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Author Topic: Radiant power from Solid state Tesla hairpin circuit  (Read 37369 times)

Offline sollaris1989

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #90 on: September 15, 2020, 10:37:50 PM »
Hello guys , Hallo @hartiberlin .
Thank you for your good work.
I am following you guys,and I have some questions about the  IXDN604 IC.
I can also use my Signal Generator direct to the Gate of the power Mosfet, but as If I understood corectly from @Evostar aka IVo on youtube, if you apply Voltage and Amps to the gate of the Mosfet,it will switch very very fast (ns range)
 and the mosfet will not heat that much.
What component / action decides if the output of the ic is 0.3 A or 4 Amps for example?
the IC above has a maximum output of 4 A......how do we get there..how we do not get there?

Also I have seen at you guys Gate drivers IC;s with power output of 10 Amps....
From a realistic point of view....how much Power does a POWER Mosfet needs at the gate to fully swich ON?

Also a see a resistor and a diode in paralel betwwen the IC and the gate of the Mosfet...What is the purpose of those 2 components.

Thanks and have a nice day guys !
Alles Gute aus Saarland.





Free Energy | searching for free energy and discussing free energy


Offline evostars

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #91 on: September 18, 2020, 09:07:45 PM »
gate resistor restricts amount of current going into the gate. ohms law applies.
also resistance dampens the ringing of the gate circuit (best to keep the loop small by placing gate IC close to gate. and resistance close to gate.

The discharge of the gate goes the other direction and the diode bypasses the resistance, making turn off even faster.
 
using external power wont work  as it is referenced to earth ground.

gate driver should be referenced to source. that is why battery is used. battery floats, referenced to source.

But I found out al this isnt needed.
positive impulses also work. (low side switch, which dos not need a hsm/isolated gate driver)

And the whole DC offset is completely unnecessary.

Offline evostars

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #92 on: September 28, 2020, 12:25:24 PM »
after extensive testing,
I came to the following conclusions:

DC offset, is totally useless. I will not use it anymore, and this also makes it safer to work.

Positive impulse works just as good (even better) as a negative impulse.
This means, you can use a low side switch, with out isolated gate driver (easier to build)
 and get the same results

As both polarity impulses work, I will use both.
This is done in a half bridge circuit.
A symmetric power supply is used (earth ground in the middle of positive and negative voltage supply)
Mosfets won't work, as they have body diodes.
So I will need to find the fastest IGBT's (slower turn off than mosfet, due to tail)
that also can withstand high voltages.
But it must be IGBT's Without body diodes. This makes them vulnerable.
So I will protect them with TVS diodes (2 tvs diodes in series if needed).

Again will need 2 isolated gate drivers, this time with negative gate voltage possibility.

L1 produces alternating positive and negative impulses.
L2 is series resonant with C and provides a low impedance path to ground for the impulses of L1

positive impulse on L2 positive voltage maximum
negative impulse on L2 negative voltage maximum
So one period (sine wave) of L2 will have 2 impulses.

L2 is the Primary for L3 (not drawn)
L1 and L2 are close coupled, pancake coils.
L2 is bifilar

Please reply or PM if you know a proper IGBT that will work around 40-80 KHz
 and can withstand 1200V, with fast turn off time and no body diode.
This is essential for impulse generation

Free Energy | searching for free energy and discussing free energy

Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #92 on: September 28, 2020, 12:25:24 PM »
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Offline evostars

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radiant half bridge circuit
« Reply #93 on: October 19, 2020, 12:49:00 PM »
Stopped using IGBT's, do not believe they are useful. due to their slow turnoff time.

found a way to beat the body diode problem of the mosfet half bridge. it works now.
testing it. I put a diode above the high side mosfet, and below the low side mosfet, to block the impulses that pass through the body diodes. I now have both polarity impulses on both polarity voltage maximums of the series resonant primary coil.

Also designed a pcb for dual isolated gate drive, for the symmetric powered half bridge. Testing that will commence soon. If it is worthy, I will share. It has no pulse transformer, and no battery. operated by isolated DC DC converter

It's getting pretty complicated. Learned so much. At the same time with all the insight it becomes simple.
The impulses, amplify the current of the series resonant coil. When close coupled to L1, it creates a feedback loop.

Yellow= L2 impulsed series resonant voltage (primary
Green= L2 series resonant current (primary)
Orange= L3 secondary voltage

Offline AlienGrey

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #94 on: October 20, 2020, 10:43:33 PM »
Hi Evostars I must say you have come a long way with your development,
 I have sort of being following you work, I under stand you have got the build down to 2 pancake coils, are they
built the same as the originals ?
I notice you have 2 custom boards with BNC output socket, will they be available and if so where can they be obtained ?
Also what sort of value and voltage level are the Wima capacitors c1, c2, and c3. ? any further comment would be useful to us all.
and is there any where local they can be obtained from ?


