Selection of LC Filters to Ensure HEMP Protection of Electronic Equipment
According to military standards, passive electromagnetic LC filters of HEMP are recommended for use in all kinds of special-purpose electronic equipment. Experience gained by military specialists is...
View ArticleFunctional Safety, Risk Management, EMC and EMI
What is Functional Safety? The safety of products, systems and installations can be split into two parts: i) ‘Basic’ safety: electric shock, excessive temperatures, excessive radiation, fire,...
View ArticleGood SI, PI and EMC require this most of all…
Good SI, PI and EMC require a proper, grown-up understanding of electricity… Instead of what circuit designers are taught! As electronic designers, we were taught the children’s version of electricity...
View Article5 Steps to Selecting the Right RF Power Amplifier
Introduction You need an RF power amplifier. You have measured the power of your signal and it is not enough. You may even have decided on a power level in Watts that you think will meet your needs....
View ArticleEMI Filtering 101: Understanding the Basics
Introduction To start at the very beginning, what is an electrical filter? An electrical filter can be passive, active, analog, or digital. It is a device usually composed of discrete components which...
View ArticleEMC Focus: Power Supplies
Electromagnetic Interference (EMI) is always a potential problem with switched-mode power supplies, both AC-DC and DC-DC converters. Modern designs can perform well for emissions and immunity but...
View ArticleSCHURTER’s Comprehensive Fuse Selection Guide Helps Engineers Find the Right...
Santa Rosa, California, February 28th, 2023 – Protecting circuits from overcurrent is essential to avoid equipment damage. Selecting the right fuse saves on costs of repairs and replacements, enhances...
View ArticleEMC DESIGN IN POWER ELECTRONICS PART 1: REGULATORS
INTRODUCTION Modern electronics demand low EMI and EMC conformance, both of which are related to component selection and physical layout in the power supply section of a device. Many more designs are...
View ArticleEMC DESIGN IN POWER ELECTRONICS PART 2: NOISE COUPLING MECHANISMS
In the previous article of this series, we looked at some of the major noise considerations in different power regulator topologies. Noise from these sources eventually makes its way to other...
View ArticleThings Not On the Schematic: How the Parasitic Element Affect Results
The engineer had found the use of a capacitor on a specific trace would solve a radiated emissions issue. However, placement on the connector where we put the capacitor during engineering work was not...
View ArticleThe Internet of Things, Wireless and Security
Summary This article gives an overview of international and domestic efforts to protect our connected world. These efforts will be ongoing in perpetuity as the world becomes more complex, riskier, and...
View ArticleHOW TO PREPARE YOUR PRODUCT AND YOURSELF FOR EMC TESTING
INTRODUCTION Your product has EMC requirements. You have to test it to demonstrate compliance with those requirements. How do you prepare for the test? How do you prepare your product for the test?...
View ArticleA Simple Guide to Antenna Selection
INTRODUCTION Selecting an antenna for testing can sometimes be straightforward but often requires some specific consideration. One aspect in antenna selection is knowing the intended test frequencies...
View ArticleTelecommunication Testing On Relevant RF Components
Introduction The telecom industry has undergone rapid development in the past several decades. Digital communications methods have advanced, requiring increased bandwidth and frequency coverage. This...
View ArticleNew! UHS: Compact and Powerful SMD Fuse for High Current SELV Applications
Santa Rosa, California – SCHURTER announces the launch of its new UHS, a compact fast-acting SMT fuse designed to safely interrupt high-energy overcurrent in the SELV range. The new UHS is available in...
View ArticleA SHORT HISTORY OF A FEW ITEM ISSUES
1977 My first issue of ITEM (Interference Technology Engineers Master) is from 1977. Was this the first issue of ITEM? No, it was not. However, it was my first issue. Why? I got my start in EMC in 1976...
View ArticlePLACING A METAL PLATE IN FRONT OF A EUT MAY NOT BE ENOUGH TO SOLVE RADIATED...
EXAMPLE OF AN EUT WHICH HAS FAILED RADIATED SUSCEPTIBILITY As described in reference 1, the EUT was exposed to a radiated immunity test at a level of 20V/m. The side which contained a vertical metal...
View ArticleSTOP USING THE CRITICAL LENGTH RULE IN HIGH SPEED PCB DESIGN
The PCB world is in flux and an inrush of new designers is appearing on the horizon. Unfortunately, marketing material from manufacturers and CAD companies continues to spread outdated design...
View ArticleKNEE FREQUENCY IS A MISLEADING BANDWIDTH METRIC
INTRODUCTION There is a transmission line critical length rule that is often used in high-speed PCB design by novice engineers. This rule should not be used and is not appropriate for high-speed PCBs....
View ArticleTHE VITAL ROLE OF SIMULATION FOR VIRTUAL EMI AND EMC TEST ENVIRONMENTS
Before deploying microwave and millimeter-wave devices and systems within 5G, the Internet of Things (IoT), and high-speed wireless communication, it is essential to predict their performance. This...
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