Depending where in the world you work, you are likely following one of two standards International Electrotechnical Commission (IEC) National...

I've recently come across this question a couple times browsing the internet. Decided to give a quick answer here. A rectifier transformer is a transformer...

We have had the Wiki with us for a long time now, but at last I have decided to say bye bye – more details on why below.

Before the technical, some general information. E-ink display are found in a lot of e-readers, some mobile phones and similar devices and the intent is...

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

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

Variable frequency drives are widely used to control the speed of ac motors.  This note looks at the mechanisms which enable drive units to control the...

I've been considering a blog on the 110 or 230 Volt issue for a while.  While browsing the Internet I came across a great summary by Borat over at  engineering...

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...