends to prevent uncoiling and also remove the insulation from the wire,use lighter for this task or use sandpaper to rub off the insulation.This was the most complicated part of this project !!

Step 5: Circuit

Picture of Circuit

Check out this circuit diagram which I got from google images and website was electronics.stackexchange.Check out the pinout of 2N2222A transistor firstly,First of all insert all the components in the perfboard at a justified distance and connect base of transistor to 22 kilo ohm resistor.Solder one L.E.D with negative terminal connected to base of transistor and positive terminal to emitter of transistor also connect the base end of secondary coil to base of transistor.

Step 6: Soldering

Picture of Soldering

Solder every connection with the help of circuit diagram and also make connections for power supply.Connect the positive terminal of battery to 22 kilo ohm resistor and negative terminal to positive terminal of L.E.D.

Step 7: Coiling Primary Coil

Picture of Coiling Primary Coil

Take insulated 18 # solid copper wire and roll around 3 turns of this wire around the sketch pen tube and then using connecting wire join the upper end of coil to 22 kilo ohm resistor (primary coil's upper end) and lower end to collector of transistor (Primary coil's lower end).

Step 8: Final Touch and Testing

Picture of Final Touch and Testing

Now solder all the components if left I think the collector connection is left for soldering!! After soldering throw some hot glue on the circuit board if you want to prevent any breakage of connections.Just press the battery in its connector and bring near and CFL or fluorescent tube near the sketch pen tube and see if it is working!!!!!!!!

If everything is correctly connected then it should work but if it fails then no need to be sad,see the connections again and test again.If again it doesn't work then you can ask me in comments below so that I can find some possible reason for its failure!!

Step 9: Done!

Picture of Done!

I think you've enjoyed my tutorial and if so then please vote it! If you have any problems then you can ask me in comments below! Any suggestions!! You can ask me right below this step!!This is a simpler and smaller version of original tesla coil simplified using the usage of transistor!! !!!!!!!PLEASE DON'T TOUCH THE BARE END OF SECONDARY COIL ,IT MAY GIVE A LITTLE SHOCK AND GIVE OUT SMELL OF BURNING!!!!!

Please vote if you like!!

Thank you !

Good bye!!


Dr.M3 (author)2016-09-17

hey this is basically a slayer exciter, there are many tutorials on the internet on how to Make them. he should have used better components though. I know I use a tip31c trans npn and a 47k ohm res and 2 uf4007 diodes. along with primary and secondary coils. you should also use a cinductive metal ball at the tip for better results.

ARAVINDCHOWDARY (author)2016-05-18

its trash dosent work

dont waste your time reading it

VivekS99 (author)2016-04-16

hey buddy i tried it but didnt work

what to do

wmada1 (author)2016-01-03

i cant get it to work

Hi, thanks for commenting you can post some pictures of your circuit that you made!! I think you might have overlapped coiling excessively or the transistor pins might be wrong!! Pleaae recheck everything!! Thanx :-)

SHOE0007 (author)2015-12-11

What kind of Inductance would your coil emit and would a 710 turning coil damage equipment? PLEASE ANSWER ME SOON.


It is mutual induction and 710 turns may pr may not work it will not damage cfl in any case.:-)Best of luck!!

msingh74 (author)2015-12-21

Hi friend I have also made mine tesla coil earlier , and it works great.

Oh! that's nice!! :-)

awesomevicky (author)2015-12-12

amazing project...I'll try to make it.

Thank you!! Best Of luck!!

Dushyanta (author)2015-12-02

You would have named this instructable as "How to make a tesla coil".

Yonatan24 (author)Dushyanta 2015-12-03

A lot of people have made a "Tesla Coil" 'Ible = Less views...

Correct!! :-)

keowee (author)2015-12-03

A few years ago, Dept of Energy had a huge (maybe 100 ft in length) CFL bulb lightening the bottom of their building. At one end of this bulb was a small microwave box which excited this CFL. Was supposed to save energy and burn for a long time. As I remember it didn't burn very long before it stopped.

