On 28/10/2010 12:05, Michael Watterson wrote:
> R1 R2 Potential Divider at all the sources and switch the low voltage?
>

Great idea, but would prefer to have just the one PD to avoid having to=20
calibrate against the tolerances of other ones. Could use precision=20
resistors I suppose, but am not yet sure about cost/benefit of that=20
compared to finding some suitable switching method.

--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.