| The circuit described here is based on an unusual method of deterring a possible car thief. Shortly after it is started, an engine fault is...
| The circuit described here is based on an unusual method of deterring a possible car thief. Shortly after it is started, an engine fault is...
| Although designed in the first in-stance for use with the universal digital meter which was published in Elektor 45, this circuit for an aut...
| This circuit is intended to give clear warning when it is time to replace the stylus in a record-player car-tridge. The unit indicates the `...
| When housewiring, the addition of an extra switch and light to an ex-isting circuit using the same power supply point would not normally cau...
| A frequency range of 0.1 Hz to 999.9 kHz, a choice of CMOS or TTL output levels, and an accuracy/ stability which is limited only by that of...
| The following simple circuit should prove a useful safety aid to motor-cyclists. In contrast to car drivers, motorcyclists generally only ha...
| If one wants to measure a voltage which is greater than the range (full-scale deflection) of a meter, there are two things which can be done...
| The growing awareness of the con-tributory role which stress plays in causing illness has led to increased interest in various forms of `aut...
| The disadvantage of most wind direction meters is the need for complicated mechanical drive systems which are necessarily prone to wear. The...
| The basic principle of a current dumping amplifier has been de-scribed previously in Elektor (see Elektors 8 and 21). To recap briefly, the...