Burkhard Kainka (212)

1-12-2002 | The valve detector receiver is the logical extension of the crystal detector. This circuit can achieve astonishingly good selectivity, since...

1-10-2002 | With the test probe secure (you hope) on the resistor leg, turning your head to view the voltmeter indication is not always a good idea. Whi...

1-09-2002 | We have received many questions from readers regarding our microcontroller course. The most interesting questions are summarised in this lis...

1-07-2002 | Palm Pilots are just one of the devices that use the IrDA standard for infrared data communication. Most Desktop PCs are not equipped with a...

1-07-2002 | There exist special types of relay that have peculiar characteristics. Next to the ‘normal’ types in the catalogue we find the so-called ‘la...

1-07-2002 | Communication over the IrDA port uses a relatively complex protocol but its possible to send a single character using just a few components....

1-07-2002 | A universal voltage tester should respond to both dc and ac voltages. The usual types with glow-discharge lamps only work with voltages grea...

1-06-2002 | White light LEDs have been a long time in the making. This design (as part of our Mini Project series) employs a simple circuit to make the...

1-06-2002 | Data output from the Flash Board usually takes place via the connected terminal, which means the PC. However, for stand-alone use without a...

1-05-2002 | Till now, the BASIC-52 interpreter was the only choice if you want to run BASIC on the extremely popular Elektor Flash Microcontroller Board...