by resident_genius » Mon Dec 28, 2009 9:26 am
Leon-
i'd have no problem taking a reading between the plates if my numbers were any good..... heres why...
the cells resistance has to do with three key points:
-electrode spacing
-electrolyte concentration
-electrode surface area.
however, the resistance of a cell varies with voltage applied, simple R=E/I style calculations. so unless we were using the same multimeter that output the same voltage to check a circuit's resistance, the numbers wouldnt be consistent.
for instance, @ 3.0 DCV, my cell would pull about 25 amps.
R=E/I says it is 0.12 ohms.
and at 3.3 DCV, my cell will run at full speed, 35-40 amps, so my dividing number would be 35, 0.03 ohms.
(i really should sit down one day and plot this on a graph)
as you can see it seems to be what i'd call an "exponentially ascending amperage for subtle increase in voltage.
speaking of which!!!
well, its time to drive my cell to 50 amps. i have two 25A dc-dc converters that are wired to the same breadboard and each is independently voltage adjustable, so now i can fine tune each cell to its full potential.