Tuesday, 23 December 2025
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.
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