crystal radio: the first real free energy device

[profitis]

Thanks pomodoro.I get about 0.3 microamp with single crystals,ruled out light but its not exactly practical.

[gyulasun]

....   You mention increasing the conductivity of the coil to increase the Q. But would we also get this effect by irradiating the bare coil with a negative ion generator, like the ones popularized in the 1980's.  Pointy needles are made to have a high electrostatic voltage and millions of ions per second stream out of the points.  The ions would contact the coil and leave electrons on its surface, also giving it a high negative electrostatic charge, but would it really  increase its conductivity? I'm not so sure.

Hi pomodoro,

I agree, I do not think either that using ion generators the Q of coils would change for the better, in fact it would not change at all. Alpha particles (that come from radium, polonium etc) penetrate the wire while ions would not, this is a big difference.

Gyula

[Pirate88179]

Hi Bill, the 22k (sometimes 100k ) is to make the crystal earphones work properly. Because they have infinite resistance and some capacitance, the voltage would build up to a dc level -  without the resistor bleeding some power away.

Thank you very much.  I was really wondering about that.

Bill

[pomodoro]

Hi pomodoro,

I agree, I do not think either that using ion generators the Q of coils would change for the better, in fact it would not change at all. Alpha particles (that come from radium, polonium etc) penetrate the wire while ions would not, this is a big difference.

Gyula

Yes, that's absolutely true. I've decided to try and work out exactly how much energy the 0.25g of Uranyl Oxide can give through its decay.  The conversion of this alpha, beta and gamma energy into electricity is, at the moment, very inefficient with out current technology, but lets assume in out case it is 100%. Also, we need agree that this is the only and total energy available from our diode and  no aetherial or other nuclear processes are occuring, which will provide us with yet unknown energies. I'm also assuming the uranium is not depleted, which would mean that the radiation would be approximately halved.

The atomic weight of UO₃ is 238+3(16) =286

Mass of Uranium in UO₃ =238/286*250mg = 208mg
Activity of natural Uranium = 25.28 Bq/mg (disintegrations per mg) [If depleted , then it is 14.8 Bq/mg]
So disintegrations per second = 25.28*208mg = 5259


The range of  alpha decay energy is 4.2-4.8 MeV, assume 4.6.  (beta and gamma decay is insignificant compared to the alpha decay).
Or , in the more convenient unit of Joules, 4.6x1.602x10^-19- =  7.3x10-¹⁹J .


The power from the 0.25g of UO3 is then  =5259x7.3x10^-19 = 3.8^-15 watts. This tiny amount of power is all the uranium can supply, assuming all electrical processes are 100% efficient.

Yakes! I did not realize it was this low actually. So I'm guessing even the microampers from the antenna are too large to have been helped by the uranium.

[profitis]

3.8-15 watts is actualy quite a lot pomodoro.enough to power a clock.take a infrared photoshot of a gram of the stuff in the dark and chek how much temperature is evolved.I'm thinking thermo-electric is the way to go to atleast tap a few percent of the total ergs