Electronics > Beginners
Heavy duty AC to DC converter required
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dmills:
Were I making browns gas for some reason I would be looking to build say 6 * 50V stacks rather then a single 300V one, then use telecom rectifiers as the power supplies.

Compact, efficient, isolated and (on the surplus market) all kinds of cheap. The Eltek Twinpacks seem to be widely available and relatively well documented (2,500W each).

Regards, Dan.
mche1997:
Hi Dan, thanks for the advise, sorry again it's far too big and heavy, ok for static but its to go inside an enclosure the size of a 2 drawer filing cabinet and always gets transported around.
6  smaller stacks might work with lower voltage but not sure if it can produce the same amount of gas and temperature wise when running for over 1/2 hour.
TopLoser:
Tell us how much equivalent commercially available systems sell for?
mche1997:
From £1500 up to £8000
dmills:
There will be a reason for that cost...

As to the size of the telecoms rectifiers, I have several 2kW units (Eltek Flatpack 2HE) that are about 1.7 inches high, 4 inches wide and maybe 12 inches long, three of those would get you ~6kW (120A @ 54V) which should get it done, I seem to recall paying £25 each for them.

My use is radio shenanigans, not inefficient gas generation, but whatever.

I take it you have considered the effect of hot H2 on most steels? Hydrogen Embrittlement is a thing you know. 

Regards, Dan.
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