The mobile phone was born in 1973. They were the size of a brick and weighed a couple of kg, making them difficult to fit into your pocket. At a few thousand...

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

I received this question by email a few weeks. First thoughts was that it is a product of the mathematics of rotating a straight conductor in a magnetic...

The other day I came across an article in Technology Review on the development of a smart transformer. A professor at North Carolina State University is...

Anyone specifying or using electric motors should have a basic understanding how the insulation is related to temperature. Three classes of insulation...

Maxwell's Equations are a set of fundamental relationships, which govern how electric and magnetic fields interact. The equations explain how these fields...

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

Depending where in the world you work, you are likely following one of two standards International Electrotechnical Commission (IEC) National...

Carrying out a protection system discrimination study is critical to ensure the correct functioning of  the electrical system in the event of faults. ...

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