Elektor Team (9510)

1-07-1988 | 0 DRIVER FOR BIPOLAR STEPPER MOTORS For some applications, the Universal control for stepper motors (see in) may be considered too extensive...

1-07-1988 | Owners of the Acorn Electron home computer may well object to its interlac- ed, and therefore slightly instable, pic- ture. There is a trace...

1-07-1988 | EE JULY/AUGUST 1988 05 This is one of the very few "one-armed bandits" to which the maxim the sole way to win is not to gamble is not ap- pl...

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...