| The object of this circuit is turn the domestic lighting on and off in complete safety in a room with very high humidity. A detector, flush-...
All items tagged with Magnetic and Gerber (8)
| The circuit described in this article is incredibly sensitive to changes in the magnetic field. It can be used to detect earthquakes, but it...
| UK mobile telephony providers are busy rolling out their nationwide 3G network for UMTS. According to a cautious estimate, it will eventuall...
| The debate concerning the possible harmful effects of electrical and magnetic alternating fields in our environment goes on. The only thing...
| How do you know accurately if a magnet is stronger or weaker than one you’ve dubbed your reference device? This simple to build instrument h...
| Surveys show that people are feeling increasingly less safe. Consequently, protecting property and buildings receives more and more attentio...
| There are various types of remote-control extenders. Many of them use an electrical or electromagnetic link to carry the signal from one roo...
| Credit cards, Eurocheque cards, other types of bank cards and car park tickets: even if many of these cards contain chips, they all have mag...