Elektor Team (9517)

1-07-1985 | siren Agsrimi In spite of its modest configuration, the circuit shown here is capable of generating quite a sound. This is made possible by...

1-07-1985 | Water and gas pipes, as well as elec- trical conduit, embedded in walls are not easy to trace, although this is essential when work is to be...

1-07-1985 | If you still alter your central heating system"s boiler thermostat according to the season (many people nowadays leave it at the same — fa...

1-07-1985 | The LM35 is a temperature sensor which provides an output voltage that is directly proportional to the tempera- ture being measured in degre...

1-07-1985 | capacitor itself is charged to about 12 V. Diode D3 is then reverse biased, but D4conducts, so that C4 is charged to just over 20 V, which i...

1-07-1985 | elektor july/august 1985 A bicycle or tricycle should, as everyone knows, be fitted with front and rear lights. The noteworthy aspect of the...

1-07-1985 | Even in this era of programmable, polyphonic synthesizers, interest in simple, monophonic keyboard instruments remains. Many FORM- ANT owner...

1-07-1985 | Infra-red light barriers enjoy great popularity as timing devices at sports venues, as detectors in alarm instal- lations, as optoelectronic...

1-07-1985 | It is sometimes required in certain cir- cuits that are powered from just one battery to derive a negative supply voltage from the positive...

1-07-1985 | This little unit may be used to give an audible alarm when, for instance, a washing machine hose has burst, or when it starts to rain so you...