Negative resistance via pyroclay.com material ?

[armagdn03]

@armagdn03
Very interesting post.
Do you think the bead you are trying to make might naturally exist? Swedish stone comes to mind!
The link you posted does not work. Is it correct?

Yes the beads I am making do naturally exist.....they are just a spark gap. If you read my above post, you will see that a sparkgap that is finely tuned can find its own resonance. It doesnt even have to be that finely tuned if you have sharp enough cutting of the current (pulling the contacts appart and using the BEMF) theoretically the voltage spike can be many many times the input voltage. Thats all you need for a spark.

The site again is

http://home.earthlink.net/~lenyr/zincosc.htm

It should work I just went there. This is the exact same thing, only it can handle less power, but it is using a corroded piece of metal where the corrosion acts as the spacing inbetween the cathode and anode. When ionization tips over to the point of full out conduction through plasma (a spark) you get a dissipation of energy that falls below the level needed to sustain the spark and it self extinguishes untill the potential rises to a point high enough to start the cycle over. If you can control this natural oscillator to fire at a precice time, you could find the resonance of what ever inductor you hook up to it. Tesla did this by rotating counter opposed spark gaps, moving fluids, flame, hot air, electro magnets, but if you could find a clever mechanism that caused the spark to fire exactly when the first pulse bounced back you would have a device that finds resonance to any coil it is hooked up to.

[AhuraMazda]

@armagdn03
I mainly deal with microelectronics so forgive a naive question. Could we not use a fluorescent tube as a spark gap? They have a negative resistance characteristic too.

[hartiberlin]

Hi,
a multimeter is not enough to measure this correctly, you need at least a scope to really see, what is going on.
Please post scope shots.
Many thanks.

[armagdn03]

@AhuraMazda

Then im sure there is much we can learn from each other!
Actually I bought a Xenon flash tube the other day, and its specs say that the flash durration is 1-2us well below teslas minimum of 10us. I guess we will have to experiment to see if this is a viable option!

[RadiantEnRg]

@Hartiberlin....I would like you to explain something that my "simple" mind cannot grasp. How can a step down transformer's secondary winding supply any voltage other then what it was tuned to give??? Also, I have scoped it...27V!!!....use your mind, as the eyes cannot always be trusted. Either believe me, or do not. Just think about it a little harder pls. How could that power supply "jam" open to a higher V???.....And if that was the case why wouldn't it blow up the 27V cap?.......and why did a multimeter average 27V @ the motor?....There is obviously a higher voltage.....psssst....It's created from the BEMF!!!!!! SIMPLE AS THAT...pls think about it....and re-read Armagdn03's thread......HE GETS IT!!!