| A handful of CMOS logic chips is all it takes to build this versatile warning alarm. Discover a classic 1980 Elektor design that monitors se...
More in Circuits & Circuit Design (112)
| System check! Elektor wants to know how you feel about PCB design. What type of PCB do you design most often? Which factors influence your d...
€5 (FREE for Members)
| Build a compact battery-powered load-step tester to evaluate bench power supply transient response. Using MOSFET switching and Schmitt-trigg...
€5 (FREE for Members)
| An Arduino Nano microcontroller provides a simple and cost-effective platform for battery measurements and testing. When paired with TestLab...
| Can a simple medium-wave radio receive shortwave broadcasts? In 2005, Burkhard Kainka answered that question with a creative two-transistor...
€5 (FREE for Members)
| For many years, television sets were not equipped with a real on/off switch. This circuit completely disconnects the TV from the mains via r...
| How were engineers charging Li-ion batteries before today's highly integrated charger modules? Back in 2007, Elektor published a compact MAX...
| CoffeeCaller is an open-hardware nRF52840 platform that shows the practical work behind reproducible embedded hardware. In this Elektor Engi...
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| Can a genuinely useful new circuit configuration still be created for an IC that has already been used hundreds of billions of times over th...
| Can a handful of transistors outperform a microcontroller? This acoustic sensor delivers reliable, fail-safe sound detection and shows how e...