vibhavan vibhavan

30-12-2023
Engineering

contestada

Determine the change in DC control voltage Vc during lock, if input signal frequency, f = 20 KHz, the free running frequency is 21 KHz and the V/F transfer coefficient of VCO is 4 KHz.

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noahmolg noahmolg

30-12-2023

the change in DC control voltage Vc during lock is given by the formula:
ΔVc=Δf/K0

where Δf is the difference between the input signal frequency and the free running frequency, and K0 is the voltage to frequency transfer coefficient of VCO.
Plugging in the given values, we get:

ΔVc=20−21/4=−0.25V

The change in DC control voltage Vc during lock is -0.25 V

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