25mV Joule Thief powered by peltier merely using our body heat -Free energy 24/7

[magpwr]

Hi,

There is a plan which just appeared in my mind.If anyone make it works then it would be the "1st crystal powered fm radio receiver" ever.

I'd believe almost everyone have heard of "crystal detector" use to receive AM and SW broadcast.

Since 25mV joule thief is technically a voltage booster.

I wonder if we combine geranium crystal with the usual antenna and ground or earth then use that to power 25mV joule thief with 1..4 x 2sk170 to power ready made 1.5V fm radio(digital or analog).
The output speaker might need to be change to piezo speaker to lower 1.5v radio current consumption.
In theory may work.Please take note of output voltage from joule thief may need to use zener 2.4v maybe or small red led to prevent voltage from rising beyond  1.8v.

I know the above suggestion sounds like a crazy idea to achieve a "world 1st batteryless  1.5v fm radio which will have clear reception".

[scratchrobot]

Hi,

There is a plan which just appeared in my mind.If anyone make it works then it would be the "1st crystal powered fm radio receiver" ever.

I'd believe almost everyone have heard of "crystal detector" use to receive AM and SW broadcast.

Since 25mV joule thief is technically a voltage booster.

I wonder if we combine geranium crystal with the usual antenna and ground or earth then use that to power 25mV joule thief with 1..4 x 2sk170 to power ready made 1.5V fm radio(digital or analog).
The output speaker might need to be change to piezo speaker to lower 1.5v radio current consumption.
In theory may work.Please take note of output voltage from joule thief may need to use zener 2.4v maybe or small red led to prevent voltage from rising beyond  1.8v.

I know the above suggestion sounds like a crazy idea to achieve a "world 1st batteryless  1.5v fm radio which will have clear reception".

Nice idea and maybe it is possible with an antenna and a ground conection?
Would also be nice to just charge a cap with the output of a cristal radio with your circuit and blink a led now and then.

[TinselKoala]

http://solomonsmusic.net/FM_CrystalRadio.html
http://www.somerset.net/arm/fm_only_lowtech.html
http://www.vacuumtubesinc.com/TubeTidbits/AnFMCrystalSet.aspx
http://electronbunker.ca/FMCrystalSet.html
http://www.youtube.com/watch?v=IUaZlCeEMpY


Not FM.... but no external antenna or ground needed:
http://www.arrl.org/files/file/Technology/tis/info/pdf/culter.pdf

[conradelektro]

Hi,

There is a plan which just appeared in my mind. If anyone make it works then it would be the "1st crystal powered fm radio receiver" ever.

I'd believe almost everyone have heard of "crystal detector" use to receive AM and SW broadcast.

Since 25mV joule thief is technically a voltage booster.

I wonder if we combine geranium crystal with the usual antenna and ground or earth then use that to power 25mV joule thief with 1..4 x 2sk170 to power ready made 1.5V fm radio(digital or analog).
The output speaker might need to be change to piezo speaker to lower 1.5v radio current consumption.
In theory may work.Please take note of output voltage from joule thief may need to use zener 2.4v maybe or small red led to prevent voltage from rising beyond  1.8v.

I know the above suggestion sounds like a crazy idea to achieve a "world 1st batteryless  1.5v fm radio which will have clear reception".

@magpwr:   At what Voltage does the ZTX1048A transistor self start in your circuit? (You mentioned that you could start it at 60 mV by briefly shorting collector / emitter.)

@crystal power idea:   I did extensive tests and found that the "field strength" of radio, TV, cell phone and WLAN transmissions is way too low to receive any meaningful power. People who lived only a few kilometres away from big AM radio transmitters could receive some power, but most AM stations have shut down in Europe. Also very long antennas and a good earth ground are needed (which is not practical). But I might have done everything wrong and more clever people can find a way.

One can get some power in the µA from the 50 Hz 220 V AC net if one places the "antenna" (just a long cable) very close to appliances which consume power (lamps, refrigerator, washing machines, etc.).

Some people draw mA from the neutral of the 50Hz 220V AC net. But this is cheating. If the 50Hz 220V AC net is not balanced (unequal load on the three phases which are usually distributed) the neutral wanders away from earth ground, and one can draw power from this (between neutral and earth ground).

I see the application of your circuit with Peltier Elements, self made low power batteries and may be even Piezo Crystals.

What I like to dream about is a "neutrino receiver" because the earth is constantly bombarded with neutrinos from the sun. The problem is, neutrinos do not like to interact with any material. But may be some strange material or "field" can be found, that catches neutrinos. But this is just a wild speculation.

Greetings, Conrad

[conradelektro]

http://solomonsmusic.net/FM_CrystalRadio.html
http://www.somerset.net/arm/fm_only_lowtech.html
http://www.vacuumtubesinc.com/TubeTidbits/AnFMCrystalSet.aspx
http://electronbunker.ca/FMCrystalSet.html
http://www.youtube.com/watch?v=IUaZlCeEMpY


Not FM.... but no external antenna or ground needed:
http://www.arrl.org/files/file/Technology/tis/info/pdf/culter.pdf

@TinselKoala: very nice circuits. What I always wanted to do is getting away from tuning into a single transmitter or radio station. I want a "broad band receiver" which catches all transmissions from 60 MHz to 10 GHz and then just rectifies all these waves into DC with a full bridge rectifier using HF diodes.

This needs a special "broadband antenna" which catches all electromagnetic waves in a wide spectrum. The problem is the "geometry" of this antenna because different wave lengths need different antenna lengths (for a dipole antenna it is lambda/4).

Greetings, Conrad