Natural Science Forum / Chemistry / Electrochemistry / December 2005

The Pentagon has admitted that the U.S. intelligence agencies called the
N.S.A. [ National Security Agency ], C.S.S [ Central Security Service ],
D.I.A. [ Defense Intelligence Agency ], D.A.R.P.A. [ Defense Advanced
Research Projects Agency ], C.I.A. [ Central Intelligence Agency ], ...

does anybody know how you can create a constant cathodic voltage (+/- 0
mV SHE) or a constant current ranging from 1 up to 200 mA. The electron
supply should not vary too much. I know a potentiostat can do the job,
but it's too expensive. I assume that the high cost for a ...

Got a diesel, and it gets cold here.  There's a block heater, but I also
have a 1A charger that could be attached to the same extension cord - would
there be any drawback/problems with leaving this connected (on the battery
side) _all_ the time?  It's a cheapo transformer & diode ...

I am using two 75 Ah "Optima Yellow Top" AGM batteries in my camper.
When I apply a current step function from 2,5 A to 29 A the voltage
drops from 12,5 V to 12,14 V. This is equivalent to an internal
resistance of 13 milliOhm !!

Are AGMs really better batteries than flooded cell batteries?
Will the wet cells ever be totally obsolete and be replaced by AGM?
Assuming the cost were the same, which would you buy?
If AGMs ever reach volume production and bring the price down, wet cells

I was the guy that posted about leaving a 1A charger connected in my diesel.
What I wanted to know was would there be any problems leaving the charger
conncted TO THE BATTERY all the time - like when the car is being driven.
If not, I'll mount it on the (inside) fender and wire it ...

I was looking to buy a new battery charger primarily for AA NiMH batteries.
I sick of my old el-cheapo, claim to be "smart" chargers.
I've narrowed the choice down to 3...
1 > RipVan100 Lightning Pack 4000N

How can I produce hydrogen using electrolysis at 3 psi? tia sal
Greetings All,
I'm trying to find a way to produce hydrogen at around 3 PSI continually
over time using electrolysis.  I'm currently using a Hoffman Apparatus,

I have seen and accepted the assertion that "float chargers" will not
overcharge your lead-acid battery but "trickle chargers" will.  After
some experimentation, I am not so sure.  It appears to me that most
"float chargers" do not at all sense what is happening in the battery;