A Bias Source for Dynamic Voltage Measurements With a Programmable Josephson Junction Array
- 12 March 2007
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement
- Vol. 56 (2) , 495-499
- https://doi.org/10.1109/tim.2007.891061
Abstract
In this paper, the design and test of a compact bias current source for binary-weighted programmable Josephson junction arrays (PJJA) is reported. The new source, driven by a Linux-based real-time controller, enables continuous PJJA updates at a rate greater than 10 kHz. Fast and accurate voltage measurements by null detection against the PJJA are possible, owing to an onboard analog-to-digital converter (ADC). The new source is used in Watt-balance experiments at the Laboratoire National de Metrologie et d'Essais (LNE) and the National Physical Laboratory (NPL) to perform dynamic measurement of the coil voltage during the dynamic phaseKeywords
This publication has 5 references indexed in Scilit:
- The BNM Watt Balance ProjectIEEE Transactions on Instrumentation and Measurement, 2005
- Synthesis of precision AC waveforms using a SINIS Josephson junction arrayPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Improved 1 V programmable Josephson voltage standard using SINIS junctionsPhysica C: Superconductivity and its Applications, 2002
- The NPL moving-coil apparatus for measuring Planck's constant and monitoring the kilogramIEEE Transactions on Instrumentation and Measurement, 1997
- An optical-fibre ring interface bus for precise electrical measurementsMeasurement Science and Technology, 1991