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Displaying records 21 to 30 of 35 records.
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21. Johnson Noise Thermometry Measurement of the Boltzmann Constant with a 200 Ohm Sense Resistor
Topic: Quantum Electrical Measurements
Published: 7/1/2012
Authors: Alessio Pollarolo, Tae H. Jeong, Samuel Paul Benz, Horst Rogalla
Abstract: In 2010 NIST measured the Boltzmann constant k by use of an electronic technique that measured the Johnson noise of a 100 Ohm resistor at the triple point of water (TPW). The NIST Johnson noise thermometry (JNT) system used as a reference a voltage ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910628

22. Johnson Noise Thermometry Measurement of the Boltzmann Constant with a 200 Ohm Sense Resistor
Topic: Quantum Electrical Measurements
Published: 6/1/2013
Authors: Alessio Pollarolo, Tae H. Jeong, Samuel Paul Benz, Horst Rogalla
Abstract: In 2010, NIST measured the Boltzmann constant k with an electronic technique that measured the Johnson noise of a 100 Ω resistor at the triple point of water (TPW) and used a voltage waveform synthesized with a quantized voltage noise source (QV ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911711

23. Johnson-noise thermometry based on a quantized-voltage noise source at NIST
Topic: Quantum Electrical Measurements
Published: 9/11/2013
Authors: Alessio Pollarolo, Tae H. Jeong, Samuel Paul Benz, Paul David Dresselhaus, Horst Rogalla, Weston Leo Tew
Abstract: Johnson Noise Thermometry is an electronic approach to measuring temperature. For several years, NIST has been developing a switching-correlator-type Johnson-noise thermometer that uses a quantized voltage noise source as an accurate voltage referenc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910730

24. Method for Ensuring Accurate AC Waveforms with Programmable Josephson Voltage Standards
Topic: Quantum Electrical Measurements
Published: 6/1/2013
Authors: Charles J Burroughs, Alain Rufenacht, Samuel Paul Benz, Paul David Dresselhaus
Abstract: The amplitudes of stepwise-approximated sine waves generated by programmable Josephson voltage standards (PJVS) are not intrinsically accurate because the transitions between the quantized voltages depend on numerous conditions. We have developed a m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911695

25. Method for Ensuring Accurate AC Waveforms with Programmable Josephson Voltage Standards
Topic: Quantum Electrical Measurements
Published: 7/1/2012
Authors: Charles J Burroughs, Alain Rufenacht, Samuel Paul Benz, Paul David Dresselhaus
Abstract: The amplitudes of stepwise-approximated sine waves produced by programmable Josephson voltage standards (PJVSs) are not intrinsically accurate because the transitions between the quantized voltages depend on numerous conditions. We have developed a m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910626

26. Nonlinear Behavior of Electronic Components Characterized with Precision Multitones from a Josephson Arbitrary Waveform Synthesizer
Topic: Quantum Electrical Measurements
Published: 6/3/2009
Authors: Samuel Paul Benz, Ryan C. Toonen
Abstract: We have extended the application of quantum-based electrical standards from single frequency calibrations to multi-tone tests that can be used to characterize the nonlinear behavior of electronic components and circuits. Specifically, we have used a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=33176

27. Operating Margins for a Pulse-Driven Josephson Arbitrary Waveform Synthesizer Using a Ternary Bit-Stream Generator
Topic: Quantum Electrical Measurements
Published: 4/1/2009
Authors: Ernest Houtzager, Samuel Paul Benz, Helko vanden Brom
Abstract: We describe measurements with a pulse-driven Josephson arbitrary waveform synthesizer (JAWS) that uses a ternary arbitrary bit-stream generator as the bias source. This system is meant to be used as an AC Josephson voltage standard (ACJVS). From thes ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=33059

28. Operating Margins for a Superconducting Voltage Waveform Synthesizer
Topic: Quantum Electrical Measurements
Published: 6/1/1999
Authors: Samuel Paul Benz, Clark A. Hamilton, Charles J Burroughs
Abstract: Operating margins for biolar superconducting voltage waveform synthesizer were measured. Current ranges were determined for 101 equally spaced dc voltage steps between - 18.6 and + 18.6 mV. The measured voltages of these steps deviated from the exp ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=176

29. Precision Differential Sampling Measurements of Low-Frequency Voltages Synthesized with an AC Programmable Josephson Voltage Standard
Topic: Quantum Electrical Measurements
Published: 6/9/2008
Authors: Alain Rufenacht, Charles J Burroughs, Samuel Paul Benz, Paul David Dresselhaus, Bryan C Waltrip, Thomas L Nelson
Abstract: Sampling is a promising technique to compare the stepwise-approximated sine waves synthesized by an AC Programmable Josephson Voltage Standard to the sinusoidal voltages of a secondary source at low frequencies (a few hundred Hz or less). This paper ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32900

30. Progress Toward an AC Josephson Voltage Standard
Topic: Quantum Electrical Measurements
Published: 6/1/1996
Authors: Clark A. Hamilton, Charles J Burroughs, Samuel Paul Benz
Abstract: Progress toward a Josephson voltage standrd for fast dc measurements and ac waveform synthesis is described, including a version with SNS junctions operated at 11 GHz. A bias control circuit that achieves millampere drive capability, transient suppr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=13254



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