Donald Smith Devices too good to be true

[Patrick Kelly]

Zilano document

The design document is attached here. I downloaded it a month ago and have no idea where the link is in this forum.

Patrick

[JohnStone]

The design document is attached here. I downloaded it a month ago and have no idea where the link is in this forum.

Patrick

Thanks Patrick !
You are right. The circuit you referred to is of the same idea. So my last post is true: It needs to be explored!

Suffitient theory in my brain now Thanks for all sharing!
I retract for experiments building additional types of HV PSUs and coils first.
rgds John

[Slovenia]

Thanks!!

Thanks Mr. Clean for sharing this!!

just drive your primary like a tesla coil.....tried, tested, and true.

Tesla coils have been around for hmmm... a little while and the idea is to oscillate to meet the SECONDARY resonant freq.

Say your primary is 30khz on the screen, with building wave form

...SO... would Burnet worry about changing L1 cap and freq if L2 was not reacting??

NO,.... we ALREADY have our building wave, and freq we want to use.

So using smith/burnet(tesla) rules all together, and lets go by length for final tune
(like tuning a guitar string on 5th fret and next open string)

WATCH THIS: DRASTIC: TUNING ON THE FLY

DRASTIC Tuning on the fly - YouTube

and here is his ADJUSTABLE MOTORIZED setup for adjusting L1 TAP

tapper.MPG - YouTube

NOTICE HE DIDNT CHANGE CAPACITANCE OR FREQ, everything is already as you want it, just L1 length
**We adjust the L1 TAP to find the 1/4 length tune, and make sure the capacitance matches inductance and freq. (for TCs its topload, here its L2 tank)

LOOKS LIKE DONS BONUS VID IS RIGHT, L2 WILL COPY L1, BUT THEY NEED TO BE 1/4 LENGTH OR EVEN MULTIPLE OF THAT TO COMMUNICATE

AND BY THE SAME RULE... COULD ALSO BE X4 LONGER IF YOU WANT TO STEP DOWN

[Duncan]

This post may start a revolution

I believe this is probably the most important post I will ever makehttp://upload.wikimedia.org/wikipedi...hip_effect.png

[Duncan]

There used to be quite a long and informed thesis on Wiki all about the Bull whip and its effects I can't find it any more, I guess if I take my computer to bits and go through all my old Hard drives I may come up with it. Mean while perhaps any one who comes across any scholarly work on the whip and its action please post.

[soundiceuk]

In my question to theoldscientist about inductance and capacitance he answered with the following. I thought it might be useful to some:

"The subject is well explained in many forums and scientific papers.
To show you the difference look at my second video of radiant energy. Dollard in his papers is explaining it very simple. Inductance. The further the windings apart the higher the inductance. The closer the windings the more capacitance. A capacitor is the opposite of an inductor. Under certain frequency both behave the same resistance. WE call it impedance for inductor or admittance for capacitors. The value is negative for capacitors. You can use them in the all mighty RLC network. Have a look at my tutorial page.
RF Inductance Calculator - HAMwaves.com
Scroll down to negative inductance coil value. It will show you a Tesla coil and explain why.

There are a couple of videos from Eric Dollard where he shows the frequency difference. It is fairly simple once you understand the relationship. The execution is difficult."



Very good bell analogy Duncan and JohnStone. Top Bannana!!!

[Patrick Kelly]

Capacitor type

Capacitors and resistors are made in sets of preferred values really so that within the tolerances of the components the engineer can in practice .and with a little trial and error get to pretty much any desired value,(mix and match) look at the value selected for the capacitor in this case ...874Nf what sort of a preferred value is that?

Hi Duncan,

My apologies for not writing it on the circuit diagram, but as it says in the video, the 874 nF capacitor is a capacitor out of a microwave oven.

Another approach is to connect the nearest 'standard capacitor' to the calculated capacitor value, across the primary of the resonant transformer and then adjust the frequency of the input signal slightly to get the exact resonant match.

