feel free to post your constructive comments here

nav

Re: feel free to post your constructive comments here
« Reply #25,  »
And that my friend even though anybody won't recognise it as such is the most important piece of information that has ever been posted on this forum by far.
Re: feel free to post your constructive comments here
« Reply #26,  »
Quote from evostars on May 8th, 2017, 02:58 PM
thanks  for sharing Nav, have you build something with this knowledge?

I need to say this: "what about the 3rd field"

2 transverse fields (EM)
1 Longitudinal field.
Yes
Re: feel free to post your constructive comments here
« Reply #27,  »
Build this simple bifilar system but you're gonna need bigger caps believe me.

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Re: feel free to post your constructive comments here
« Reply #28,  »
The pulse going into the diode is half the self resonant frequency of the bifilar, the diode will double it to the actual frequency needed.

evostars

Re: feel free to post your constructive comments here
« Reply #29,  »
tnx nav,  I will review this (later I'm really tired)
Re: feel free to post your constructive comments here
« Reply #30,  »
Nav, what you showed,  looks alot like I am doing.
your drawing show parallel single wire coils.

I use parallel, bifilar series (more capacitance lower resonant frequency.

the diode,  is my IGBT.

i extract capacitance from the second coil, by using Y diodes(creating 2 dc paths,  to charge capacitors, and keep the voltage flowing)

but you use a single wire, @half frequency, being doubled because the collapse into the capacitor is the other half.

nav

Re: feel free to post your constructive comments here
« Reply #31,  »
Its a bifilar coil, you charge the magnetic field on one of it's windings and have the cap on it's other windings.

evostars

Re: feel free to post your constructive comments here
« Reply #32,  »Last edited
Quote from nav on May 9th, 2017, 01:33 AM
Its a bifilar coil, you charge the magnetic field on one of it's windings and have the cap on it's other windings.
but is it also series connected?

i read two positives one 1 side, and 2 negatives on the other side.

so, 2 separate windings, not series connected?

nav

Re: feel free to post your constructive comments here
« Reply #33,  »
This is what the scope will tell you across the charging wires of the bifilar. The gate becomes inverted and is absorbed by the resistor, the self resonant frequency is induced by the bifilar coil but not the inverted gate.

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Re: feel free to post your constructive comments here
« Reply #34,  »
Quote from evostars on May 9th, 2017, 01:43 AM
but is it also series connected?

i read two positives one 1 side, and 2 negatives on the other side.

so, 2 separate windings, not series connected?
A bifilar, you can use a pancake or normal bifilar.

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Re: feel free to post your constructive comments here
« Reply #35,  »
Do you see what happens?, the resistor is an impedance match for the gate frequency and the bifilar becomes an impedance match for the self resonant frequency. Then the self resonant bifilar collapses in the opposite direction but the bias diode only allows voltage to enter the cap on the capacitor part of the circuit.

evostars

Re: feel free to post your constructive comments here
« Reply #36,  »
Quote from nav on May 9th, 2017, 02:19 AM
Do you see what happens?, the resistor is an impedance match for the gate frequency and the bifilar becomes an impedance match for the self resonant frequency. Then the self resonant bifilar collapses in the opposite direction but the bias diode only allows voltage to enter the cap on the capacitor part of the circuit.
don't see it completely.
magnetic field can collapse through resistor to earth.

gate=?   gate=diode?


namirha


evostars

Re: feel free to post your constructive comments here
« Reply #38,  »Last edited
Quote from evostars on May 6th, 2017, 11:38 PM
yes,  i have made a phi based toroid. its perfect for 8 pointed coils. I'll make some pics.
almost forgot.
PHI toroid with coil. see how it travels in straight lines( red one).
1-1-2-3-5-8-13-21-34-...

5= flat 5 pointed star(phi based pentagram)
8=phi based toroid
13=?

