High Voltage Standard Capacitor Calibration Scheme
A study on behavioural changes on high voltage capacitors in …
In this paper, the changes of capacitance and ESR with respect to temperature, frequency and DC bias voltage are studied. Several mathematical models …
An accurate on-site calibration system for electronic voltage transformers using a standard capacitor …
This paper investigates a 110 kV on-site calibration system for EVTs, including a standard channel, a calibrated channel and a PC equipped with the LabView environment, and an adaptive full-phase discrete Fourier transform (DFT) algorithm is proposed to extract electrical parameters. Ordinarily electronic voltage transformers …
An offset cancellation technique for comparators using body-voltage trimming
A novel offset cancellation technique based on body-voltage trimming is presented to be used in the comparators employed in high-speed analog-to-digital converters (ADCs) such as Flash ADCs. The proposed offset cancellation is achieved by body-voltage adjustment using a low-power simple analog control feedback circuit …
A high-voltage aqueous lithium ion capacitor with high energy …
Herein, we introduce a double (alkaline–neutral) electrolyte separated with a K + conductive membrane to assemble a lithium ion capacitor (LIC) with high voltage and high energy …
An International Comparison of High Voltage Capacitor Calibration
The suitability of a commercially available, compressed-gas-insulated, high voltage capacitor for precise measurement of ac voltages has been examined by national …
Find out how PowerLabs helps high voltage and high current manufacturing, and testing industries achieve precision and quality standards. We are actively involved in high voltage measurement and testing, participating as a member of IEEE and in subcommittees under High Voltage Testing Techniques (HVTT) that write the standards for High Voltage.
Calibration of High-Voltage Current-Comparator-Based Capacitance and Dissipation Factor Bridges Using Nonsynchronous …
High voltage capacitance bridge can be calibrated at fixed ratios using traceable standard capacitors. Typical ratios to be calibrated are 10 to 1 and 100 to 1. Substitution method ...
A 192-Gb 12-High 896-GB/s HBM3 DRAM With a TSV Auto-Calibration Scheme …
This article introduces a 192-Gb 896-GB/s 12-high stacked third-generation high-bandwidth memory (HBM3 DRAM) with low power consumption and high-reliability traits. New design schemes and features, including internal low-voltage signaling, center strobe calibration, through-silicon via (TSV) auto-calibration, a symbol-correcting in-DRAM ECC, and …
Influence of standard capacitors on the quality of high voltage tests on electrical energy transmission equipments …
M ANY calibrations of high-voltage power equipment depend on standard capacitors. This is the case of voltage transformers, high-voltage dividers [1], and tangent delta bridges, among others [2 ...
A low‐cost digital calibration scheme for high‐resolution SAR …
Compared to the conventional calibration scheme based on LMS, the samples required by our calibration scheme are reduced from 32,000 to 16,000. Figure 8 shows that the SNDR is improved from 54.1 dB to 68.1 dB with the proposed calibration scheme when the sampling rate is 1 MS/s.
Calibration Scheme of Impulse‐High‐Voltage Measuring System Traceable to National Standards …
Japan High-voltage Impulse testing Laboratory Liaison has attempted to establish a calibration scheme of impulse-high-voltage measuring system traceable to national standards in cooperation with Japan Electric Meters Inspection Corporation.
A capacitive mismatch calibration method for SAR ADCs based …
The capacitance mismatch problem limits the accuracy improvement of high‐precision SAR ADCs (Successive Approximation Register Analog‐to‐Digital Converters). To address the capacitance array mismatch in SAR ADCs, this paper proposes a novel capacitor calibration scheme based on the Time‐to‐Digital Converter …
IET is the World''s Leading Capacitance Standard Manufacturer With 50+ years of stability data and history, IET Labs manufactures a full line of standard capacitors that will cover most any budget and application. From the world''s most stable to our cost-effective
Adapted Technique for Calibrating Voltage Dividers of AC High …
Firstly, the dividing ratios of two capacitors have been achieved by calibrating each capacitor via a traceable reference standard AC high-voltage divider up to 100 kV. …
Determination of Voltage Dependence in High-Voltage Standard …
Abstract: The voltage coefficient of compressed gas capacitors is a relevant parameter in high-voltage calibrations. These capacitors, used as standards, are …
Calibration of voltage transformers and high-voltage capacitors at …
This paper describes the National Institute of Standards and Technology (NIST) methodology for calibrating high-voltage capacitors and trans- formers. This should …
A capacitive mismatch calibration method for SAR ADCs based …
To address the capacitance array mismatch in SAR ADCs, this paper proposes a novel capacitor calibration scheme based on the Time-to-Digital Converter (TDC). This scheme achieves calibration accuracy as high as …
INFLUENCE OF STANDARD CAPACITORS ON THE QUALITY OF HIGH VOLTAGE …
Keywords: standard capacitor, high-voltage test, metrological reliability . 1. INTRODUCTION The guarantee on continuity of the electric energy supply goes through equipment and installations with ...
