| Overcharging of batteries is prevented by the timely switching off of the charger. A timer that can be set to within a minute can be bui...
All items tagged with Time and Switch (40)
| 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...
| The idea presented here concerns the combination of digital and analogue techniques to produce an intelligent preamplifier with integral t...
| 60 EE March 1989 EPROM-CONTROLLED TIME SWITCH by J. Vinckier Time switches can take many shapes. Where apparatus has to be switched on and o...
| elektor december 1984 The usual inexpensive NiCd chargers available in electronics retail P9 outlets are normally of Far Eastern origin, but...
| 7-day timer/controller Elektor April 1983 The last time we published a single-chip programmable timer was way back in May 1979 and the circu...