K. Walraven (99)

1-12-1994 | Switching on inductive loads, such as transformers, causes a very high initial current, because at that instant, the load does not produ...

1-11-1994 | Although wireless communication is nothing special these days, it is not a panacea. Below the ground, tor instance, radio waves will not ge...

1-10-1994 | A circuit is described tor continuously monitoring the various power supply lines in computers. It will also detect spikes (other than RF....

1-07-1994 | Quartz crystals are ground by the manufacturers to oscillate either on the fundamental frequency or on one of the odd harmonics (overton...

1-07-1994 | The MAX187 is eminently suitable for building a good quality 12-bit A-D converter. Communication with the computer is serial, but not vi...

1-07-1994 | This unit is intended as an add-on for the many lead acid battery chargers that have no charge indicator. A green LED shows that the bat...

1-07-1994 | The 80C451 from Signetics is one ofthe many derivates of the 'generic' 8051 originally manufactured by Intel. The obsolescent SC80451CCN...

1-07-1994 | The mains-synchronised oscillator has certain advantages over a simple zero crossing detector. For instance, the brief failing of input p...

1-07-1994 | In many advanced electronic circuits, speed and accuracy are of the utmost importance. It is sometimes overlooked that to achieve these,...

1-07-1994 | The Centronics interface available on almost any IBM PC or compatible lends itself to simple input/ output functions provided the drive c...