Regards AG

Free Energy | searching for free energy and discussing free energy

Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #94 on: October 20, 2020, 10:43:33 PM »
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Offline evostars

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #95 on: October 20, 2020, 10:53:12 PM »
C1=C3=1Uf they provide the fast current needed to run it. wima mkp10 or fkp1 or something like that but not elco (to slow)
voltage rating for power supply, 100Vdc

C2 is the series resonant tuning capacitor. it depends on which frequency you use. I have it from 35nF to 61nF
Wima fkp1 2000Vdc series. for L2
caps can be bought at reichelt.de

I actually use 4 coils.
L2 is the primary impulsed series resonant coil

L3 is the secondary coil, loose coupled to L2.
L3 can be untuned, or parallel tuned.

L4 generates output (depending on tuning)
L4 is close coupled to L3. L4 is not resonant
L4 can be rectified into dc cap for resistive load power measurements

L1 and L2 are also close coupled they are a feedback loop.

Im still playing with it. not fine tuned it fully yet, as it also depends on L2 L3 coupling (distance)

today I tested the halfbridge isolated gate driver pcb, without batteries or pulse transformers, and it works!

If the half bridge circuit has been tested, it will be made available

you will also need a symmetrical power supply, I use a 2 channel series connected powersupply for that.

and a dual signal generator, for out of phase square waves 49% duty cycle.

Oh and use the Mur8100e diodes, not the others they burn out,( due to soft recovery problems ) stth1210 are bad

still testing... still learning,
Kind regards
Apprentice Ivo

Offline evostars

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #96 on: October 22, 2020, 08:34:21 PM »
and to protect the mur8100e from over voltage, use a 900V SiC mosfet, so its 900 avalanche mode body diode will protect the 1000V diode

c3m0065090d
mosfet 900V

Free Energy | searching for free energy and discussing free energy

Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #96 on: October 22, 2020, 08:34:21 PM »
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Offline evostars

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new Radiant Half Bridge Circuit
« Reply #97 on: November 20, 2020, 10:33:18 AM »
Video will be watchable from november 21 2020; 0:00 AM GMT

It shows my Radiant half bridge circuit. explained into detail, and working.
Longitudinal resonance and current amplification by impulses.

https://youtu.be/c2_rKc7sHGk

Offline fejleszto

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #98 on: November 23, 2020, 05:52:17 PM »
Hi peolpe!
I'm amazed by this work, so I've decided to build it and make some tests myself. I've designed a driver pcb for my taste, but the schematic is the same as Ivo made in the first turn.
The pcb was designed with diptrace, a very nice software for small hobby projects. Please take and use it! My only wish is if you notice some errors please let me know!
Thanks! :)

Free Energy | searching for free energy and discussing free energy

Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #98 on: November 23, 2020, 05:52:17 PM »
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Offline fejleszto

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #99 on: November 24, 2020, 06:19:27 PM »
I found meanwhile a very useful description of the driver circuit design (see picture), so I revised my work, and corrected some errors too!
These will be manufactured probably...

Offline fejleszto

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #100 on: November 25, 2020, 07:10:29 PM »
Hi peolpe!

I'm amazed by this work of Ivo, so I've decided to build it and make some tests myself. I've designed a driver pcb for my taste, but the schematic is the same as Ivo made in the first turn.
The pcb was designed with Diptrace, a very nice software for small hobby projects (free up to 300 pins).

Please take and use it! My only wish is if you notice some errors please let me know!

Thanks!

@admin: please delete my previous 2 post because of they are obslote!!!

Free Energy | searching for free energy and discussing free energy

Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #100 on: November 25, 2020, 07:10:29 PM »
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Offline evostars

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #101 on: November 26, 2020, 11:07:07 AM »
While tuning and playing with the radiant half-bridge circuit, a triangle wave appears. This is from simultaneous magnetic and dielectric induction, from a dual primary.

the secondary that makes the triangle wave, also shows phase shifting.
this video shows it all:
  https://youtu.be/2fLBZu7BJkM 

Circuit is explained in the previous video:
  https://youtu.be/c2_rKc7sHGk

Offline synchro1

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #102 on: November 29, 2020, 04:23:55 PM »
@Evostars,


Congratulations on great progress! I would like you to estimate the overall coefficient of performance: COP.


How much stronger is the pulse in L-3 than the input pulse?

Offline forest

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #103 on: November 29, 2020, 05:37:59 PM »
I believe you are on right track. Draw schematic  kinda different way and compare to Richard Willis patent ;-)

Offline evostars

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Re: Radiant power from Solid state Tesla hairpin circuit
« Reply #104 on: November 30, 2020, 11:28:06 PM »
cop below one.
thanks forest

 

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