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Mutual Inductance

Mutual Inductance

Inductance is the property of a device that tells us how effectively it induces an emf in another device. In other words, it is a physical quantity that expresses the effectiveness of a given device.
When two circuits carrying time-varying currents are close to one another, the magnetic flux through each circuit varies because of the changing current in the other circuit. Consequently, an emf is induced in each circuit by the changing current in the other. Therefore, this type of emf is called...

Bridge rectifier

Bridge rectifier

The bridge rectifier is essential in electronics for efficiently converting alternating current (AC) to direct current (DC). Comprised of four diodes configured in a bridge layout, this rectifier effectively processes both the positive and negative halves of the AC waveform, making it superior to half-wave and full-wave center-tapped rectifiers in terms of voltage regulation and output stability.
Operationally, the bridge rectifier allows current flow through two of its diodes during each...

Self-Inductance

Self-Inductance

Mutual inductance arises when a current in one circuit produces a changing magnetic field that induces an emf in another circuit. On the other hand, self-inductance arises when the current passing through the circuit changes, creating a changing magnetic flux, resulting in inductance in the same circuit.
Consider a circuit connected to an AC source. As the current varies with time, the magnetic flux through the circuit correspondingly changes. Faraday's law tells us that an emf would therefore...

MOSFET Amplifiers

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Calculation of Self-inductance

Calculation of Self-inductance

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...

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Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

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Op-amp mutual inductance bridge.

J M Dundon¹, M E Kretschmar

¹Department of Physics, University of Nevada-Las Vegas, Las Vegas, NV 89154, USA.

The Review of Scientific Instruments

|March 1, 1978

Summary

This summary is machine-generated.

This study details a novel mutual inductance bridge built using operational amplifiers. This electronic circuit design offers a new approach for precise inductance measurements.

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Area of Science:

Electrical Engineering
Instrumentation and Measurement

Background:

Mutual inductance bridges are crucial for precise inductance measurements.
Traditional bridge designs can be complex and costly.
Operational amplifiers offer versatile solutions for analog circuit design.

Purpose of the Study:

To describe the construction and operation of a mutual inductance bridge.
To demonstrate the utility of operational amplifiers in bridge circuit design.
To present a potentially simpler and more accessible method for inductance measurement.

Main Methods:

The bridge was constructed using readily available operational amplifier components.
Circuit analysis was performed to understand the bridge's operational principles.
Experimental validation was conducted to assess the bridge's performance.

Main Results:

A functional mutual inductance bridge was successfully constructed.
The operational amplifier-based design proved effective for inductance measurement.
The performance characteristics of the bridge were evaluated.

Conclusions:

Operational amplifiers can be effectively utilized to build mutual inductance bridges.
This design offers a viable alternative for inductance measurement applications.
Further research could explore optimization and advanced features.