| 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 (218)
| 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...
| On cars and motorcycles, the failure of one direction indicator lamp is signaled by the other light flashing faster. What is the circuit beh...
| 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...
| 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...
| Familiar with PTC fuses? Here is a circuit with two PTC fuses, each designed for 100 mA.
| Looking for a friendly way to scare away annoying birds? Here's a simple do-it-yourself electronic solution.
| Let’s take a look at how a neon lamp can be used as a photocell.