| In the world of model railways, electronics is playing an increasingly important role, and it is only a matter of time before the micro-proc...
| In the world of model railways, electronics is playing an increasingly important role, and it is only a matter of time before the micro-proc...
| With the aid of the following circuit a seven-segment display can be gener-ated on an oscilloscope screen. The height and width of the digi...
| To accurately measure the con-centration of hydrogen ions (pH value) in a solution, a `glass electrode` is often used in chemistry laborat...
| This robot is an example of a simple cybernetic model, i.e. it will take whatever manoeuvres necessary to navigate its way around any obsta...
| With the overcrowding that is a common feature of most car parks nowadays, the chances of coming back to one` s car and finding a dent in t...
| The circuit described here was designed to fulfill the need for a jet airliner sound effects generator in a school play which involved an at...
| Mechanical mileage recorders for bicycles have been commonly available for a large number of years, however there are several advantages to...
| Slide shows can be improved greatly by providing them with accom-panying music and spoken comment from a tape. One way of changing the slide...
| 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...
| When making one`s own wine, the fermentation rate can for the most part be estimated by counting the number of times the level of the (steri...