Wiparat Circuit Electronics

Stereo Broadcast Limiter Circuit for Ramsey. Link

This circuit uses a small microphone to capture the sound and some transistors to generate radio waves that can be picked up by a FM receiver like a car stereo.
From left to right, the first part is the microphone and some resistors to get it working. Next we have a capacitor and the first transistor, [...]

Stereo Decoder with TDA1591 IC. [....] Link