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Zyklon-A
International Hazard
Posts: 1547
Registered: 26-11-2013
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Mood: Fluorine radical
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This might be a stupid question, but can alternating current be used for chlorate production? I generally use MMO for the anode as well as the
cathode, so if the positive and negative terminals alternate (about 60 times per second) each electrode is an anode and cathode half of the time.
Would this not work?
If not, why?
[EDIT] One reason I can think of is as each product is produced, it might reverse and reduce anything that was just oxidized, and oxidize anything
just reduced because there isn't enough time for it to migrate to the other electrode. Is this the reason?
I though ions would move fast enough for this to not affect anything much, maybe not...?
[Edited on 26-8-2014 by Zyklon-A]
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nannah
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How do you scale down the bromine, (and other electrochemical experiments) so a power supply with 5A can be used?
/Nannah.
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gdflp
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To scale down electrochemical experiments you need to figure out the surface area of your electrodes. Generally the amount of current needed is
directly proportional to the surface area of the electrode you are using. So, to scale down experiments by two for example, halve the amount of
reagents you are using and use electrodes with half of the surface area. Even if the current is lower than specified by the experiment, you could
still use the 5A supply, it will just take longer due to less electrons being conducted through the solution, again time is directly proportional to
current.
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nannah
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Ofcourse. It sounds so obvious when you say it. Why couldnt i thought of that? 
I am planning on converting a old computer psu to bench power supply. I have been under the impression that its a very complex process, but yesterday
i saw a video on youtube, and it is ridiculously simple to do if you have the parts, and the tools.
What amps can you get with a apx psu? It say that the output is +3,3V - 14A max, +5V - 22A max, and +12V- 10A max.
Is it really possible to get up to 22A then? :/
/N.
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gdflp
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Yes each output can be one of three voltages, and each of these voltages is connected to a fuse. So at 5V you can pull 22A, and at 3.3V you can pull
14A etc.
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nannah
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Ok, but its not possible to adjust the current or voltage, so you have to keep it at 10A, 14A or 22A, right?
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WChase501
Harmless
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Location: Hot Springs Arkansas
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Have you thought about a computer power supply unit?
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jock88
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http://www.sciencemadness.org/talk/viewthread.php?tid=3885&a...
Circuit for constant current out below
using irfz44n You can get bigger ones.
http://oxidizing.typhoonguitars.com/chlorate/cpsu.html
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