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Finding peak amplitude, frequency, and spectrum shape
b. A signal generator outputs a unipolar square wave with a period of 0.50 ms and an amplitude of 2.0 V. The output of the generator is passed through an ideal band pass filter that has a pass band from 1 kHz to 9.0 kHz. List the peak amplitude (in volts) and frequency (in kHz) of each wave that is present at the filter output.
c. The signal generator output in part (b) is changed to a rectangular pulse train in which the period is still 0.50 ms but the pulse length is 0.125 ms. What frequencies would be present at the filter output now?
d. The waveform output by the signal generator in part (c) is changed so that the rectangular pulses have the same width but are no longer periodic. The pulses occur at random intervals of time. What would be the shape of the spectrum displayed on the screen of a spectrum analyzer connected to the filter output? Are there any frequencies at which the spectrum has a value of zero? If so, list those frequencies.
Explain the operation of sequential logic devices and evaluate the output waveform in relation to the clock for QA, QB and QC in the subsequent circuit and show the binary sequence represented by these waveforms
A radio receiver for the HF band covers the frequency range 2 MHz to 30 MHz. The first IF frequency is 3.0 MHz and the local oscillator is above the received signal frequency.
The aim of this experiment is to develop a bipolar transistor amplifier with a voltage gain of minus 25. The amplifier must accept input signals from a source impedance of 1 kW and provide an undistorted output amplitude of 5 V when driving a 560..
Assume that capacitor is completely discharged when t
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Hand calculate the expression for the voltage and current of the capacitor and plot these equations by using MATLAB and calculate the time constants of each circuit and point out this time constants at your voltage graphs.
Ziegler-Nichols Open Loop Tuning Often, when working with a faster loop, many people will opt only for a PI control philosophy
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What are the two possible frequencies to which the local oscillator could be set? What bandwidth should the 10.7 MHz IF amplifier have?
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