Elektor Team (12076)

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 advantages of a digital multi-meter are sufficiently well known that they do not need to be repeated here. However there are situations...

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 metal detectors suffer from one sort of drawback or another, perhaps the most serious being the tendency of the oscillator frequency to...

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 | 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...