A capacitive mismatch calibration method for SAR …
To address the capacitance array mismatch in SAR ADCs, this paper proposes a novel capacitor calibration scheme based on the Time-to-Digital Converter (TDC). This scheme achieves calibration …
INFLUENCE OF STANDARD CAPACITORS ON THE QUALITY OF HIGH VOLTAGE …
Keywords: standard capacitor, high-voltage test, metrological reliability. 1. INTRODUCTION ... which the transformer under calibration is the standard voltage transformer 4820. C 1 is the capacitor under evaluation, C 2 is composed of low voltage composes with 1 ...
Determination of Voltage Dependence in High-Voltage Standard Capacitors …
The voltage coefficient of pressured gas capacitors is a relevant parameter in high-voltage calibrations. These capacitors, used as standards, are calibrated at low voltages, so that it is necessary to know their variation when they are used at high voltages. Although several methods have been proposed to determine that coefficient, …
Digital foreground calibration of capacitor mismatch for SAR ADCs
A foreground digital self-calibration technique that improves capacitor matching of a digital-to-analogue converter (DAC) employed in successive approximation register (SAR) analogue-to-digital conve... On the right-hand side of (), the average value of V IN (n) − V IN (n + 1) is almost negligible because the ramp speed is set to be slow so …
An accurate on-site calibration system for electronic voltage transformers using a standard capacitor …
Capacitors with high energy and power densities are more and more indispensable in the present electronic information age [1]. Consumer electronic devices [2, 3], smart and wearable electronics [4 ...
Calibration of bandgap voltage reference using chopping …
A conceptual operation of the IIR filter in Fig. 2a is shown in Fig. 2b.The IIR filter consists of two sample-and-average circuits, which operate in Ping-Pong mode, and a capacitor C A as a memory element. During the sampling phase, each sampling capacitor C S samples the output voltage of the chopped OTA by using corresponding sampling …
A capacitor mismatch calibration scheme for SAR ADC based on …
A capacitor mismatch calibration scheme for SAR ADC based on genetic algorithm Yujia Huang, Qiao Meng, Fei Li, Xinyan Song, and Jie Wu Institute of RF and OE-ICs, Southeast University, Nanjing, Jiangsu, P. R. China Email: huangyujia12321@foxmail
Compact system for onsite calibration of 1000 kV voltage …
This study describes the development and evaluation of a compact system for onsite calibration of 1000 kV voltage transformers in ultra-high-voltage (UHV) AC …
An accurate on-site calibration system for electronic voltage …
This paper proposes a 110 kV, accurate calibration system based on a standard capacitor by detecting the capacitive current flowing through the standard capacitor without the occurrence of ferroresonance and overvoltage.
A voltage-controlled capacitance offset calibration technique for high …
Abstract: This paper presents a high resolution and wide range offset calibration technique for high resolution comparators. The proposed calibration technique significant reduces the calibration capacitance from conventional 2 n binary-scaled capacitors array to a small voltage-controlled capacitor. ...
An accurate on-site calibration system for electronic voltage …
To overcome this problem, this paper investigates a 110 kV on-site calibration system for EVTs, including a standard channel, a calibrated channel and a …
An 18-bit SAR ADC with Mixed DAC and Capacitive Recombination Calibration …
This paper presents a high-resolution 18-bit SAR ADC with a high 10-bit capacitor DAC and a low 8-bit resistor DAC. The total required number of the unit capacitors is decreased to 512. Foreground digital calibration based on capacitive recombination is introduced to improve linearity. Preamplifiers and output offset …
200 kV-AC RMS with special MeasuringCapacitor and Peak Voltmeter (MCF 600/200, MU 15) • Voltage dependent non-linearity is low due to the use of an advanced capacitor technology CDCT • Low temperature coefficient because of compensation of the
Here, only the fundamental oscillation of the AC quantities is considered. As an example, Fig. 11.1a shows a plate capacitor having a lossy dielectric.When an AC voltage U is applied, the current I flowing through the capacitor has two components: a capacitive component I C leading the voltage U by 90, and a usually much smaller ohmic …
16‐bit 1‐MS/s SAR ADC with foreground digital‐domain calibration …
IET Circuits, Devices & Systems Research Article 16-bit 1-MS/s SAR ADC with foreground digital-domain calibration ISSN 1751-858X Received on 1st October 2017 Revised 30th January 2018 Accepted on 12th February 2018 E-First on 25th April 2018 doi: 10.1049
