What is a “level of protection”? What are “measures of safety”? Why do they apply only to electric shock and not to other injuries?
Why? Why is it that one of the biggest aggravations in product safety is that of markings? For some reason, it seems that we can never get the markings right the first time. Furthermore, it seems that markings that have been acceptable for years will suddenly go bad.
The best solution to fire - any fire - is to prevent fire in the first place.
Probably the single most frequently occurring and most misunderstood issue in electronic product safety is electrically-caused fire. I thought I would review fire processes in plastics materials (the most common flammable construction material in electronic products).
Richard Nute examines how transformers behave when subjected to transient overvoltage, both magnetically and capacitively.
The leakage current measuring circuits in IEC 950 and those in North America are exactly the same.
Almost every safety standard has requirements addressing the accessibility of certain parts.
For the purposes of safety, what is “working voltage,” and what is its relevance to the safety of the equipment?