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

Capacitor With A Dielectric

Capacitor With A Dielectric

Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...

Circuit Breaker and Fuse Selection

Circuit Breaker and Fuse Selection

A circuit breaker is a device engineered to interrupt fault currents and sometimes reclose automatically. When a fault current is detected, the breaker separates the electrical contacts, which generates an arc. This arc is extinguished by methods such as elongation, cooling, or splitting, depending on the breaker's design. Breakers are categorized based on the voltage they operate at and the medium used for arc extinction, such as air, oil, SF6 gas, or vacuum.
In high-voltage systems, circuit...

Design Example: Automobile Ignition System

Design Example: Automobile Ignition System

The automobile's ignition system plays a vital role by ensuring the timely ignition of the fuel-air mixture in each cylinder. This ignition is facilitated by a spark plug, which is composed of two electrodes separated by an air gap. A spark forms across this air gap when a substantial voltage is generated between the electrodes, leading to the ignition of the fuel.
One can generate a large voltage using a car battery of 12 volts with the help of inductors. Inductors are known for opposing rapid...

Reclosers and Fuses

Reclosers and Fuses

Automatic circuit reclosers enhance the protection of distribution circuits by interrupting and auto-reclosing an AC circuit according to a preset sequence. They effectively manage temporary faults on overhead distribution lines, often caused by tree limbs or wildlife, by briefly disrupting service to improve overall reliability. However, contact with reclosers or energized broken conductors on the ground can pose serious hazards.
A comprehensive protection scheme for radial distribution...

Schottky Barrier Diode

Schottky Barrier Diode

Schottky barrier diodes are specialized semiconductor devices characterized by their unique construction. This construction involves combining a metal layer with a moderately doped n-type semiconductor material. This combination leads to the formation of a Schottky barrier, a pivotal element that defines the diode's operational characteristics. The core functionality of Schottky barrier diodes is their capacity to allow current to flow in only one direction due to their distinctive...

Overcurrent Relays

Overcurrent Relays

Overcurrent relays, crucial for circuit protection, are connected to the secondary current of a current transformer. There are two primary types of overcurrent relays: instantaneous and time-delay.
Instantaneous overcurrent relays activate immediately when the input current exceeds a predetermined value, known as the pickup current, instantly energizing the circuit breaker trip coil. This rapid response is vital for addressing severe faults quickly.
Time-delay overcurrent relays, on the other...

You might also read

Related Articles

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

Sort by

Same author

MicroRNA regulation of islet and enteroendocrine peptides: Physiology and therapeutic implications for type 2 diabetes.

Peptides·2024

Same author

Use of a simple liquid meal test to evaluate insulin sensitivity and beta-cell function in children.

Pediatric obesity·2013

Same author

African genetic admixture is associated with body composition and fat distribution in a cross-sectional study of children.

International journal of obesity (2005)·2010

Same author

Fast-rise light source for detonating sensitive explosives.

Applied optics·2010

Same author

Feto-placental adaptations to maternal obesity in the baboon.

Placenta·2009

Same author

Effect of scalp and facial hair on air displacement plethysmography estimates of percentage of body fat.

Obesity research·2001

Same journal

Compressed multi-scale entropy and its application in mechanical fault diagnosis.

The Review of scientific instruments·2026

Same journal

Bidirectional drive and multi-resolution adjustment across frequency bands in inertial impact piezoelectric motors via multimodal resonant vibration.

The Review of scientific instruments·2026

Same journal

A magnetic field sensor based on flaky Terfenol-D material and dual fiber grating.

The Review of scientific instruments·2026

Same journal

A novel E-field eight-way cavity combiner for high-power S-band applications.

The Review of scientific instruments·2026

Same journal

Constant radius blade spring suspended bench for vibration isolation.

The Review of scientific instruments·2026

Same journal

Qualification of infrared optical fibers and emitters for a spectrometer for in situ planetary exploration: Results from the TRIS (TRansmission and Illumination System) project.

The Review of scientific instruments·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jul 2, 2026

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters

Published on: April 16, 2015

Explosively triggered gas-dielectric crowbar switch.

P B Higgins¹, F H Mathews

¹Sandia Laboratories, Albuquerque, New Mexico 87185.

The Review of Scientific Instruments

|April 1, 1979

Summary

This summary is machine-generated.

Researchers developed a novel gas-insulated gap switch achieving a high standoff-to-trigger voltage ratio. This high-voltage switch, using sulfur hexafluoride (SF6) gas, was triggered at significantly lower voltages than conventional designs.

More Related Videos

Research and Development of High-performance Explosives

Research and Development of High-performance Explosives

Published on: February 20, 2016

Related Experiment Videos

Last Updated: Jul 2, 2026

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters

Published on: April 16, 2015

Research and Development of High-performance Explosives

Research and Development of High-performance Explosives

Published on: February 20, 2016

Area of Science:

Electrical Engineering
High-Voltage Engineering
Plasma Physics

Background:

Traditional high-voltage switches require substantial triggering voltages, limiting their application.
Achieving high standoff voltages in gas-insulated systems is crucial for power transmission and switching.

Purpose of the Study:

To design and evaluate a gas-insulated gap switch with an exceptionally high standoff-to-trigger voltage ratio.
To explore novel triggering mechanisms for efficient high-voltage switching.

Main Methods:

A gas-insulated gap switch was designed to withstand 500 kV using sulfur hexafluoride (SF6) at 1.5 MPa.
The switch was triggered using a shaped charge fired between electrodes.
Comparative tests were conducted on air-insulated and SF6-insulated gaps at lower pressures and voltages.

Main Results:

The 500 kV SF6-insulated switch was successfully triggered at a low voltage of 19.3 kV.
Lower-pressure air and SF6 gaps (50 kV and 150 kV standoff) were triggered at 15.4 kV using a detonator.
The results demonstrate a significantly improved standoff-to-trigger voltage ratio.

Conclusions:

The developed gas-insulated gap switch offers a highly efficient triggering mechanism for high-voltage applications.
The use of shaped charges or detonators provides a viable method for achieving low-voltage triggering in high-voltage SF6 systems.
This technology has potential implications for advanced power systems and pulsed power applications.