| There seems to be no end to the variety of different sounding door-bel Is which people are prepared to de-sign. Everything from the Hallelu...
| There seems to be no end to the variety of different sounding door-bel Is which people are prepared to de-sign. Everything from the Hallelu...
| elektor july/august 1979 52 Transmitting speech by modulating a beam of light isn`t new. Usually, infra-red is used -as in some `wire-less`...
| With only one or two minor modifi-cations, it is possible to adapt a calculator to increment or decrement two separate numbers and display t...
| With only one or two minor modifi-cations, it is possible to adapt a calculator to increment or decrement two separate numbers and display t...
| Starting with, for example, a music signal, or indeed any other type of sound, the following circuit can be used to generate a variety of i...
| Starting with, for example, a music signal, or indeed any other type of sound, the following circuit can be used to generate a variety of i...
| When flying radio controlled model aeroplanes there is always the chance that a fault will occur in either the transmitter or the receiver,...
| When flying radio controlled model aeroplanes there is always the chance that a fault will occur in either the transmitter or the receiver,...
| The following circuit should prove particularly interesting to those readers considering building their own FM tuner. The novel feature of t...
| An annoying disadvantage of fluor-escent lamps compared to the incandescent variety is the flickering delay before they actually burst into...