#### evostars

##### back to the test.
close coupled a L3 phi ratio coil equal wire lenght, to l2 and loaded it with a 21W 12V light bulb.

Fres = 122 kHz
impulse = -332V
L2=196Vpp
lamp is medium dimmed on
DC= 0.98A 15.9V

would love to keep the impulse at the same voltage of - 500V but... the lamp is much to bright at those levels. - 400V works. 1.21A @ 19.2V =23W.

probably will have to vary the voltages during testing...

Ill just play until I get it.
##### impulse speed
with 500pF parallel over L1 and a - 400V impulse at 121.84 kHz,
the impulse duration is only 700nS
this is probably due to the low resistance.
Very happy with this.
##### Indicator for longitudinal pressure
The circuit  produces an impulse, on one end of the bifilar coil. The impulse is from a back emf (L1), and is injected into the series resonant L2 coil.
So the impulse enters on end of the coil presenting a sudden negative voltage, while the other end of the coil is maximum positive voltage from resonance, giving a huge sudden change in voltage over the coil, creating longitudinal pressure.

This series resonance produces very high currents and voltages, from the positive power supply AND from the impulse. (the resonant coil is powered from BOTH ends)

I feel this powering from both ends, needs to be tuned, so the impulse is balanced with the positive power supply, giving a maximum longitudinal impulse. Just resonance, and just a impulse isn't enough. It needs to be at the right frequency. Probably related to the copper mass of the coil.

When this is tuned properly, the dielectric longitudinal impulse pressure wave is maximal, and is able to elevate a aluminum foil above the coil.
If not properly tuned, the foil will not float, but will be heated up by the eddy currents of the changing high currents/magnetic field.

So the Idea is, to keep tuning the coil, until the effect is observed.
Meanwhile,
input current and voltage can be measured, to give input power,

The impulse voltage needs to be at the same voltage for each test. If the frequency goes up, more voltage is needed to produce the same back emf voltage and vice versa, lower frequencies need lower voltages.

The coil will need to be the same each time. once we find the right frequency, where the aluminium foil floats,
We can do the test all over again, with a different coil, that has the same mass, but has a bigger center hole, that changes the capacitance/inductance of the coil, so we can see if it plays a role in tuning. (or not).

then if the mass really is the key, we test again, with a different mass of copper coil. If the realtion ship is found, this would make life easier in the future. But thats to soon...

First make a test setup, with enough load on L2, to keep the voltages down, and choose an impulse voltage.

##### Re: advancing the Solid state Tesla hairpin circuit
did 5 tests, increased series resonant capacitance from 20 to 60nF
Nothing conclusive yet.
21W Lamp with 30W input got very bright... no wonder...

L1=L2=L3= 1.5mm2 9.246 meter 2x ; 0.3ohm ; 0.22mH  ; 492pF
L2 and L3 close coupled. L1 far away
L3 not grounded, so both leads show same voltage sine, that has a "dip" in it from the impulse.

Think I need to make smaller steps, but first I need to analyse the data, see if I notice something

##### Re: advancing the Solid state Tesla hairpin circuit
after looking at the data, I probably need to go lower in frequency, and thus add more capacitance.
notice the voltage ratio of L2 and L3 at 60nf.
its going up, thats good.

I dont want to drop below a certain voltage or else I will loose by buck converter.

to do so I will add capacity to L1, prolonging the impulse duration, which in turn lowers yhe impulse voltage, so I can put more dc voltage in, and still have a - 400V impulse

in this first test I had  700nS impulse from using 500pF over L1. will add 330pF making it 830pF
##### Re: advancing the Solid state Tesla hairpin circuit
I didn't have 330pF so I added 1nF to the L1 coil, together with the 500pF it makes 1.5nF, resulting in a 1uS duration impulse.

I did several tests from 60nF to 100nF, but nothing conclusive.

Then I tried to make sense of it, and make some logic.
I concluded: the Positive voltage of the resonant sine, on one end of the coil,
Together with the negative voltage of the impulse on the other end of the coil,
Together produce the longitudinal pressure.

But If one is only +100V and the other is -400 volt, the "zero" wont be in the middle.
To get the "zero" in the middle, both ends need to have the same voltgage.
So the resonant sine needs to be 800V peak to peak to match the -400V impulse.
From the data I have, I need a much lower capacitance less than 10, to get 800Vpp.
OR I could use a coil with more capacitance and inductance, to keep the frequency down.

