Coils of wire on the rotor carry a d.c. current which generates a magnetic field. A stator magnetic field is created using either permanent magnets or...

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

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...

This is the first of two posts on the resistance of conductors. In the next post I will look at the ac resistance, including skin effect and we deal with...

A UPS is an uninterruptible power supply.  It is a device which maintains a continuous supply of electrical power, even in the event of failure of the...

Cable insulation is used to provide electrical separation between conductors of  a cable.  During the historical development of cables, numerous types...

Often document control is dictated by project requirements, for example a particular organisation may have an existing numbering system. Existing company...

The robot folding towels post below was interesting enough at the time to post a link.  Recently I’ve come across a couple of other interesting videos...

Lead acid batteries are cost effect and reliable, making them suitable for many applications.This note examines topics of interest associated with the...

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...