Donald L Smith

[dragon]

Its Tesla's Colorado Springs notes...

Actually no parametric resonance in play here... only quite large Q and enormous amperages (as far Q permits). According Tesla's testimony, the jars comprising the Lp part broke down frequently due to heavy loading.

I suggest you read the whole book. It a breath of fresh air...

...

Down to that circuit, the L1 in my case will be 100-300 uH and C1 around 8-20 nF. The Cp will be 200-500 nF and Lp 4-5uH.
From the setup readily is seen that when the spark-gap fires, the LpCp is seen as a short cut and does not affects much the L1C1 part much (if at all).
By regulating the L1 here, we can match the L1C1 and LpCp to have some resonance frequencies..

Thus we can ping the LC part with a voltage that defined by the spark-gap and have as much current as the Q of the tank LpCp permits.. Perhaps kilovolts range at tens amps is quite feasible!

Thanks for the book lead, I ordered a copy of it and should have it by next wednesday. I've been working with a 2000 page book with all tesla's lectures and patents in it, it's an old one with a 50's copyright, I've barely scratched the surface with my experiments so far. Still learning....
________

[baroutologos]

Its Tesla's Colorado Springs notes...

Actually no parametric resonance in play here... only quite large Q and enormous amperages (as far Q permits). According Tesla's testimony, the jars comprising the Lp part broke down frequently due to heavy loading.

I suggest you read the whole book. It a breath of fresh air...

...

Down to that circuit, the L1 in my case will be 100-300 uH and C1 around 8-20 nF. The Cp will be 200-500 nF and Lp 4-5uH.
From the setup readily is seen that when the spark-gap fires, the LpCp is seen as a short cut and does not affects much the L1C1 part much (if at all).
By regulating the L1 here, we can match the L1C1 and LpCp to have some resonance frequencies..

Thus we can ping the LC part with a voltage that defined by the spark-gap and have as much current as the Q of the tank LpCp permits.. Perhaps kilovolts range at tens amps is quite feasible!

[dragon]

Nice link.
By the way, i proceed without matching the NST to my main LC circuit.

I plan at utilizing one of Tesla's suggested circuits for great undiminnishing resonance. (see below)

The NST will be rectified and feeding the C1 cap for firing at a rate 500 times per sec via the spark gap (say) while the large Cp will resonate freeley (whether the spark gap fires or not) with Lp.

I Choose this because the resonace is quite SHARP, according Tesla saying. By making a huge L1 (0-300uH) i will have extensive tuning capabilities.
My L1 is a bucket 10''+ in diameter with 50 turns of tinned copper 1.5mm wire.

Which book is that from? Interestingly enough I was working on a circuit similar to that last night without the spark gap and lower L . It seems to display some parametric qualities and with the right combinations of L and C can really accumulate high amperage in the tank.
________

[baroutologos]

Nice link.
By the way, i proceed without matching the NST to my main LC circuit.

I plan at utilizing one of Tesla's suggested circuits for great undiminnishing resonance. (see below)

The NST will be rectified and feeding the C1 cap for firing at a rate 500 times per sec via the spark gap (say) while the large Cp will resonate freeley (whether the spark gap fires or not) with Lp.

I Choose this because the resonace is quite SHARP, according Tesla saying. By making a huge L1 (0-300uH) i will have extensive tuning capabilities.
My L1 is a bucket 10''+ in diameter with 50 turns of tinned copper 1.5mm wire.

[dragon]

MMC caps

Thanks Dragon for this site!

From your experience the best Q (caps or MMC) for LC tanks circuits (large currents at say 100-200 Khz) are what?

Polypropylene? I know vaccum caps are best or mica, but since are way too expensiv and capacitance way too low, (i need say 200-500 nf) i condider alternatives.

...
CMR1A3918SP-2: 0.02uF 4000V Film Capacitor (Axial Leads)

closest available to Don's apparatutes caps. CMR 1A type custom made

Here is a site that helps to explain the MMC caps and gives a list of the best ones to use with links Tesla Coil Design, Construction and Operation Guide

Unless your using all the exact components that Don used I would tend to match the NST to the cap then design L1 for that cap to resonate at L2 frequency.
________

[baroutologos]

Thanks Dragon for this site!

