Analysis of different measurement setups for a programmable Josephson voltage standard. - Ralf Behr; Johannes Kohlmann; Theodoor J. B. M. Janssen; Peter Kleinschmidt; Jonathan M. Williams; Sophie Djordjevic; Jean-Pierre Lo-Hive; François P. M. Piquemal; Per-Otto Hetland; Dominique Reymann; Gunnar Eklund; Christian Hof; et al. (IEEE Trans. Instrum. Meas., 2003)

Counting electrons one by one-overview of a joint European research project. - Helko E. van den Brom; Oswin Kerkhof; Sergey V. Lotkhov; Sergey A. Bogoslovsky; Gerd-Dietmar Willenberg; Hansjörg Scherer; Alexander B. Zorin; S. Pedersen; C. Kristoffersson; A. Aassime; Per Delsing; Marian A. Taslakov; et al. (IEEE Trans. Instrum. Meas., 2003)

Accurate subpicoampere current source based on a differentiating capacitor with software-controlled nonlinearity compensation. - Helko E. van den Brom; Pieter de la Court; Gert Rietveld (IEEE Trans. Instrum. Meas., 2005)

Realization of a quantum standard for AC voltage: overview of a European research project. - Oleg A. Chevtchenko; Helko E. van den Brom; Ernest Houtzager; Ralf Behr; Johannes Kohlmann; Jonathan M. Williams; Theodoor J. B. M. Janssen; Luis Palafox; David A. Humphreys; François P. M. Piquemal; Sophie Djordjevic; O. Monnoye; et al. (IEEE Trans. Instrum. Meas., 2005)

Vibration Reed Electrometer for Accurate Measurement of Electrical Currents Below 10 pA. - Gert Rietveld; Helko E. van den Brom (IEEE Trans. Instrum. Meas., 2007)

Pulse-Driven Josephson Junction Arrays for High-Precision AC-Voltage Synthesis of Unipolar and Bipolar Waveforms. - Marco Schubert; Gerd Wende; Torsten May; Uwe Huebner; Hans-Georg Meyer; Oleg A. Chevtchenko; Helko E. van den Brom; Ernest Houtzager (IEEE Trans. Instrum. Meas., 2007)

Bipolar Pulse-Drive Electronics for a Josephson Arbitrary Waveform Synthesizer. - Helko E. van den Brom; Ernest Houtzager; Bernd E. R. Brinkmeier; Oleg A. Chevtchenko (IEEE Trans. Instrum. Meas., 2008)

Influence of Sampling Voltmeter Parameters on RMS Measurements of Josephson Stepwise-Approximated Sine Waves. - Helko E. van den Brom; Ernest Houtzager; S. Verhoeckx; Q. E. V. N. Martina; Gert Rietveld (IEEE Trans. Instrum. Meas., 2009)

Operating Margins for a Pulse-Driven Josephson Arbitrary Waveform Synthesizer Using a Ternary Bit-Stream Generator. - Ernest Houtzager; Samuel P. Benz; Helko E. van den Brom (IEEE Trans. Instrum. Meas., 2009)

DC and Low-Frequency Humidity Dependence of a 20 pF Air-Gap Capacitor. - Gert Rietveld; Helko E. van den Brom (IEEE Trans. Instrum. Meas., 2009)

Internally Damped CCC for Accurate Measurements of Small Electrical Currents. - Gert Rietveld; Pieter de la Court; Helko E. van den Brom (IEEE Trans. Instrum. Meas., 2009)

Switching Sampling Power Meter for Frequencies Up to 1 MHz. - Ernest Houtzager; Gert Rietveld; Helko E. van den Brom (IEEE Trans. Instrum. Meas., 2013)

High-Current CT Calibration Using a Sampling Current Ratio Bridge. - Gert Rietveld; Leendert Jol; Helko E. van den Brom; Eddy So (IEEE Trans. Instrum. Meas., 2013)

Sampling Current Ratio Measurement System for Calibration of Current Transducers up to 10 kA With 5·10-6 Uncertainty. - Helko E. van den Brom; Gert Rietveld; Eddy So (IEEE Trans. Instrum. Meas., 2015)

Uncertainty analysis of aggregated smart meter data for state estimation. - Fei Ni; Phuong H. Nguyen; Joseph F. G. Cobben; Helko E. van den Brom; D. Zhao (AMPS, 2016)

