What does it mean when an op-amps output is NULL? or Synchronized NULL? they are both different but what do they mean? and why would you want an op-amps output to be NULL or Synchronized NULL?
They aren't using the trim pot to null out the offset voltage like on the datasheets, i know what you're talking about , there is no trim pots in there circuits
I think a NULL output means: the Offset voltage has been Cancelled out some how
Example#1 says"
If the input voltage doesn't change, the op amps output is NULL