| A DIY square-wave source doesn’t need to be complicated. This compact 1992 design delivers 57 stable, TTL-compatible frequencies from a sing...
All items tagged with Circuits & Circuit Design and DIY electronics (118)
| A structured guide to digital electronics that moves from core logic building blocks to unconventional logic concepts and practical circuit...
| In the mid-1970s, seat belt safety was only beginning to receive serious attention. In 1976, Elektor introduced a clever seat belt reminder...
| Houseplants rarely die suddenly. They decline slowly, often because of inconsistent watering. If you’ve experienced this problem, check out...
| Ready to solder? This audio series delivers easy-to-build DIY circuits, beginner-friendly components, just enough electronics theory, and lo...
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| This article covers an extended, symmetrical version of an adjustable DC load. The design is suitable, for example, for testing the typicall...
| Measuring dynamic currents with an oscilloscope is challenging, but this updated differential current probe makes it simple and affordable....
| Most PC “mic” inputs are pretty average for noise and distortion, and they’re usually mono. Plus, they can’t properly take balanced, pro mic...
| Make your analog breadboard experiments instantly audible with Elektor’s first analog T-board, featuring a compact class-D amplifier, DC/DC...
| A blast from the Elektor archives: this clever 1998 battery tester uses a simple LED display to reveal a battery’s true condition under load...