Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Galvanometer

Galvanometer

Common devices, including car instrument panels, battery chargers, and inexpensive electrical instruments, measure potential difference (voltage), current, or resistance using a d'Arsonval galvanometer. This electromechanical instrument is also known as a moving coil galvanometer.
The galvanometer consists of two concave-shaped permanent magnets, providing a uniform radial magnetic field in the annular region. In the center, a pivoted coil of fine copper wire is placed in the uniform...

Instrument Transformers

Instrument Transformers

Instrument transformers, comprising voltage transformers (VTs) and current transformers (CTs), play crucial roles in power substations by providing isolated replicas of current or voltage for measurement and protection purposes. Voltage transformers reduce the primary voltage to levels suitable for relay operation and measurement, while current transformers scale down the primary current. The primary winding of a current transformer often consists of a single turn, achieved by threading the...

Accuracy and Precision

Accuracy and Precision

Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value. Highly accurate...

Instrument Calibration

Instrument Calibration

Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...

Controlled-Current Coulometry: Overview

Controlled-Current Coulometry: Overview

Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...

Ammeter

Ammeter

An ammeter is a current measuring instrument. In the circuit, it is represented by the symbol A. The ammeter is placed in series with the device or component to measure the current. A series connection is used because objects in series have the same current passing through them. If a circuit has multiple resistors and the current needs to be measured in each resistor, the number of ammeters required depends on whether the circuit is in series or parallel.
When an ammeter is used to measure the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Genomic mutation profile and metabolic alterations in diffuse large B-cell lymphoma with abdominal bulky mass.

Annals of hematology·2025

Same author

Branching-Induced Intermolecular Repulsion Effects Drive Stable and Sustainable Flow Batteries on Condensed Nitroxyl Radicals.

Angewandte Chemie (International ed. in English)·2025

Same author

Correction: Endolymphatic hydrops impairs inner ear uptake and distribution of intratympanically injected gadolinium mixed with dexamethasone in patients with Meniere's disease.

European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·2025

Same author

Tocilizumab Monotherapy or Combined With Methotrexate for Rheumatoid Arthritis: A Randomized Clinical Trial.

JAMA network open·2025

Same author

Prevalence of and risk factors for important comorbidities of systemic lupus erythematosus using data from a multicenter Chinese cohort registry: A cross-sectional study.

Clinical rheumatology·2025

Same author

Overexpression of the <i>Glycyrrhiza uralensis</i> Phenylalanine Ammonia-Lyase Gene <i>GuPAL1</i> Promotes Flavonoid Accumulation in <i>Arabidopsis thaliana</i>.

International journal of molecular sciences·2025

Search research articles

Related Experiment Video

Updated: Sep 29, 2025

Measurement of Bioelectric Current with a Vibrating Probe

Measurement of Bioelectric Current with a Vibrating Probe

Published on: January 4, 2011

A High Accuracy AC+DC Current Transducer for Calibration.

Xia Xiao¹, Hongtian Song^1,2, Hongbin Li¹

¹School of Electrical and Electronic Engineering, Huazhong University of Science & Technology, Wuhan 430070, China.

Sensors (Basel, Switzerland)

|March 26, 2022

Summary

This summary is machine-generated.

A novel high-accuracy measurement method using a modified fluxgate sensor enables simultaneous AC and DC current measurement. This innovation provides a new calibration standard for electrical measurement devices, improving accuracy and simplifying design.

Keywords:

AC+DC current transducer calibration self-oscillating fluxgate standard CT (current transformer)zero-flux

More Related Videos

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T

Published on: January 16, 2021

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

Published on: June 27, 2025

Related Experiment Videos

Last Updated: Sep 29, 2025

Measurement of Bioelectric Current with a Vibrating Probe

Measurement of Bioelectric Current with a Vibrating Probe

Published on: January 4, 2011

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T

Published on: January 16, 2021

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

Published on: June 27, 2025

Area of Science:

Electrical Engineering
Metrology
Sensor Technology

Background:

Existing calibration standards for AC+DC measurement devices lack high accuracy.
Simultaneous measurement of Alternating Current (AC) and Direct Current (DC) presents calibration challenges.

Purpose of the Study:

To propose a high-accuracy measurement method for simultaneous AC and DC current.
To develop a calibration standard for AC, DC, and AC+DC measurement devices.

Main Methods:

A zero-flux self-oscillating fluxgate sensor is modified with an additional iron core and windings.
The modified fluxgate operates in a zero-flux state, utilizing feedback from AC+DC magnetic potential.
An AC+DC transducer prototype was designed and developed with optimized circuit parameters.

Main Results:

The developed prototype successfully measures AC and DC currents simultaneously.
Measurement accuracy achieved class 0.05 level within the nominal current range (AC: 0-500 A, DC: 0-300 A).
The proposed transducer offers a simpler design with fewer cores compared to existing devices of similar accuracy.

Conclusions:

The novel fluxgate-based transducer provides a high-accuracy calibration standard for AC, DC, and simultaneous AC+DC measurements.
This method addresses the limitations of current standards, offering improved accuracy and a simplified transducer design.
The developed transducer is suitable for calibrating a wide range of electrical measurement devices.