Testing

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 article will discuss the basic kinds of defects that can be alleged in any product liability case, the law as it pertains to compliance with standards, and some tips on how to deal with the issue of standards compliance.

CISPR Publications 24 and 35 allow radiated and conducted immunity tests to be performed using I% or 4% steps. This article looks at measured radiated immunity test data to determine the typical shapes of radiated susceptibilities for multimedia equipment. The authors consider what those shapes tell us about the validity of the 4% step method.

This article discusses the legal and practical issues around the duty to design a safe product and how to decide whether various safety features that aren’t always necessary must be sold as standard features or whether they can be sold separately as options.

This article identifies the burn injury threshold conditions associated with finite thermal mass objects and presents a model for predicting the degree of burn injury.

It’s imperative for successful completion of a testing project that as a compliance engineer or technician leading a product certification effort, you trust but verify the work of testing facilities.

The most common characterization of ground rods actually differs from what is observed in the case of lightning. This article discusses what is observed and how that affects ground rod performance.

Can you continue aiming for typical CDM protection levels? Introduction The ESD Design Window (ESD-DW) has...

Historical Background  CDM is an important model for ESD qualification. The well-known CDM refers to...

You’re an expert at EMC testing but, when it comes to installing, tearing down, and moving an EMC chamber, you may not have a clear understanding of all of the non-engineering tasks that go along with such an important event.