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...

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...

GE's latest thinking on product manufacturing is he Shingijutsu philosophy or Lean production system. They have started applying this at the Louisville...

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...

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

A single phase system is perhaps the most common type of system most people are familiar with. This is what people have in their homes and what appliances...

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

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

Here’s list of some famous scientists. Deliberately short, with the aim to provide a quick memory jog or overview. If your looking for more detailed information...