The calculation of current in a three phase system has been brought up on our site feedback and is a discussion I seem to get involved in every now and...

The widely used United Sates standard ANSI/IEEE C37.2 'Electrical Power System Device Function Numbers, Acronyms, and Contact Designations' deals with...

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...

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

When current flows within a wire, a magnetic field is created. The potion of this magnetic field perpendicular to the wire is called the magnetic flux...

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...

Motor starting and its associated problems are well-known to many people who have worked on large industrial processes. However, these things are, of course...

American inventor Thomas Alva Edison was born in Milan, Ohio on February 11, 1847. He was the youngest of seven children and received little formal schooling...

If you want to check a circuit is dead (not live), you should always use the three point method. First check a known live circuit, then check the dead...

Control theory looks at how systems work and are controlled from a mathematical view.  This note gives a brief introduction to some of the concepts – more...