Elektor Team (11388)

1-07-1979 | Automatic battery chargers are not particularly cheap, however the pro-tection they afford against over-charging and possible battery damage...

1-07-1979 | n games of speed chess, where each player has only 5 or 10 minutes to complete all his moves, mechanical chess clocks leave something to be...

1-07-1979 | The circuit shown here will generate pre-programmable periodic wave-forms. The waveform is stored digitally in two 256 x 4 bit RAMs which a...

1-07-1979 | Most people wilt have seen the desk-top ornament/toy known as a `Newtons cradle` (see figure 1), which consists of usually five steel balls...

1-07-1979 | Most people wilt have seen the desk-top ornament/toy known as a `Newtons cradle` (see figure 1), which consists of usually five steel balls...

1-07-1979 | In most windscreen wiper delay circuits the wiper speed is indepen-dent of the speed of the car. However the faster the car travels, the mor...

1-07-1979 | The following circuit is intended as an infra-red lock for house doors, garage doors, etc. Since the `key` is almost impossible to copy, it...

1-07-1979 | Multiply X and Y and you get XY -all very simple and straightfor-ward -at least on paper. But what if X and Y are analogue voltages, which m...

1-07-1979 | Circuits for synthesising peak pro-gramme meters by using light emitting diodes are certainly not new, but the design shown here offers simp...

1-07-1979 | Il est souvent très utile de vérifier la valeur d`un condensateur suspect ou non marqué, ou de déterminer la valeur d`une inductance que l`o...