Amateur Extra › E7 Practical Circuits › E7H06
E7H06
Which of these functions can be performed by a phase-locked loop?
Pick an answer to check it.
Answer: B. Frequency synthesis and FM demodulation
A PLL can lock a VCO to multiples of a reference for frequency synthesis. It can also demodulate FM, since the VCO control voltage tracks the incoming frequency.
Tip: PLL: synthesizers and FM detectors.