Explanation: Free running multivibrator operates at a frequency which is determined by an external tuning capacitor and a resistor. On applying a dc control voltage the frequency can be shifted on either sides. This frequency deviation is directly proportional to the dc control voltage and hence it is called as ‘voltage controlled oscillator’. 2. The output voltage of phase detector is
A. Phase voltage
B. Free running voltage
C. Error voltage
D. None of the mentioned
Answer:A
Explanation: Free running multivibrator operates at a frequency which is determined by an external tuning capacitor and a resistor. On applying a dc control voltage the frequency can be shifted on either sides. This frequency deviation is directly proportional to the dc control voltage and hence it is called as ‘voltage controlled oscillator’. 2. The output voltage of phase detector is
A. Phase voltage B. Free running voltage C. Error voltage D. None of the mentioned
Explanation: The phase detector compares the input frequency with the feedback frequency and produces output dc voltage called as error voltage. 3. At which state the phase-locked loop tracks any change in input frequency?