AC-DC difference of millivolt thermal standards
De-Xiang Huang · 2002
The error sources of AC-DC differences of millivolt thermal standards-micropotentiometers (/spl mu/pot's)-and the step down calibrations of /spl mu/pot's from 20 Hz to 1 MHz are analyzed. The new step down method for sub-mV ranges significantly reduces the /spl mu/pot's uncertainty.