Tube Cell with 8Xa Card for experimenting

[f3dfox]

Tube Cell with 8Xa Card for experimenting

[f3dfox]

This is my choke setup. I talked with my circuit board specialist, he recommended a steel powder core (Toroidal) as this would handle a bigger window under load.
This is what I got.
Core Part No. T157-70
Wire Gage # 18 AWG
Number of Turns 82 (with 2 wires)
Copper Loss 0.2W
Wire Length approx. 26 ft.
Core OD 1.57 in.
Core ID 0.95 in.
Core Height 0.57 in.

= Inductance 780 uH

Hope this helps anybody further.
I just wound it by hand since setting up the winding machine is too much time.

[f3dfox]

Here are some pics of the tube setup while assembling it. It is not done, the electronic side is still under construction:-)
I guess I shouldn't have use solid copper wire, when applying plain ac power to distilled water and "heating up the water", they get too soon hot and blow my fuses... You learn as you experiment...
I'm still thinking whether to exchange them for regular stranded copper wire with 600V rating or to do it right away with High Voltage wire, which can't handle big currents.
On the center I use an o-ring to seal off, on the outside I used teflon coated threaded rod and the red sealant washers, and on top of the screws I use special washers with a rubber lip.
The tubes are 316L stainless steel, the centering of the tubes is done by the 4 plastic screws per tube set, thread on the inner tube and through hole on the outer. It holds fairly good. With this setup I don't need the plastic spacers of the tubes on the top side, the stainless steel plate on the bottom connected with M10 thread to the inner tube keeps the spacing very strong in position.
After welding the nuts into the inner tubes, I re-faced them on the lathe to get a perpendicular face, but I took off as little as possible, that is what you see on the 3rd picture.
Passivization of the weld spots will be done at the end, I have to find out first if it affects the hydrogen generation.
More pictures and results following, at completion I will post also all my 2D and 3D drawings and models.

[f3dfox]

Here, this cables should do the job for now, it's 16A for 600V 2,5mm^2, but multi-strand.

[h2oadmin]

Excellent project and pics - you are well on your way to building a Meyer Cell replication.
When choosing wire, remember that all of Stan's designs are built around the concept of
high voltage and low current, not vice-versa. This means you may need some extra insulation on
wire but not necessarily a bigger wire (conductor). Nice wind on the toroid as well - we wound several which do help to create EMF voltages...

[h2oadmin]

Also, note that conditioning the cell can produce more gas output, but the major cause of efficient gas output is operation inside resonance. All of Stan's designs work on this - once resonance is determined and maintained, the designs will come to life. Meyer's later designs not only determines resonance based on the fluid type, level and cell, but also adjusted itself to maintain that resonance condition...

[f3dfox]

Thank you very much, found your reply only now since the mail landed in spam
The high voltage and low current is clear, but thanks for the tip
regards the welding of the tubes, the outer strap I have VIC welded with stainless add material,
the inside I came to the conclusion that Stan had connected by welding a special turned nut inside the inner tube and screwed it onto the plate. That's what I have done too. That works very well and you have very strong alignment and easy assembly.
Regarding the cable, I probably won't be able to use this test cell as a high voltage cell since the voltage would leak... That's why I selected thicker cable and not HV cable, I want to try all kinds of electrolysis and voltalysis ways out (without chemical adds.) For this my first cables got hot always (at 1,5A already).
I have been starting on conditioning the tubes at 6V and 1.2A for some time. I only found out about conditioning later.
It looks like we can see some "whitish" coating in Stans's tubes, is this the conditioning layer of coating?

Was Stan using HV on this long tube setup??? No Delrin encasement...?

[f3dfox]

Questions about the 8Xa card

First of all, I think my choke doesn't work the way it is supposed to, but that is another issue. I will have to re-do it probably...
1st - What is the "normal temperatur the 8Xa board is working? My SCR and also the big diode heat up to about 115°F (45°C) when applying 15V and drawing 5A.
I used 18 Gage wire on my choke, so it heats up at the same setup to 175°F -really hot. What is normal?
2nd - It seems to me that the frequency adjustment doesn't make any difference in the gas output, I didn't get around checking it out though. These are just my observations.
What I like is that the 2 circuits are separated completely from each other by the Optoisolator.

[f3dfox]

Update on the choke
I finally got the Inductance meter and measured my choke (at 200 Hz), I measure 940 µH. So I am above the 760 µH stated. But it doesn't seem to make a difference in blocking the Amp flow if I connect 1 Tube or 6 Tubes. I measure about 0.25A less on 1 cable then on the other, that means somewhere I have a small leakage... But for now I neglect this.
Is the choke not working because of the toroidal winding or why? Does it need to be an EC core?

Thanks for any help or suggestions!

[h2oadmin]

Yes, all our tests were done with EC cores as Stan's original design had. The permeability of the core on the choke makes a tremendous difference. Yes, the choke should not be hot, the current flowing through the coil is too large - you may need to use a lower voltage on the variac or dilute the water in the cell with distilled water to lower the current and load. Also, the frequency adjustment is not intended t control the output frequency - you will notice it does not affect the output frequency at all - the output frequency remains at a fraction of the input source frequency. The adjustment simply changes the time that the voltage is applied to the coil and cell. The board is simply a demo unit for the patent office built by Stan - it's still capable of adjustments and improvements...