JOHN'S, Antigua -- Eminem and a handful of old school eighties rockers will be hitting the high notes at the 45th Grammy Awards,...

Ever since he was a teenager in Washington State, Michael A. Corfman has had a penchant for questioning authority. At his Catholic high school...

Well, it's official now. Even the FIFA President is saying that handing the World Cup to Qatar for 2022 was an error. "Of course, it...

Bobby Moore died in 1993 aged only 51. A year before I was stumbling boozily through the back streets of Stockholm with a couple of...

King of the world, master of all I survey... fairytale this may be, but there's no harm in dreaming! Someone recently won a cool...

Draw, recognise and use the circuit diagram for a 555 monostable, treating it as a functional block Calculate the time period, using T...

RC Network At its simplest the RC network is a series circuit consisting of a capacitor and a resistor connected to a source. If we discharge a capacitor,...

Capacitors consist of two metal plates separated by a layer of insulating material called a dielectric.   Capacitance is measured in units called farads (F). A farad is a very...

The operational amplifier was originally developed for analogue computing (our PCs are digital computers) and when introduced were complex and expensive components.  Now they are in...

Transistors are solid state electronic switches.  Solid state means that there are no moving parts, and the switching action is regulated by the arrangement of the semiconductor materials. A...

A resistive transducer is a device that senses a change to cause a change in resistance.  Transducers do NOT generate electricity.  Examples include: Device Action Where used Light Dependent Resistor Resistance falls with increasing light level Light operated switches Thermistor Resistance falls...

Silicon Diodes and Zener Diodes Diodes are one-way electrical valves that allow current to flow in one direction only. Click HERE to find out how diodes are made. ...