Archived posting to the Leica Users Group, 1997/01/07

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Subject: Re: Battery for MR Meter
From: Brian Levy <dlevy@worldy.com>
Date: Tue, 7 Jan 1997 18:55:01 -0500

Thanks for the info. Now I know why I haven't been experiencing problems
with these conversions. I thought I was just lucky - actually, I guess I am.

At 08:25 AM 1/7/97 -0500, you wrote:
>Most European camera gear designed for mercury batteries contains regulated
>circuits which allow the use of silver-oxide or alkaline batteries without a
>loss of accuracy.  I used my MR-4's for two years on silver-oxide and they
>were well within 1/6 stop.
>
>The Japanese designers relied on the flat discharge rate of the mercury cell
>and did not, as a rule, build voltage regulators into their circuitry.
>Thus, most Nikon and Canon, &c, gear DOES require an adapter or Wein cell to
>maintain accuracy.
>
>Thus, worry not about batteries.  Convert to obtainable power sources and
>keep on clicking!
>
>Marc
>
>msmall@roanoke.infi.net  FAX:  +540/343-7315
>Cha robh bas fir gun ghras fir!
>
>
Brian Levy, J.D.
Agincourt Ont.
dlevy@worldy.com