From your experience the best Q (caps or MMC) for LC tanks circuits (large currents at say 100-200 Khz) are what?

Polypropylene? I know vaccum caps are best or mica, but since are way too expensiv and capacitance way too low, (i need say 200-500 nf) i condider alternatives.

...
CMR1A3918SP-2: 0.02uF 4000V Film Capacitor (Axial Leads)

closest available to Don's apparatutes caps. CMR 1A type custom made

[dragon]

h20,

Hey man! those are of DC type propably.. Everyone must give carefyle note on note the fact that the capacitor needed for a high Q tank circuit must possess certain properties.

namely to be able to work at intended RF (50-200 Khz) frequencies with minimum heating, possessing good Dv/Dt characteristic, etc.

those mentioned (32uf, at 5Kv) are NOT suited for LC tank circuit. Actually there are only for storing energy and used in pulsed circuits.

...

The only way to make my own of the required quality and capacitance is to make a MMC bank like tesla coils.

Try Discount Electronic Components ? Tedss.com , they have caps up to 10kv in all sizes AC and DC
________

[baroutologos]

h20,

Hey man! those are of DC type propably.. Everyone must give carefyle note on note the fact that the capacitor needed for a high Q tank circuit must possess certain properties.

namely to be able to work at intended RF (50-200 Khz) frequencies with minimum heating, possessing good Dv/Dt characteristic, etc.

those mentioned (32uf, at 5Kv) are NOT suited for LC tank circuit. Actually there are only for storing energy and used in pulsed circuits.

...

The only way to make my own of the required quality and capacitance is to make a MMC bank like tesla coils.

[h2ocommuter]

Bar,
I have looked on ebay and found four or five auctions of these types
5KV 32 uf for less than $100. but they have illusive to find. you can find them if your consistant on the searches.

Good luck.
h2ocommuter.

[Rosphere]

Heading towards a Don Smith resonance replication, i face huge problems regarding the L1 cap.

Do you know any cap(s), able to withstand say 4Kv at 50 amps, with Dv/Dt 2-3 Kv range /us, operated at 100 Khz with insignificant dissipation factor (i.e. not heat), and resonably priced?

From a preliminary research, the only decent for LC tank circuit, are the doornob types, but those are quite small capacitances as 1000, 2000 or at best 4700 pf.

For a typical don circuit, 42 of them are required! lol

Perhaps you could make your own?

[baroutologos]

Heading towards a Don Smith resonance replication, i face huge problems regarding the L1 cap.

Do you know any cap(s), able to withstand say 4Kv at 50 amps, with Dv/Dt 2-3 Kv range /us, operated at 100 Khz with insignificant dissipation factor (i.e. not heat), and resonably priced?

From a preliminary research, the only decent for LC tank circuit, are the doornob types, but those are quite small capacitances as 1000, 2000 or at best 4700 pf.

For a typical don circuit, 42 of them are required! lol

[Rosphere]

I have ordered the parts necessary to complete the device Mr. Smith describes in Videos 4 and 5. Parts will be here tomorrow and I will be working on the project every day all day until it is completed. I have built both my coils already and await my power supply and a few other things. I will post pictures of what I am building starting tomorrow. ...

@Turion,

Please update us with your progress.

Thank you,
Rosphere

[baroutologos]

@ Amigo

Brilliant spoken my friend. I ave spotted several mistakes Patrick Kelly have made myself so no use in mention them.

@Boguslaw,

Parametrics or no, resonance for sure is in play. In any case, parametrics IMo have nothing to do with enegy extraction (perhaps only helpful)

Our best bet, is resonance to disturb ambient magnetic/ether/electrons/telluric/nuclear you name what component and in turn this to offer energy.

[boguslaw]

I have ALREADY TOLD YOU TESLA RESONANCE!

w:=2.4
A:=0.16
not a perfect because output is slowing and speeding up periodically (like pulsating TPU output huh?) and 10 seconds is required to make it work (again TPU)

[boguslaw]

Thought you guys can use this ?

Just my imput?

Mark 2 - RLC Simulation

arghhh arghhh

I said you all you have to know about primary.
Parametric Resonance

Adjust parameters to make it ROTATE !
In electrical therms Imho it means that transmitter is producing continuously radiation in space (EM or scalar) much greater then input energy.