[sdiy] stupid solder

[Paul Perry]

At 10:51 AM 12/07/02 +0200, Roman Sowya wrote:
>One of the profesors at my Univ. used to say that there's no need
>to use higher accuracy ADCs than 12 bits, because thermal junctions
>from solder points will create bigger voltage errors than any of those
>ridiculous LSBs in high resolution ADCs.
...even if this were right, it would only matter at DC and very low 
frequencies! For ac, thermoelectric effects aren't relevant. And there is
an extensive literature on what to do, when you need 16 or more bit 
accuracy in strain guages etc.
>
>Of course I didn't listen and used 16-bits anyway
...way to go! I guess your professor blocks off the last digits on his CD
player ;D
>
paul perry Melbourne Australia