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Author Topic: 100 watts output with 60ma input  (Read 12168 times)

IMIGHTKNOW

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Re: 100 watts output with 60ma input
« Reply #45 on: February 28, 2023, 02:57:33 AM »
Very interesting indeed. I do know electronics do eat up some power so sometimes I use a small motor spinning a commutator. As long as it doesn't have brush lift the cut off of the power is instantaneous.  Just a suggestion only but will follow for sure.
Thanks.

Dog-One

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Re: 100 watts output with 60ma input
« Reply #46 on: February 28, 2023, 04:45:12 AM »
Had another wild hair idea while I was out moving snow...

Suppose we do this:  A coil of wire always has what?

Two ends.

What if we put switches at each side of this coil.  We turn one side
on and almost instantly turn the other side off.  We do this synchronously
with the most tiny delay between the two control signals such that
even at the speed of light, there is no possible way current could flow
all the way through say 1000 feet of coil wire.  Granted, it will happen
much faster because the wire is coiled up and we have a magnetic
field in play, but still, the control signals can be spaced to nanoseconds;
the repetition rate can be at whatever frequency we can do reliably.
We set our control signals such that they take into account the lag
in our switches--rise/fall & propogation delay.  To create the exact
delay between these signals, we could use a piece of transmission
line (coax).  Just cut it to length and it will guarantee a repeatable
delay time.

I really wonder if using this method, it might be possible to reduce
the input power to nearly zero while still getting quite measurable
back EMF out of the coil.

What say you Joel?  Yes? No?  Maybe so?

joellagace

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Re: 100 watts output with 60ma input
« Reply #47 on: February 28, 2023, 04:56:24 AM »
I think Bedini wanted to do something like this, he called it his transistor coil. Wonder if there are any schematics online?

joellagace

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Re: 100 watts output with 60ma input
« Reply #48 on: March 01, 2023, 04:21:15 PM »
For those who where asking for some kind of schematic diagram, I try to explain the best I can and draw a crude diagram on the spot. Perhaps that will help those who were asking for more details, As you can see from the video. Not much to see. Pulsing a coil is nothing new per say. How ever here is how I do it in details and my rational explained.

 https://youtu.be/SZM3DzjiQ8E

Kangsteri

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Re: 100 watts output with 60ma input
« Reply #49 on: March 03, 2023, 05:14:07 AM »
YouTube or this channel removed my suggestions. Is this the circuit schematic: https://i.imgur.io/podAIad_d.webp?maxwidth=640&shape=thumb&fidelity=medium

joellagace

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Re: 100 watts output with 60ma input
« Reply #50 on: March 03, 2023, 12:08:46 PM »
Yeah sometimes youtube detects links as comment spam.

x_name41

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Re: 100 watts output with 60ma input
« Reply #51 on: March 03, 2023, 07:28:24 PM »
it all depends on the Q factor of the coil and its inductance, the lower ohmic resistance and high inductance it has the better it will work or something like a rough equivalent of a superconducting coil, and all this at the cost of increasing the mass and dimensions

SkyWatcher123

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Re: 100 watts output with 60ma input
« Reply #52 on: March 03, 2023, 08:29:55 PM »
Hi all, Hi joellagace, yes, I have changed the oscillator circuit that charges the capacitor for the dump circuit.
It is now the stingo oscillator circuit, which by default, gives the shortest possible on time pulse or very low duty cycle, like 1% on time I've heard.
This means much better efficiency and radiant production from a given coil, need to test some other large coils, as i'm using 100 feet of 18awg. speaker wire in flat pancake style, so that makes it a 200 foot coil length, because each wire of the pair, is in series.
Maybe I'll get another 100 foot roll and make another pancake coil and that will give a total of 400 feet coil length.
The stingo circuit is a little finicky, it needs the right PNP-NPN combo to oscillate correctly.
peace love light :)

Kangsteri

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Re: 100 watts output with 60ma input
« Reply #53 on: March 07, 2023, 12:10:52 AM »
It might be more simple with PNP & NPN transistor pair, like SkyWatcher123 mentioned. I'd like to see the schematics for that too? But i really like this option to test different voltages for the coil. Here is a circuit I might try some point:
https://i.imgur.io/e6sZtkH_d.webp?maxwidth=640&shape=thumb&fidelity=medium

Here is some of my reasoning for it:
So i wanted to avoid the inverter but keep it isolated. To keep the voltage stable with 5.5 – 32v, it's stepped down with LM7805 Buck module. It's way more officiant than 7805 regulator.

Then it's splitting to isolation modules B0505S-1W (5V) for the oscillator and B0515S-2W (15V) for the coil.  It's possible to test different voltages with different modules. B0505S-2W is 5V, B0512S-2W is 12V and B0524S-2W is 24V. You just need to put different capacitor for the output too, to reduce voltage ripple (these values are on the datasheet). These isolation modules are relatively cheap on AliExpress. More voltage is less resistance. But the battery might like it more with 5V and it would consume less power. It's possible to get even more voltage, by adding simple voltage multiplier circuit (diode and capacitor pairs).

The switching for the transistor can be done with 555 signal generator module.

Resistor is used to protect the transistor, but it might not be needed with low voltage.

2N3771 should be able to handle these wats. It's a lot cheaper than the NTE181.

The coil seems to be one of the key ingredient with all self oscillating systems. It needs to have equal or more capacity than the battery. So mass is important. It needs to be air core, cause any metal, even magnesium zinc (Mn-Zn) will slow down the switching too much. Litz wire would be the best, specially silver coated :D But it's expensive. High frequency voltage is collected with surface tension, so more surface is less resistance. Additional trifilar pick up coils in series will collect more energy too. There seems to be something with the resonation of 1:3, 1:6 or 1:9 on additional pick up woundings...

The outputs need to be rectified. Ultra fast UF4007 or MUR460 should perform well.

I suspect that it would be best to use Low pass filter (Pi / EMI / CLC) to charge capacitor. Rather than the voltage spikes straight to the battery. It needs iron core toroid (yellow white, yellow, black, etc.) choke, with bifilar thick wire coils to equalize the voltage spike difference, to slow down the frequency and taking some charge. Ceramic capacitor will remove the biggest spikes. Smoothing capacitor will collect and dampen the energy back to DC. The smoothing capacitor needs to be higher voltage than peak to peak is. Variable output resistor will determine the output voltage. It will work better if the output can be adjusted, cause the battery and possible load will cause resistance too. Values for the output filter are just questimations from the top of my head, based on example circuits. I'm not loony enough to know the math on these, I'm mainly interested on the consept and principles. Any help or other suggestions would be nice.