| People think audio amplifier ICs serve only their primary purpose, but how about creating a basic ramp generator using a simple Texas Instru...
Burkhard Kainka (223)
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| While dismantling an old hard disk, the author came across a three-phase motor. It is extremely well mounted and smooth-running. This gave r...
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| On cars and motorcycles, the failure of one direction indicator lamp is signaled by the other light flashing faster. What is the circuit beh...
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| 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...
| When taking measurements in ionization chambers and other radiation sensors, it's often essential to handle small currents in the picoamp to...
| 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...
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| The Elektor book publication with the above title describes a set of Arduino-driven test and measurement instruments — from their principles...
| 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...
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| Need to test the equivalent series resistance of a capacitor? Here is a simple solution.
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| Interested in shortwave radio? Check out this simple two-transistor receiver with extremely wide bandwidth.