plaming - 18-1-2014 at 07:49
Hello !
a few days ago i have earned an 5-15V 0-20A power supply
Problem : when i put this on my electrolysis cell, i have maybe 0.5A and no more,the power don't want to change the amperage but for the voltage its
ok.
do you have an indea to have the 20A?
thanks !
papaya - 18-1-2014 at 07:50
Larger electrodes!
WGTR - 18-1-2014 at 08:45
...or they could be too large. Some power supplies have fold-back current limiting, actually providing much less current at
1V (for example) than they do at their rated output voltage. It's a safety feature.
BromicAcid - 18-1-2014 at 10:09
You don't say what you are trying to electrolyze. That could be the cause. If you were trying to electrolyze relatively pure water, non-aqueous
solutions with limited ions those would be two immediate situations that would cause low current. So, need more information 
plaming - 18-1-2014 at 11:21
i'm trying to electrolyse satured solution of sodium chloride for having sodium hydroxyde.After another try with bigger electrode,the amperage doesn't
change so i think it's a safety feature as said.
WGTR - 18-1-2014 at 15:22
Can you measure the voltage at the output of the power supply while the cell is operating (i.e., at 0.5A)?
Edit: And also, what is the model number for the power supply? I can take a look at it.
[Edited on 1-19-2014 by WGTR]
Fantasma4500 - 19-1-2014 at 06:59
if its 5-15V then it shouldnt be the voltage messing it up..
perhaps move electrodes closer?
heating solution also makes it more conductive, or well at least my big power supply went +35A when it got really hot, starting at 12A approx