one sample with 100% endgroups derived from phenylethynlaniline (PEA) with three samples having endgroups of 50% PEA where the other 50% endgroups were derived from the dianhydrides in one case, from the diamines in another case and from phthalic anhydride (PA) endcaps in the final case...
Inverting Input Differential I/O Amplifier The two noninverting inputs provide an easy common-mode control input, particularly if the source is AC-coupled through either blocking caps or a transformer. In either case, the common-mode input voltages on the two noninverting inputs again have a ...