Question

a 60-mv sinusoid at a frequency of 2 khz is applied to a capacitor microphone fm generator. if the deviation constant for the capacitor microphone fm generator is 400 hz/10 mv, determine: (a) the total frequency deviation. (b) the rate at which the carrier frequency is being deviated.

Answer 1

The total frequency deviation is 2400 Hz and the rate of deviation is 4.8 MHz/ms.

Step-by-step explanation:

(a) To determine the total frequency deviation, we need to multiply the frequency deviation constant by the amplitude of the sinusoid. In this case, the frequency deviation constant is 400 Hz/10 mV and the amplitude is 60 mV.

So, the total frequency deviation is 400 Hz/10 mV * 60 mV = 2400 Hz.

(b) The rate at which the carrier frequency is being deviated can be calculated by dividing the total frequency deviation by the period of the sinusoid. Since the frequency is 2 kHz, the period is 1/2 kHz = 0.5 ms.

Therefore, the rate of deviation is 2400 Hz / 0.5 ms = 4.8 MHz/ms.