Simple Voltage Boost

[d3x0r]

Falstad sim...

So I thought I had something unique.... but eventually managed to find similar enough parts to make it work and figure out the actual basis for it.
Simple 5V pulse input generates 18V...
am not sure how to tune it to get it more optimal...
or +/-2.5V pulse gets 18V in the experimental apparratus.

I was playing with zero inductors... like the ferrite thing on the ruslan/akula kacher... I have some other coils that can be reconfigured to be zero-induction coils... and turns out I can string as many of those as I like and there's no benefit.  *scratch that*  if i have none, the output is weak. 

I also had a ferrite toroid, wrapped with a bifilar coil, with a coil around the outside of the ferrite ring.  I shorted the end of the bifilar together, and thought it was giving a resonant signal to the outside winding... until I swapped another coil to put near the ferrite, and found if I removed that coil entirely the thing still worked... so there was 0 inductance on the front side of the cap... so it was just a capacitor to an inductor to ground.... and in simulations, it works.

60Hz square wave (sine wave works too , but not as well... since the current result is more triangular ... it would have to be a lot more inductance for sine wave to help it...  but even then, it's about the differential from the change that causes the kick...

.... tinkered with the sim some more, and 8Hz, 125mH, 3.5mF 5V gets 50V almost.... but the bigger the capacitor, the more current ... so it's current into voltage transformation


My bench I'm around 1.7Mhz, with a few plates of capacitance, or meter of wire coiled next to each other... and a few turns... of coil (like 8 or 9 around a the outside of a ferrite core; which doesn't help it much...


series resonance... resonant frequency calculator applies in this situation anyway...
I had tried to take the load back to ground; but it was working better across the capacitor... in the simulator I get one tiny spike of voltage/current to ground, it's smoothed going to the signal...


with a capacitance too big or a inductance to ground too big my little signal generator cannot maintain enough current to make it work... but a small current can be utilized at Mhz frequencies...

[MarkE]

There are basically three ways to boost a voltage source:

Capacitor / rectifier ladder style voltage multiplier.  Works best when the input voltage is much larger than the forward voltage drop of two diodes and the load current is light.

Forward transformer:  N:M turns output to input turns ratio multiplies the input voltage by N/M.

Flyback coil / transformer:  Current through a coil is interrupted and a high flyback voltage develops across the opening switch.  In a transformer configuration the flyback voltage is multiplied by the N/M output to input turns ratio.

The methods can be used alone or in combination, and clever circuits like Tesla coils capitalize on resonant tanks to store up large amounts of energy.

Integrated circuit capacitor voltage multipliers have been available for about 40 years that convert +5V into +/-10V, such as the ICL7660.  The down side of capacitor voltage multipliers is the high surge current on each switching edge.  Some series impedance from either a resistor that throws away power, or an inductor is often needed to keep the currents from getting out of control.

[TinselKoala]

I would include VRSWR (voltage rise through standing wave resonance, on a helical resonator) as perhaps a fourth class of voltage boost, somewhat distinct from ordinary resonance in a tank circuit.  The following paper by the Corum brothers is very informative.

Warning: math ahead, but you can skip over the deep stuff and just get to the conclusions:
http://hamwaves.com/antennas/inductance/corum.pdf

[ayeaye]

This supposed to be about overunity, so i don't understand why no one measures the input and output energy. I have seen youtube videos where they show voltage increasing, and they say it's overunity. Voltage increase is not overunity, at least not voltage increase itself. Such experiments may be useful for some other reason, but they are useless for overunity.

[TinselKoala]

This supposed to be about overunity, so i don't understand why no one measures the input and output energy. I have seen youtube videos where they show voltage increasing, and they say it's overunity. Voltage increase is not overunity, at least not voltage increase itself. Such experiments may be useful for some other reason, but they are useless for overunity.

Exactly right. Voltage is not energy, current is not energy, power is not energy. Voltage amplification always occurs at the expense of current and/or power, and you can rearrange the terms voltage, current and power in that statement all you like and you will still not get more _energy_ out than you put in.

People often claim large overunity "COP" numbers by conflating _peak_ power levels with average power, or using voltage or current alone as their data. I have often offered my various devices for testing by the same methods some of these people use. By their methods, I have at least ten massively OU devices sitting on shelves and my workbench right now. Unfortunately for me, a "COP" of three thousand to one, like my TinselKoil IV can attain _using those methods_, still isn't enough to self-loop.

But as I have repeatedly stated, if you show me a device with electrical inputs and outputs that makes a _true_ "COP" of at least 1.3 to 1, I can show you how to self-loop it and run it without any external source of energy once it is started up. Guaranteed. But nobody will  take me up on this offer by sending me one of their claimed "COP > 7" or "COP 20,000" devices like we have recently seen touted on this forum. Why not? I know why, and so do you: their claims are false. And the claimants, most of them, know it too.