Use the multifunction generator for the input and use both channels of the Tektronix virtual scope to display the input and output voltages.
Create a table of your input and output voltage at dc, 250 Hz, 500Hz, 750Hz, 1kHz, 5kHz, 10kHz, 50kHz, 100kHz. Measure additional frequency points in order to get a nice set of data for the drop off. Be sure to capture several screenshots of the Tektronix virtual scope.
Given the output voltage at dc, what is the voltage 3dB down? In other words, what is the output voltage at the 3dB point? You should calculate this.
Using your simulation, change the frequency of the input voltage until the output voltage is that associated with your 3dB point. What is the frequency of the signal? That is your critical frequency. Take a screenshot of the scope. Add these measurements to your table. Also, put in your report this frequency. What is this frequency called?
Create a plot of your data (you can do this easily in Excel) and copy and paste the plot into your report.
Questions:
You are taking a measurement of a signal from a sensor with high frequency noise. In...
Problem 4: Design a first-order, strictly causal, low-pass DT filter to recover a low frequency sensor signal, corrupted by high frequency noise. The signal can contain frequencies up to 10HZ and the noise has frequencies above IkHz. The sampling frequency is 20kHz and you may assume that there is no aliasing. If the highest distortion allowed for the signal is 1% in amplitude, what is the worst-case attenuation of the noise signal? Problem 4: Design a first-order, strictly causal, low-pass...
An analog signal, bandlimited to 10 Hz is corrupted by high-frequency noise. The spectrum of the noise is from 30 Hz to 50 Hz. The noisy analog signal is sampled at 70 Hz. A digital lowpass filter is to be designed so as to remove the noise from the signal. For the filter design problem, what would you choose for the desired frequency response D(?)? Sketch the function for 0 ? ? ? ? where ? is normalized frequency (radians/sample)....
Problem 3: a) For the inverting amplifier designed using low noise amplifier AD743 shown on the bottom of the page with Ri=10kOhm and Rf=220kOhm, what should be the value of the resistor connected to the non-inverting input (R2) to minimize the output offset due to input bias current? b.) Even if the R2 value you calculated is used, could there be an output offset due to a difference between the two input bias currents? What is the maximum value of...
Simulation For each filter mentioned in the following cases, first simulate the circuit using Multisim. You can get a plot of the transfer function that is called the Bode plot. From the right toolbar, select "Bode Plotter". Change initial (I) and final (F) frequencies to 1Hz and 200 KHz, respectively. Use a Voltage AC source as the input signal. You do not need to change any parameter from voltage AC source. Connect "Bode Plotter" to input and output of your...
Prelab Preparation: For the RC circuit shown in Figure 1, derive the modeling equation relating the output volta ge Vout to the input voltage vin. What is the transfer function? What is the time constant of the system? Vout Figure 1: RC Circuit What is the analytical step response solution in terms of vin, Rand C? For assumed values of R 1 K, and C 6.8 uF, perform a simulation using Matlab/Simulink assuming an input square wave signal of 5Vpp,...
Solve parts a, b, c, and d 2. Design a differentiator circuit with an input signal that varies in frequency from 100Hz to 1KHz. Follow the differentiator guideline procedure. Select the capacitor value to be 0.1uf. Use the differentiator schematic shown on the next page. a. Draw the complete circuit showing values being used +s b. Write the expression for Vo. c. If a sine wave of 20mvp at a frequency of 1khz is applied to the input circuit. With...
For each filter mentioned in the following cases, first simulate the circuit using Multisim. You can get a plot of the transfer function that is called the Bode plot. From the right toolbar, select "Bode Plotter". Change initial (I) and final (F frequencies to 1Hz and 200 KHz, respectively. Use a Voltage AC source as the input signal. You do not need to change any parameter from voltage AC source Connect "Bode Plotter" to input and output of your circuit...
Vout TL074 10kS2 10 mH Figure 2. LC bandpass resonant filter 4. In Part 2 of this lab, you will construct a "resonant" LC bandpass filter (Fig. 2). The filter will only allow signals at the resonant frequency to pass through. For example, if you input a 1kHz square wave into a 5kHz resonant bandpass filter, the resulting output will be a sinusoid at 5kHz. From Prelab Part 1, we know that a square wave can be represented as an...
Part I: Black Box A Design your first black box adhering to the following specifications A. Input Signal to Black Box A 1. A 1 kHz cosine wave with amplitude of 1V. B. Output Signal from Black Box A 1. A 1 kHz sine wave with amplitude of Hint: Use an ideal op-amp C. Explain your design process. What type of circuit did you design? Discuss D. Why did vou use an op-amp? Could another component be used instead? Why...
Recall the problem from lecture iavolving an information signal betweea (-100, 100) Iz and a noise signal with positive spectrum between (500,700) Hz and negative spectrum between (-700-500) Hz. a) Suppose we want the reconstructed signal to equal the information signal. Suppose also that we would like to VIOLATE the Syquist criterion. If we can use a reconstruction ilter different than the ideal lowpass filter considered ia lecture, then find the minimum sampling frequency which violates Nyquist but still gives...