November 2024

Electromagnetic interference (EMI) and excessive heat pose considerable risk to the proper operation of electronic systems within commercial and defense drone technology. By implementing solutions such as EMI shielding products and thermal interface materials, engineers and product designers can mitigate risks and meet regulatory requirements needed for high reliability and performance.

Mexico’s regulatory compliance process for electrical safety requires constant attention because of the number of safety standards potentially applicable, exemptions based on use, limited validity periods, provision of samples for local testing, comprehensive labeling and warranty requirements, and the need to coordinate the efforts of test labs, Certification Bodies, customs house brokers, and the importer/certificate holder. By better understanding the key players and documents that make up the regulatory system, manufacturers can more easily and successfully navigate compliance.

Circuit spacing is a key element in minimizing electrical shock and fire risks, which is critical for safe product development. This publication provides simplified guidelines to help understand, navigate, interpret, and apply circuit spacings, contributing to a successful safety and certification experience.

Foreign manufacturers sometimes intentionally or unintentionally cut corners on safety and quality because they are less likely to be held liable in the U.S. for problems created by their products. U.S. manufacturers who buy from foreign companies must alter their relationships with such manufacturers to account for this possibility and enhance the safety of their products to protect themselves better if problems do occur.

This column continues a series on transmission line circuit models, exploring two additional models. It derives equations for voltage characteristics and standing waves, building upon concepts introduced in the previous installment.

This column explores the application of machine learning techniques in ESD compact modeling for semiconductor devices. It compares traditional methods with a new machine learning approach, highlighting improved efficiency and accuracy in predicting ESD protection performance.

This Column discusses a technique for troubleshooting radiated immunity failures in electronic devices using near-field probes. It presents a case study, explains the method's application, and addresses its limitations and safety considerations for bench-level testing.

The month's Banana Skins covers various electromagnetic interference issues in different contexts. It discusses problems with video projectors affecting audio induction loops, switch-mode power supply emissions varying with voltage, hybrid vehicle EM emissions, computer interference with amateur radio, electrostatic discharge in fluid lines, and communication equipment in ambulances causing radio interference.