Olin Lathrop wrote:
> Jon Chandler wrote:
>   =20
>> One lesson learned...with ten 47k resistors for the ladder, it worked
>> well.  With 2k resistors, the results weren't as good.  You need to
>> keep the input impedance of the ADC in mind.
>>     =20
> You do, but the impedence required of a A/D signal has a upper limit, not=
 a
> lower limit.  Therefore it makes no sense that the 2K version didn't work
> when the 47K version did.  This indicates that the 2K version probably ra=
n
> into other problems, like too much current being drawn somewhere causing =
a
> voltage droop.
>
>
> ********************************************************************
> Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products
> (978) 742-9014.  Gold level PIC consultants since 2000.
>   =20
Crap....sorry about that typo!  470 ohm resistors worked well.  2k=20
didn't work as well.


Jon



--=20
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