So: use a larger capacitance/inductance coil, and tune, for equal voltage on both ends of the L2 coil.
##### tested with equal voltage
used the big coil, that I normally used for the output (radiant power video) for L2:
0.82mH 1.2 Ohm 804pF 20M of 0.75mm2
L3 is 9,264M 1.5mm2  Phi ratio coil, loose coupled to L2 by 15mm separated. (L2 and L3 have equal mass copper)

tuned L2 with 9nF series capacitance.
Fres= 78,94 kHz
DC power in: 0.797A 20.05V (=16W of which 2,5W are for the circuit power)
L2: 788Vpp @ 1.76App
L3: 222Vpp  @ 3.82App (loaded with 12v 21W lamp, medium yellow bright)
impulse: -400V 1uS

The L3 coil is not grounded, only measured the inside rim lead to the lamp. It shows a -46V dip.

Newfile5: yellow= 10:1 probe of inside rim resonant L2/9nF  ;  blue=10:1 impulse probed on the outside rim of L2

Newfile6: yellow=10:1 inside rim of L3 (not grounded) blue=10:1 impulse probed on the outside rim of L2.

I tuned for equal voltage difference, but the impulse is just after the resonant sine reaches its peak, so I should tune again.
This test is done with 500pF over L1, I could make it smaller in 100pF steps, to make the impulse faster (shorter in duration). moving it closer to the resonant voltage peak.

Amazing that 16-2.5=13.5W power into the coil, can make that 21W lamp glow that bright.
And then to think, L3 isn't even tuned yet, by a parallel capacitor...

L3 is not grounded, and shows a sine on both ends (both sides of the lamp). funny thing, is these sine waves, are in phase. Doesn't make sense to me. If I connect the outer rim of L3 to ground, the voltage drops, but the lamp doesn't change brightness!
Very strange.

##### strange delay
something else I noticed, is the lamp on L3 slowly comes on.
The L2 resonance is instant, but the L3 lamp slowly start lighting up and then becomes bright.
There is a delay somehow. very strange

#### Lynx

##### Re: advancing the Solid state Tesla hairpin circuit
Quote from evostars on May 31st, 02:05 PM
something else I noticed, is the lamp on L3 slowly comes on.
The L2 resonance is instant, but the L3 lamp slowly start lighting up and then becomes bright.
There is a delay somehow. very strange
So either it's something very fundamental, I.E easily explained, which makes for the delay, or you've found some new novel way of powering a light bulb.

It would be interesting to see if the total power input to the circuit, as measured using say a current shunt in series with one of the input power supply wires, is equal to or greater than the sum of the power going to the lamps as the lamps (active) power are in the tens of watts ballpark range, not milliwatts or something like that.

Should it be the case that you see lower active overall power input to the circuit compared to the lamps power output then it's time to up the circuit a bit and connect active power meters to register both input power aswell as all the lamp output powers and.......see how the numbers adds up……..or not ;-)

#### evostars

##### Re: advancing the Solid state Tesla hairpin circuit
To soon for that Lynx, I could tune for parallel resonance and measure, but...
hmm maybe you are right.

but first I want to tune L2 so it can levitate aluminum foil.
I think I need pretty high voltages for that.

like this, but from the impulse combined with series resonance of L2
I feel there is a specific frequency where the coil circulates the fields and gives this action

https://youtu.be/zE50c7t4Bmo

#### haxar

##### Re: advancing the Solid state Tesla hairpin circuit
Quote from evostars on June 1st, 02:37 AM
I feel there is a specific frequency where the coil circulates the fields and gives this action
You could influence the field even further by generating propulsion against itself, by adding permanent magnets that spin around the perimeter of a charged plate to produce thrust.

chuff1 helped to test this theory:

Discord, search: "spinning magnet"

#### evostars

##### Re: advancing the Solid state Tesla hairpin circuit
Quote from haxar on June 1st, 03:58 AM
You could influence the field even further by generating propulsion against itself, by adding permanent magnets that spin around the perimeter of a charged plate to produce thrust.

chuff1 helped to test this theory:

Discord, search: "spinning magnet"
I could not find the documents you referred to
##### Moving aluminum foil test setup
I want to use the Phi ratio coils again.
The center hole might be vital.

