Modelica is an open source (free) software language for modelling complex systems. Having never used it before, I thought I would download a development...

This article gives an introduction to IEEE 485 method for the selection and calculation of battery capacity.

The fundamental component of any analogue computer is the operational amplifier, or op amp. An operational amplifier (often called an op-amp,) is a high...

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 ...

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...

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

Years ago I was told that you should always try to write the best report you can.  Many years later I still think on this as one of the better pieces of...

From the earliest times, humans have found ways to create light. Pre-historic peoples used natural materials (moss, grass, etc.) soaked in animal fat and...

The mobile phone was born in 1973. They were the size of a brick and weighed a couple of kg, making them difficult to fit into your pocket. At a few thousand...

Estimating maximum demand is a topic frequently discussed. Working out how much power to allow for a building can be very subjective . Allowing too much...