The quantum vector digital voltmeter of INMETRO

Implementation and performance evaluation of a broadband digital harmonic vector voltmeter

A broadband digital harmonic vector voltmeter proposed previously and studied theoretically by the authors was implemented using a special-purpose, random sampling strategy, to avoid the bandwidth limitations due to the finite conversion time of the sample-and-hold and analog-to-digital-conversion (S/H-ADC) devices. The experimental results have shown that the bandwidth of the instrument is not...

Artificial Neural Network Based Neural Compensation for Vector Voltmeter

Traceability Chain of the Capacitance Unit to Quantum Hall Effect at Inmetro - Four-terminal Coaxial Bridge

− This paper describes the development of a four-terminal coaxial bridge, part of the traceability chain of the capacitance unit to the quantum Hall effect, in construction at Inmetro. This bridge will also be used to calibrate AC resistance and high-value capacitance standards. Here we describe the final construction stages and preliminary measurements of the four-terminal coaxial bridge. We a...

An Analysis of Circulation of Decentralized Digital Money in Quantum Electrodynamics Space: the Econphysics Approach

The study aimed at showing how to create and release cryptocurrency, based on which one can introduce a new generation of this money that can continue its life in the quantum computers space and study whether cryptocurrency could be controlled or the rules should be rewritten in line with new technology. Regarding this, we showed the evolution of money and its uses in economic relations. Accord...

A paramagnetic molecular voltmeter.

We have developed a general electron paramagnetic resonance (EPR) method to measure electrostatic potential at spin labels on proteins to millivolt accuracy. Electrostatic potential is fundamental to energy-transducing proteins like myosin, because molecular energy storage and retrieval is primarily electrostatic. Quantitative analysis of protein electrostatics demands a site-specific spectrosc...