Elektor Team (9517)

1-07-1988 | 0 5 WIDEBAND LEVEL-INDEPENDENT TRIGGER PREAMPLIFIER This circuit eliminates the difficulty in re-adjusting the trigger level of an os- cillo...

1-07-1988 | 05 FAST STARTING WIPER DELAY A wiper delay is essentially a bistable multivibrator whose off-time is adjust- able with a potentiometer. Many...

1-07-1988 | 05 TEST-VOLTAGE SUPPLY For testing zener diodes, base-emitter breakdown, diacs, and so on, a fairly high voltage is needed. The usual type o...

1-07-1988 | 05 Motorist are generally well aware that car fuses do not blow just like that. None the less, when something appears to be amiss in the ele...

1-07-1988 | 05 Currently, 48 MHz quartz crystals are widely available at relatively low cost thanks to their use in computer systems. In these, there is...

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...