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Good to have for sure! I'm working on a Browne gas generator (HHO), so I can burn water....

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Before you invest too much time or money in that I would implore you to do a simple experiment of taking a power cord and splitting it into the two electrodes and then immersing them both into a tray of salty water with jars above each electrode to capture the gasses that are produced. You will see that the volume of gas you produce even with house current is very small. I did a science fair project on electrolysis and you might be surprised how much energy it takes to produce very small volumes of hydrogen and oxygen. Then for fun take your electrodes and stick one in either end of a standard pickle. If you don't pop a fuse or breaker that sucker will light up like a florescent light.
I remember when I was on here a few years ago people pushing something they were calling a GEET engine that sounds like the same idea, it was total hogwash.
You can hook an electrolysis device to a generator or car engine and produce gas but the volume of gas you produce will never be anywhere near enough to actually power that generator or car engine.

If I was going to build an alternative generator for "free" energy I would build a gasifier unit. That's real technology that has been proven and in use since at least WW2. You can run a car or generator off of wood or other biomass material.

I may do the gasifier. I've been intending to do that to make biochar anyway, for my raised beds.

The HHO has to be done right to do any real gas generation. Most people use plates and drive them with a DC signal, but the amount of brown gas generated is a direct function of surface area. I have some stainless steel scouring pads that I've already bought in that should give me 20 to 30 times the surface area of any plates I've seen this far. Then I intend to drive the electrodes that I've made with a high-frequency AC signal.

I will be able to vary the frequency and watch the generation of gas. When I get the critical frequency dialed in, the efficiency should be considerably higher. I'm expecting a gain of about 10 times based on some experimentation of done with electropolishing versus frequency. Monitoring the load current will allow me to find the best frequency easily.

Since an AC signal will generate both hydrogen and oxygen on each electrode, it will also mitigate the corrosion damage most HHO cells experience. I also intend to use exhaust heat to prepare the water. This will use free energy to make the water molecules separate with less input electrical energy, to raise the efficiency.

I also am experimenting with Magnetic gating like they're using on the internet for Lego perpetual motion machines, to generate power directly. The number of people are trying this oh, but they don't know how to do the control feedback. There've been some pretty spectacular explosions with it from centrifugal force. Got to love dangerous stuff, LOL!

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It seemed like it took a long time using house current to get even a cubic inch of gas.

True, it has to be done carefully to get any significant HHO delivery. Most builders are neophytes, copying someone else's design.

I do consulting engineering work, so I get to rebuild complex industrual systems. I get to do R&D including upgrades on their equipment for faster processing.

All I needed to do is to do the same to the HHO cell. I also decided that I would only use OTS ( off the shelf ) parts, to keep the cost down to a sane level. I have reviewed designs in the $8000.00 range for a single HHO cell, and I can't see where that can be cost effective.

I also wanted to keep the size down to allow easier placement in the engine compartment.

The first cell will be run on my bench, venting the gas outside for safety. That will allow me to peak the drive level and frequency using my test equipment. Heat shouldn't change these operating points, but simply increase the efficiency.

Life is never boring, LOL!

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