All items tagged with Switch and Time (41)

1-12-1991 | Switching transistors are usually driven into saturation. which has an adverse effeet on the switching speed. This effect is eliminated,o...

1-07-1991 | 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...

1-07-1991 | 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...

1-07-1991 | 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...

1-07-1991 | A frequent annoyance with battery-operated equipment is that just after you switch it on you notice that the battery is fIat. Quite proba...

1-12-1990 | 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...

1-04-1990 | The idea presented here concerns the combination of digital and analogue techniques to produce an intelligent preamplifier with integral t...

1-03-1989 | 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...

1-12-1984 | elektor december 1984 The usual inexpensive NiCd chargers available in electronics retail P9 outlets are normally of Far Eastern origin, but...

1-04-1983 | 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...