Patrick

[Duncan]

Hi Duncan,

My apologies for not writing it on the circuit diagram, but as it says in the video, the 874 nF capacitor is a capacitor out of a microwave oven.

Another approach is to connect the nearest 'standard capacitor' to the calculated capacitor value, across the primary of the resonant transformer and then adjust the frequency of the input signal slightly to get the exact resonant match.

Patrick

No sweat Patrick ..Its clearly shown on the video I simply forgot .. I have found an old microwave cap in the garage but rated 1.02 uf I'll throw that in and see what transpires .. lucky accident then that I started thinking along the lines above good .. Its filled in a lot of gaps .. the trouble is any technical information on whip action seems to have been removed from the net or else I'm sure a working mathematical model could quickly be made
best wishes Duncan

[FRC]

Sorry

Hi Duncan,

My apologies for not writing it on the circuit diagram, but as it says in the video, the 874 nF capacitor is a capacitor out of a microwave oven.

Another approach is to connect the nearest 'standard capacitor' to the calculated capacitor value, across the primary of the resonant transformer and then adjust the frequency of the input signal slightly to get the exact resonant match.

Patrick

No sweat Patrick ..Its clearly shown on the video I simply forgot .. I have found an old microwave cap in the garage but rated 1.02 uf I'll throw that in and see what transpires .. lucky accident then that I started thinking along the lines above good .. Its filled in a lot of gaps .. the trouble is any technical information on whip action seems to have been removed from the net or else I'm sure a working mathematical model could quickly be made
best wishes Duncan

Sorry, I guess I have not been following close enough. Can someone tell me
which video is being refered to in the last few posts ?

George

[Duncan]

Hi Patrick @ John Just to show the general concept of this thing works .. although I have obviously got a lot of difficult buggering about to find a resonant spot https://lh6.googleusercontent.com/-I...0/DSCF0164.JPG

https://lh5.googleusercontent.com/-xtFXeSTN16k/TyWa03QED3I/AAAAAAAAAGM/-xwAcKKtACM/s800/DSCF0165.JPG

but the NST the NST cap the little Neons ect all seem to do there thing .. IMHO however the sytem Mr clean has put together isd a better option unless a rapid way of getting to the resonant point occurs to me

[Patrick Kelly]

Video link

Sorry, I guess I have not been following close enough. Can someone tell me
which video is being refered to in the last few posts ?

George

Hi George,

The post is number 2689 on page 90 and the video link is Don Smith Quick Mockup Primary - YouTube


Patrick

[Duncan]

anyone feel like a bit of number punching ?

Anyone in the mood for checking the approximate winding I need to get to resonance with this fancy calculator thing RF Inductance Calculator - HAMwaves.com

[soundiceuk]

Hi Patrick @ John Just to show the general concept of this thing works .. although I have obviously got a lot of difficult buggering about to find a resonant spot https://lh6.googleusercontent.com/-I...0/DSCF0164.JPG

https://lh5.googleusercontent.com/-xtFXeSTN16k/TyWa03QED3I/AAAAAAAAAGM/-xwAcKKtACM/s800/DSCF0165.JPG

but the NST the NST cap the little Neons ect all seem to do there thing .. IMHO however the sytem Mr clean has put together isd a better option unless a rapid way of getting to the resonant point occurs to me

What does the scope shot signify?

Here are some links that contain some useful information:

Javascript MMC designer

Tesla Coil Design, Construction and Operation Guide

TeslaMap - Tesla Coil Design Program

Eastern Voltage Research - DRSSTC Books

http://www.easternvoltageresearch.com/documents/book_drsstcpreview.pdf

[FRC]

Thanks Patrick

Thanks for reposting the link Patrick.

George

[Duncan]

nothing very much only that the basic circuit is working and transfering from L! to L2 ,, wont do anything interesting until some sort of resonance is in place .. thats just whats coming out of the NST .. If I can find either resonant point it should of course turn into a perfect sine wave.