| 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...
More in Circuits & Circuit Design (76)
| Unlock smarter workouts with a programmable fitness timer that guides your reps, rest periods, and routines with intuitive tones and an OLED...
| This ATtiny85-based voltage-to-frequency converter isolates measurement grounds between solar panels and batteries. It converts analog volta...
| Need a Hall sensor? A strip of copper, a strong magnet, and an LM358 are all you need to explore the Hall effect hands-on. This experimental...
| Before trusting that bargain-bin power adapter, make sure it’s not packing surprises. This DIY AC power adapter tester quickly identifies vo...
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| The low-cost ESP32-C3 SuperMini modules feature a compact SMD antenna. However, the small antenna design greatly restricts the effective Wi-...
| 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...
| Introduction to Electronic Filters is a new Elektor publication by Dr. Peter Dalmaris that teaches readers the principles and applications o...
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| The dynamic compression of audio signals is important for reducing signal peaks to avoid saturation of the output signal. The circuit presen...
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| Elektor has published well over a dozen major articles about soldering over the past 20 years, not to mention the countless bits of solderin...