More about time (745)

1-12-1993 | A solid-state bell-push is far more robust than the usual mechanical type. The touch contact may be made from an audio socket, which has...

1-12-1993 | The timer is based on the well- known display driver LM3915, which has a logarithmic scale. This may seem strange, but is not because a s...

1-12-1993 | Voltage doublers are frequently encountered in electronic circuits. The present one is a variation that is of interest since most digital...

1-12-1993 | The circuit detects a change in video information and uses this to switch on an alarm in a closed-circuit television guard system of a vi...

1-12-1993 | It is often not possible to put a second bell in parallel to the existing one, because the bell transformer is normally already fully loa...

1-12-1993 | The lamp in slide projectors is normally controlled with the aid of a triac in series with it. This method reduces the brightness of the...

1-12-1993 | Nickel-metal-hybride (NiMH) batteries have now become widely available. A typical one is the 120AAH, which has a capacity of 1.2 Ah in si...

1-11-1993 | Build this small add-on unit and put an end to the (often gross) inaccuracy of the real-time clock that ticks in your PC. Complete with a...

1-11-1993 | Fuzzy logic is not fuzzy at all, but a scientifically based way of getting electrical equipment to adapt to us, humans, instead of the o...

1-10-1993 | Knowing the current drawn (by a battery) or generated (by a solar cell) over aperiod of time is a requirement in many applications that c...