| 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 Test Measurement News and Circuits & Circuit Design (67)
| Houseplants rarely die suddenly. They decline slowly, often because of inconsistent watering. If you’ve experienced this problem, check out...
| Precision picoammeter webinar: Join host Brian Tristam Williams in welcoming presenter Johannes Sturz for a practical look at ultra-low curr...
| Measuring dynamic currents with an oscilloscope is challenging, but this updated differential current probe makes it simple and affordable....
| Benchtop EMC testing gets very real when a cheap LM2596-style buck converter blows past conducted-emissions limits; this highlight shows why...
| 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...
| Unlock smarter workouts with a programmable fitness timer that guides your reps, rest periods, and routines with intuitive tones and an OLED...
| Before trusting that bargain-bin power adapter, make sure it’s not packing surprises. This DIY AC power adapter tester quickly identifies vo...
| Discover how a Raspberry Pi, a DDS module, and an ADC come together to form a powerful DIY RF sweep generator for RF testing. This compact s...
| Most multimeters struggle with accurately measuring very low resistances, but this DIY milliohm meter fills that gap. Designed to measure fr...