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…
Month: July 2025
DIY 3-Transistor FM Bug Transmitter Using Piezo Mic
Ever wanted to build a simple FM bug transmitter for short-range audio monitoring? This compact and low-power 3-transistor FM bug…
How to Build a 3-Watt AM Radio Transmitter
Radio frequency (RF) electronics presents an intriguing convergence of theoretical concepts and real-world implementation. For enthusiasts and engineering students, building…
Build a Simple 40 Metre CW Transmitter Using 2N2222
Looking to experiment with amateur radio on the 40-metre band? This Simple 40 Metre CW Transmitter Using 2N2222 is a…
Simple FM Transmitter Using BC547 Transistors
If you’re a radio electronics enthusiast or hobbyist, building a Simple FM transmitter using readily available components like BC547 transistors…
Build Your Own Two Transistor Radio: A Simple DIY Project
Do you love electronics and want a fun, beginner-friendly project? Build a two transistor radio! This classic DIY project, featuring…
Reflex radio: A Deep Dive into the one transistor radio
Step into the fascinating world of minimalist electronics with one of the most classic and rewarding projects: the one transistor…
Crystal Radio Explained How to Build Your Own No Power Radio
What is a Crystal Radio? Crystal radios are the most basic type of radio receivers, requiring no external power source…
DIY Lithium-Ion Solar Charger for 2-Cell Batteries
Harnessing solar power to charge lithium-ion batteries is not only energy-efficient but also an eco-conscious choice for portable electronics. In…
LILYGO T-Embed ESP32 SI4732 Radio: In-Depth Technical Analysis & User Review
The LILYGO T-Embed ESP32 SI4732 radio represents a groundbreaking fusion of modern microcontroller technology and professional-grade radio reception capabilities. This…