More about phone (291)

1-07-2008 | 48 V ‘phantom’ powering has become the standard for professional condenser microphones. Many microphones are fitted with an output transform...

1-07-2008 | Nowadays microcontroller circuits that cannot be connected to a PC are hopelessly old-fashioned. One option is to use one of the many types...

1-07-2008 | This circuit can be called using your mobile or a regular telephone set (with DTMF keys) and after passing some procedures, you can control...

1-05-2008 | As early as 1972, a telephone answering machine appeared on the market that was second to none: The ‘Alibi-Nota FL’ with remote listening /...

1-11-2007 | More and more ISPs, are offering subscribers an extra phone line using Voice over IP (VoIP) on top of their Internet access.The project desc...

1-11-2007 | Some audio amplifier designs incorporate ‘loudness compensation’ which boosts the bass and treble frequencies at low volume settings so that...

1-10-2007 | The boom in camera phones means you can now pick up tiny snap-on flash guns for a couple of pounds if you know where to look. And if you loo...

1-10-2007 | A few years ago I rediscovered my father’s set and again was delighted by its performance and simplicity, especially as crystal sets don’t u...

1-07-2007 | On his website, under the title ‘AVR Blue Remote’, the author describes (in German) a Bluetooth-based remote control unit featuring six outp...

1-04-2007 | The market for electronic gadgets thrives like never before. Can we still make something nice ourselves? Yes of course! In this month’s Modd...