Donald Smith Devices too good to be true

[level]

Hello level,

I had just started a reply to say no I hadn't used the GDT that way when I remembered the post of my old build recently. go to page#292 and my post #8735 and pull up the thumbnail and you will see the pink glow of the GDT between two smoothing caps and it is in series!

that build was not entirely successful as I stated but the success was not hampered in any means by the operation of the GDT. I believe at that time their was a total of 8ma across it. even tho the success was limited as far as output through L2 was concerned you can see that there was voltage through L2 by the orange neon bulb attached to L2 terminal strip. my problem then was my driver and cap values for L1. hope this helps. LOL

as always,mike,onward!

Thanks Clarence. I will take a look at those older posts of yours. I just posted some scope screen shots of my test results with this arrangement. Did not work out very well for me, but probably it was because I was using a 60 Hz NST to drive the primary tank circuit that was resonant at 106kHz. It would seem to make sense that if you drive the primary tank circuit at the exact same frequency that it is resonant at it would energize the tank circuit much better. I will give that a try next to compare the difference, but I think that would likely be what needs to be done. It's interesting to compare the performance results anyway, just to see how much of a difference it makes.

[hotrod68r]

hi all.on the point of lead lengths affecting the coil length i saw some thing somewhere,possibly in patrick kelly's updated info,where a change in wire diameter,(like a factor of 3 or 4),at the coil to lead junctions was said to effectively lock in the coil length.

[level]

hi all.on the point of lead lengths affecting the coil length i saw some thing somewhere,possibly in patrick kelly's updated info,where a change in wire diameter,(like a factor of 3 or 4),at the coil to lead junctions was said to effectively lock in the coil length.

Interesting....

[janost]

Now with some minor adjustments my JT only draws 6.6mA@6V and 12.8mA@12V.

At 6V the pulse on the secondary is over 260V when powered by 6V and 20Hz pulserate.

It will run 680 hours nonstop on my battery.

Adding a capacitor on the feedbackcoil actually raised the feedback current.

[ritualsiniestro]

Ritualsiniestro, this is the way that Don Smith had his Gas Discharge Tube (sparkgap) wired in on his dual output coil demonstration board. See attached. I intend to give this a try with the primary tuned for exact resonance to match the secondary resonant frequency to see how it compares to the other standard ways which I mentioned above that tesla coils are commonly driven. I will report my results back here.

Clarence, this is the Don Smith GDT arrangement I was referring to. Just want to be sure I understand you correctly. Have you tested with this particular GDT arrangement, and if so, did it give you good results?

Ok as i can see, this arrangement is the same i posted in first diagram, say C,L in parallel and then spark-gap in series. I consider the source is the NST, and the middle connection being the null return (not connected to earth on this one)

Lets see an image is better than thousand words:



is the same that this one:



three diagrams, same circuit.

Ok clarence, i assume that a resonance is created here with a LC combination, so definitely we need C and we need L, without C is impossible to match a resonance for a given frequency. That statement is clear as water now.

[clarence]

Interesting....

Hello level,

Clarence,

as I said the leads applied to the coil wire length ends is a different subject altogether. in patricks earlier chapter three updates it was shown by a mr Richard Quick that the ENDS of the coil wire lengths should be perfectly flat or as near as possible- don't cut them with linemens pliers per say and expect that to work. what is at work in the coil is a standing wave which is reflected back when it hits the flat end of the coil wire. if the end is not flat or distorted then the reflection or part or most of it is distorted and some or most of it may travel into the lead wire and screwup the inductance and capacitance values that the coil is depending on for resonance! in other words the standing wave needs to bounce back and forth without any interference from outside the coil.

in addition to consideration of a flat surface on the coil wire ends any leads attached to the coil should be of an exaggerated larger or smaller size wire (whichever is appropriate for the need) as this interrupts the standing wave path and it is reflected back as needed. this is what protects the integrity of the resonance of the coil.----- all of this is what I perceived when I contacted the Richard Quick source as the earlier PJK Chapter #3 update on Dons devices advised.

I just received an e-mail back from Patrick and evidently he said that particular info is not included in his last update anymore. he said he has had so little to comeforth about any of Don's devices he is considering deleting most of his device information and putting focus on other types of devices! be warned!!!!! you can check back thru his updates and find the Quick information if you desire. I have just tried to give you the essence of what is involved as best as I could explain it. LOL

as always, mike, onward!

[Dave45]

spark gaps

It is well-known that explosive emission plasma [1] serves
as an almost innite source of electrons.

http://physics.technion.ac.il/~plasma/publications/EPJ_D_15_345.pdf

[hotrod68r]

cheers clarence.you explained it better than me.

[Gedfire]

Janost JT

Now with some minor adjustments my JT only draws 6.6mA@6V and 12.8mA@12V.

At 6V the pulse on the secondary is over 260V when powered by 6V and 20Hz pulserate.

It will run 680 hours nonstop on my battery.

Adding a capacitor on the feedbackcoil actually raised the feedback current.

Hello Janost,

Like were you are going with this.I would like to know the frequency and duty cycle you are using at the mentioned voltages.I see 20hz at 6v so far.Especially at the minimum amperage you have stated.

Can you make it a variable frequency joule thief? This to see the effect on voltage and amperage.


Ged.

[hotrod68r]

hi ged.i've been playing with that circuit.i use a transistor instead of a mosfet and a 100k lin.vr and the frequency varies a lot with adjustment to vr1 2-50k,some times more with circuit fiddles.i think it's quite an achievement to direct pulses back to the drive battery with such a simple circuit.kudos to janost.here's a bare bones schematic.try/add caps here and there and the return versus input deal gets better.good clean fun with one volt or more..and come to think of it with the diode taken off the - rail the spiky output might be useful for driving another coil system off the +rail,instead of putting some back in the battery.sorry if i been rude and butted in here.

