| Some video cameras have a socket for a remote control unit. It appears, however that it is not always easy to connect an interval-contral...
All items tagged with Time and technology (303)
| The present circuit was developed to make it possible for different sensors to be added ro an existing alarm installation. These sensors...
| To prevent the dynamo-driven lights of your bicyle going out when you stop in the dark for, say, traffic lights, the simple circuit here...
| Many people still use the old C64 computer to play games on, but get frequently annoyed by the constant need of changing over the joysti...
| The pump in sorne central-heating systems has two or even three speeds. At the lowest speed, not much hot water is pumped around the cir...
| There are nowadays so many different standards for buses and networks that it was thought useful to present an overview of the most current...
| Telephones are now readily and cheaply available: two identical ones and a handful of components enable a simple house-telephone to be s...
| A frequent annoyance with battery-operated equipment is that just after you switch it on you notice that the battery is fIat. Quite proba...
| The charger deseribed switches off the charging voltage when the battery reaches its full nominal voltage and switches it on again when...
| Some radio amateurs are very keen on accurn te RST reports, others (mostly the VHF/UHF fraternity) never look at the 5- meter on the rec...