Dept of Energy

jck61 (author)keowee2015-12-10

That sounds like it was a sulfur vapor lamp connected to a light tube to distribute the intense light it produced. It was supposed to be very efficient but only practical on a large scale. The Air and Space Museum had about half a dozen up near the ceiling. Unfortunately, they didn't last as long as expected, and the manufacturer went out of business.

jimmie.c.boswell (author)keowee2015-12-08

well if you lose the partial vacuum inside of the bulb, it would not work. otherwise the microwave, could keep it lit as long as the microwave did not fail.

you can even use tesla coils, or neon transformers to run burnt out fluorescent bulbs.

BennyP5 (author)2015-12-05


Joined a bit in advance just to ask this question:
If i would like to make a setup with a stronger effect, I assume that means a larger diameter/longer coil/more turns? Also is this a viable option as a night light, or should I concider making such a night light motion sensing?

jimmie.c.boswell (author)BennyP52015-12-08

well there are all kinds of ways, to increase the output and effect the a tesla coil. like winding the coil, on a ferrite core instead of an air coil. making sure, your ferrite is optimal for the frequency. which would make, the size if the coil needed smaller with better coupling.

increase the secondary, turns ratio and using slightly heaver tubing or litz wire for the primary autotransformer to increase amps and voltage in the primary. unless you are using a, isolated tesla coil.

increase the frequency, of the coil. frequency has an effect on distance the coil can arc, or radiate.

and another less likely for the layman, would be a super-conductor tesla coil. which i do not believe, has been researched as of today. but it would be, a new novel neet idea.

BennyP5 (author)jimmie.c.boswell2015-12-09

With increasing the turnratio, you mean secondary:primary right? I happening to have a pretty heavy-duty transformer on hand, so maby thats my approach. My plan is to hide the coil and make a "magic" lamp so it needs to stay relatively small, and I dont have ferrite on hand :D on the other hand, the transformer I have is impossible to hide in the object I had in mind.....

jimmie.c.boswell (author)BennyP52015-12-09

essencially yes, increasing the secondary to primary turns ratio. and/or increasing current in the primary.

but you would not need a large ferrite transformer for a single lamp. not even as large as, in an old tv or radio ferrite tuned coil.

You can check out twotowers website for making large tesla coil!!

spark master (author)2015-12-09

Hi nice build what is the url for tworowers?


ziggybass (author)2015-12-03

These are all great and way over my head. I struggle with caps and pickups (guitar). What we need it a lamp that will work with the radiated energy around us! Why make something that will light a bulb when what we need is a bulb that will lite leaning against my computer. Clipped to my lap top. clipped to my guitar! We have the energy already. wew need the bulb or tube to use that radiated radiated energy. Thanks for beimng patient. No disrespect intended!

Electrospark (author)ziggybass2015-12-08

Thermoelectric Peltier devices can generate electricity by cooling one side and warming the other. Connecting that low voltage output to a Joule Thief or high efficiency DC-DC boost converter might give you quite some bright light as newer LED's are getting more and more energy efficient.

gungajin (author)ziggybass2015-12-05

Right, but without experimenting we'll never get there.

Yonatan24 (author)2015-12-03

Could it, By any chance, Ruin the electronics that are in the CFL?

No no it just excites the mercury as the air around gets ionized!!:-)Do you have any ideas for improving this!! Thank you!! :-)

well you do not need the mercury, to light up the evacuated tube. you, could even light up an evacuated tube, or a neon tube or bulb with this.

however the evacuated tube, would emit uv without the fluorescent secondary emission coating. the fluorescent tubes, actually produce uv, and the coating coverts the uv by fluoroscopy to the more visible light range. so the color of the light produced, is a result of the secondary emission frequency of coating inside. and a fluorescent black light, just uses a coating to filter out the uv a frequency.

mark_racal (author)2015-12-08

How about the EMC side of this?

Me04 (author)2015-12-04

you could make a geiger counter.

DangerousTim (author)Me042015-12-06


Me04 (author)DangerousTim2015-12-06

Because the electricity is harmless electromagnetic radiation.

ELECTROOPO (author)2015-12-02

AKA mini tesla coil

Yes right!!

Gursimran Singh 425 (author)2015-12-05


vina1991 made it! (author)2015-12-04


I am going to make a AC Tesla Coil

Very nice! For AC ypu have to change it into DC first and you need NST ! Best of luck for your project!!!!

About This Instructable




Bio: Thank you instructables!!
More by Gursimran Singh 425:Plant BoxDIY CNC For 60$ (Large Work Area)Advanced Mosquito Repeller and Swatter
Add instructable to: