Free Energy/ Cellphone Detector (From Cellphone Antenna)

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This simple circuit is able to detect signal from your cellphone antenna and converts it to electricity to power an LED ( the best thing about this is that its completely passive and doesn't require batteries ) this circuit requires: RF diode ( search ebay for: RF diode or microwave diode) LED Peace of wire Solder I have Noticed that it only detects phones working on (EDGE), ocasionally works on 3G I have a low knowledge about RF but I think it has to de with the shape and/or length of antennas. So if you can contribute to make it work better please do so. ( this is based on a video i saw a long time ago on you tube ) the video had no instructions. here is the link http://www.youtube.com/watch?v=CNJVhzOjWgU&playnext=1&list=PL8ACFDE47FA548451 (RF energy, LED, tesla, passive, electricity)

Step 1: LED+RF Diode

First Solder the led parallel to the Rf diode


Step 2: RF Diode+ LED+ Wires


Solder One peace of wire to each end of the RF diode which will work as antenna

Step 3: Make a Call and Put the Circuit Next to Phone

The LED should Light up if the circuit is close enough to the phone while making a call.
I noticed that this works only if you are on EDGE .
If you are on 3G it only works occasionaly and the LED is very DIM

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    18 Discussions

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    vinay sidawadkar

    9 months ago

    Hey..nice work..wil u please post the link where from u purchased the diode u used in this project

    1 reply
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    slimjedvinay sidawadkar

    Reply 8 months ago

    Hey thank you . It’s been a few years since I made this. Back then, I found few diodes on eBay at a good price. They seem to be way over priced now. The first link is fairly reasonable but Here are some links.
    I would search for Sylvania 1n25, that one worked for me.
    Hope it helps

    https://m.ebay.com/itm/JBQV-1N25-Diode-Kemtron/202032465627?hash=item2f0a12c6db:g:lvQAAOSwkRpZncLV

    https://m.ebay.com/itm/JBQV-1N21C-KEMTRON-MICROWAVE-DIODE-NOS/173197416320?hash=item28535ed780:g:gYQAAOSwRvdZa7eb

    https://m.ebay.com/itm/Vintage-Sylvania-1N25-Point-Contact-Microwave-Diode-/191954007526?_mwBanner=1



    https://m.ebay.com/itm/D6724-92-Diode-Alpha-/192286605102?_mwBanner=1

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    mx28

    4 years ago

    can I find this diode or one that will work in a microwave? like one in a kitchen? I read somewhere else that some schottky diodes in parellel (or could be in series) will do the same thing. if I remember correctly the diodes part number was 1ss86? not sure. I just want something that simply lights up when I get a call/text.

    1 reply
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    slimjedmx28

    Reply 4 years ago

    Hi. Sorry for the late response but I just came across your comment . I I have not come across diodes that are rated for that frequency range.
    Your microwave oven operates at 2.45 GHz which is in the range of wifi ( 2.4 GHz to 2.48GHz). I guess if you can find one that is rated for that range, it might work next to your microwave oven.

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    Hi! I found a back of RF Switching Diode (35V/100ma)--is that the type of RF Diode used in this project?

    Here's the link: http://www.ebay.com/itm/25pk-BA244S-RF-Switching-Diode-/370518953352?pt=LH_DefaultDomain_0&hash=item5644a68d88#ht_730wt_1141

    It only works with frequencies on the orders of hundreds of mega hertz ( less than one gig) .wifi runs on 2.4 gigs so it won't work.

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    slimjedzack247

    Reply 7 years ago on Introduction

    Hi,
    Some people say that it would also work with germanium diodes. I have tried germanium diodes but it didn't work for me . I bought these rf diodes off of eBay ( 4 diodes for $12 ) I honestly don't know where they can be found.

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    -max-

    7 years ago on Introduction

    interesting connect one end of the diode/diode to ground and replace the RF diode with a germanium diode. it may work better and replace the led with a joule thief. it might be brighter

    8 replies
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    slimjed-max-

    Reply 7 years ago on Introduction

    Thanks for your input max
    I will try your I dea and upload my results

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    -max-slimjed

    Reply 7 years ago on Introduction

    The germanium diodes are very hard to com across but you can find them in very old am radios and all over ebay (1n34a is a very popular one) also try schottky diods they have very low drop voltages (more than germanium diodes) but have a higher leakage curent.

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    slimjed-max-

    Reply 7 years ago on Introduction

    I just found out they sell germanium diodes at my school! I picked up few today and they were pretty cheap. There are few circuits I wanna build .:)
    So the mod you suggested should be grounded to real earth ?

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    -max-slimjed

    Reply 7 years ago on Introduction

    What school do you go to!? That's epic. What is the part number?

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    slimjed-max-

    Reply 7 years ago on Introduction

    i go to George Mason University ( in virginia)
    the diode is 1n34. they are clear diodes.

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    -max-slimjed

    Reply 7 years ago on Introduction

    Well there are better ones out there but 1n34A is a VERY popular one.you can just go to your local electronics store to get those rare diodes. How mush was each?

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    slimjed-max-

    Reply 7 years ago on Introduction

    they were 10 cents each. so they won't do a good job?
    i have looked for the 1n34A for years at radioshack but no chance,

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    -max-slimjed

    Reply 7 years ago on Introduction

    as i said they are rare i have not found anyone of store selling them that isn't on-line. i have slowly learned that radio-shack only sells very very general popular electronics ind the electronics they do sell are very expensive. (compared to ebay) there all different kinds of germanium diodes all with different specs it all depends on what you are doing.