Gert Baars (67)

1-12-2005 | Here’s how to turn a small stepper motor into an encoder. After all, a stepper motor has permanent magnets inducing voltages in the rotor co...

1-02-2005 | As we all know, checkout gates in highstreet stores will faithfully sound an alarm if you walk out with an item not ‘cleared’ by checkout st...

1-07-2004 | This circuit consists of six square wave oscillators. Square waves are made up of a large number of harmonics. If six square waves with diff...

1-07-2004 | This broadband AM receiver enables you to ‘monitor’ the shortwave radio band. The circuit has been deliberately designed to have low selecti...

1-07-2004 | Superheterodyne receivers have been mass-produced since around 1924, but for reasons of cost did not become successful until the 1930s. Befo...

1-07-2004 | Crystals usually operate at fundamental frequencies up to about 15 MHz. Whenever higher frequencies are required a frequency multiplier is p...

1-04-2004 | This article, we hope, will have serious consequences. Not negative, mind you, because apart from enabling beginners to experience the thril...

1-12-2003 | Many radio signals in the medium and long wave bands (MW/LW) but also shortwave (SW) are infested by noise of wide variety and of such level...

1-12-2003 | How often on average do you have to call members of your family each day to tell them that dinner is ready, it’s time to leave, and the like...

1-12-2003 | The DDS RF Signal generator described in the October 2003 issue of Elektor Electronics has an internal 10 MHz quartz crystal oscillator for...