| Today's computers invsriabky requlre vast amounts of memory, with 16 Mbytes of DRAM generally accepted as a kind of minimum for Windows 96...
A. Rietjens (66)
| The timer is based on a Type 4536 from SGS-Thomson. This IC contains 24 series-connected binary scalers, which divide the frequency of t...
| A simple approach to the problem of frequency doubling a digital signal is shown here. An XOR gate, lC(1a) supplies a needle pulse on the...
| The circuit in the diagram is intended primarly for the rapid selection of two identical resistors (within a few per cent). It does so m...
| Many switching functions are digitally controlled nowadays. A drawback of this is that it can no langer be seen from the position of the...
| Most drainage pumps are fitted with a level swttch that provides a hysteresis of 1O~15 cm. When small volumes are drained, the liquid run...
| A microprocessor-controlled charger is described that surely meets the requirements of most users of NiCd batteries. It is fast, suitable...
| The generator may be of interest to those who wish to record FSK (frequency-shift keying) signals on their tape recorder. Such signals co...
| Some of hefastest PCs around these days, particularly 60-MHz+Pentium and 486- based machines, have a small ventilator fitted on the CPU t...
| The charger is designed to charge NiCd batteries with capacities of 150-4000 mAh. A potential 5 V higher than the nominal voltage of the...