[volt-nuts] Fluke 750a batteries.............

[NeonJohn]

On 09/25/2015 08:53 AM, David Garrido wrote:


> I have been able to find Wein batteries that are 1.35v zinc/air and I
> could stack and shrink wrap 5 of those in series to arrive at 6.75
> very stable volts, but they are a minimum of $4.50 each cell.  I was
> hoping to find a more affordable / elegant solution.

Zinc-air won't work.  Once the seal is broken, the lifetime is measured
in days.  BTDT.

The unit is probably relying on the batteries as a voltage reference so
you really need the mercury batteries unless you want to design a stable
reference.

Fortunately Mercury batteries are still available from Russia.

http://www.px625.ru/

The guy has a good rep.

John


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