Elektor Team (12053)

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...

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 | The criteria for a good domestic intercom system are as follows: First of all, it is essential that each station can call up any other stati...