6. Does PPM contain derivative of modulating signal compared to PWM?
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- 4. Signal conditioning element basically takes the output of the sensing element and converts it into a form more suitable for further processing, usually in the form of a DC voltage, DC current or variable frequency AC voltage. The output of the sensing element is usually too small to operate an indicator or a recorder. Therefore, it is suitably processed and modified in the signal conditioning element so as to obtain the output in the desired form that is amplify the signal and filtering the unwanted signal. i. Describe the aliasing phenomenon. ii. Suggest a solution to minimize the effect of aliasing.A sinusoidal signal of 2 kHz frequency is applied at the input of a delta modulator with a step size of 0.1 volt. The sampling rate of the delta modulator is 20000 samples per second. What will be the maximum amplitude of the sinusoidal signal if there is no slope overload distortion?In Steady-State Operation o f Buck DC-DC Converter Explain how the switching frequency component is eliminated by the output filter network.
- A certain counting type 12 bit ADC operates with FSR = 0 to 10 V and clock frequency folk = 1 MHz. Determine the dynamic range of the converter, conversion time, conversion rate and Nyquist frequency of the converter.6. Consider the electrical circuits shown in figure a.) and b.). For each circuit determine the transfer function C/2 C12 2R 2R (a) R (b)Two low pass signals, each band limited 4 KHz, are to be time multiplexed into a single channel using PAM. Each signal is impulse sampled at a rate 10 KHz. The time multiplexed signal waveform is filtered by an ideal LPF before transmission. (a) What is minimum clock frequency of the system? (b) What is the minimum cut off frequency of the LPF? Ans. (a) 20KHz (b) 10KHz
- Identify the given statement. FM and PM demodulators can actually reduce noise and increase the signal-to-noise ratio during the demodulation process by using limiters. This is known as the capture effect. Select your answer. The statement has no fixed information. The statement is false. The statement is true. The statement is a case-to-case basis.B- An rate. analog signal having single frequency as 3 kHz is sampled with 5 kHz S Describe its frequency spectrum. What will be the output if the sampled signals a passed through a low-pass filter having cutoff frequency at 2.5 kHz? signal. are sent in the analogA pulse width modulated output is configured with an 40MHz clock, a prescaler of 80 and a count register of 1000. What is the frequency of the PWM signal?