| Various animal welfare associations everywhere in Europe have designated 2011 as the Year of the Bat. Their aim is to enhance public awarene...
| Various animal welfare associations everywhere in Europe have designated 2011 as the Year of the Bat. Their aim is to enhance public awarene...
| The PWM power stage discussed in the previous instalment (June 2009) can be used perfectly well on its own. But a matching preamplifier with...
| There are plenty of designs for simple audio power amplifiers. These generally have a class-AB or class-B topology. Here we present a very c...
| Capacitive switches have clear advantages compared to other types of touch switches (for example 50 Hz or 60 Hz detection or resistance dete...
| Electronics moves with the times. Over the years the options available change and there are ever different solutions to realising a certain...
| Circuits that convert a DC supply into a 50 Hz AC supply are called inverters. Commercial units are notable for their small size, high effic...
| Hard water is still the cause of all sorts of problems, in spite of the fact that standard tap water these days is (partially) decalcified....
| The debate still goes on as to which are better, valves or transistors. We don't intend to get involved in that argument here. But if y...
| Rechargeable 1.2-V AA cells are very popular for a large variety of (portable) applications. The number of different brands is enormous and...
| Of necessity, today’s (surround) amplifiers have to come with lots of inputs and outputs. However, a problem occurs if you want to use sever...