AC-DC Calibrations With a Pulse-Driven AC Josephson Voltage Standard Operated in a Small Cryostat. - Helko E. van den Brom; Oliver F. O. Kieler; Stephan Bauer; Ernest Houtzager (IEEE Trans. Instrum. Meas., 2017)

Considerations on the Performance of Multi-point Synchronized Harmonic Measurement System. - Stanislav Babaev; Ravi Shankar Singh; Joseph F. G. Cobben; Vladimir Cuk; Helko E. van den Brom (AMPS, 2018)

Current waveforms of household appliances for advanced meter testing. - Ronald van Leeuwen; Helko E. van den Brom; Dennis Hoogenboom; Gertjan Kok; Gert Rietveld (AMPS, 2019)

Characterization of DC Current Sensors With AC Distortion for Railway Applications. - Helko E. van den Brom; Ronald van Leeuwen; Ralph Hornecker (IEEE Trans. Instrum. Meas., 2019)

An Optoelectronic Pulse Drive for Quantum Voltage Synthesizer. - Jane Ireland; Jonathan M. Williams; Oliver F. Kieler; Ralf Behr; Ernest Houtzager; Ralph Hornecker; Helko E. van den Brom (IEEE Trans. Instrum. Meas., 2019)

Methodology for the Accurate Measurement of the Power Dissipated by Braking Rheostats. - Domenico Giordano; Davide Signorino; Daniele Gallo; Helko E. van den Brom; Martin Sira (Sensors, 2020)

Online Estimation of Cable Harmonic Impedance in Low-Voltage Distribution Systems. - Stanislav Babaev; Sjef Cobben; Vladimir Cuk; Helko E. van den Brom (IEEE Trans. Instrum. Meas., 2020)

Instrument Transformers for Power Quality Measurements: a Review of Literature and Standards. - Gabriella Crotti; Giovanni D'Avanzo; Carmine Landi; Palma Sara Letizia; Mario Luiso; Fabio Muñoz; Helko E. van den Brom (AMPS, 2021)

Voltage Dependence of the Reference System in Medium- and High-Voltage Current Transformer Calibrations. - Helko E. van den Brom; Ronald van Leeuwen; Gert Rietveld; Ernest Houtzager (IEEE Trans. Instrum. Meas., 2021)

Reduction of Static Electricity Meter Errors by Broadband Compensation of Voltage and Current Channel Differences. - Zander Marais; Helko E. van den Brom; Gertjan Kok; Marijn van Veghel (IEEE Trans. Instrum. Meas., 2021)

Comparison of laboratory and grid measurements of 9 kHz to 150 kHz appliance emissions. - Stefano Lodetti; Peter N. Davis; Deborah Ritzmann; Paul S. Wright; Victor Khokhlov; Jan Meyer; Daniela Istrate; K. Kasri; Helko E. van den Brom; G. Ye; Ronald van Leeuwen; Alexander Gallarreta; et al. (AMPS, 2022)

How Instrument Transformers Influence Power Quality Measurements: A Proposal of Accuracy Verification Tests. - Gabriella Crotti; Yeying Chen; Hüseyin Çayci; Giovanni D'Avanzo; Carmine Landi; Palma Sara Letizia; Mario Luiso; Enrico Mohns; Fabio Muñoz; Renata Styblikova; Helko E. van den Brom (Sensors, 2022)

Wavelet-Based Sparse Representation of Waveforms for Type-Testing of Static Electricity Meters. - Stefano Lodetti; Deborah Ritzmann; Peter N. Davis; Paul S. Wright; Helko E. van den Brom; Zander Marais; Bas ten Have (IEEE Trans. Instrum. Meas., 2022)

Inter-Laboratory Comparison of Reference Systems for DC Power Quality Measurements. - Guglielmo Frigo; Ronald van Leeuwen; Helko E. van den Brom; Davide Signorino; Domenico Giordano; Daniele Gallo; Antonio Delle Femine (AMPS, 2024)

Power Quality Measurements in a Low-Voltage DC Microgrid in an Open Parking Garage. - Helko E. van den Brom; Ronald van Leeuwen; J. M. Warmerdam; R. Schaacke (I2MTC, 2024)

Power Grids and Instrument Transformers up to 150 kHz: A Review of Literature and Standards. - Mohamed Agazar; Giovanni D'Avanzo; Guglielmo Frigo; Domenico Giordano; Claudio Iodice; Palma Sara Letizia; Mario Luiso; Andrea Mariscotti; Alessandro Mingotti; Fabio Muñoz; Daniele Palladini; Gert Rietveld; et al. (Sensors, 2024)