Negative resistance via pyroclay.com material ?

[RadiantEnRg]

Well, I don't have a multimeter, and no longer have that particular power supply. In later tests/experiments I "fried" the power supply. Anyway I am going over to a buddies house who said he has lots of extra ones laying around so I will see if I can get one that pulses fast enough.

[armagdn03]

I can understand the frustration of RadiantEnRg, he was asked to participate here, and present, and sometimes people can come off as a little critical of others. I think it takes understanding on both sides.

Thank you though for comming here and posting your results, im sure there are alot of people who are "browsers" who do not post, but are glad still that you are sharing with us. Please keep doing so, and dont let people get to you, I even know people who have gotton almost jelous of others progress, simply because it was not their own idea.

[linda933]

All I am telling you, and others are saying the same thing, is that your demonstration could be much more convincing and get a lot more people interested if you simplified it by using a battery instead of a switchmode power supply and it still worked.  That seems pretty simple, and since you are already in posession of these magical beads, why not do the simple battery/bead/motor video demonstration and really get the interest going?  Lots of us would really like to see that, if you could do it.

Well, I don't have a multimeter, and no longer have that particular power supply. In later tests/experiments I "fried" the power supply. Anyway I am going over to a buddies house who said he has lots of extra ones laying around so I will see if I can get one that pulses fast enough.

Now I am really confused!  The idea is don't use a power supply...don't use a multimeter...just use a battery, your bead and the motor.  Do the same experiment as the first video, just replace the power supply with a battery.  Then see if your motor speeds up when you go through the bead instead of direct.  Do you understand what is being asked for?  Or is there something special about the combination of your particular power supply and this bead thingy that makes the extra power in your mind?  Please explain for those of us not as gifted intellectually.  Thanks!

Linda

[armagdn03]

I believe one could use a battery, but you would have to use a 555 timer and "enginner" a biased ac/dc signal with sharp wave forms. But........i think that if the bead is acting as a negative resistor (spark gap) then the wave forms that come off of it should resemble this.

I gave a link a bit back to a guy that made negative resistance resonators by placing a pin against a slightly corroded piece of metal (he used heat to oxidise the surface a bit I think) with a dc input he was able to get frequencies in the audible range and hooked speakers up to the circuit to proove it to himself. im quite sure there is nothing special about the bead....its just a spark gap.

[linda933]

I believe one could use a battery, but you would have to use a 555 timer and "enginner" a biased ac/dc signal with sharp wave forms. But........i think that if the bead is acting as a negative resistor (spark gap) then the wave forms that come off of it should resemble this.

I gave a link a bit back to a guy that made negative resistance resonators by placing a pin against a slightly corroded piece of metal (he used heat to oxidise the surface a bit I think) with a dc input he was able to get frequencies in the audible range and hooked speakers up to the circuit to proove it to himself. im quite sure there is nothing special about the bead....its just a spark gap.

@RadiantNrG

I thought the power supply was providing 27V DC, well-smoothed and filtered by its 30V capacitor.  Is that incorrect?



Linda