TDK Corporation offers a new series of current-compensated EPSOC double-ring core chokes for the suppression of common-mode interferences in switch-mode power supplies, converters, and domestic appliances.
Element Materials Technology has expanded its product qualification testing (PQT) capabilities at its testing sites in Hull and Hitchin (UK) to address the broader range of wireless technology requirements.
The formation of branching patterns is commonly associated with electrical discharges. Lightning and electrostatic discharges from a Van de Graaff generator are transient luminous branching patterns, and sometimes the passing of an electrical current leaves residual physical patterns. Examples of how such patterns are formed are presented.
This is the fourth article in a series of articles devoted to the design, test, and EMC emissions evaluation of 1- and 2-layer PCBs that contain AC/DC and/or DC/DC converters, and employ different ground techniques.
Secure facility designs often comingle ICS/ICD-705 and NSA 94-106 design requirements, creating project confusion with significant design and cost implications. This article focuses on bringing some clarity to the differences between ICS/ICD-705 design guidance and NSA 94-106 performance requirements. The related secure facility design and construction process is also reviewed.
This article presents the EMC design techniques for electric vehicle powertrain modules. High voltage EMC regulations for powertrain modules are reviewed first to help understand associated design challenges. The design techniques are then demonstrated in detail to help engineers design a module that will pass the EMC requirements in the test chamber.
The electronic industry has embraced simulation to address several complex design challenges, but reliability is still mostly dealt with best design practices and tested with prototypes. In this article, we present how modeling and simulation approaches can help designers perform virtual prototyping and uncover reliability issues especially EOS/ESD before going for physical prototypes.
In Part 1 of this two-part article, we’ll discuss the development of “grounding networks” and the shift to meshed structures to reduce damage from overvoltages. Part 2 will appear in our November 2020 issue.
End-product manufacturers can help protect against supply chain disruptions that impact the availability of listed or recognized components by proactively identifying suppliers who can provide substitute components that conform with their listing requirements.
Traditionally, the start of a new year is a time when we reflect on the progress we’ve made during the year passed and set our goals for the new year. We’ve queried training resources in our industry to provide you with an overview of free or affordable solutions to meet your training goals in 2021.
This article analyzes the V-I characteristic of a varistor and shows it is more appropriate to treat the varistor as a current dependent resistance rather than the conventionally taught voltage dependent resistance. Spice circuit examples are given, based on a current dependent resistance varistor model.
This article discusses the IEC 60601 Amendments Project, for Medical Electrical Safety, some of the changes to the General and Collateral Standards of the Project, and their impact on manufacturers. The future of the 60601 series of standards is also discussed.