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Zweistein


evostars

Re: feel free to post your constructive comments here
« Reply #40,  »
tnx for the input zweistein (funny name. eins zwei drei fier)

Zweistein

Re: feel free to post your constructive comments here
« Reply #41,  »
evostars, could you check next few things please. when your single wire comes out of the coil, before you connect the rectifier or diodes in your case, does a led light up if you connect only one leg. and if you check with a electrical tester screwdriver without touching the metal cap, does it lit up? thnx
Re: feel free to post your constructive comments here
« Reply #42,  »
and regarding the induction cooker, let`s say the pan is your receiving coil and the induction cooker is your transmitting coil. the pan is solid material, so your receiving coil is tightly wound. but if your transmitting coil is tightly wound, you have a magnetic field on the surface. now what happens when you give the magnetic field a litte more space between the windings :)

Matt Watts

Re: feel free to post your constructive comments here
« Reply #43,  »
So Evo, I'm still confused looking at this schematic:



The coil is connected to the positive rail, how is that pulsing from both sides?

evostars

Re: feel free to post your constructive comments here
« Reply #44,  »
Quote from Matt Watts on May 14th, 2017, 07:19 AM
So Evo, I'm still confused looking at this schematic:



The coil is connected to the positive rail, how is that pulsing from both sides?
its not :)

its from youtube channel skycollection. i just posted it because he has some nice films and he uses this pnp npn pair for his coils
Re: feel free to post your constructive comments here
« Reply #45,  »
Quote from Zweistein on May 14th, 2017, 03:37 AM
and regarding the induction cooker, let`s say the pan is your receiving coil and the induction cooker is your transmitting coil. the pan is solid material, so your receiving coil is tightly wound. but if your transmitting coil is tightly wound, you have a magnetic field on the surface. now what happens when you give the magnetic field a litte more space between the windings :)
loosening the windings, would weaken the dielectric field between the windings, increasing self induction
Re: feel free to post your constructive comments here
« Reply #46,  »
Quote from Zweistein on May 14th, 2017, 12:54 AM
evostars, could you check next few things please. when your single wire comes out of the coil, before you connect the rectifier or diodes in your case, does a led light up if you connect only one leg. and if you check with a electrical tester screwdriver without touching the metal cap, does it lit up? thnx
A neon bulb, that also resides in a electric screw driver, lights up, with only one leg connected. Sometimes it needs a little "antenna" on the open leg. for the standing wave to resonate.
I havent tried it with a led.
but a 2 color led, with 2 legs (color depends on polarity) does light up when a closed loop is resonating. indicating a standing wave

Matt Watts

Re: feel free to post your constructive comments here
« Reply #47,  »
Quote from evostars on May 15th, 2017, 06:01 AM
sometimes i doubt myself. I allow myself to post ideas freely. but then Im scared to be judged or not taken seriously.

but i know im not always right. thats fine
i cant stop people judging me. and its a waist of energy worrying over it.

I would like to be able to trust my intuition.

but im only human
In the end, the only thing that matters is can you make it work?

That judgement is between you and the almighty.  If you're right, you're right.
Re: feel free to post your constructive comments here
« Reply #48,  »
Quote from evostars on May 19th, 2017, 02:57 AM
... but the npn gives a positive amplified pulse, while the pnp gives a negative amplified pulse.
Curious Evo, how closely timed together would these two transistors have to be?

Even a matched pair will gate a couple of nanoseconds apart.


Trying to think outside the box (of electronics), suppose we had two oppositely charge plates spaced widely apart and brought them together separated by a thin dielectric at an extreme speed.  Electrically speaking, what kind of a pulse would this manifest?

evostars

Re: feel free to post your constructive comments here
« Reply #49,  »
the timing is dependend on the same field inside the toroid. the field rises, and then collapses. only due to the opposite winding we can amplify a positive and a negative pulse.

its a idea i want to test. maybe it doesnt work.maybe it does. a really fast pair of npn pnp would be best

for the 2 plates, the charge doesnt change on the plates. the dielectric field is weak at a great distance but strong when at a small distance. still the energy in the field stays the same. as the charge stays the same. so... no pulse?

pulse would mean a discharge of the field