Collection of links to various places with useful motor information. I’ll try and return to the page every now and again to update it with any motor notes...

Various techniques exist to enable the correct selection of batteries for UPS applications.  The procedure described below is one of the more common. ...

The image (reproduced from IEC 60909) shows a typical fault in an ac system.  From the illustration it can seen that there is an initial dc component ...

Electromechanical relays have been the traditional backbone of electrical protection systems.  While over recent years these have been replaced by microprocessor...

One of the requirements to ensuring that everything works is to have equipment selected, manufactured and verified [tested] to IEC standards. Not all equipment...

Battery powered cars are a hot topic and widely debated. The pros, cons, issues and time frames can be talked about endlessly. An article by the Telegraph...

MIT OpenCourseWare, makes the materials used in teaching all MIT subjects available on the Web, free of charge, to any user in the world.

Electrical notes are a collaborative collection of electrical engineering information and educational material. Any registered user can add content. ...

Years ago I was told that you should always try to write the best report you can.  Many years later I still think on this as one of the better pieces of...

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...