More about Free (264)

1-01-2004 | A headphone amplifier with outstanding sound quality can be built using readily available modern components. Omitting the output transformer...

1-12-2003 | Depending on local regulations and the telephone company you happen to be connected to, the voltage on a free telephone line can be anything...

1-04-2003 | Alongside a wide variety of expensive, up-market products, two reasonably powerful C compilers for microcontrollers have emerged in the free...

1-01-2003 | Unless a loudspeaker uses a single full-range driver, a crossover will be needed to split up the audio spectrum into discrete bands of frequ...

1-12-2002 | Portable radios, CD-players and cassette recorders that can also be operated from mains power often do not have a mains power switch, but in...

1-12-2002 | For some time now, all sorts of designs using FPGAs, CPLDs and other programmable logic devices can be found on the Internet. The complexity...

1-11-2002 | This light-box frame can be easily built by anybody and lets you accurately align films on double-sided PCBs.Making your own PCBs is fairly...

1-06-2002 | The word ‘free’ is always sure to trigger reader response but we’d say hold your horses. Here, the word should be taken to mean ‘liberated’...

1-03-2002 | The 8051 (and its hoard of follow-up compatible derivates) is the most widely used microcontroller in the industry. One of the advantages of...

1-07-2001 | This 455-kHz quadrature detector for narrow-band FM signals boasts two important advantages: it is pleasantly simple and it does not require...