Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Equivalent Capacitance01:19

Equivalent Capacitance

1.5K
Multiple capacitors can be connected in a circuit in series or parallel configuration. When the capacitor combination is connected to a battery, the potential drop across each capacitor and the magnitude of charge stored in the individual capacitor depends on the type of the connection. The capacitor combination is replaced by a single equivalent capacitor that stores the same amount of charge as the combination for a given potential difference.
The following strategies are adopted to calculate...
1.5K
Potentiometer01:30

Potentiometer

886
Voltage and current measurements using a standard voltmeter and ammeter alter the circuit being measured either by drawing or resisting the current flow, which introduces uncertainties in the measurements. Null measurements balance the voltages so that no current flows through the measuring device and, therefore, no alterations occur in the measured circuit.
Suppose the emf of a battery needs to be measured. If the battery is directly connected to a standard voltmeter, the measured quantity is...
886
Capacitors and Capacitance01:18

Capacitors and Capacitance

7.7K
A device consisting of two electrical conductors that are separated by a distance and used to store electrical charges is called a capacitor. The space between the conductors is either a vacuum or an insulating material, called a dielectric. Capacitors have many applications, ranging from filtering static from radio reception to energy storage in heart defibrillators.
When the conductors are two identical parallel plates, it is called a parallel plate capacitor. When battery terminals are...
7.7K
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

4.8K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
4.8K
Capacitance: Single-Phase And Three-Phase Line01:25

Capacitance: Single-Phase And Three-Phase Line

201
In electrical power systems, understanding the capacitance of transmission lines is fundamental for efficient operation.
Single-Phase Lines
Consider a single-phase, two-wire transmission line with equal phase spacing energized by a voltage source. One conductor carries a uniform positive charge, while the other carries an equal negative charge. The capacitance C of the line can be derived from the voltage V between the conductors. For a one-meter section of the line, the capacitance is given...
201
Calculation of Self-inductance01:29

Calculation of Self-inductance

410
The self-inductance of a circuit, often simply called the inductance, is a purely geometric factor that depends only on the circuit component's structure. More specifically, it depends on the shape and size of the component that lets the flux pass through it, thus inducing an electric field that opposes any current passing through it.
Since the effect of the induced electric field and the back EMF generated depends on the rate of change of current and the self-inductance, the inductance...
410

You might also read

Related Articles

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

Sort by
Same author

IAPEz retrotransposons regulate the first lineage segregation in mouse pre-implantation development.

Nucleic acids research·2026
Same author

Enhanced rubber yield and its stability during the rainy season: insights from five-year yield monitoring in Southwestern China.

Frontiers in plant science·2026
Same author

Single-Cell and Multi-Omics-Based Characterization of Gastric Cancer Identifies TPP1 as a Potential Target for Gastric Cancer Progression and Treatment.

Oncology research·2026
Same author

Development and Validation of a Machine Learning Model to Predict the Risk of Medical Decision-Making Delay in Acute Myocardial Infarction Patients From Multicenter Tertiary Hospitals in China.

International journal of general medicine·2026
Same author

Spatiotemporal Dynamics and Key Drivers of Brown Carbon Emissions from Biomass Burning in China: A Historical to Future Perspective (1980-2035).

Environmental science & technology·2026
Same author

Molecular drivers of fusion plasmid: mechanistic insights and evolutionary implications.

The Journal of antimicrobial chemotherapy·2025

Related Experiment Video

Updated: Aug 1, 2025

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
05:57

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

2.3K

Self-Calibration Sensor for Contactless Voltage Measurement Based on Dynamic Capacitance.

Chunguang Suo1, Rujin Huang1, Guoqiong Zhou1

  • 1College of Science, Kunming University of Science and Technology, Kunming 650504, China.

Sensors (Basel, Switzerland)
|April 28, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a novel self-calibration method for noncontact voltage measurement using dynamic capacitance. The technique enhances accuracy and reduces errors caused by environmental factors and sensor variations.

Keywords:
dynamic capacitancenoncontactself-calibrationvoltage measurementvoltage sensor

More Related Videos

Scanning-probe Single-electron Capacitance Spectroscopy
10:53

Scanning-probe Single-electron Capacitance Spectroscopy

Published on: July 30, 2013

13.1K
The Calibration and Use of Capacitance Sensors to Monitor Stem Water Content in Trees
08:31

The Calibration and Use of Capacitance Sensors to Monitor Stem Water Content in Trees

Published on: December 27, 2017

12.6K

Related Experiment Videos

Last Updated: Aug 1, 2025

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
05:57

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

2.3K
Scanning-probe Single-electron Capacitance Spectroscopy
10:53

Scanning-probe Single-electron Capacitance Spectroscopy

Published on: July 30, 2013

13.1K
The Calibration and Use of Capacitance Sensors to Monitor Stem Water Content in Trees
08:31

The Calibration and Use of Capacitance Sensors to Monitor Stem Water Content in Trees

Published on: December 27, 2017

12.6K

Area of Science:

  • Electrical Engineering
  • Measurement Science

Background:

  • Noncontact voltage measurement offers safety and ease of use but suffers from sensor gain variations due to environmental factors and interference.
  • Practical challenges include sensitivity to wire diameter, insulation, positioning, and external electric fields.

Purpose of the Study:

  • To propose and validate a self-calibration method for noncontact voltage measurement using dynamic capacitance.
  • To improve the accuracy and reliability of noncontact voltage measurements in diverse conditions.

Main Methods:

  • Developed a self-calibration approach based on dynamic capacitance, enabling sensor gain adjustment using the unknown line voltage.
  • Optimized sensor models and parameters through error analysis and simulations.
  • Designed and built a sensor prototype with a shielded remote dynamic capacitance control unit.

Main Results:

  • Achieved a maximum relative error of 0.89% for voltage amplitude and 1.57% for phase.
  • Demonstrated robust anti-interference capabilities with an error offset of only 0.25% in the presence of interference.
  • Confirmed excellent line adaptability, with a maximum relative error of 1.01% across different line types.

Conclusions:

  • The proposed dynamic capacitance-based self-calibration method significantly enhances the accuracy and reliability of noncontact voltage measurements.
  • The developed system effectively mitigates errors from environmental variations and external interference.
  • This method offers a practical solution for precise noncontact voltage monitoring in various electrical applications.