Schematics Variable current 12v 60A to 0A

[Dazza]

Yes that coffee additive does the job Ante .  I feel I'm over the worst of the flu now.  I had to do some rethinking of my overall design after finding this ( http://www.hasslberger.com/tecno/hydrogen.html) I have heard of this inventor, and try to find information on his invention many times.  I think the design plans are there to be a bit misleading.  All the important bits have been left out.  The first floor that I noticed was the steel tube entering the water chamber, it would have to be made of nonconductive  material for the separation of oxygen and hydrogen to work.  If someone was to construct this design with little knowledge of what is going on, they would find themselves in real trouble.  You have to wonder if this isn't the idea, negative publicity to discourage people from trying.  Yes the residual voltage is a problem, if for any reason power is left to the device with the engine switched off , or even while I am experimenting with it, that could be a bit risky.  Well not that I'm completely abandoning my original design, for that I will probably need the electrodes to switch, two or three times a second.  Although having the ability of varying this would be handy.  The design I am going to experiment with first, is going to be much like (carl Cella) design.  This is going to make the delivery system, of the hydrogen (pure hydrogen with no oxygen) much easier.  And the production and flushing system more difficult.  I could probably just use relays for switching of polarities for this system, although I would still like to construct the H Bridge as I still may need it.  I have attached a short clip of the experiment I done today (I hope it works) .  The MOSFETs got very hot very quickly at around 8A, so it maybe a case of what you mentioned, some designs of  PWM are better than others.  Maybe I should try another design of PWM.

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[Ante]

I am glad that you are recovering from the flu. I am going to read the article (your link) to get an opinion of the idea. About the residual voltage, it should be easy to have a shutdown of the pulses at the same time as the engine stops for any reason. This could be accomplished in many different ways depending on the engine and it

[Dazza]

Yes Ante I think a shutdown sensor will do the job.  No I don't have an oscilloscope, that is a little bit to technical for me at this stage.  The mosfet that I'm using is (MTP3055E).  I don't have any way of measuring the heat so I guess I might add a bigger heat sink, and let it run at fall power.  I guess if I get a lot of smoke, its not working so good .  I decided to construct another PWM, so I could compare the performance with the first one.  Well this didn't goes so well.  This was my first attempt at a circuit using only the schematics.  I found a circuit using the(LM556N) and decided to try to modify it, to use two 555 timers.  Well I have discovered.  I hate PCB software, I hate printers, and it would be handy to have hair on top to pull out.  Maybe you can see where I went wrong .  Sorry it's a bit rough, my computer skills in this area are very poor

[Dazza]

[Ante]

Yes, a bigger heatsink is a good suggestion the mosfets are normally not very easy to smoke but sometimes you succeed  . As I mentioned in your other thread (which I read before this one) I have a circuit in a notebook somewhere, and I will find it (I hope) and let you know. I remember this circuit to be very efficient (no heat) and rigid. I am beginning to get a picture of you, no hair on top is a start  . If using a PWM circuit and run it at full power during longer periods it

[Dazza]

How does the bypass relay work Ante.  Does it bypass the MOSFETs, to allow direct current to the load.  Can this be controlled to stop it going above a set amount of current.  If it could be capped that would probably be OK, although I am not sure where I would need it to cut in, I think it would be more than 25A maybe 30A,40A,50A. I still can't really be sure how much power I am going to need.  Time will tell with my experience.  A bypass relay won't work with my original design, although it could be very helpful in the new design I'm going with at the moment.  That is if I'm understanding what you mean by bypass relay.

Do you think it would be better to use many small MOSFETs like I'm using now 12A, other than a couple of high-powered ones.

[Ante]

The bypass relay will

[Dazza]

Have you had a look at this yet Ante(http://www.hasslberger.com/tecno/hydrogen.html) this has made me vary from my design a little.  Unfortunately there's no way I can add extra electrodes.  Do you think the circuit in your notebook, could be modified to accept multiple MOSFETs. It would be nice to have the possibility of adding more MOSFETs as needed.  I'm testing your memory now , this is probably a question I should be asking you if you can find the circuit. Do you have an example of how the bypass relay works.

[Ante]

I have read through the article and there are vital parts missing to make it complete. I must have less than

[Dazza]

Yes vehicles have gone pretty much the same way here.  I don't really see all that much of a problem, in using a fuel injected engine. new carburettors are easily obtained through high-performance shops, or even wrecking yards.  You would have to modify the electrical system for the fuel injection, to be disabled if you want to use dual fuel.  Although using dual fuel would make things much more complicated, a lot of things to consider to do this. For modifying to carburettor you would simply disabled all the fuel injection system, make an adapter plate to bolt to where the throttle body was, and there isn't a lot more to it than that.  Although you could probably use the throttle body anyway, and the sensoring system in it. Yes there is a lot of gaps in that design, but I will fill them . Our cost of fuel per leader is usually around 85 cents, it has gone to a dollar, and is expected to reach two dollars by Christmas.  Imagine everyone's disbelief when you pull up to a gas station, and run a hose to the tap then fill your car with water and drive off .  I would love to be able to do that.  Ante what part of the world do you live in, and what is the cost of gas, or petrol as we call it here in Australia.   

[Ante]

I live in Sweden, the fuel price here converted to AU$ 1.90 to 2.10 / litre (regular / super) so by Christmas time it will be fair then.  We are not allowed to modify anything that can compromise the emission rules. Every vehicle must annually pass an (AU$ 60) inspection (government controlled) were all safety issues and emissions are checked. If they find any diversion from manufacturers specs you have to come back within 30 days with the problems fixed (and pay again a little less) or if it

[Dazza]

Ante, it sounds as though you could use this device more than me at the moment.  What model vehicle do you drive ante, I can keep this in mind as I developed this system.  There are similar emissions control in other states here in Australia, but not in Queensland yet.  There seems to be Swedes coming out of the woodwork everywhere at the moment , I have a Swedish neighbour who moved in about 12 months ago, and he is big on distilling spirits and making homebrew.  He often comes and asks me to try his latest creation, that often leads to a lengthy visit and a very difficult walk home .  My partner is not very impressed with my new Swedish friend with his endless supply of alcohol .  He is retired now and used to be a technician in the Navy for the radars, and lived a very colourful life after that.  He had been trying to get in contact with some old Swedish friends for quite some time, that he hadn't seen for I think he said 10 years I was a bit legless at the time .  He discovered that they lived here in Bundaberg not too far, within walking distance, it's a small world.  He has also had some of his relatives come over from Sweden recently which I also had the pleasure to meet.

[Ante]

Being a Swede I drive the only Swedish car left since Volvo became Ford, and even this (Saab) is now 50% not Swedish (GM). It runs fairly cheap 100km/8L but water is cheaper. Is it legal to make your own booze in Queensland? I live close to Germany and Denmark so I don

[Dazza]

Beer has been legal to brew for as long as I can remember. Distilling spirits is only illegal if you get caught .  You can buy a still from your local homebrew shop legally, but the pot must be less than five leaders and you don't refer to it as a still for spirits, it's for extracting essential oils.  I haven't heard of anyone getting in trouble for having a still, although if you got carried away and build something to big that could be a different story.  A Saab is one of the few vehicles I haven't worked on.  It's hard to know what vehicle belongs to what company these days.  100 km/8L is pretty good. I don't think it will be very long, that even the vehicles with the best mileage, will be too expensive to run and I think you'll start finding a lot of, backyard do-it-yourself water conversions.