| The detector makes sounds at frequencies of 10-300 kHz audible to human beings. The conversion is ca ried out either by a superheterodyne...
Luc Lemmens (178)
| Although it has no detector or alarm actuation device of any kind, the present circuit may still function as a deterrent against car thi...
| This article is intended as a brief introduction to digital signal processors (DSPs) and what makes them different from traditional proce...
| Many car battery chargers costing not more than £12- £15 are pretty spartan devices. Car owners should beware of using such chargers whi...
| Just a few components suffice to provide a car with a visible as well as an audible indication when it is being reversed.
| The very compact converter produces a stable 5 V direct voltage supply from an input of 2.5 V, and is thus eminently suitable tor use in p...
| The battery charger is intended primarily tor charging, and keeping charged, without supervision, lead-acid batteries of cars and motorcyc...
| Any PC, however old, is too valuable to break down as a result of inadequate cooling, usually caused by fan failure. The alarm causes a...
| When a battery is charged by a solar panel during the day, it may discharge via that panel after sunset. This may, of course, be prevente...
| Integrated circuits ISDI012, ISDI016, and ISD I020 from chip maker ISD enable sounds to be recorded and played back. The final two digits...