Also I want to place the L2 coil vertical, and hang aluminum foil on each side of the center hole.

this way I can see if there is maybe one side that pushes and the other that pulls.

And as high voltage seems to be key, I need small capacitance, for high resonant sine waves.

this means a bigger coil to keep th frequency low enough.

also need to measure phase shift between voltage and current.

One thing is nice, I can close couple l2 and l3. and still have high resonant voltages.
this calls for a 230V lamp load on L3, and parallel tuning.
##### coil jig
Since I need bigger coils (higher voltage but lower frequency).
I want to make a coil winding jig, so each coil is closely matched.
I intend to use 20M 1.5mm2 pure oxygen free copper speaker wire.

I noticed the outer windings are so long, the extra 10m wont make it that much bigger.

It will be phi ratio coils, so I need to play with the size of the hole to make it prefect.
Once I know th diameter,
I can glue a 3d printed center column on a whitboard, to roll around.

a white board is helpfull because the wiredoesn't stick to it, when wimding.
##### Re: advancing the Solid state Tesla hairpin circuit
25 meter 1.5mm2 wire gives a 34cm diameter.

20m =31 cm

16.66 =28cm

the wire comes in rolls of 50m
I think I'll use 12.5m per coil. so I get 4 out of one roll. It gives a diameter of around 25cm. Thats still workable.
need to adjuat for phi ratio but, close enough
##### Re: advancing the Solid state Tesla hairpin circuit
12.5m 1.5mm2
24cm diameter
5.5cm inner hole diameter
11cm coil width from hole to outer rim

phi ratio gives a much to big center hole. just doesn't feel right.
1/2 phi would be better.
with 11cm coil width its 3.5cm inner hole
##### 12.5m 1.5mm2 5.7cm diameter
for 12.5m 1.5mm2 speaker wire
the best inner diameter is 5.9cm
this gives around 9.5cm coil width
and is a 1: 1/2 phi ratio.

but more importantly. it feels right

13cm start length for bridging the wire
18.2cm for first loop gives the right center hole
##### Re: advancing the Solid state Tesla hairpin circuit
rolled 2 equal coils. bit hot, 30C so the coils are gettimg sticky. taped some paper to the whiteboard so it slided the coil better.
time to heat up the hotglue gun
##### Re: advancing the Solid state Tesla hairpin circuit
Done!
pfew... took more time and energy than I hoped. but... they are good.

That picture makes me think of something.
:P
##### New coil values
739pF    0.34 mH    0.5 Ohm
and
725pF    0.35mH    0.5  Ohm

resistance might drop a bit if soldered.

Close matched! they'll resonate at the same frequency.

both made from 12.5 meter 1.5mm2 speaker wire. oxygen free pure copper.
24cm diameter
5.8cm inner hole diameter.
9.1 cm coil width.

inner diameter made by 13cm free end, then 18.2cm into a circle
##### Coil windings of two bifilar pancakes as capacitor plates
Since the coils are made of speaker wire, one bifilar coil is 2 stacked windings.
Since only one end is resonant, one side has  the highest voltages differences.

since the series/parallel resonance of the 2 coils are out of phase,
The coils act as capacitor plates,
so it makes sense to keep the resonant sides of both coils together. they'll act as one resonant system.

Since L1 is fed with a square wave, it makes sense to distance it from the sine wave of L3, but thats not for now. to soon...

#### patrick1

##### Re: advancing the Solid state Tesla hairpin circuit
hmm very good build sir, -  aliens watching my wind mine from 1/4inch tube would have thought i was a gorilla for my usage of clamps and milk creates, - i swear i was about too set off a nuke the whole time

#### evostars

##### L2 inphase current and voltage possible?
Added hookup cables, and used the new coils as L1 and L2.
tuned L2 with 36nF and got 49Khz.
It works so far.

Since adding aluminum foil, changes capacitance, and thus the resonant frequency, I'm thinking of using the "less" resonant side of the coil for the foil, but still think best is to put it vertical and use both sides.

Other thing is, I have seen L3 become in phase with voltage and current, when it lights up the lamp. Very awesome.

But now I wonder, can L2 by itself, become in phase in voltage and current, by the tuning of the impulse, into the resonant L2 coil???

Again, this asks for extensive testing...

after a hot 31C day, now thunder and lightning start. Love it
:emperor: