scholarly journals Enhancement of AC high voltage measurements’ uncertainty using a high voltage divider calibration method

2015 ◽  
Vol 6 (2) ◽  
pp. 207 ◽  
Author(s):  
Ali M. El-Rifaie ◽  
Hala M. Abdel Mageed ◽  
Omar M. Aladdin
Keyword(s):  
High Voltage ◽  
Voltage Divider ◽  
Calibration Method

Traceability of DC and AC high voltage measurements using voltage divider calibration

2018 ◽  
Vol 55 (2) ◽  
pp. 109-119 ◽  
Author(s):  
Hala M Abdel Mageed ◽  
Faisal Q Alenezi
Keyword(s):  
High Voltage ◽  
International System ◽  
Voltage Divider ◽  
Calibration Method ◽  
Industrial Applications ◽  
Theory And Practice ◽  
National Standards ◽  
Dc Voltage ◽  
Acceptable Accuracy ◽  
System Of Units

This paper focuses on achieving traceability of high voltage measurements up to 200 kV at the Egyptian National Institute of Standards. The measurement system consists of an AC/DC voltmeter and a universal resistive/capacitive high voltage divider. The voltmeter shows measured voltage values based on the scale factor of the voltage divider. The divider ensures a stable capacitance for AC voltage measurements and an additional resistive parallel path for DC voltage measurements. Both the divider and the voltmeter are calibrated in AC and DC modes. All uncertainty components are taken into account to obtain measured values with an acceptable accuracy. The calibration results in traceability to the national standards, which make measurements using the international system of units. The proposed calibration method is useful for the theory and practice of high voltage measurements in education, industrial applications, and electrical metrology studies.

100 KV Scanning Microscope

1972 ◽  
Vol 30 ◽  
pp. 472-473 ◽  
Author(s):  
A. V. Crewe ◽  
M. W. Retsky
Keyword(s):  
High Voltage ◽  
Voltage Divider ◽  
Electron Gun ◽  
Objective Lens ◽  
Parallel Beam ◽  
Emission Point ◽  
Error Amplifier ◽  
External Reference ◽  
Scanning Transmission ◽  
Transmission Microscope

A 100 kv scanning transmission microscope has been built. Briefly, the design is as follows: The electron gun consists of a field emission point and a 3 cm Butler gun. The beam has a crossover outside the gun and is collimated by a condenser lens.The parallel beam passes through a defining aperture and is focused by the objective lens onto the specimen. The elastic electrons are detected by two annular detectors, each subtending a different angle, and the unscattered and inelastic electrons are collected by a third detector. The spectrometer that will separate the inelastic and unscattered electrons has not yet been built.The lens current supplies are stable to within one part per million per hour and have been described elsewhere.The high voltage is also stable to 1 ppm/hr. It consists of the raw supply from a 100 kv Spellman power supply controlled by an external reference voltage, high voltage divider, and error amplifier.

A HIGH-BANDWIDTH, HIGH-VOLTAGE DIVIDER FOR NEUTRAL INJECTORS

1983 ◽  
pp. 447-453
Author(s):  
P. Kupschus ◽  
S. Haltrich ◽  
H. Reimer
Keyword(s):  
High Voltage ◽  
Voltage Divider ◽  
High Bandwidth

A Quick Response High Voltage Divider

1976 ◽  
Vol 15 (10) ◽  
pp. 2037-2038 ◽  
Author(s):  
Yusuke Kubota ◽  
Noriyuki Kobayashi ◽  
Akira Miyahara
Keyword(s):  
High Voltage ◽  
Voltage Divider ◽  
Quick Response

A high-precision high-voltage divider applied to electron beam energy measurements

2011 ◽  
Vol T144 ◽  
pp. 014063
Author(s):  
W Zhang ◽  
W Chen ◽  
M L Qiu ◽  
Y Q Fu ◽  
R Hutton ◽  
...  
Keyword(s):  
Electron Beam ◽  
High Precision ◽  
High Voltage ◽  
Beam Energy ◽  
Voltage Divider ◽  
Electron Beam Energy

scholarly journals Precision high voltage divider for the KATRIN experiment

2009 ◽  
Vol 11 (10) ◽  
pp. 103007 ◽  
Author(s):  
Th Thümmler ◽  
R Marx ◽  
Ch Weinheimer
Keyword(s):  
High Voltage ◽  
Voltage Divider ◽  
Katrin Experiment

scholarly journals A Two-Stage, Guarded Inductive Voltage Divider with Small Ratio Errors for Coaxial Bridge Applications

ACTA IMEKO ◽  
2012 ◽  
Vol 1 (1) ◽  
pp. 49 ◽  
Author(s):  
Gregory A Kyriazis ◽  
J Angel Moreno ◽  
Jürgen Melcher
Keyword(s):  
Quantum Hall ◽  
Voltage Divider ◽  
Calibration Method ◽  
Hall Resistance ◽  
Two Stage ◽  
Traceability Chain ◽  
Small Ratio ◽  
Capacitance Bridge ◽  
Inductive Voltage Divider ◽  
Terminal Pair

The traceability chain to derive the capacitance unit from the quantum Hall resistance comprises some coaxial bridges. These bridges employ a main two-stage inductive voltage divider to provide the voltage ratio needed. One such divider has been recently constructed and calibrated at Inmetro. The design techniques responsible for the small ratio errors of the device and the calibration method employed are both detailed. The new divider was installed in Inmetro's two terminal-pair coaxial capacitance bridge with significant improvements in the bridge resolution and accuracy.

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