neazoi
Advanced Member level 6
hello I have successfully build this circuit **broken link removed**
The last three transistors are AF amplifiers but I am not confident of how the first stage works.
When I remove the tuned circuit and feed an audio signal on c2 the audio is amplified.
When the tuned circuit is in place and I feed an audio signal to c2 the audio is still amplified but much less (the tuned circuit keeps mostly the RF)
Is this stage an audio amplifier, a detector or what? What is the principle of operation, I would like to know?
The last three transistors are AF amplifiers but I am not confident of how the first stage works.
When I remove the tuned circuit and feed an audio signal on c2 the audio is amplified.
When the tuned circuit is in place and I feed an audio signal to c2 the audio is still amplified but much less (the tuned circuit keeps mostly the RF)
Is this stage an audio amplifier, a detector or what? What is the principle of operation, I would like to know?