| During the winter many people suffer from Seasonal Affective Disorder (SAD), which is commonly known as the winter blues. With the help of b...
| During the winter many people suffer from Seasonal Affective Disorder (SAD), which is commonly known as the winter blues. With the help of b...
| For the last few years we haven't worried too much about noise in audio any more. In the past, and we mean the pre-CD era, the noise fro...
| The PWM power stage discussed in the previous instalment (June 2009) can be used perfectly well on its own. But a matching preamplifier with...
| Considering its low cost, a commercial walkie-talkie (PMR) set are very suitable for use as a wireless baby monitor, with the addition of se...
| This circuit was specially designed to be used with the FM Audio Transmitter found elsewhere in the Summer Circuits 2009 issue, but it can a...
| One way to detect AC power current and generate a reasonably constant voltage independent of the load is to connect a string of diodes wired...
| Here's how to use commercial wireless audio/video modules to transfer an S/PDIF signal. The S/PDIF signal is connected directly to the video...
| 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...
| Those of you who go camping regularly will have experienced this before: you switch on a powerful electric hob just when the fridge is on an...
| The amount of negative oxygen ions in the ambient air seems to affect the psychological and physical state of many people. The air in the mo...