Burkhard Kainka (231)

17-12-2020 | This very private AM station enables you to receive the good old BBC by Internet radio and rebroadcast it inductively on medium wave. Just l...

1-07-2020 | Anyone who designs, builds, or repairs radio receivers can make good use of a small AM signal generator. With a suitable signal waveform, yo...

1-07-2020 | Can a simple strip of copper become a useful Hall sensor? This hands-on experiment shows how a copper PCB trace, a sensitive amplifier, and...

1-07-2020 | 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...

1-07-2020 | You occasionally see advertising signs in shops with a blinking LED that seems to blink forever while operating from a single battery cell....

1-07-2020 | Here’s a quick primer on sending data over the SPI bus from one microcontroller to another. The data is this case consists of 10-bit reading...

1-07-2020 | An extremely basic oscilloscope is better than none at all and sometimes it’s more important that the device is very small, standalone and e...

1-07-2020 | If we only used electronics to process existing signals, we would be missing an important aspect of electronics: generating oscillating sign...

1-09-2019 | The WSPR (Weak Signal Propagation Reporter, pronounced ‘whisper’) radio transmission technique was developed to enable considerable distance...

1-05-2019 | The final instalment of the short series on opamp basics explores some of the more unusual features of operational amplifiers. Another topic...