I just noticed a blunder of mine in looking at Mike's reply. I meant to
say that I thought my devices were charged "adequately". I imagine a
spell-checker got the best of me. Give me time; someday I'll learn to
proofread!
Mike Rooke wrote:
>
>
> Recorder, PIP Voltage, Current when Shorted (tip to gnd).
>
> Edirol R09HR, 2.999V, 1251uA
> Korg MR1, 3.2V, 340uA
> Olympus LS10, 3.010V, , 1338 uA
> Sony D50, 2.866V, 611uA
>
> -Mike.
> Measured with a Fluke 189.
>
> --- In
> <naturerecordists%40yahoogroups.com>, Robb Nichols <>
> wrote:
>
> > I had three portable items within reach from my desk: Zoom H2 recorder,
> > M-Audio transit sound interface (typically used with a netbook), and
> our
> > UPA-1 waterproof preamp. Read values below in this respective order. I
> > didn't check the battery condition on any of these, but I think they
> > were all charged inadequately.
> > >
> > >
> > > 1. Maximum voltage available (meter switched to volts) and connected
> > > between sleeve and tip or ring
> > >
> > 2.49, 2.23, 8.58 VDC
> > >
> > > 2. Maximum current available (meter set to mA or uA) and connected
> > > between sleeve and tip or ring
> > >
> > 1.18, 0.21, 1.27 mA
> > >
> > > 3. Voltage across a known resistor (ideally around 1000 ohm) connecte=
d
> > > between sleeve and tip or ring
> > >
> > 0.79, 0.19, 1.09 VDC
> > >
> > > 4. Value of that resistor in ohms
> > >
> > 1K (0.986K measured)
> > >
> > >
> >
>
>
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