[janost]

Hello Janost,

Like were you are going with this.I would like to know the frequency and duty cycle you are using at the mentioned voltages.I see 20hz at 6v so far.Especially at the minimum amperage you have stated.

Can you make it a variable frequency joule thief? This to see the effect on voltage and amperage.


Ged.

I'm using a line transformer for the coil and is has a laminated ironcore so the frequency is low.
It varies between 50-80Hz depending on drive voltage. The 330nF cap droped to 20Hz and a duty cycle of about 5%.

It it actually the coil that sets the operating frequency with a period set by the LR-time to saturation.

When the primary coil saturates the current is 0.33A through it and when the mosfet switches off it transformes a 260v pulse trough the secondary like a flyback converter.

I intend to put a cap and a sparkgap (SIDAC) on the secondary like a tesla to resonate a stepdown coil.

[janost]

hi ged.i've been playing with that circuit.i use a transistor instead of a mosfet and a 100k lin.vr and the frequency varies a lot with adjustment to vr1 2-50k,some times more with circuit fiddles.i think it's quite an achievement to direct pulses back to the drive battery with such a simple circuit.kudos to janost.here's my schematic.sorry if i been rude and butted in.

No worries,
I wouldnt put schematic here if it wasnt public domain

The diode has a forward voltage drop of 0.7v and it should work even better with a diode that has a smaller drop.

[stupify12]

Amplifying Resonance vs Decaying Resonance

Hey stupify12

Very Impressive. I see youve read Teasls, Writings And Researcghes book. People say all the time Tesla never had any free energy devices. They just look at your circuit or others like it and assume the power supply is just not shown. But if they had really read the book they would understand the ***POWER**** is coming from the Ether,Zero point, Ambient what ever. And Tesla put it out in plain site on how to get all the energy you need. I am currently on the last few chapters,but if you can get past some of the borring parts there is alot of Free Energy Info there. Its just hidden in plain site. Anyway, congrats on paying attention.

Best Regards on your quest
SLOW-N-EASY

P.S. The answer on how Tesla powered his electric car is in the XXIX chapter. He just stepped up the voltage from the ether with the transisters of that era from the electronics store with 2 large rods as antennas.

Hello Slow and Easy

Just assumptions. Firstly people think Tesla's capacitor are more like this modern days capacitor, Actually Tesla magnifying resonance was achieved by vibrating(Tesla's terminology) not just the Secondary coil but also the Capacitor(custom made jars), when the energy discharge to the coil, the capacitor is already recharged by the electromagnetic induction of the coil. This is not speculations, i have dismantled a old Ultrasonic fogger that still has tube components- vacuum tube amplifier,The ultrasonic fogger confirm what Vladimir Utkins writings.

Im still on the process of experimenting what i have read from the Tesla's Writings and Research book. The circuit i posted is a 12volt input to the coil + cap tank combination 1.5uf 1000v - from microwave oven, Output 600v approx on each end. It was controlled by the relay switch which turn off when the relay switch is pulled down by the electormagnet of the core. Primary is about 80 turns, the Two secondary is about 160 turns approx on the same core .If u have read the book, you will understand the history of the Tesla coil,eliminating the rotating magnet in the generator,replacing it with a none moving Tank circuit.

Tesla coil before it was aircored, works like a induction transformer when short circuiting the output it interfers with the Generator/Primary. That made him the Spark gap - Spark interupter(same as the relay configuration ive made) .The 2 secondary coil works as a 1 coil- you can still short circuit them (spark /arc to each other), What janost found about his coil configuration, was already been tested by me, when u hook it in wrong Magnetic field(Rotating Magnetic Field)-( Tank circuit =reversing magnetic field) you will only get 60v.

[level]

in addition to consideration of a flat surface on the coil wire ends any leads attached to the coil should be of an exaggerated larger or smaller size wire (whichever is appropriate for the need) as this interrupts the standing wave path and it is reflected back as needed. this is what protects the integrity of the resonance of the coil.----- all of this is what I perceived when I contacted the Richard Quick source as the earlier PJK Chapter #3 update on Dons devices advised.

Hi Clarence. Thanks for the info and OK on all. I would guess that as long as a person is keeping lead lengths to tuned circuit components to as short a length as is reasonable and practical, that this would be sufficient to minimize untuning resonant circuits too much. At any rate, you still have to fine tune the circuit after construction to optimize to the desired resonant frequency, as there are various factors that can contribute to altering the resonant frequency and performance of a tuned circuit. I suppose it wouldn't be hard to set up an experiment to test this concept however, to see how much of an impact it has on performance.

[level]

Im still on the process of experimenting what i have read from the Tesla's Writings and Research book. The circuit i posted is a 12volt input to the coil + cap tank combination 1.5uf 1000v - from microwave oven, Output 600v approx on each end. It was controlled by the relay switch which turn off when the relay switch is pulled down by the electormagnet of the core. Primary is about 80 turns, the Two secondary is about 160 turns approx on the same core .If u have read the book, you will understand the history of the Tesla coil,eliminating the rotating magnet in the generator,replacing it with a none moving Tank circuit.

Hi stupify12. You previously mentioned that you believe you can harvest much energy from this transformer configuration. Have you been able to do so, or do you just mean this theoretically? I would be interested to hear more about your circuit configuration and experimental results.