October 2025

This month's issue tackles advanced battery testing through EIS analysis, confronts dynamic automotive EMC challenges in electric vehicles, and reveals how to build DIY ESD targets for under $100. Our monthly columns dive into electromagnetic shielding material selection across frequencies and unlock FFT-based time domain scanning for superior EMI testing accuracy.

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Testing

From Nyquist to Now: The Evolving Role of Electrochemical Impedance Spectroscopy (EIS)

Electrochemical Impedance Spectroscopy (EIS) offers powerful insights into battery performance without destructive testing. By applying AC current across frequencies and analyzing voltage responses through Nyquist plots, EIS reveals internal processes like charge transfer and diffusion, enabling better battery health monitoring and aging prediction.

Testing

Automotive EMC Testing Under Dynamic Driving Conditions

Electric vehicles introduce complex EMC challenges as high-switching inverters and E-drives create electromagnetic interference affecting safety-critical ADAS systems. Traditional static testing at constant speeds is insufficient—dynamic EMC testing under realistic driving conditions is essential to properly characterize emissions and ensure compliance.

Testing

Build Your Own ESD Target

Why spend $1500+ on commercial ESD targets when you can build your own for under $100? This EMC lab's clever DIY solution uses high-voltage resistors and SMD components to create an IEC 61000-4-2 compliant target that rivals expensive commercial alternatives.

EMC Concepts Explained

Shielding to Prevent Radiation, Part 4B

Discover why copper shields outperform steel at low frequencies but steel dominates at high frequencies. This practical guide presents simplified formulas for calculating electromagnetic shielding effectiveness, revealing the surprising crossover point at 4200 Hz where material performance flips.

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Hot Topics in ESD

In-situ ESD Current Sensing in a Pick-and-Place Machine

Real-world ESD discharge currents during semiconductor assembly differ dramatically from standard test predictions. A new Discharge Current Sensor reveals that actual currents are lower but faster than expected, challenging current protection designs for Multi-Chip Modules and Systems in Package.

October 2025

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What's New

FDA Seeks to Address Device Supply Chain Vulnerabilities Impacting Children

FCC Modifies Handset Unlocking Rules for Verizon

Bridging Theory and Practice: How to Implement Compliance Standards in Product Design

Davos Conference Explores Quantum Security Threats and Future of Global Digital Trust

The Backbone of EMC Testing: RF Amplifiers and Their Role in Ensuring Compliance