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

Traditionally substations have used circuit breakers, current transformers (CT), voltage transformers (VT) and protection relays all wired together using...

Our IEE cable sizing was wrote a few years ago and had become rough around the edges. I thought it was time to give the tool a service. Unfortunately when...

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

A single phase system is perhaps the most common type of system most people are familiar with. This is what people have in their homes and what appliances...

GE have put together a time-lapse video shown flight take-off and landings at some airports. An interesting view:

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

Estimating maximum demand is a topic frequently discussed. Working out how much power to allow for a building can be very subjective . Allowing too much...

Capacitors have numerous applications in electrical and electronic applications.  This note examines the use of capacitors to store electrical energy....

Sometimes it’s useful to be able to quickly lookup a piece of technical information.  This note is a collection of information related to motors, and in...