A System for Accurate Direct and Alternating Voltage Measurements
- 1 December 1965
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement
- Vol. IM-14 (4) , 215-224
- https://doi.org/10.1109/tim.1965.4313479
Abstract
A system for calibrating and using a group of dc and ac standards has been developed at NBS to meet increasing needs for greater accuracy in the measurement of direct and rms alternating voltages at audio frequencies. With a group of saturated cells, a universal ratio set as a potentiometer, a simplified self-calibrating volt box, and a new differential-thermocouple ac-dc comparator, an accuracy of 10 ppm can be obtained for direct voltage measurements and 40 ppm for rms alternating voltage measurements between 20 and 20 000 c/s, in terms of the direct volt and the ac-dc transfer standards maintained at NBS.Keywords
This publication has 2 references indexed in Scilit:
- Portable Potentiometer and Thermostatted Container for Standard CellsReview of Scientific Instruments, 1955
- A New Instrument for the Measurement of Alternating CurrentsTransactions of the American Institute of Electrical Engineers, 1905