Kapanadze and other FE discussion

[AlienGrey]

Hi AG,

Okay on your comments in the Stiffler thread, thanks, and hopefully you manage to build a simple synthesizer with reasonably small components count.        Have you noticed my earlier reply to you here, perhaps you did:

Gyula

Yes I did thanks  however I had already worked through a PCB design by then, but did think of building your design but the the MM5369 looks as if it has gone extinct by 2006 (divide by 17) as well as the 74C90's it might be possible to use a PIC F509 or similar device for the MM5369
See here
http://www.frank-buss.de/PIC100/index.html

and the 7490's a CD4518 dual decade counter that's pretty fast at 8 volts.
If i can solve those problems it would be worth making.

AG

[Void]

Hi guys.

Sorry that the schematic image is a bit wide. I am in a hurry.
I will just post the schematic and patent doc I was referring to. Don't have time to comment much right now.

In around 1923, an American electrical engineer named Frank Wyatt Prentice was doing research work for the railroad
in the area of wireless power transfer/wireless power control, and says he discovered that sending
a HV HF waveform (at resonance) from a long wire a little above the ground in the freq. area of about 500 kHz
to a receiving loop antenna was giving him a power gain (COP) of about 6.
For now I will just attach the schematic with some explanatory notes I added and the Canadian patent application
document which was approved in 1925. Not sure why he patented it in Canada, but maybe he was working in Canada
at the time, but that is just a guess. Maybe there was some other reason.

He hypothesized that when the long wire transmitting antenna was at resonance at around 500 kHz that it was resonating with
the earth currents and this caused the mysterious power gain (COP of about 6). He used a sparkgap in the long
wire antenna and tuned the wire for exact resonance, and had two earth ground connections at each end of the long transmitting wire.

He used a small tuned loop antenna to receive the power. He stated about 500 W input and about 3 kW output,
powering 50 x 60W carbon filament light bulbs to 'full candle power'. See the attached schematic and patent doc.
Although I am pretty sure he was just guessing about his antenna resonating at the same frequency as earth ground currents
which caused the power gain, he does make some interesting observations about how small height and frequency changes
affected the output power. What really made it work (assuming he wasn't making a major measurement error) is anyone's guess.

Replace the resonant long wire transmitting antenna with a resonant tesla coil and the small loop receiving antenna with a receiving coil
and you would essentially have a very compact version of the setup seemingly similar to Kapanadze. He said you could replace the
earth ground hop with a metal wire, but it reduced the performance. Maybe Kapanadze just figured out how to make this sort of setup 
work with a single earth ground connection and much more compact arrangement...

P.S. I forgot to label #21 on the drawing. It is of course a sparkgap.
Frank Prentice may possibly have been a Canadian, as the patent ownership was listed as:
THE PRENTICE ELECTRIC POWER APPLIANCE COMPANY OF CANADA LIMITED
However, for some reason Frank Prentice put his location on the patent drawing as Meadville, Penn'a (Pennsylvania).
At any rate, what I am drawing attention to is the similarities of the setup in his patent doc to Kapanadze/DalyAkula devices.

[Void]

An interesting side note on 'Frank Wyatt Prentice'.
I found an entry on the ancestry.ca website for a 'Frank Wyatt Prentice'.
The info listed seems to match reasonably well with the Frank Wyatt Prentice who filed the Canadian patent:

Frank Wyatt Prentice (1868 - 1937)
Born in Garrettsville, Ohio, USA on 1868.
Frank Wyatt Prentice married Adelia Roberts and had 6 children.
He passed away on 7 Nov 1937 in Hamilton, Ontario, Canada.
https://www.ancestry.ca/genealogy/records/frank-wyatt-prentice_69000255

So, if this is referring to the same 'Frank Wyatt Prentice', it seems he was
born in the USA but later moved to Canada. This would seem to explain why
this guy seemed to be associated with both the USA and Canada, and filed his
patent application in Canada. If it is the same guy, it appears some of his children
might still be alive, although they would be pretty old.
The wonders of the internet...

[jojo500]

hm.. 500khz .. that's a wavelength of lambda 1= 600m

how ever one could use lambda1/4 as a coil ore box antenna without ending up having what's called a magnetic antenna as long as you use a relateivly  long groundwire  (say 20m for a first test) .
look at the videos of some of the guyes, some of em mad a lot of effort to get the best earth ground they can get .. and at the same time they use a sh..ty wire to connect to the device! an allways relatively long sooo?

just how i look at it

[apecore]

Here is some of what I take away from Prentice's patent comments as being noteworthy:
The frequency you tune to may well be quite critical, and you may have to experiment tuning through a wide range of frequencies
to see what might work in your specific location and with your specific setup. I think this would not be so easy to do at all with
a tesla coil which resonates at a specific frequency.

Hi Void,

Yes it could be a important parameter the location and its specific frequenty to tune.
This would not make it easyer due we would need to stick on the long wire principle........   Using the wire as a coil it would effect its inductance and therefore the needed caps to tune it in the right specific resonance (earth).
This all together probably the first step to think about is resulting in a lot of "mayor" changes...regarding the patent setup.

1- if specific frequenty is approx 500khz.... and the setup needs in that order a specific reactance from the capacitor this needs to be related to the wire inductance (coil part), so changing the wire into a coil would have a mayor effect on this relationship.

2- If the frequenty is not depending on the location .... and more related to the COP factor it would be possible to use shorter wire (same physical configuration),..  but using a higher frequenty.

This last statement is in fact also a kapanadze/ dally approach due the wire lengths are shorter and also the inductance ( now it is getting tricky,...  800 mter wire what would its inductance be?...  would it approx. the same as the bifilar kapanadze coil?  ( 100- 300uH)

Lets formulte some objectives before starting drilling groundrods..

a) Wire or coil in relation to capacitance / inductance reactance ........is a specific capacitance reactance needed?
b) Is wirelength a power factor or related to the needed eart(location) frequenty?

Just some out of the box suggestions.


Greetings