High accuracy voltage standard for voltmeter calibration has two J-DACs with multiplexer switched between them to give varying output signal

摘要

A high accuracy voltage standard has two J-DAC (Josephson Digital to Analogue converters) (1, 2) with microcomputer (6) controlled (5) multiplexer (7) switching between their output voltages (3, 4) in conjunction with the JDAC inputs to create a varying voltage (13) with minimal transients at the output (8).