Burkhard Kainka (231)

1-01-2012 | Electronic devices are becoming more and more complex, with simple circuits and discrete transistors practically a thing of the past. This m...

1-11-2011 | All that’s required to measure radiation is a simple PIN photodiode and a suitable preamplifier circuit. We present here an optimised preamp...

1-07-2011 | One circuit diagram shows a particularly simple LED flasher for AC power operation with six channels. All six LEDs flash entirely at random...

1-07-2011 | The circuit shown here is formed of nine inverting transistor amplifier stages connected in series with an LED connected between emitter and...

1-07-2011 | In the early years of radio technology spark transmissions ruled the (air) waves. They occupied a relatively wide bandwidth, in what came to...

1-07-2011 | The ring oscillator comprises a number of inverting transistor amplifier stages connected in series, in which the output of the final stage...

1-07-2011 | Hall sensors can of course be purchased but making them yourself is far more interesting (and satisfying)!According to the theory the crucia...

1-07-2011 | In days gone by a radio amateur always had a dip meter close to hand in his ‘shack’. Now that people can afford oscilloscopes, the poor old...

1-07-2011 | A shortwave audion receiver using only two transistors and a single 1.5 V battery — that must be the ideal entry level into shortwave receiv...

1-07-2011 | If you’ve read old textbooks on electronics basics you may recall how it’s possible to create a multivibrator from just a neon lamp and a ca...