In FM demodulation, which circuit converts frequency variations into a voltage?

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Multiple Choice

In FM demodulation, which circuit converts frequency variations into a voltage?

In FM demodulation, the goal is to turn changes in the carrier’s frequency into a voltage that represents the audio signal. A frequency discriminator is designed for this purpose: its output voltage is proportional to the instantaneous frequency deviation from the center frequency, effectively converting frequency variations into a usable electrical signal. This is different from detecting amplitude (which is what AM detectors do), boosting the audio (an audio amplifier stage), or removing noise (a filtering stage). So the circuit that performs this frequency-to-voltage conversion is the frequency discriminator.

In FM demodulation, the goal is to turn changes in the carrier’s frequency into a voltage that represents the audio signal. A frequency discriminator is designed for this purpose: its output voltage is proportional to the instantaneous frequency deviation from the center frequency, effectively converting frequency variations into a usable electrical signal. This is different from detecting amplitude (which is what AM detectors do), boosting the audio (an audio amplifier stage), or removing noise (a filtering stage). So the circuit that performs this frequency-to-voltage conversion is the frequency discriminator.

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