Magnetic Resonance Devices based on Don Smith Concepts

[Peterae]

An addition to the above post, i will also say that i think the Neon psu he used also had a dimmer built in and no doubt this would have worked well, but then why add another on the 120VAC inverter output.

Peter

[forest]

NST must work like Tesla coil with center tap secondary. Dimmer is probably because his capacitors looks like joined in parallel which means they are 4000VDC not 9kV

[Peterae]

The 2 capacitors are in parallel to give the required 200nF, but the spark gap is in series with the cap, i would imagine the dimmer is there to alter the firing rate of the spark gap.

We have quiet a lot going on in this build, we have the tuned primary frequency, the untuned secondary frequency, we have the importance of the wire lengths for primary to secondary 1/4 relationship, and we also have the speed at which the gap fires the energy into the resonant system, each one seems to be set for a specific reason which hopefully we can work out at some point.

Peter

[turbo]

Hi Minde

Thanks for your input.
Yes i agree i am going to rebuild my primary tommorow to get it as big a diameter as i can so it still fits inside the secondary.

Don did tune his secondary coil precisely by testing for nodes with a neon which i will also try once i feel i have got as close to his coil setup as possible, again you are probably right that it is not so important i get an exact match to his coils but for replication purposes i might as well try as best i can.

We will see how i go tommorow.

Yes the quarter wire length for primary seems to be the important bit not quarter wavelength.

Peter

Hi Peter 

I heard from a friend you were about ready to fire it up.
Don does mention in the video the secondary needs to be a division or multiple of the primary.
This is also seen in Tesla's work and i had the same question as you,does he mean wavelength or wire length.
Although Tesla also used alot of mass matching in his coils too.

Hope you get it to work soon

Marco.

PS. Did you find that chart for finding the frequency correcting resistance?

[Peterae]

Hi marco
I have ordered the book Don references to with the charts but it has not arrived yet.

I am slowly getting to the point where i can progress, my main concern so far has been getting my coils to the right dimensions.

I have just powered up using a sig gen and a 200nF cap across my primary, i wanted to see what i would get on an untuned secondary coil.

I have attached 2 FFT shots

I am not yet ready to power this with an NST as it hasn't arrived yet but soon.

Peter