Safety

Extreme solar storm hit earth

A massive solar storm rocked the Earth’s atmosphere with charged particles this weekend, triggering spectacular auroras in the night sky across a substantial swath of both North America and Europe. Over the last weekend, one of the strongest geomagnetic storms of the millennium was experienced. ‘Extreme’ solar storm triggers Northern Lights as far south as

Light bulbs and tubes bans in 2023

The time has come to phase out the use of toxic materials, such as mercury and phosphorus, in order to protect human health and the environment from their harmful effects. In the European Union, the use of mercury in products has been phased out gradually since 2006, and it is restricted by the RoHS Directive

Lithium charging security

Don’t do this! (There’s a much safer way) https://www.youtube.com/watch?v=M88e1r8nvYk Big Clive discovered there’s a “thing” going around where people are charging lithium cells by attaching a stripped USB lead directly to them. Normally lithium cells are very safe if undamaged and correct charging procedures are used. But overcharging them like this can result in cell

Unusual aircraft GPS interference

Finland’s Transport and Communications Agency, Traficom, has issued a public announcement informing of an unusual spike in GPS interference near the country’s eastern border. According to reports, the interference isn’t limited to Finland but also affects Poland, Lithuania, Latvia, and the broader Baltic region. This spoofing is relatively easy because the actual GPS signal is

The shocking power supplies

Transformerless power supplies are showing up a lot, especially in inexpensive products where the cost of a transformer would add significantly to the BOM. But transformerless power supplies are a double-edged sword. You can get yourself easily electrocuted if you don’t understand them and take proper safety precautions. Poking around in a transformerless-powered device can

Differential oscilloscope probes

By far the most used oscilloscope probes are the passive 10:1 attenuation probe. Next step in probe categories are active probes. Active probes succeed in practically eliminating reactive loading of the circuit under investigation by means of a small solid-state amplifier in the probe body adjacent to the tip. There are two main classes of

Fire and Smoke Alarm Systems

Smoke and fire alarms can save lives. The occupant and the housing company are responsible for the acquisition and maintenance of smoke alarms in Finland. It is the duty of the occupant of the flat, i.e. the resident, to buy a smoke alarm and to keep it in good working order. Smoke alarms must meet