Basic Power Supply Filter Design

Overview of filters: definitions, frequency and loss classifications, Butterworth/Chebyshev/Bessel designs, and key parameters like insertion loss.

The Story Behind the Discovery of Electromagnetic Waves

Chronicles Hertz's 1888 detection of electromagnetic waves and Marconi's development of wireless telegraphy, from laboratory measurements and demonstrations to transatlantic radio.

Lightning Surge Test System Components and Operation

Overview of surge test system design per GB/T 17626.5-2019, covering combined wave generator operation (1.2/50us-8/20us), calibration and standardized test procedures.

Ripple and Noise in Switching Power Supplies

Technical guide to ripple and noise in switching power supplies: causes, oscilloscope measurement methods and standards, test fixtures, and mitigation techniques.

EMC Testing Methods for Energy Storage Systems

EMC testing requirements for energy storage systems, summarizing IEC 61000 radiated and conducted immunity tests (IEC 61000?4?3, -4?6, -4?16).

What is EMI Shielding Film and How It Works

Overview of EMI shielding film market, applications and industry chain: role in FPCs, drivers including FPC growth, China capacity shift, and 5G deployment.

Crosstalk in EMI: Description

Technical overview of PCB crosstalk: capacitive and inductive coupling, forward/backward effects, impact on signals, and PCB layout recommendations to reduce EMI.

Calibration Method for Near-field Probes in EMC Diagnosis

Paired-probe calibration of near-field probes for EMC using a spectrum analyzer/tracking generator to derive frequency response and coupling for emission and immunity testing.

Choosing Capacitors for ESD Protection in EMC Testing

ESD ±4kV pin-discharge mitigation using a 10nF capacitor at the interface, analyzing insertion loss, self-resonant frequency and EMC impact.

EMC Design for Power Modules

Practical guidance to improve EMC in power module design: surge protection strategies, PCB/layout considerations, and conducted-noise filtering for reliable supplies.

EMC Design Considerations for HDMI Interfaces

Technical overview of HDMI EMC design, detailing interface circuitry, component placement, and PCB layout guidelines to maintain signal integrity and meet EMC compliance.

Overview of Automotive EMI/EMC Standard ISO 7637-2

ISO 7637 overview of automotive transient pulse classification and functional status, covering P1–P5 characteristics, load dump effects and test severity.

Tips to Prevent EMI in High-Speed Signals

Practical techniques to reduce EMI in high-speed signal designs: ground planning, shielding, ground separation, PCB layout, return-loop control, edge-rate and filtering guidance.

How AC Motor Electromagnetic Interference Occurs and Its Effects

Explains how electromagnetic interference from AC motors is generated, its effects on data and control systems, and technical mitigation: filtering, grounding, and shielding.

ESD Design for Metal-Enclosed Systems

ESD control for grounded metal enclosures: analysis of contact vs air discharge, coupling paths, and mitigations via grounding, enclosure design, and PCB fixes.

How EMC Signals Escape Shielded Enclosures

Practical EMC guidance: prioritize PCB layer stackup and return current routing, identify signal sources and how they escape shielded enclosures via cables, gaps, or terminations.

EMC Design: Practical ESD Protection Techniques

Technical overview of ESD protection methods - TVS diodes, MLCC capacitors, shielding, PCB stackup, anti-static perimeter and grounding for ISO 10605 ESD mitigation.

Grounding and Signal Ground in EMI Design

Guide to grounding in electromagnetic interference design with emphasis on protective ground and signal ground, plus layout, filtering, shielding and testing for HF systems

Common EMI Sources and Propagation Paths

Overview of electromagnetic interference (EMI) causes, propagation paths and engineering mitigation—shielding, filters, grounding and EMC testing for device design.

EMI Filter Selection and Shielding Best Practices

Guidelines for selecting and applying EMI filters and shielding materials, covering frequency range, filter types, PCB layout, testing, and grounding best practices.