| 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...
Ton Giesberts (354)
| 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...
| In February 2009 we published a monaural mini FM receiver. A matching stereo decoder will naturally make this receiver complete. In this min...
| In many cases, the load connected to a voltage regulator is not returned to ground but to an even lower voltage or perhaps even the negative...
| These days tiny FM radios are often integrated in many portable devices such as mobile phones and MP3 players. But why not make a simple rec...
| Water is vital for humans, but too much of it has an undesirable effect, particularly when it turns up in the wrong places. This is what two...
| Using the circuit described here you can quickly and simply check whether harmful sounds with a high frequency are being produced somewhere...
| This circuit idea is certainly not new, but when it comes to making a trade-off between using a small, short-circuit proof transformer or a...
| These days there is an increasing number of devices that have a digital audio output, for example digital cable tuners, satellite receivers,...