hmm i should have spotted that lol :) 400mV makes sense lol
Quoting Koen Kooi <koen@vestingbar.nl>:
> > I dont really know anything about the power mod', but i am a little
> > worried
> > about the max_voltage being 400+, surley this isnt a voltage
> > measurement? :S I
> > guess it is a measurement of somthing else...?
> >
> It doesn't have to be Volts, it can be miliVolt or deciVolt. But my
> ipaq has a 3.7V 900mAh battery. My guess is that the charger measures
> the voltagedifference between the chargerpins, which are protected
> against reverseconnecting by a diode. A diode typically has a voltage
> drop of 0.6 Volt[1]. Adding the 3.7V and the 0.6V gives me 4.3V. This
> leads me to believe that the ipaq measures the voltage in steps of
> 1/100 V. These three years of studying EE are paying off :).
>
> regards,
>
> Koen
>
> [1] http://www.interq.or.jp/japan/se-inoue/e_diode.htm
>
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