Author Topic: 144 VOLTS DC as in video  (Read 4357 times)

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oddball

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144 VOLTS DC as in video
« on: January 23, 2008, 11:54:47 am »
Hi
First thanks for making this forum.
I would like to ask how you have created the 144 volt DC in this video if this video has anything to do with you.
http://www.youtube.com/profile?user=pochintwin

I would have thought you are really talking about a PWM DC that is measured with a volt meter as 144 VDC am I right.
If so I have a 3" diameter ferrite toroid transformer I am thinking about unwinding then re-winding with 200 turns primary and 2400 secondary to give a 1- 12 ratio. So 12v PWM will jump to 144 V pulsed.
I was thinking about winding it bifilar 1 turn primary and 12 turns secondary.
Or do you just think wind 200 on the toroid then wind the other 2400 over the top?

This will take quite some time so if I am wasting my time please let me know before I start!

I have a cell made with 15 plates 8" x 4" with spacing of 1.5mm between plates and have a bifilar wound 1.5" toroid with about 140 turns x2.
I have conditioned the plates with my Lawton PWM osc and gas OP has increased max current is about 6 amps drawn from the battery when I used the PWM and chokes. If I connect the cell direct to the battery it pulls 40 amps.
I have chosen the cell set up I have because when I looked at the Mayer video where he is testing it on his drive way the cell pipes look less than 24" long so my cell should have greater capacitance than his.

Here is my set up

Thanks.

hydro

  • Guest
Re: 144 VOLTS DC as in video
« Reply #1 on: January 23, 2008, 12:19:46 pm »
Thats pochintwin's video, i cant tell you for sure how he did it. i know he used the pwm and the power he had running threw the pwm was from another external power source, probably a variac rectified at its output. you can also look at our alternator schematic here to see how it is possible to use external power by just telling the mosfet what to do with the pwm.

pochintwin is a member he and can be found by looking threw the members list found on the bottom of the forum index. clicking on his name will let you im him.

oddball

  • Guest
Re: 144 VOLTS DC as in video
« Reply #2 on: January 23, 2008, 14:05:26 pm »
Thanks I may PM him later after I have had a look around your forum.

I did give some thought to using a UK 12v to 240VAC inverter and feeding the OP through a FET/ power transistor and into a Bifilar choke then the blocking diode.

(http://propaholics.wolfchasers.com/uploader/users/oddball/CELL%20DRIVER%20240INV.jpg)

As you may know I am using the Lawton PWM which pulses the negative. However the blocking diode should be in the positive to recreate Mayer. While I was making the video I realised the blocking diode was doing nothing of any consiquence in the + before the choke.

My thought is that the design may work better if the + was pulsed and the diode was after the choke this would mean a change of FET and CCT from the N channel FET many of us are using.

However if I used the Mayer step up transformer that should sort it all out in terms of high voltage and the diode.
I noticed in the Mayer patent he has the diode between the transformer and the choke but it would seem more sense to have the diode after the choke as I say above.

If I get this to work with PWM I will post a clear video of how to do the lot.

Thanks.
« Last Edit: January 23, 2008, 15:49:02 pm by oddball »

oddball

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Re: 144 VOLTS DC as in video
« Reply #3 on: January 24, 2008, 10:57:36 am »
However after looking around you forum some of you seem to have the impression that there is no point in stepping up the voltage from 12 V in your car, as you think low voltage and high amps is better so should I just use a step down transformer?
Or do you believe the choke is doing this job? I saw in a posting that you say the amps and volts are always lower on the cell side of the choke, so if the amps are lower and you believe amps need to be high there can not be too much point in having many windings on the choke can there?
You state that the choke acts like a spring that pumps up the amps using the blocking diode after the choke is that right?
I know that the choke gives an extra pulse when the field collapses but am not sure if this is a higher current than that originally applied to the choke. ???

hydro

  • Guest
Re: 144 VOLTS DC as in video
« Reply #4 on: January 24, 2008, 11:37:30 am »
yeah, more current comes out of the chokes then the current used to power the chokes, the volts out of the chokes are higher than the volts driving the chokes. you end up getting more out of the chokes than you put into it.