Capacitors are widely used in electrical engineering for functions such as energy storage, power factor correction, voltage compensation and many others...

If you want to check a circuit is dead (not live), you should always use the three point method. First check a known live circuit, then check the dead...

The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.

"I can live with doubt and uncertainty and not knowing. I think it is much more interesting to live not knowing than to have answers that might be wrong...

If your are ever called out to troubleshoot something on your electrical system, one of the first things consider is the supply voltage. You want to ensure...

A fundamental concept behind the operation of alternating current systems is that voltage and current waveforms will be sinusoidal – a Sine Wave. This...

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...

The International System of Units (abbreviated SI) is the world's most widely used system of units.  The system consists of a set of units and prefixes...

Tapping your forearm or hand with a finger could soon be the way you interact with gadgets. A new technology created by Microsoft and Carnegie Mellon ...

The other day I was talking to a colleague who is a building services consultant.  Despite regularly specifying dry-type/cast resin transformers he was...