They are laying the current to those electrodes letting them pull as
much current as they will at full power supply voltage.
Not current controlled at around 1 milliamp per square inch of electrode,
but with a maximum current limit somewhere around 20 milliamps to prevent
fires if the electrodes touch each other [if that]
Why current should be controlled and controlled at what level is a whole
science in itself. [Hydration rates, Nernst Diffusion layers, exponential
current rise "runaway" curves etc etc ]
There have been some of this list that have championed 14 microamps per
square inch of electrode, making quart batches in a week?
Electrodes don't have to be at least 1" apart...they have to be positioned
in a repeatable manner to get consistent results. Other effects can be
engineered around as needed. Constant stirring, for instance, makes
electrode distance pretty much irrelevant so long as they don't move and
it's always the same.
Every part of the process is interdependent with every other part, change
one thing and everything else changes too...so, ideally you want to not
have things changing from batch to batch if you want each batch the
same...or even close to the same.
Control what variables that can be controlled, because water is a wild card.
Water variations are why timers can't work.
A very small difference in water can make a many hours difference in time
to get to a given spot in the process and if any two jugs of water are the
same, that would be an accident.
.......or even the same jug of water on different days.
Water has many of ways to change just sitting there and many more when
being used.
ode
At 01:26 PM 8/28/2008 +0100, you wrote:
I understand why I have to have the electrodes at least 1 and a half
inches apart and also understand that closer together will make a brew
quicker, but probably less ppm. Can anyone tell me how some generators
take seven or eight hours to make CS but others claim they make theirs in
three hours or so? This is a quart quantity. Would that mean that their
ppm is less? and how is this achieved. Many thanks. dee
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