| In February 2009 we published a monaural mini FM receiver. A matching stereo decoder will naturally make this receiver complete. In this min...
Ton Giesberts (351)
| 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,...
| LEDs are used everywhere these days, not just as on/off indicators any more but now also as a source of light. Before you mount an LED in yo...
| Shoes that light up? No problem, these days you can buy (almost) anything. But it is of course much more fun and challenging to enhance a pa...
| In rooms without adequate heating but containing sensitive equipment it would be nice to obtain at least an indication as to whether the tem...