| This simple inductance meter uses an ATmega328 and LM339 to measure coil values at low cost. The design provides a practical way to estimate...
All items tagged with Test & Measurement and DIY electronics (71)
| Meet Jan de Jong, an Elektor reader for over 55 years and a retired electronics enthusiast with decades of experience in building and repair...
€5 (FREE for Members)
| This second part of the small project series is a practical guide to assembling and testing the precision laboratory power supply presented...
| A DIY square-wave source doesn’t need to be complicated. This compact 1992 design delivers 57 stable, TTL-compatible frequencies from a sing...
| Houseplants rarely die suddenly. They decline slowly, often because of inconsistent watering. If you’ve experienced this problem, check out...
€5 (FREE for Members)
| Keeping lithium cells or batteries in spare parts boxes isn’t very practical if you can’t verify their efficiency or actual charge capacity....
| 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...
| Need a reliable calibration source? Our featured circuit delivers precise voltages from -10 V to +10 V (20 µV steps) and currents up to 40 m...
| Build your own compact FM stereo test transmitter that generates ultra-low distortion audio and precise VHF signals using only simple CMOS l...
| Your circuit works, but is it compliant? In the following video, we dive into electromagnetic compliance (EMC) basics: radiated emissions, c...