All items tagged with Circuits & Circuit Design and Audio & Video (13)

3-06-2026 | Can a handful of transistors outperform a microcontroller? This acoustic sensor delivers reliable, fail-safe sound detection and shows how e...

1-06-2026 | Although the audio spectrum ranges from 20 Hz to 20 kHz, it is sometimes advisable to narrow it at the low end to avoid issues at the beginn...

15-05-2026 | The T-Reg high-voltage regulator circuit delivers clean, stable power for tube amps. Supporting output voltages up to 500 V, you can use the...

11-05-2026 | Online music collaboration is difficult due to latency, and common platforms fall short. This audio latency measurement project features an...

7-05-2026 | Mains hum from loudspeakers isn’t always caused by bad wiring, poor cables, interference, or grounding issues. Sometimes the amplifier power...

29-04-2026 | Audio notch filters are useful when an engineer needs to see low-level harmonic distortion that would otherwise be buried under a much large...

27-04-2026 | Professional audio systems often use fully differential signal chains — from inputs and outputs to ADCs, DACs, and filtering stages — to ach...

20-04-2026 | A compact FM wireless microphone turns a simple electret capsule into a short-range transmitter tunable across the FM band. Built around two...

9-03-2026 | Audio amplifier fault diagnosis gets very practical in this short Elektor TV clip. Roberto Armani shows how a square-wave test can reveal be...

27-02-2026 | It's refreshing to revisit circuits that solve real problems with just a few parts and some smart thinking. This simple 4093-based audio pea...