On Wed, 25 Aug 1999 15:04:08 -0700, Victoria Welch <[email protected]>
wrote:
> Instead of manually switching this every 20 minutes (not sure where I
>got that value, maybe Bob?), I took a BASIC Stamp 1 microcontroller and
>wrote a program that would accomplish this. The electronics appeared,
>in initial testing to work flawlessly, but some events at the "end" of
>the process (I declared a current flow of 3.00 ma to be the "end" of the
>process). The value was chosen as it was I was getting from the single
>polarity LVDC method that I had been using with success(? - no PPM
>values are available, just between 2.5 and 3.0 ma, the finished product
>*tastes* like CS I had previously purchased).
Damn!
It looks like I am going to be pushed into this stamp stuff! I can't
ignore it when it keeps turning up every time I turn around.
What's the best way to get up to speed? Does Radio Shack have a hobby
kit? Is there a general purpose kit? I really don't have much interest
in robotics, but here's an app for CS and another list was
investigating apps for mind machines.
This is very exciting Vikki, congratulations!
I suggest you lower your ending current to eliminate the sparkles in
your tyndall.
I'm not sure, but perhaps you're running into the "starved electrode"
effect described in a past post by Bob Lee
I'm inserting a copy....I'm sure it will interest you anyway...
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Hello Ken, Andrew and other paragons of CS,
The Starved Electroded was discovered quite by accident while
during
experiments for constructing current density tables. Any good meters
will be satisfactory, however I was using an RS model 174B LCD Digital
Auto-ranging multimeter, a couple of RS model 803 LCD Digital
Auto-ranging multimeters, a Simpson 260 multimeter and a Calectro
model
H3-361 multimeter. The RS 174B also measures temperature.
The thing to do is get the electrode potential at 13.3% above the
electron ionization potential. For the Ag atom the Potentials are ;
Ag I 7.542v 13.3% over is 8.5v
Ag II 21.4v 13.3% over is 23.8v ( in the range of 3 nine volt
batteries)
Ag III 35.9v 13.3% over is 40.7v
I would select a current I wanted to run at,such as 3 ma ( in my case
that would be 4.5ua/mm2 of wetted electrode area) and keep the current
at 3ma or under during the run. Start the run and let the current
build
up to the limit you have selected for the experiment. Begin increasing
series resistence to the electrodes ,alway keeping the current at 3ma
(any current you select). As the conductivity of the CS becomes higher
the current will try to rise and you need to keep increasing the
series
resistance. Monitor the electrode voltage and current all the time and
tabulate it as you go. If you don`t have time to stay with it don`t
bother to try, as it needs constant monitoring. Every 5 minutes stir
the
water CCW and record the current before and after stirring. Normally
after each stir the current will drop as the CS is dispersed from the
vicinity of the electrodes.I use four sets of electrodes, located
around
the edge of the vessel. My stirring is in the middle of the CS
solution. Your tabulation (charting) will look like a series of
sawteeth. As the solution becomes saturated and the electrode voltage
reaches the target potential a strange thing will happen. Each time
you
stir the CS the current will INCREASE (instead of decreasing) and you
will find that the tabulated sawteeth will be reversed from the
previous
sawteeth. Each time you stir the saturated CS the solution is
increasing
(adding to) the energy of the circuit and the current rises
momentarily.
Once the the sawtooth reversals are evident the current will no longer
increase, it becomes self regulating. The CS ppm will level off and
remain steady. I usually let it run another 30 minutes to ensure
complete saturation. The solution is now saturated, will not accept
any
more ions. The ionic potential is now 13.3% above the ionization
potential. It is maintaining a status quo, the ionic potential is
balancing the external potential applied to the electrodes. Under this
condition the ionic potential will cause the ppm to begin to rise when
external power is removed. The energy stored in the CS being used to
continue the CS making process. This was also discovered not too long
ago by another of our experimenters. :-)
Sometimes I would stop and let the solution set for many hours and
start it again to see what would happen. It always started where I had
left off. The self ppm rise will only happen after the solution is
saturated and at high energy.
Bless you Bob Lee
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Chuck
If you don't press enter, nothing happens.
--
The silver-list is a moderated forum for discussion of colloidal silver.
To join or quit silver-list or silver-digest send an e-mail message to:
[email protected] -or- [email protected]
with the word subscribe or unsubscribe in the SUBJECT line.
To post, address your message to: [email protected]
List maintainer: Mike Devour <[email protected]>
