Re: [CAD_CAM_EDM_DRO] 1.5 volts

In a message dated 8/17/00 8:28:50 AM Central Daylight Time,
jvicars@... writes:

<< What I want to know is WHY a chemical battery always produces
approximately 1.5 volts? A quick and dirty chemistry lesson is
all I want, so I can impress my co-workers.

>>

See "ni-cad" (about 1.25 VDC) and "mercury cell" (forget; something like 1.3
V?). There are two metals, one for the "cathode" and the other for the
"anode" in a chemical arrangement where ONE is the "fuel" (gets "eaten" by
the chemistry as the battery (oops! CELL!) is used (see the corrosion on an
old zinc-cell, formally known as the "Leclanche cell"). Actually, this
latter is more like 1.55 or 1.56 VDC. A "9VDC transistor-battery" will
actually measure a tiny bit OVER 10 VDC when "fresh". But after three
seconds of use, this drops to maybe 9.5 VDC. Off topic.