Elektor Team (9517)

1-12-2002 | Slide scanners are available in all sorts and sizes, but if you want a reasonable level of quality they are rather expensive. Besides that,...

1-12-2002 | The circuit diagram shows a switched-capacitor voltage inverter with +5-V input and –3-V output, along with a supplementary cascade stage to...

1-12-2002 | There’s nothing new about a current source consisting of a transistor, a resistor and an LED to provide the reference voltage. However, what...

1-07-2002 | The joysticks used in games and modelling contain two potentiometers with a resistance of about 100 k?, which turn through 60 to 90 degrees....

1-07-2002 | This circuit can be used to superimpose a 143-kHz carrier on the mains voltage, which allows various applications to be realised. One exampl...

1-07-2002 | This receiver/decoder forms part of a simple mains network remote control system, which also includes the ‘Mains Remote Transmitter’ and the...

1-07-2002 | This application can actually be considered to be a slight adaptation of the standard use of the Holtek HT12E encoder (www.holtek.com). We h...

1-07-2002 | This compact design forms a remotely operated switch that receives its control signal via the mains voltage. The switch is operated using th...

1-07-2002 | An RF detector with a dynamic range of 40 dB can now be obtained from Linear Technology (http://www.lineartech. com/pdf/5505i.pdf). The type...

1-07-2002 | This circuit should be considered as more of an experimental circuit for AM demodulation, than as a practical application. In the associated...