| Rectifying the buzzer signal on a telephone line results in a voltage that may be used to switch one or more loads, for instance, a light...
All items tagged with Electronics and Switch (28)
| The recently introduced LM2575 and LM2577 switch-mode voltage regulators in the Simple Switcher series from National Semiconductor have a...
| 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...
| A frequent annoyance with battery-operated equipment is that just after you switch it on you notice that the battery is fIat. Quite proba...
| This electronic switch is designed to be connected direct to the mains, which obviates a low-voltage supply and so keeps the cost and sp...
| A switch that keeps on giving pulses as lang as it pressed is often required. The circuit here uses the well-known Type 555 for this purp...
| Recent developments in consumer electronics have boosted the popularity of video recorders, portable cameras and camcorders to such an ext...