Can I use rectified mains power for electrolysis?

Assuming that I properly insulated the system, would it be practical to use mains power in a hydrogen generator? It seems to me that it should be feasible, but I've heard from some people that hydrogen generators work better at lower voltages. If I could use mains power, would I have to limit the current in any way?

I think you could use it, but you would need an insulation transformer, a transformer that has an equal input and output adequated to your mains, otherwise you would turn off the breakers. However, hydrogen generators work better with voltages of around 2v per cell, so, you would have to put enough neutral plates (plates that aren't connected to anything) between the plates with wires connected, so, if you live in a 220v region it would be 220:2=110 110-2=108 neutral plates.
framistan3 years ago
You might want to investigate ebay for a hydrogen generator kit. I read somewhere that if you use a PULSED DC voltage rather than a constant DC... then it produces more hydrogen with even LESS amperage. If I remember right, it was something like a 600 cycle DC pulse... but not certain about that. They may sell the kits on ebay. They did a few years ago.
rickharris3 years ago
The issue is the amount of current your going to draw. Tap water or water with other added salts conducts electricity fairly well. A hig voltage will drive many amps through the water - Yes it will electrolyse it BUT there will be a lot of other bad stuff going on.

You need as said 9 to 12 volts and a few milli amps.
Ideally you want to use between 9V and 12V. You don't want to rectify mains voltage and run 120VDC through it. That gets quite dangerous. If you want to use mains power rather than a battery then use a 12V transformer and rectify the 12VAC over to 12VDC.