DIY 3-Transistor FM Bug Transmitter Using Piezo Mic

DIY 3-Transistor FM Bug Transmitter Using Piezo Mic: This compact and low-power 3-transistor FM bug Transmitter circuit is perfect for DIY enthusiasts and RF hobbyists. It uses a piezo buzzer as a microphone.

Simple Incandescent Lamp Flasher Circuit Using 7555 Timer

Simple Incandescent Lamp Flasher Circuit Using 7555 Timer: Build a simple incandescent lamp flasher using a 7555 timer and MOSFETs. Ideal for DIY projects with adjustable flash rate and low parts count.

DIY 3-Transistor FM Bug Transmitter Using Piezo Mic

DIY 3-Transistor FM Bug Transmitter Using Piezo Mic: This compact and low-power 3-transistor FM bug Transmitter circuit is perfect for DIY enthusiasts and RF hobbyists. It uses a piezo buzzer as a microphone.

Log audio Compressor Circuit for Smooth Natural Compression

Log audio Compressor Circuit for Smooth Natural Compression: Build a log audio compressor circuit using BC549 transistors and diodes for smooth signal compression over a 60 dB range. Ideal for mic-level signals.

Build Your Own Hidden Transmitter Hunter RF Sniffer Circuit

Build Your Own Hidden Transmitter Hunter RF Sniffer Circuit: Discover how to build a hidden transmitter hunter using a simple RF snifter circuit. Ideal for transmitter hunts and bug tracking with minimal components.

Build a Simple Speech Processor Circuit Using LM358

Build a Simple Speech Processor Circuit Using LM358: Learn how to build a simple speech processor circuit using LM358 op-amp. Ideal for amateur radio, audio processing, and voice compression application.