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Power Factor Correction: Reactive Power Compensation Methods

Power Factor Correction: Reactive Power Compensation Methods

This article introduces power factor correction, why it is needed, and how to design it for the system.


Motor Starters Part 4: Selecting and Sizing Star-Delta Parts

Motor Starters Part 4: Selecting and Sizing Star-Delta Parts

This article makes the selection and sizing of the star-delta motor starter parts very easy. Here you will learn how to select and size the fuse,…


Three-Phase Induction Motor Operation Explained

Three-Phase Induction Motor Operation Explained

This article describes the operating principles and equivalent circuits of a three-phase induction motor.


Motor Starters Part 2: Selecting and Sizing DOL Parts

Motor Starters Part 2: Selecting and Sizing DOL Parts

This article instructs readers on how to size and select Direct On-Line motor starter parts like circuit breakers, contactors, and thermal overload…


Intro to Magnetic Fields Around a Conductor and a Coil

Intro to Magnetic Fields Around a Conductor and a Coil

In this article, learn about the magnetic fields that occur around current-carrying conductors and various shaped coils and how to relate the…


Introduction to Energy Meter Calibration

Introduction to Energy Meter Calibration

This article will guide engineers and technicians through procedures, precautions, and the importance of carrying out electrical energy meter…


Understanding Attenuation in Signal Transmission

Understanding Attenuation in Signal Transmission

Attenuation is the loss of signal strength of an electrical or networking system while in transmission. In this article, you will learn how to…


Introduction to Inductor Filter Types and Applications

Introduction to Inductor Filter Types and Applications

A frequency filter is a circuit that passes certain frequencies and reduces signal levels at other frequencies. Learn about various types of…


The Evolution of Integrated Current Sensors Takes a Digital Path

The Evolution of Integrated Current Sensors Takes a Digital Path

So far, the evolution of integrated current sensors (ICSs) has been slow and gradual. Current measurement technology has been developed…


Technical Articles Oct 04, 2022 by LEM
What Are Magnetically Coupled Inductors?

What Are Magnetically Coupled Inductors?

This article discusses magnetically coupled inductors, more commonly known as transformers.


Designing Electronics to Pass the EMC Test Part 4

Designing Electronics to Pass the EMC Test Part 4

Simulating and evaluating the conductive emission using LTSpice.


Measuring Temperature Swing with Optical Fibers during Power Cycling of Power Components

Measuring Temperature Swing with Optical Fibers during Power Cycling of Power Components

Power semiconductor components play an important role in the power electronics field and their reliability and lifetime have been attracting more…


Gallium Nitride and Silicon Carbide: Compound Materials for Radiation-Hardened Applications

Gallium Nitride and Silicon Carbide: Compound Materials for Radiation-Hardened Applications

For a long time, silicon-based devices have represented the baseline standard in the semiconductor landscape. Starting from 2007, due to Moore’s…


Pulsed Inductance Measurement on Magnetic Components from 0.1A to 10kA

Pulsed Inductance Measurement on Magnetic Components from 0.1A to 10kA

Pulse measurement using the Power Choke Tester DPG10/20 series with IGBT power stages has prevailed over other measurement methods for inductance…


Pulsed Inductance Measurement on Magnetic Components

Pulsed Inductance Measurement on Magnetic Components

For inductance measurement on inductive power components, the innovative pulse measurement method of the Power Choke Tester DPG10/20 series, which…


Direct Current Generator Components

Direct Current Generator Components

Learn about direct current generator components such as field windings, armature, commutators, brushes, and frames.


Measuring Conduction Voltage of Semiconductors in Operation for Real Time Temperature Evaluation

Measuring Conduction Voltage of Semiconductors in Operation for Real Time Temperature Evaluation

Junction temperature is directly related to system reliability. With TO packaged transistors, it was possible to add a thermocouple to the case and…


Understanding the Different Properties of Diamagnetic, Paramagnetic, and Ferromagnetic Materials

Understanding the Different Properties of Diamagnetic, Paramagnetic, and Ferromagnetic Materials

This article shares how magnetic molecular theory plays a role in electricity and power generation.


Combining Waveforms in a Power System to Cancel Harmonic Components

Combining Waveforms in a Power System to Cancel Harmonic Components

Harmonics can cause transformers to fail, motors to burn out, circuit breakers to trip (nuisance tripping), and neutral conductors and other parts…


An Overview of Software Used in the Modeling and Simulation of Power Electronic Components

An Overview of Software Used in the Modeling and Simulation of Power Electronic Components

This article will provide an example of component modeling and share renowned software currently used in modeling.