Variable frequency drives are widely used to control the speed of ac motors.  This note looks at the mechanisms which enable drive units to control the...

I was reminded of Occam's Razor while reading a book. It's quite a simple principal of logic which has stood the test of time and is accepted as central...

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

Induction motors are frequently used in both industrial and domestic applications.  Within the induction motor, an electrical current in the rotor is induced...

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...

We've been sending out Newsletters on a regular basis for a few weeks now. To do this we have been using Google's Feedburner service. While Feedburner...

This article gives an introduction to IEEE 485 method for the selection and calculation of battery capacity.

This post is quick introduction and overview to different railway electrification voltages used in answer to a question sent in via email. While there...

If you have a great idea or invent something the last thing you want is someone to steal the idea. One of the things you can do is protect the intellectual...

Ever wondered what kind of power an aircraft uses when parked at the airport stand. Normally the aircraft generates it own power, but when parked with...