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Author Topic: very high and powerful voltazh voltage from a small voltage  (Read 50284 times)

DeepCut

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #30 on: February 29, 2012, 12:37:49 PM »
Would be much better to have a solid toroid with no break.

To make winding faster and easier make a simple jig, wind all of the wire to be used onto something thin, like a pencil, then you can hand wind the toroid by just passing the pencil through over and over.

Melting steel with ten watts, crazy !

Perhaps there's something similar to inductive heating going on here ?


gyulasun

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #31 on: February 29, 2012, 12:46:49 PM »
Hi Laurent,

I hope your Nokia charger remained operational from the normal mains voltage?
I guess you meant  the 6.07V at the output of the charger when you connected its AC input to your coil's AC output?  And I would not recommend hooking a 10 000uF cap to the output of the Nokia charger because it is a huge load for it and may change the inside working of the built-in switch mode circuit. 
What would be interesting to know is how low the AC voltage goes down at your AC coil output the moment you connect the Nokia charger to it, first without any load across the charger DC output.  I think the dizzling noise was heard under the time the 10 000uF cap was being charged up to 6V, agree with this?

So when you measured the 6.07V at the charger output, what was the AC input of the Sergdo circuit to the charger, can you check it with your scope? You wrote elsewhere you rewound the output coils with less than 500 turns, what is the output peak to peak voltage now?

And it would be also good you load the DC output of the charger by a normal resistor when it is hooked to your Sergdo circuit, the resistor value would be in the range from 33 to 82 to 120 Ohm and see if the 6V DC output is changing or remains stable as you increase the load towards the lower values.  Maybe you can check its behaviour when plugged into the normal mains and you load the 6V DC output?

Thanks,  Gyula

Hi Gyula

i tried to hook a NOKIA  handphone charger without standard transformer but i could get about nothing. The voltmeter indicated 6.07 volt, than i conected a 10 000 uf 100 volt cap and the charging was a bad dizzling noise and i had to constantly regulate the voltage input to increase the voltage in the cap, Than when the cap was at 6.07 volts the dizzling noise stop and the scope shows a normal fonction ( as per no cap charging)

than i conected a lamp (rated 4 volt DC ) accross the cap and i got a short and brillant ligthing.

So i think that this phone charger (nokia ) is not able to do what i am looking for  8) 8) 8) or any idea ?

but just for fun

http://youtu.be/FqGjkqaTC7Y

good uck at all

Laurent

Hitman

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #32 on: March 01, 2012, 12:32:14 AM »
Hi Hitman

bravo

i wondered if a TV yoke would work and you say it is possible.

Yes i think also that a one piece torroid should be better, but what a hell to wind :-X

If you look at Sergdo video , his toroid do not dizzle at all, the diizzle appears only at the welding arc.

My broken torroid dizzle a lot, and i also noticed that when i press the 2 parts the dizzling decrease but not desappears.

Can you say more on the dimension of your yoke and turns of primary and secondary, because i think at this stage of developpement we have to test a lot of different ferrite toroid and winding, to improve our knowledge.
By the way i wonder if a NANOPERM toroid would be better ???

Many thank's :)

Laurent

The yoke is about 2 in high by 3.5 in diameter, looks like the one Arunas used, it came out of a very old TV.
primary was 30 turns each of 26awg magnet wire and sec was 131 turns each of 23awg magnet wire.
transistor was a 2N3055

I wound another smaller and newer yoke today using the same guages of wire but increased secondary to 200 turns each, I still was able to light my 120V  2watt bulb but it was not strong enough to melt steel. Also I noticed I couldn't reach the lower frequency's like I did with the first yoke.

will try to find my camera and make a quick vid :)

Cheers Michel

Hitman

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #33 on: March 01, 2012, 06:50:26 AM »
Update !
I am now lighting two 120volt 2Watt led bulbs connected in series at just under 2 watts.

I used a solar cell to measure how much voltage the led bulb would produce on the cell when connected to the mains power (.41volts), I then adjusted frequency of the (I don't know what to call it) thingamabob to match the .41 measurement and then took voltage and amp readings with 1 bulb then 2 in series.

1 bulb connected to mains: 114volts @ .016amps = 1.82watts, bulb intensity = .41volts
1 bulb connected to toroid: 12.65volts @ .187amps = 2.36watts bulb intensity = .41volts
2 series bulbs connected to toroid: 12.52volts @ .162amps = 2.02watts bulb intensity = (much higher)

Now I'm not sure but wouldn't the 2 lights in series suppose to give you a total of 4 watts ?

Here are some pics and a video as requested.

http://youtu.be/MNFgWYUzYOg

Cheers Michel (aka Hitman :)

gyulasun

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #34 on: March 01, 2012, 02:55:19 PM »
@Woopy
I used an old TV yoke cut in half for my toroid and noticed my led lamp gets brighter when I apply more pressure on my 2 halves, maybe if its in one piece we will get better results or more efficient results...
...

