Thank you, Steve, for your answer.
At this moment I am brewing 1200 ml batches with a huge 250 gr 999 swiss
silver ingot that I located here. My cathode is a large stainless steel
spoon, placed 75 mm apart, in a very wide mouth glass jar.
I was in the process of finding a jeweler to melt the ingot and convert it
into silver rods or whatever, and was having difficulty trying to get this
made without contamination from gold alloys, and Mike suggested using it as
the anode...which seemed to me a very comical but bright idea! I immediately
put it into practice, and I like the results very much.
Using this method, unattended during 4.5 hours, during the day, no stirring,
no cleaning, I am producing cristal clear, no color, no residues, EIS, with
an average of around 15 ppm, with a beginning amperage of of 0.5 mA and a
final amperage of 2.4 mA, average around 0.84 mA, using 15% from previous
batch as a starter. At the end of the process, the spoon (cathode) is
covered with a dark grey creamy looking coat of silver oxide, which I easily
clean with a paper towel. The ingot anode I also clean the same way, but
naturally remains slightly stained. I do not know yet of any way I can leave
it totally clean like I do with my thin wire electrodes using slightly
abrasive Scotchbrite material, without getting it all scratched. It has high
relief lines, seals, numbers and words in it, and I am not planning to sand
it all down until it gets smooth. I think the best way to maintain it clean
would be changing the polarity.
Since I only have one, I have considered simply cutting it in two so that I
can have both electrodes identical and that way I can switch polarity from
one batch to the other. I have not done it because that way the anode
immersed area would be only half and all will change.
I am also using the same setup in a one gallon glass mayonnaise jar,
electrode spacing 70 mm, and get good results also after 7 hours, but I do
not like the final 2.8 mA.
As soon as I can I will place in series a current limiting diode, but for
this temporary setup with only one huge electrode like mine (around 11x45x42
mm immersed area) I do not have any idea of what should the characteristics
be. (I am going to use the trial and error method anyway, and I will begin
with the 0.2 milliamperes you suggest...!)
Once I can manage to have sent from USA some 10 and 12 ga silver wire, I
will have other options. Even though I like very much its simplicity of
operation, I have not built your circuit yet due to the lack of adequate
electrodes, but they will eventually get here.
I am very stubborn and, with the help of all of you friends, I am learning a
lot.
Best regards.
Carlos
From: "S&JY" <youngst...@konnections.net>
Reply-To: silver-list@eskimo.com
To: "Silver List" <silver-list@eskimo.com>
Subject: Re: CS>Polarity Switching ?...-Some thoughts about it.
Date: Fri, 24 Nov 2006 08:05:05 -0700
Carlos,
In practice, it takes a finite amount of time, every time the polarity is
switched, for the flow of ions to stop and reverse direction. During that
time, ion production is less. So in practice, a polarity switched setup
will produce less silver in solution than an unswitched version, keeping
all
other parameters the same.
Some people, myself included, just switch electrodes every batch to keep
electrode wear the same, and don't bother with the extra complication of
polarity switching. Going another step, if you reduce the constant current
to about 0.2 milliamp (0.0002 amp), so that your production takes 24 hours,
you can eliminate stirring as well. The normal Brownian movement of the
water will be all the "stirring" that is needed.
If you need higher production, your wall adapter can run up to hundreds of
1
quart CS generators at the same time, each consuming only 0.2 milliamp.
Just add a 0.2 ma constant current diode in series with each quart brewer &
connect them all to your wall adapter. An ppripriate diode is 1N5283 (0.22
ma), available from Mouser.
--Steve Y.
----- Original Message -----
From: "Carlos Pérez" <explorer...@hotmail.com>
To: <silver-list@eskimo.com>
Sent: Thursday, November 23, 2006 1:57 PM
Subject: CS>Polarity Switching ?...-Some thoughts about it.
> Friends,
>
> From what I understand, the object of polarity switching in the process
of
> brewing AIS is to eliminate the normal silver oxide accumulation in the
> cathode and the harder coat of silver oxide in the cathode, which
maintains
> both electrodes clean.
>
> A determinate ammount of silver oxide will be produced in batch "A"
without
> polarity switching, which at the end of the process will have produced a
> noticeable moderate dark grey "beard" on the cathode.
>
> If we have an identical batch "B" (identical water quality and ammount,
> temperature, process time, current flow, container, electrodes, etc.)
and
> have polarity switching during the process, I assume aproximately the
same
> ammount of silver oxide will be produced, but instead of accumulating it
is,
> in every switching of the polarity, solving into the water, aside from
the
> ions and colloidal particles being produced.
>
> If, after batch "A" is finished, the current is stopped and the
electrodes
> left in the produced EIS, after a few seconds the cathode "beard" starts
> turning into a "cascade" mostly dissolving in the produced batch, and a
> smaller part sedimenting at the bottom of the glass jar.
>
> If this is the case, the only basic difference between "A" and "B" would
be
> cleaner electrodes in "B". Both will have a determined ammount of silver
> oxide incorporated, instead of being cleaned off at intervals during the
> process.
>
> Regards
>
> Carlos
>
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