HOW THE LOADING OF AN AC/DC TRANSFER STANDARD CAN EFFECT YOUR MEASUREMENTS OF AC VOLTAGE AND CURRENT.

摘要

AC Voltmeters and AC/DC Transfer Standards can cause significant loading errors when measuring many types of sources at the mV level and frequencies above 100 kHz and also below 100 kHz when used with high resistance current shunts. This paper explains the sources of this error, how to measure it and some typical loading errors to be expected with Fluke AC/DC Transfer Standards. This paper is a follow up to a preliminary paper on this subject given at NCSL 97 and offers refinements and new information.