What's New

Officials from the Enforcement Bureau of the U.S. Federal Communications Commission (FCC) recently convened...

The National Association for Amateur Radio (ARRL) has announced the release of an updated version of its classic guide to amateur radio technology and practice.

This month's EMC Bench Notes reviews three affordable pre-compliance measurement software options that can simplify and automate the process of conducting in-house radiated emissions testing, saving time and costs compared to manual methods.

The FDA has classified a radiofrequency-based electric toothbrush as a medical device, establishing regulations to ensure the safety and effectiveness of this emerging dental technology.

The FCC will review broadband providers' customer support practices, focusing on issues like cancellations, renewals, live representative access, installations, outages, and accessibility for individuals with disabilities.

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.