Hi Michel,

Thanks for showing your replication, very good.  You surely know that applying more pressure on the two halfs of the toroid decreases the airgap between the facing ferrit surfaces, hence the  inductance of all the coils surely increases and more energy can circulate inside the core versus the higher airgap case.  Yes a fully closed big core would be better but there are two reasons:
very hard to wind the some hundred turns and there is some danger for the core to get close to saturation.


I used a solar cell to measure how much voltage the led bulb would produce on the cell when connected to the mains power (.41volts), I then adjusted frequency of the (I don't know what to call it) thingamabob to match the .41 measurement and then took voltage and amp readings with 1 bulb then 2 in series. 

Hopefully you used a shading material (black cloth or whatever) to close out ambient light when you took the calibration and the solar cell received light from the LED lamp only?  And this shading material was used in the same way when your LED was run from the Sergdo circuit?   Even so, this comparison (may it sound good) includes the lack of the light spectra difference (if any) between the some kHz and the 60Hz mains frequency drive.  IT would be good to know the LED inner circuit, if it includes full wave diode bridge at its mains input and a puffer capacitor then the difference may be less.
However I would like to learn how you adjusted the frequency of the 'thingamabob'  :) to arrive at the  .41V?

Quote
1 bulb connected to mains: 114volts @ .016amps = 1.82watts, bulb intensity = .41volts
1 bulb connected to toroid: 12.65volts @ .187amps = 2.36watts bulb intensity = .41volts
2 series bulbs connected to toroid: 12.52volts @ .162amps = 2.02watts bulb intensity = (much higher)

Now I'm not sure but wouldn't the 2 lights in series suppose to give you a total of 4 watts ?
...

Theoretically I would agree, the two LEDs in series would consume 2 x 2W but you surely noticed that the circuit consumed less input power when the load was 2 LEDs in series, meaning the LEDs are nonlinear devices and very sensitive voltagewise.  Here again it would be good to know the inner circuit of such LEDs do they include any voltage stabilizing circuits.  Perhaps first a voltage-current curve or tabelle could be made from the mains voltage by a Variac transformator to explore their behavior.
IT may be also useful to connect the two LEDs in parallel, not in series to see the same  .41V or around that from both and then observe the circuit input power.

Thanks,  Gyula

Hitman

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #35 on: March 01, 2012, 07:41:12 PM »

Hopefully you used a shading material (black cloth or whatever) to close out ambient light when you took the calibration and the solar cell received light from the LED lamp only?  And this shading material was used in the same way when your LED was run from the Sergdo circuit?   Even so, this comparison (may it sound good) includes the lack of the light spectra difference (if any) between the some kHz and the 60Hz mains frequency drive.  IT would be good to know the LED inner circuit, if it includes full wave diode bridge at its mains input and a puffer capacitor then the difference may be less.
However I would like to learn how you adjusted the frequency of the 'thingamabob'  :) to arrive at the  .41V?

If you look at my 1st pic, you can see the solar cell glued to a round piece of cardboard which was taped to the steel housing of the lamp so there was no ambient light getting in and same was done for both mains pwr and serdgo circuit.

When you adjust the variable resistor the intensity of the bulb varies and this is how I able to adjust the bulb intensity (.41volts on the cell) to equal the mains power. This was not done on the 2 bulbs in series but I could clearly see the intensity of the lights were much higher then on mains.

Quote
Theoretically I would agree, the two LEDs in series would consume 2 x 2W but you surely noticed that the circuit consumed less input power when the load was 2 LEDs in series, meaning the LEDs are nonlinear devices and very sensitive voltagewise.  Here again it would be good to know the inner circuit of such LEDs do they include any voltage stabilizing circuits.  Perhaps first a voltage-current curve or tabelle could be made from the mains voltage by a Variac transformator to explore their behavior.
IT may be also useful to connect the two LEDs in parallel, not in series to see the same  .41V or around that from both and then observe the circuit input power.

Thanks,  Gyula

Sorry I don't have a variac to try what you suggest but maybe someone who does could test it out, also I will try connecting them in parallel then I will dismantle 1 of my bulbs and take a look at the circuitry, I just hate breaking apart a 10$ light bulb :(

Thanks for the suggestions

Cheers Michel

woopy

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #36 on: March 01, 2012, 10:26:52 PM »
Hi Hitman

go on man good work

i also tried to wind a TV yoke and i get good results at low voltage but much less at higher power. (could get very low melting, nothing in comparison with the torroid ferrite core ) ???
I will try to wind the Joulethief part on one halfe of the yoke and the 2 secondaries on the other half of the yoke to see if there is a difference.

Hi Gyula

thank's  for all very interesting input as usual

I include a pix and ask you your idea on the fact that if use 2 same electrodes on the output of the secondaries, and make some distance between them , in order to install a plasma arc (about 1 cm )    why is the left  end of the plasma arc seemly "cold " and why is the right end seamly "hot"  and melting  the steel.  Is it possipble that the 2 secondaries are dealing with different nature of energy?? :o

thank's

Laurent


gyulasun

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #37 on: March 01, 2012, 10:51:17 PM »
Hi Laurent,

I assume you use the two HV diodes at the output of the secondaries?

EDIT:  If you use the HV diodes, the "hot" or the "cold" wire end is connected to the common points of the diodes?

