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Re: [OM] Any 4Ti's made with the high drain circuit?

Subject: Re: [OM] Any 4Ti's made with the high drain circuit?
From: John Hermanson <omtech@xxxxxxxxx>
Date: Wed, 01 Jul 1998 09:16:42 -0400
I remember we had a post recently from Eveready, explaining how the 357 battery
was designed specifically for devices with constant low level drain.  It really
works.

John

Kennedy wrote:

> In article , Terry and Tracey <foxcroft@xxxxxxxxxxxxxxxxxxxxxx> wrote
> >What type of meter were you using? What resistance did it add to the
> >circuit? What was it's minimum accurate measurement?
> >
> >Foxy
> >
> >>
> >>Anyone heard of a 4Ti with high drain circuits?  Seems unlikely to me,
> >>since it has all the usual support for the F280 flash etc., which the
> >>OM-4 doesn't have.  I guess this one might be well out of adjustment,
> >>although the test films seemed fine.  Any ideas?
> >
> >
> >
> AVO M2007, 4 figure digital ammeter on 300uA FS range, quoted accuracy
> is +/-10f reading and +/-1 digit - its not mine, borrowed from work
> and regularly calibrated.  Based on this, accuracy should be
> 10uA+/-0.2uA.  The actual reading jumped around more than this, but
> averaged around 10uA.
>
> I did have similar concerns to those you seem to have which is why I got
> the OM-4 out to measure it with the same meter.
>
> I think I'll try leaving the OM-4 battery in circuit and compare it with
> the OM-4Ti's to see if either of them last longer than a few months.
> The OM-4 was serviced a few years ago, but I didn't think they replaced
> the circuit, and I expect they would have told me if they had.  I might
> just be lucky I guess, but it certainly used to drain batteries like it
> was going out of fashion.
> --
> Kennedy
> Yes, Socrates himself is particularly missed;
> A lovely little thinker, but a bugger when he's pissed.
> Python Philosophers         (replace 'nospam' with 'kennedym' when replying)
>
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