Safety

It’s been four-and-a-half years since Japan’s Fukushima nuclear accident. Today, a report in The New York Times notes that, in that time, nobody has died from radiation directly. Nobody’s even been “sickened.” While that seems miraculous, there were, however, 1,600 stress-related deaths in the aftermath of the meltdown https://www.inverse.com/article/6336-panic-caused-more-death-than-radiation-at-fukushima Posted from WordPress for Android →

Many laptops are pretty well known for having terrible audio interfaces. There are usually noise and grounding issues. This article tries to describe the reasons for those problems. Grounded power supply issues A recent post Yet Another Dell Laptop Audio Grounding Problem blog posting documents a well known and horrendous audio problem found on many →

Remember the Apple AC adapters with the swappable prongs? The little plugin piece would slide so conveniently into the charging side? You might use such adapter with your iPhone, iPad or Mac computer. Your Apple AC Adapter Might Have Been Recalled. Apple said today that some of the AC adapters where you can swap the →

A power supply is an electronic device that supplies electric energy to an electrical load. Most of the power supplies you use every day are the AC-DC power supplies that convert mains AC power (typically in 100-240V range) to low voltage DC (typically 5V to 24V). In those power supplies the output will be electrically →

I wrote earlier about bad UK power socket adapter. Here is another one – better but not ideal. I used this to connect smart phone charger. The basic construction looks good. You can’t touch the live parts with finger. The UK pins are all metal and not insulated on the upper side like in newer →

Or lack of safety? This example is one cheap UK-schuco adapter. First look reveals that there is no fuse in UK plug (there should be max 13A fuse). There is no grounding on adapter (just plastic pin in place of ground pin), but accepts grouded equipment plug. But there is worse problem: when plug is →

Internet of Things is going to affect more and more our everyday life. All kinds of devices have got or are getting network connectivity. It seems that the IoE is inevitable. We must expect a rapidly growing number of devices to be rendered “smart” and thence to become interconnected. Internet of Everything’ (IoE) – the →

A fluorescent lamp or a fluorescent tube is a low pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. A fluorescent lamps are widely used because they convert electrical energy into useful light much more efficiently than incandescent lamps (The luminous efficacy can exceed 100 lumens per watt). They are widely used in →

Celebrating 100 Years of Safety & Interoperability For 100 years companies and workers alike have relied upon the National Electrical Safety Code (NESC) to help guard the safety and efficiency of electric supply, communication lines, and related equipment. One of the oldest and most ubiquitous safety codes, the NESC has been in continuous use since →

Yesterday I passed SFS6002 electrical safety course and got SFS 6002 käytännössä book. SFS 6002 electrical safety training is for all electrical work in Finland engaged in compulsory education, which must be renewed every five years. Now I know somewhat more than before on electrical safety related to electrical installations. SFS6002 is a Finnish standard →