Gyula

woopy

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #38 on: March 01, 2012, 11:39:34 PM »
Hi Gyula


No.. sorry

 It is  a direct conection   from the 2 secondaries output leads  to both  electrodes .  (as per  the  Sergdo windings ) with no diode at all.

 And if i invert the 2 wires of the secondary leads , i get the  "hot" point end on the left and the "cold " point end on the right

fascinating to me at this point!!

thank's

Laurent


gyulasun

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #39 on: March 02, 2012, 12:25:20 AM »
Hi Laurent,
 
 Before I forget:  you may wish to WEAR PROTECTIVE GLASSES to watch the arc, maybe an UV protected sunglasses as a minimum precaution to your eyesight,  think about this!
 
 IS it possible that the moment you touch the two wires, a hot spot developes on one of the wire-ends and then as you pull them gently apart, the hot spot stays on its place (but do not ask me now why it would stay,  :o   )
 
 Although this paper deals with DC arc, maybe a good reading on this topic:
 http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1963AuJPh..16..228E&defaultprint=YES&filetype=.pdf 
 
 Have you known that in general an electric arc has a negative resistance characteristic in its voltage/current curve? IT means that when current increases in the arc, the voltage reduces between the electrodes or vice versa, within certain voltage values, this is shown in the above paper but here is an interesting circuit from a book, go to this link http://books.google.com/  and enter this title: [ The science of radio: with MATLAB and Electronics Workbench demonstrations ]   and click on the book address (the first one in the appearing list, then in the book roll down to page 80 and 81.  Very interesting, a series LC is shown across the electrodes, it remembers me to replace the L in it with a transformer primary coil...  So the energy coming from your secondaries maintains the arc, the arc has a negative part in its voltage - current curve and it means it could keep an LC circuit in oscillation...  we have to think about this.
 
EDIT:  Try to use the HV diodes for testing how the hot or cold ends may change and for the book example where a DC arc is involved, not AC arc.


 rgds, Gyula
 
 PS: Please when you have some time tomorrow, try answering my questions in my Reply#31 above, I am curious  :)
 

gyulasun

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #40 on: March 02, 2012, 12:31:35 AM »
double post
« Last Edit: March 02, 2012, 11:39:44 AM by gyulasun »

gyulasun

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #41 on: March 02, 2012, 11:40:02 AM »
 Hi Laurent,

I noticed Caroll's post on the other forum and indeed as she wrote, with DC arc the electrons 'travel' towards the positive wire end, causing more and more 'hot particles' there while they leave the negative wire end, quasy 'cooling' it by moving away from it.

Last night I though of this and this is why I asked about the diodes and you wrote you did not use any so you must have had AC pulse, with alternating polarity, so this could not explain the temperature difference. 

This morning it occured to me however that you had an asymmetry in the output AC pulse when you showed the 350V waveform across the LED lamps with the 500 turns secondary coils, (200V peak positive above the zero crossing and 150V negative peak below zero crossing) so there was a quasy 50V DC shift, a DC polarity 'advantage' at one of the electrodes.  OF course I do not know if your new output coils with the 200 turn (or whatever) windings have a similar amplitude asymmetry around the zero crossing but if you simply made the two output coils onto the different half cores again, chances are there is now again asymmetry between the positive and negative amplitudes. 

rgds,  Gyula 

PS You mentioned you use steel wire where one of the ends is hotter in temperature,  I wonder if your steel wire is ferromagnetic? i.e. a permanent magnet attracts it? 

Hitman

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #42 on: March 02, 2012, 08:36:40 PM »
More testing,

lamps = 120V @ 2Watts each.

1 lamp on mains     101.5VAC @ 16ma input = 1.62Watts
2 lamps in series    6.65VDC @ 199ma input = 1.32Watts
2 lamps in parallel  7.25VDC @ 158ma input = 1.08Watts

Here's a scope shot with no load

Cheers Michel
« Last Edit: March 02, 2012, 09:39:25 PM by Hitman »

gyulasun

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #43 on: March 06, 2012, 02:45:55 PM »
Hi Michel,

I am curious...  :)

Where is the zero line on your scope shot above?  And does the amplitude of the pos and neg part of the output pulse changes when you connect the LED lamps?   
IF you dismantled already your setup, then it is ok of course.

Thanks,  Gyula

woopy

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Re: very high and powerful voltazh voltage from a small voltage
« Reply #44 on: March 07, 2012, 12:09:03 AM »
Hi all

Hi Michel and Gyula

and of course SERGDO if you wish to try to come in the discussion it would be great even in russian thank's !

just my next experiment, really interesting

http://youtu.be/LA3wDUjYhqE

and some scope shot of the importance of the diode's organisation for a good melting process

I hope you can see it correctly, or do not hesitate to ask for better pix

to resume , on the left part , the 2 serial diodes are working and on the right part , i supressed the "shorting diode ". so only 1 diode bank is working.

so it seems that i get a really better result with the 2 opposing diode banks.

So i wonder if we are not dealing with a shorting coil experiment here ???  Gyula what do you think   ;)

Good luck at all

Laurent