I'm done

I placed a diode over the choke to redirect the positive back emf back into the capacitor bank.
That works fine. no  big voltage spikes anymore.

BUT again, the HC PSU is now drawing 1A at a voltage of less then 2 V
This should not happen. but it does.
and I do not understand why.

I can barely produce any resonant current with this.

I'm done.

One more video to sum it all up.
that is it.

finito

cant give up.

Returned to just one mosfet.

Now I do see what I wanted to reproduce.

current from the hc psu, is reduced, when High voltage is increased. meanwhile current in the coil is also increased from the high voltage, while still reducing current from the hc psu.

So A diode parallel over the choke wont work.

But My CMC has 2 chokes on one core.
So one choke I use to choke the current. but it gives a positive spike.

But the other core also sits on the same magnetic field of the same core.
So I can use that winding to discharge the magnetic field back into the capacitor of the dc power supply.
To Do this I ground the correct side of this winding to neutral,
 to give a opposite polarity spike on the other side of the coil.
This negative spike is then fed back via a diode into the power supply.

scope shows both the spikes of both chokes. it now only needs a diode.

oh wait. no I need two possitive spikes, else the diode will pass all the dc positive voltage to neutral.
So both chokes need to produce a positive spike.
solution is simple. ground the other side of the choke to neutral, and place the diode on the other end

this is with 0.03A and 16.6V fairly good.
now I will place the diode, to pass the positive voltage impulse of one winding back into the psu.
This should reduce the current draw as the magnetic energy is now recycled.
fingers crossed

My mixer really doesnt like these high voltage spikes. audio stopped again. luckily a reset fixes the mixer again.

somehow it work till a certain voltage, but higher then that It doesn work anymore.
current of the psu then is even higher.
spike reaches 373V at the choke, with 15.6Vdc from the psu.

my guess: the diode isn't up to the task.
current probably to high. lets put in another diode
 this was a mur440. 4 amp 400v I believe

i now used a mur8100 capable of 8A 1000V
this was at 0.01A 14,5V
again a spike is passed,
at lower voltage levels there is only a oscillation. which also isnt good. but maybe a resistor could dampen this.
8A also isnt good enough.

lets see If I can find a higher amp ultra fast diode. voltages are fairly low... so
still a chance this will work

I found a TVS diode, this will limit the voltage of the spike to around 400V which is OK

yes TVS works.
still the audio stops from the HIGH dV/dt (displacement currents!)
so not an ideal solution. very noisy.
Better find a proper high current fast diode.
or, a lower voltage TVS which can also handle more currents.

this was at around 19V 0.06A on the hc psu

If I pushed the voltage higher, I could see it being limited by the TVS, but with a lot of noise. and my probe is not designed for those voltages

if all else fails.... could I saturate the choke core, with the second winding? giving it a DC charge? So the other coil could only pass positive voltage.
no because the spike is also positive.
but the magnetic field would not collapse to produce the spike if dc is kept running... hmm
fun idea

this is measured at the drain side of the coil,
NO RINGING!
that is good.
AND this was with 20V 0.05V

above, the tvs starts working, so If I stay below... nope. the HV coil will amplify this spike.

it isnt bad. but I like my audio (and labtop) to keep working.

so lets get a lower voltage TVS diode

I am so happy with the result of today

again it was very hard to push through.
I needed to break to open up.

But i did it. I found a way to create a voltage source with low current.

this will make the final part possible .

I might need a lower inductance choke to really get the magnetic current going.

right now its 1W at 20V, I can push towards 32V which will give A little bit more current .

but it is al about the voltage . the sudden change is now possible.

the demand for current can now be made while restricting the current source.
the only source available will be the displacement current from the HV coil.

so when the voltage goes feom positive to negative on the HV coil, so it should do on the HC coil (gate high=neutral)

but the magnetic resonant current might need to be present a little bit. so that is why Inmight need a different choke with less inductance.

one mosfet. a tvs diode of 35V a choke of around 2mH

now I can continue .

Last summer I amplified the capacitor dielectric displacement current.

but now I will show how to amplify the magnetic resonant current of a coil.

swirching at zero reactance will allow infinite high currents to flow, only limited by resistance of the wires

I found a 36V TVS diode p1.5ke36A unipolar 36V 1500W do-201
and put it in.
as always high hopes cause big disappointments.

crap

I really need a ultra fast high current diode. 20nS or faster

I just measured with one moesfet, but saw the wrong change in voltage (orange) so, I changed to the other mosfet, which should give a 180 degrees phase reversal.
but
it doesnt
the phase is the same.
I have seen this before.

this was with 13.5V on the HC psu
orange shows the voltage at the drain.
somhow the signal was improved by powering the HV coil. Altough it does give a strange dip which is tunable by the amount of voltage on the HV coil

green current is flat .
So I do think I need less inductance to get some resonance going that can then be amplfied.
But first...
I need to get that phase corrected.

blue is the gate of the other mosfet so It should be read inverted. low=high and high=low
I still dont know why the phase jumps 180 degrees.

it is bad on so manny levels

If I make a choke with thinner wire, more resistance that will dampen the oscillations.
but a littl eless inductance, to provide more current to the resonance

OK I made some mistakes that I corrected.
The other mosfet shows the current being dimmed, So I switched back to the other mosfet, and indeed it does amplify the current.

