Burkhard Kainka (231)

1-08-2024 | On cars and motorcycles, the failure of one direction indicator lamp is signaled by the other light flashing faster. What is the circuit beh...

1-08-2024 | As a tool for use in Morse code practice sessions at his amateur radio club, the author built this simple IR transmitter/receiver design. Th...

29-07-2024 | When taking measurements in ionization chambers and other radiation sensors, it's often essential to handle small currents in the picoamp to...

24-07-2024 | A Vector Network Analyzer (VNA) measures the real and imaginary parts of a signal, which together can be represented as a vector on a Smith...

1-05-2024 | The Elektor book publication with the above title describes a set of Arduino-driven test and measurement instruments — from their principles...

29-11-2023 | RTL-SDR Blog sticks have been around for a while. They can receive HF signals up to 1,000 MHz or higher. The RTL-SDR Blog V4 is the fourth g...

1-08-2023 | Need to test the equivalent series resistance of a capacitor? Here is a simple solution.

1-08-2023 | Interested in shortwave radio? Check out this simple two-transistor receiver with extremely wide bandwidth.

1-08-2023 | Familiar with PTC fuses? Here is a circuit with two PTC fuses, each designed for 100 mA.

1-08-2023 | Looking for a friendly way to scare away annoying birds? Here's a simple do-it-yourself electronic solution.