Automatic Battery Saver Circuit: Prevent Battery Drain
Dead batteries are every electronics enthusiast’s nightmare. Whether it’s a forgotten device left running overnight or equipment accidentally switched on,…
Month: July 2025
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…
Simple UJT Crystal Checker Circuit: Test Your Crystals Like a Pro
Have you ever wondered whether those crystals sitting in your electronics parts drawer are still functional? As electronics enthusiasts, we…
HydraSDR RFONE: A New Benchmark in Open Source SDR
The software-defined radio (SDR) community is buzzing with excitement following the official release of the HydraSDR RFONE, a compact yet…
Build Your Own Hidden Transmitter Hunter RF Sniffer Circuit
Discover how to build a hidden transmitter hunter using a simple RF sniffer circuit. Ideal for transmitter hunts, bug tracking,…
A Classic Active Antenna for 0.5–30 MHz
Shortwave radio enthusiasts often face the challenge of weak or noisy signals, especially in urban environments. This Classic Active Antenna…
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…
Build a Miniature FM Transmitter – DIY Electronics Project
Miniature FM Transmitter is a compact and effective project ideal for experimenting with radio communication. Whether you’re a student or…