Archived posting to the Leica Users Group, 2000/11/09

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Subject: Re: [Leica] mechanical shutters
From: "A.H.SCHMIDT" <horsts@primus.com.au>
Date: Thu, 09 Nov 2000 23:59:31 +1100
References: <B62F599A.90FF%howard.390@osu.edu>

Martin Howard wrote:

> Javier Perez jotted down the following:
>
> > There's only one type of electronic component that can  reasonably be expected
> > to deteriorate in an electronically timed shutter. It's the capacitor or
> > capacitors that govern speed as a function of discharge rate.
>
> Oh really?  What about the integrated circuits that have been popular in
> cameras with electronically timed shutters for the past 25 odd years?
>
> M.
>

  Javier. these days the timing capacitors don't deteriorate anymore. they either
use tantalum, or plastic insulated capacitors. Even electrolytic capacitors, which
are not normally used, because of the large initial tolerance, don't deteriorate
anymore.

Regards, Horst Schmidt

Replies: Reply from Javier Perez <summarex@yahoo.com> (Re: [Leica] mechanical shutters)
In reply to: Message from Martin Howard <howard.390@osu.edu> (Re: [Leica] mechanical shutters)