Andy's thread- Don Smith Device

[andy]

Did Don Smith used Avalanche diodes?

In some his builds he maybe used avalanche diodes instead of spark gaps - for timing or for sending pulses.
In the opposite direction as normal diode (using reverse function of diode)

https://en.wikipedia.org/wiki/Avalanche_diode

   


Info about avalanche diode function:

https://www.physics-and-radio-electronic...rking.html

Specifications of avalanche diodes. Reverese voltage of some of them is over 1000 V.
https://www.vishay.com/en/diodes/ultrafa...avalanche/

[andy]

Crazy thinking .... What if?

Don Smith emailed to Bruce:

" ... into 2000 Volt module through 12,000 Volt diode bridge into heavy duty capacitor. Positive diode bridge connect only with, negative capacitor open - unattached. ..."

"....Disconnect the main diode bridge negative output from the output capacitor bank. ..."


What if "negative" is not negative DC comming out from diode bridge BUT labeled negative input to DC going the first capacitor negative output?

   

Here is schematic of circuit I tested in real conditions using ZVS driver with ferrite core transformer. I left "+" input of diode bridge connected and disconnected "-" input. This way I made "Avramenko plug" by one wire pulsating DC. I was able to charge the capacitor. And when I put load on the second transformer (output transformer), there was NO increased power drawn from ZVS.

   

[Shylo]

Hi Andy
Now take the bottom half of your bridge the two diodes not being used,
Seperate them from the top two, connect the ground of your primary the same as the top two
Now duplicate the rest of the circuit and have two outputs.

[andy]

Hi Andy
Now take the bottom half of your bridge the two diodes not being used,
Seperate them from the top two, connect the ground of your primary the same as the top two
Now duplicate the rest of the circuit and have two outputs.

Hi Shylo,
thanks for response.
Do you mean like this?
   

Or stil using one wire (top one, going from ZVS driven transformer)?

[andy]

One small step.

I got this trumpet wave in my real life experiment

   


I used this circuit (same as mentioned few posts ago). Probe position is marked by red arrow. Spark gap is GDT (gas discharge tube) 150V from Aliexpress. I used ceramic capacitor 1nF/250V (in picture is wrong value). High voltage diode 1kV 3A. The circuit is not in resonance yet.

   

[Jim Mac]

I got this trumpet wave in my real life experiment

Very Cool..  This is out of my lane, Although I can't offer advice I am watching with interest

[andy]

Impedance (Resistance) at resonance becomes zero.


Don Smith says:

   

Is the condition fot zero resistance to be LC circuit in series?
(as is depicted in PJK book http://www.free-energy-info.tuks.nl/Chapter12.pdf)


   

[andy]

Capacitor Charge Pump  - the principle

   

Interesting starts from 35s in this video
https://www.youtube.com/watch?v=ooPlDbRXzAc&t=35s


It is about ground switching. Similar principle like in Tesla Patent US787412A  https://patents.google.com/patent/US787412A/en
I wrote about in this post https://www.mooker.com/thread-31-post-366.html#pid366

[andy]

Negative Conductance (Resistance) in Don Smith presentation.

Don Smith showed this image. Trumpet wave exists on the Fig. c. where is Negative Conductance (G).

   



Wikipedia says: Electrical conductance, the ability for electric charge to flow in a certain path.
So negative conductance = bad ability for charge to flow.

Conductance = 1 / Resistance (also from Wikipedia)

So with the negative resistance we can get trumpet wave?

On Wiliam Alek presentation I found this:

   


Can be NEGATIVE RESISTANCE done by spark gap?
Maybe the one of Don Smith's key to access his results in the output stage.

[andy]

I am working on stable frequency input for my circuit. 
Due to my no skills I was not able to get constant frequency with ZVS and ferrite core

It will be something similar like this, with 555 timer. With this setup I can adjust the frequency to the desired values.