Author Topic: Hydrolysis and Ultrashort Pulsing  (Read 2164 times)

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Hydrolysis and Ultrashort Pulsing
« on: February 23, 2013, 09:55:59 am »
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« Last Edit: June 27, 2015, 15:06:19 pm by jim miller »

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    • water structure and science
Re: Hydrolysis and Ultrashort Pulsing
« Reply #1 on: February 23, 2013, 10:42:08 am »
Thats a nice document, Jim.
That circuit is easy to build for anybody thats feels the challenge  8)

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Re: Hydrolysis and Ultrashort Pulsing
« Reply #3 on: February 24, 2013, 00:50:43 am »
working on a circuit myself...unrelated to Meyers stuff but may help us all in a way...will post wheither it works or not and explain what im trying to do when its finished and a test is done.

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Re: Hydrolysis and Ultrashort Pulsing
« Reply #4 on: February 24, 2013, 19:12:54 pm »
Thanks for posting the complete article, your'e right on top of things :) :)

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Re: Hydrolysis and Ultrashort Pulsing
« Reply #5 on: February 25, 2013, 02:44:55 am »
Its a long time since i read this for the first time... your welcome...

Notice that this thyristor is there to hold the discharge pulse to avoid burning the fet...
when negative charge is applied to its gate (from secondary diode) in relation to the anode it blocks the collapsing voltage from the primary side...

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Re: Hydrolysis and Ultrashort Pulsing
« Reply #6 on: February 26, 2013, 15:34:16 pm »
I think i got another idea to get rid of the high voltage pulse on the primary while still providing Hv pulses by using one of the chokes connected between drain and cell and the other choke connected from circuit ground to cell those are in the same core so as the primary that is connected from positive to the drain... just for sake of clarity than the source of the mosfet is also connected to circuit ground.

chokes must be greater in length than primary.. .

The idea came from laws of circuitry... i mean if the potential at a point is a and you sum another circular chain in your circuit the potentials must balance somehow..

from simulation with a single choke i got that 1:3 - 1:10 seems reasonable around 100u -1mh primary up to 10A

THis way the voltage goes to the cell... at the collapse of the field and the switch is happy since for say you apply 12 volts and during switch off the primary goes to 240v + 12  at drain node. but the chokes goes up to 2400 each.. for say.. from the point of view of the chokes circuit the drain node is 0v since from ground you get a choke dropping the potential of the negative side of the cell by 2400v and the other choke is elevating the potential by 2400v relative from drain...since the diode is conducting from this point of view the potential at this point should be not zero but 1v or so... anyway

but if you take the choke circuit and source and primary circuit you find the priority discharge path, since as drain is elevated from ground anyhow, the diode between drain and source or which connects also both chokes, is reversed biased so it can't conduct until the potential of the choke circuit at the drain node goes under zero. this makes the primary energy and chokes energy (i'm not using secondary here) all collapsing inline adding to each other and summing to the source too. but as the potential of the chokes are greater the switch wont suffer from too high voltage since the combination of the potentials prevent this node from jumping that way...

adding a capacitor to the secondary circuit may allow high current to flow for increase somewhat the power delivered by the source...  during the charge this capacitor get the drain node voltage at maximum but its discharged in series with the chokes

I think is what danfor did .. . or somewhat close to.. maybe is what meyer did too, i don-t knwo


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« Last Edit: February 26, 2013, 16:48:56 pm by sebosfato »

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Re: Hydrolysis and Ultrashort Pulsing
« Reply #7 on: February 26, 2013, 15:53:14 pm »
from simulation with a single choke i got that 1:3 - 1:10 seems reasonable around 100u -1mh primary up to 10A

My simulations agree with this concept.  On my simulations I have the primary impedance at 750uH.   Anything higher seems to prevent maximum charge at the cell.  However, going too low is counterproductive also.

adding a capacitor to the secondary circuit may allow high current to flow for increase somewhat the power delivered by the source...  during the charge this capacitor get the drain node voltage at maximum but its discharged in series with the chokes

This also agrees with my simulations.

See attached image.

TS
« Last Edit: February 26, 2013, 16:10:10 pm by timeshell »