Mercury use (WAS RE: hospital surplus)
ard at p850ug1.demon.co.uk
Thu Mar 23 18:05:42 CST 2006
> And as primary cells--mercury cells have a remarkably stable voltage output
> over their life.
[Looks sadly at all the classic cameras around here that are more
difficult to use now that ther mercury cells for the exposure meters are
unavailabe. Yes I do know of the work-arrounds...]
IIRC the Weston standard cell is a mercury/cadmium couple.... Although to
be fair a good bandgap voltage reference is accurate enough for anything
I am likely to need, and a lot less hassle.
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