Simple Receiver S-Meter Circuit for Your Radio
A receiver S-meter is an essential instrument that measures signal strength in radio receivers. It provides visual feedback about incoming…
Category: audio
Simple UJT Morse Code Practice Oscillator Circuit
A UJT Morse code practice oscillator is a simple electronic circuit that generates audio tones. Ham radio operators and electronics beginners…
Pink Noise Generator Circuit Using 741 Op-Amps
Testing audio equipment often requires a broad frequency stimulus. While white noise is commonly used, pink noise offers a more…
Build a Simple Speech Processor Circuit Using LM358
A speech processor is an essential component in amateur radio and audio systems that enhances voice clarity and intelligibility. This…
Log audio Compressor Circuit for Smooth Natural Compression
In audio processing—especially in public address systems, transmitters, and recording setups—controlling the dynamic range of signals is crucial. A log…
Audio Clipper Circuit Using BC547 and 1N914 Diodes
If you’re working on speech processing for PA systems or amateur radio transmitters, managing the dynamic range of your audio…
Microphone Preamplifier with Audio Peak Limiter
The circuit shared here is a Microphone Preamplifier with Audio Peak Limiter, often used in audio recording, amateur radio, or…
TL081 Speech Processor for HF Rigs
TL081 Speech Processor for HF Rigs If you are into amateur radio or HF rigs, you know how important clear…
The Poor-Man’s Transmitter: Building a Simple AM Radio Beacon from Vintage Electronics
Electronics hobbyists had a golden age when garages had workbenches. Teenagers dreamed of building radio stations during this time. The…
NJM4558 Audio Compressor Circuit: Complete Schematic & Build Guide
The NJM4558 audio compressor represents one of the most reliable and widely-used integrated circuits in professional audio applications. Furthermore, this…