Condenser Mic audio amplifier – DIY Guide
The compact, low-cost condenser mic amplifier described here give good-quality audio of 0.5 watts at…
audio
Circuits
DIY
Tools
audio
Circuits
DIY
Tools
Dual microphone noise cancellation using LF351 Op Amp
This dual-microphone noise cancellation circuit uses two microphones placed back-to-back, with one signal inverted and…
Circuits
DIY
HF
QRP
radio
Transmitter
Series Modulated AM Transmitter
This series-modulated AM transmitter uses a simple low-power design where the audio signal is applied…
Circuits
HF
QRP
radio
Transmitter
Class C – AM Transmitter
This Class C AM transmitter uses a high-efficiency amplifier where the transistor conducts for less…
audio
Circuits
DIY
Tools
Noise Cancelling Condenser Microphone
This noise-canceling condenser microphone design uses dual electret microphones with op-amp stages to reduce ambient…