Accurate AC/DC voltage measurements using electrostatic comparator

The electrostatic AC-DC voltage comparator for precise voltage measurement in voltage range of 100–1000 V and frequency range of 20–100,000 Hz was designed. The equality of AC and DC voltages transforms into horizontal positioning of the beam, which is registered by two photoelectric transducers. DC...

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Bibliographic Details
Published in:Journal of electrostatics 2016-08, Vol.82, p.17-21
Main Authors: Nefed'ev, A.I., Nefed'eva, E.E.
Format: Article
Language:English
Subjects:
Electrode
Electrostatic
Electrostatic transducer
Photoelectric transducer
Voltage comparator
Voltage measurement
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Summary:The electrostatic AC-DC voltage comparator for precise voltage measurement in voltage range of 100–1000 V and frequency range of 20–100,000 Hz was designed. The equality of AC and DC voltages transforms into horizontal positioning of the beam, which is registered by two photoelectric transducers. DC voltage was measured by voltage divider, standard cell and low-voltage comparator. The construction, main characteristics, and sources of errors are described. The comparison error has been determined as having the value of 0.003% at the voltage of 100 V and the value of 0.0009% at the voltage of 1000 V. •AC-DC voltage comparator compares the moments generated by applied AC and DC voltages.•The beam AC-DC voltage comparator is mounted by a system of eight tout bands.•The equality of AC and DC voltages is determined by the horizontal position of the beam.•The error of designed electrostatic comparator is in the range of 0.003–0.0009%.
ISSN:0304-3886
1873-5738
DOI:10.1016/j.elstat.2016.04.005