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...

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...

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

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

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...

Multimeters are undoubtedly the most common item of electrical test equipment in use.  Often it is the first piece of equipment people will turn to when...

Electrical engineering has a multitude of laws and theorems. It is fair to say the Ohm's Law is one of the more widely known; it not the most known. Developed...

The IET site has a video of a visit showing of a high tech meeting room developed at Napier University in Edinburgh. It a good demonstration of innovative...

myElectrical does not support or promote the use of copyrighted material without the copyright owner's consent. If you believe that material for which...

At the beginning of the year China put the world's first 1,000 kV UHV transmission system into operation. Transmitting power at over a million volts is...