Elektor Team (9512)

1-07-1988 | 05 DO D1 0 D2 0 D3 0 D4 0 D5 0 D6 0 D7 0 Digitally controlled attenuators almost invariably use some kind of tapped re- sistor network to si...

1-07-1988 | EE JULY/AUGUST 1988 05 This electronic version of the reversible 5V sand-glass uses a set of LEDs to simulate the passing of sand grains fro...

1-07-1988 | This stepper motor driver is simple without compromising versatility. It has a conventional computer interface, an optional on-board clock g...

1-07-1988 | EE JULY/AUGUST 1988 The Type TEA5114 from Thomson-CSF comprises three electronic switches fol- lowed by a buffer/amplifier. Normally the vol...

1-07-1988 | This negative voltage converter differs from a host of other designs in not being set up around the latest integrated cir- cuit. The circuit...

1-07-1988 | It happens from time to time that very large voltage spikes (lightning; switching of large loads) are superim- posed on the mains. Although...

1-07-1988 | EE JULY/AUGUST 1988 06 FROM ALTIMETER TO VARIOMETER The altimeter published some 18 months ago 0) can be adapted to func- tion as a variomet...

1-07-1988 | 06 BACKGROUND-NOISE SUPPRESSOR Hiss, crackling, and other discordant sounds are disconcerting and frequent sources of annoyance to most musi...

1-07-1988 | 0 The d.c. component of a signal can only be detected by separating it from the a.c. component. This is most con- veniently done by filterin...

1-07-1988 | EE JULY/AUGUST 1988 The circuit consists of three distinct sec- tions. The first consists of a straightfor- ward amplifier, ICI. and IClb. T...