I measured current on the wrong side of the coil. It should be measured on the mosfet side, not the choke side.
Now current is present.

Also, the choke spike somehow disappears when the voltage coil is powered so that is great. the voltage curve really changes at the drain (orange) when the voltage (yellow) is made higher. GOOD

psu, see photo, left is HC- right is HV- coil

blue is the gate of the right mosfet, high is turned on, so coil is switched to neutral (lower voltage)
Orange shows voltage on the drain which is the HC DC voltage.

all works now.
still no lamp glow not even faint.

this is with a bit more power on both psu's
Voltage coil starts hissing (ozone) when going higher
yellow voltage is again indirectly measured, and is around 3,5 times higher (9kV pp)

now the HC psu does show more amps. 0.33A at 23.3V dc
it appears as if the max negative current (green) is mostly amplified

the orange dip reminds me of the anomaly I had with my other circuit. That was due to bad tuning, of the impedance relationship of the 2 resonant coils. one should be high, the other low.

If I reduce the HV psu then the spike returns,
the current also diminishes and starts phase shifting.
So some things aren't perfectly aligned yet.

I would love to know where that current appears from on the HC psu

So I now again use a 49% duty with the single mosfet.
What If I switch it at 25% duty?
Then one switch in voltage is for the current coil at the zero reactance point.
While the other switch in voltage is at the infinite reactance point, where the high voltage is at its maximum.
to amplify the high voltage present at the time of switching? hmm

dual use. to amplify both the resonant systems. both e the voltage, the displacement current and magnetic current.
hmmm


the neutral voltage would then again be switched to positive. the choke would only have half the amount of energy changed in it magnetic field which also would be better.
The voltage then jump up to more positive, while the high voltage is at its maximum positive already. thus a discharge, but where does this charge go? into the load? or amplify the voltage to even higher levels. depends on having a load or not present. A diode could make it invisible. for that half of the cycle.

I have been playing with the idea of having a diode before the load, so that only one half of the cycle sees the resistance.
the positive voltage half wave, is where al the energy action is, so no load should be present to keep the reactance and impedance as low as posible.
So a diode that only passes the negative cycle to the load.

I have changed the duty cycle (blue) of the gate to 25%.
at first when I turned it on, the signal was again 180 degrees out of phase.
I turned it off and on again, and then it looked like the right phase setting.

the drain voltage (orange) wobbles all over the place.
and the current (green) is barely present.

so this isnt good.**

edit: I had the current probe in the 0.02 position, while the scope had the 0.2v/a so the current actually is 10x higher.
I'll make another scope shot.
this was with 20.8V 0.02A on the HC psu
and 3.6V with 2.77 A on the HV psu

This is the correct measurement.
I have turned off the HC psu, 0v 0A
2,77A and 3.6V on the HV coil (10W giving 2kv pp)

Note the current is now present 1,2App (green)
but also, a voltage on the drain (orange) while I dont even have the psu on for the voltage.
so that explains why everything wobbles. or, just a little bit,
as the voltage must becoming from the high voltage coil.
Still vague why that voltage is not constant like the HV is

What I did next is turn up the voltage of the HC psu.
It basically doesn't do anything, until the voltage is high enough to exceed the already present voltage.
Then I do see the current amplified, but also I hear my audio crackling madly. So very intense displacement current must be fired.
I need to protect myself from this, or else my mental focus will disappear again.

intersting to note, that the orange voltage changes when the yellow  voltage reaches maximum. this is when the displacement current changes polarity


edit: again! wrong phase lets redo this

ok now the phase is right
25duty4 is without hc psu on
hv psu is now 2.84A with 3.6V

21.4V 0.15A on the PSU of the HC coil gave the result of 25duty5

a major change in the negative cycle of the green current
the turn off of the mosfet (blue low) increases the voltage at the drain (orange)
causing strange behaviour of the current.

the green current after turn on of the mosfet (blue high) increases the drain voltage to zero, gives a steeper, higher current curve.
On dont think 25% is a good idea.
lets tune it back, to 49%

I will also, attach the choke to the series connection again, as it serves as a zero voltage reference point. no real big current should flow there, and maybe that is why the choke shows 0.15A.
Also that choke current was 0.2 and dropped to 0.15. for reasons unknown

46% duty is the max I could now dial in due to the limitations of the tl494

0.08A 20.6V on the HC psu, just enough to see some effect on the current.

If voltage Increased the current does also magnify, but the max phase shifts to the left.
so I should retuned the current wave.

So the HV yellow starts inducing the current as it should.

But when I add the change in voltage on the hc coil, the current starts shifting which it should not do.