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

If you are working on a large plan, get the real coordinates [latitude, longitude] for two or more points and add them to the drawing. That way you can...

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...

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...

Earthing of electrical systems is essential for the correct functioning and the protecting of life and equipment in the event of faults.  The earth electrode...

When selecting a cable, the performance of the cable under fault conditions is an important consideration. It is important that calculations be carried...

IEC 60228 is the International Electrotechnical Commission's international standard on conductors of insulated cables. Among other things, it defines a...

When sizing cables, the heat generated  by losses within any sheath or armour need to be evaluated. When significant, it becomes a factor to be considered...

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

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