This is a " crystal radio ", an AM radio receiver without an amplifier. The raw antenna signal is shown in the first slot in the lower left corner. The inductor and capacitor C1 are tuned to 3 kHz, the frequency shown in the lower right corner as “res.f”. This picks up the carrier wave, shown in the middle slot of the oscilloscope. A diode is used to rectify it, and capacitor C2 smooths it out, generating the broadcast signal in the last slot of the oscilloscope (which in this example is a sine wave with a frequency of 12 Hz). By experimenting with the capacitance value of C1, you can select two other “stations” at 2.71 kHz and 2.43 kHz.
This page is a utility for simulating детектор am online with specified initial values.







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