Re: Warning: Bad MD mic inputs

[Dan Dugan <>]

DAN DUGAN:
>I guess in a single-cell powered device
>  > 1.5V is as high as you get...a case for an external plug-in-power box.

DAVE:
>Nah, you can get quite a bit more using a charge-pump DC-DC convertor.

Of course, and I presume that's where the 4V plug-in-power from the
1.5V-supply Sharp 722 comes from. But from the report that started
this thread, it appears some models don't bother to boost up the
voltage for the mic.

-Dan Dugan


________________________________________________________________________
________________________________________________________________________