We have a sister note to this (Robots - Interesting Video), in which I have posted some videos of interesting robots developed by commercial corporations...

Modelica is an open source (free) software language for modelling complex systems. Having never used it before, I thought I would download a development...

Nikola Tesla was born exactly at midnight on July 10, 1856 in the tiny village of Smiljan, Lika in Croatia. In his late teens, Tesla left the village to...

From the earliest times, humans have found ways to create light. Pre-historic peoples used natural materials (moss, grass, etc.) soaked in animal fat and...

The other day I was reading 'Night of the New Magicians' by Mary Pope Osborn with my son.  The story is about a young boy and girl who travel back in time...

The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.

In three phase systems, the use of transformers with three windings (or legs) per side is common.  These three windings are often connected in delta or...

Most installations involve some form of lightning protection system which is connected to an earth electrode.  The function of the earth electrode is to...

There are a lot of interesting two page type notes on various medium voltage topics – switchgear, circuit breakers, bus systems etc. It is on the Siemens...

This is the second post in a series of two on periodic electrical inspections. In the first post, I discussed how often inspections should be carried out...