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are looking at. From a lot of the other experimenters , I suspect that you
still need the constant current as well as the Pulsed High Voltage to "Whack
Off " the bubbles.
Statistics: Posted by glenn_aircooled — Fri Jun 02, 2006 8:31 am
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Not sure if this link will work?
Steve
Statistics: Posted by stephano — Fri Jun 02, 2006 7:05 am
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This being 2 pairs of SS Tweezers (not worried about the small size at this stage)
With these 2 'electrodes', spaced at 5MM and hooked upto my variable PSU.
29.7V DC (psu limit) and 410 mA, I get fairly good gas production using plain tap water.
I obviously wanted to increase gas output, after a bit of head scratching as to what to try as electrolyte? I remembered I had some De-Scaler, in the form of Sulphamic Acid (crystal form..looks like sugar)
I added a tiny pinch of this to my tap water into a 1 litre sodastream bottle and re-tested, this produced much more gas, volts still at 29.7V, amps slightly more, now at 660mA. (I did try a really heavy concentration initially (one teaspoon) this pulled 2.5A @19V was a bit nervous about this and scrapped that mix)
Obviously with proper electrodes of decent size etc this would be much higher. But the thing that I was suprised at, was the very small amount of added sulphamic acid, about 1/10th of a teaspoon worth.
I'm wondering if this electrolyte is a reasonable alternative to the usual sodium hydroxide? possible in low concentrations? this stuff is hellish conductive
When time permits, I'll scale this up to a normal size cell, for further testing, this time with PWM drive.
Thoughts and comments welcome.
Steve
Statistics: Posted by stephano — Thu Jun 01, 2006 12:42 pm
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