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

Line Protection with Impedance Relays

Line Protection with Impedance Relays

Coordinating time-delay overcurrent relays in complex radial systems and directional overcurrent relays in multi-source transmission loops can be challenging. Impedance relays address these issues by responding to the voltage-to-current ratio, specifically measuring the apparent impedance of a line. These relays become more sensitive during faults as current increases and voltage decreases, thereby reducing the apparent impedance.
Under normal conditions, low load currents keep the measured...

Differential Relays

Differential Relays

Differential relays are used to protect generators, buses, and transformers by comparing electrical quantities at different points. When a fault occurs, the difference in current between the two points triggers the relay to operate, opening the circuit breaker. Under normal conditions, the current entering (i1) and leaving (i2) a generator are equal. When a fault occurs, however, these currents become unequal, and the difference current flows in the relay operating coil, causing the relay to...

Potentiometer

Potentiometer

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...

Self-Locking Screw

Self-Locking Screw

A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.

Directional Relays

Directional Relays

Directional relays, essential for managing unidirectional fault currents, enhance the safety and efficiency of power systems. On power lines equipped with directional relays, faults downstream (to the right) of the current transformer typically cause the fault current to lag the bus voltage by approximately 90 degrees, known as the forward direction. In contrast, upstream (left-side) faults may result in the fault current leading the bus voltage by nearly 90 degrees, termed the reverse...

Voltage Dividers

Voltage Dividers

In electrical circuits, resistors can be connected in series, sequentially linked one after the other. In a series configuration, the same current flows through each resistor. Ohm's law is a fundamental principle to understand the behavior of resistors in series. It expresses the voltage across these resistors in terms of the current and resistance.
Kirchhoff's voltage law implies that the sum of the voltages across the resistors in series equals the source voltage. This means that the current...

You might also read

Related Articles

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

Sort by

Same author

Magnetic Interactions in Ferrite Bead-Enhanced Wiegand Wires Evaluated by First-Order Reversal Curves.

Materials (Basel, Switzerland)·2025

Same author

Effects of Néel and Brownian relaxations on dynamic magnetization empirically characterized in single-core and multicore structures of magnetic nanoparticles.

Nanoscale·2025

Same author

Detection of Sub-pT Field of Magnetic Responses in Metals and Magnetic Materials by Highly Sensitive Magnetoresistive Sensors.

Sensors (Basel, Switzerland)·2025

Same author

Characterization of Microscopic Structures in Living Tumor by In Vivo Measurement of Magnetic Relaxation Time Distribution of Intratumor Magnetic Nanoparticles.

Advanced materials (Deerfield Beach, Fla.)·2024

Same author

Cost-effectiveness analysis of soft bandage and immediate discharge versus rigid immobilization in children with distal radius torus fractures.

The bone & joint journal·2024

Same author

Infographic: Cost-eﬀectiveness analysis of soft bandage and immediate discharge versus rigid immobilization in children with distal radius torus fractures.

The bone & joint journal·2024

Search research articles

Related Experiment Video

Updated: Dec 15, 2025

Flying Insect Detection and Classification with Inexpensive Sensors

Flying Insect Detection and Classification with Inexpensive Sensors

Published on: October 15, 2014

Single-Bit, Self-Powered Digital Counter Using a Wiegand Sensor for Rotary Applications.

Janki Chotai¹, Manish Thakker², Yasushi Takemura³

¹Instrumentation and Control Engineering Department, Gujarat Technological University, Ahmedabad 382424, Gujarat, India.

Sensors (Basel, Switzerland)

|July 15, 2020

Summary

This study demonstrates energy harvesting from rotary motion using Wiegand sensors. A self-powered digital counter was successfully operated using harvested energy, enabling single rotations to be measured without external power.

Keywords:

Internet of Things (IoT)Wiegand sensor energy harvesting rotary applications wireless sensor network (WSN)

More Related Videos

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

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

Published on: March 13, 2017

Related Experiment Videos

Last Updated: Dec 15, 2025

Flying Insect Detection and Classification with Inexpensive Sensors

Flying Insect Detection and Classification with Inexpensive Sensors

Published on: October 15, 2014

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

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

Published on: March 13, 2017

Area of Science:

Energy Harvesting
Sensor Technology
Rotary Motion Systems

Background:

Self-sustained sensors are crucial for the Internet of Things (IoT) and wireless sensor networks (WSN).
Wiegand sensors generate voltage pulses from magnetic field reversals, irrespective of the reversal speed.
Efficient energy harvesting from low-frequency mechanical motion is a key challenge.

Discussion:

A linear relationship was established between rotational motion, magnetic field reversal, and Wiegand sensor output frequency.
Analytical derivation of maximum energy per pulse and its dependencies was performed.
The Wiegand sensor demonstrated a maximum energy output of 130 nJ per pulse.

Key Insights:

A novel single-bit, self-powered digital counter was developed.
The digital counter operated effectively with only 38 nJ of energy.
Single rotations were accurately measured without external power sources.

Outlook:

Potential for self-powered IoT devices and WSN nodes.
Further optimization of Wiegand sensor energy harvesting for low-power electronics.
Advancements in autonomous sensing systems through efficient energy conversion.