
In this project, first of all the antenna grabs all kind of signals from air then passes to the tuner. The tuner is used to adjust the desired frequency. For medium wave AM receiver, it is between 550kHz – 1600kHz. To achieve that it is necessary to use an inductor and a capacitor. After we obtain the signal which is at desired frequency, we should amplify this signal in order to get a sufficiently large signal. To do that, we used diode and a low-pass filter as a detector. At this state we have the pure message signal. As a next step we should amplify the signal again and again to he ar the audio signal from speaker more easily.
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