10 Questions
The multistage low-pass filter is used to remove low-frequency noise from the VCO output.
False
PWM modulation converts a digital signal into an analog signal.
False
The LM555 timer is used as a voltage comparator.
False
A monostable multivibrator is used to generate the PWM signal.
True
The purpose of PWM modulation is to convert a digital signal into an analog signal.
False
FSK demodulation process can be improved by providing a noisy input to the comparator.
False
The LM565 output may contain unwanted low-frequency components or noise.
False
The low-pass filter attenuates low-frequency components while passing high-frequency components unchanged.
False
PWM modulation involves varying the frequency of the pulses based on the audio signal amplitude.
False
The LM555 timer is illustrated in Fig. 11-4.
True
This quiz covers the experiment using the LM565 PLL as an FSK demodulator, below 500 kHz. It includes details about the phase detector, VCO, and power supply connections. Test your knowledge of PLL circuits and frequency shift keying demodulation.
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