Question Pool -- Category E6B
What is the name of a circuit that compares the difference of the
output from a voltage-controlled oscillator (VCO) to a frequency
standard and produces an error voltage that changes the VCO's
frequency?
-
A.
- A doubly balanced mixer
-
B.
- A phase-locked loop
-
C.
- A differential voltage amplifier
-
D.
- A variable frequency oscillator
Answer is B.
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