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Design and Analysis: The simple high-pass and low-pass filters shown to the right have been analyzed in class. The transfer functions are H-HP(f) = j fRC / ( 1 + j fRC ) and H-LP(f) = 1 / ( 1 + j fRC ). In either case the -3dB frequencies are F-3DB = 1/ (2 f RC). These are 300 Hz for the HP and 20 Khz for the LP. To choose components you need to make some arbitrary choices. A good way is to consider the value of the resistors.
For typical analog circuits resistors shouldn't be too small because they will draw too much current, nor too large because they will cause too much noise. A value of 10 K is often a good compromise. Here we need a larger RC product for the HP so we'll use a 100 K resistor there, and 10 K for the LP.(a) Calculate the capacitors needed. Plot the transfer functions for both circuits using the Matlab code on the web site and confirmthat your choices are correct. Make a hard copy.(b) Calculate the transfer function for the cascade of the HP and LP (i.e. the direct connection shown above). Modify the Matlab code as indicated in the code and plot this transfer function too. You will see that it falls significantly below the idea product of the HP and LP. Make a hard copy showing two traces: the product of the HP and LP; and the transfer function of the direct connection. Save your Matlab code on a USB drive and bring it to the lab because you will want to rerun it with the actual R and C values that you use in the lab.
Refer to the Wheatstone Bridge diagram. If R1=1ohm, R2=111ohm, Runknown= 1ohm, R3 is set at 1Kohm, and the battery is 9V:What is the current flowing through the galvanometerohm Use 60ohm for the internal galvanometer resistance in calculations.
When making an impedance diagram, does inductive reactance go on the positive Y-axis, or the negative Y-axis. How about capacitive reactance. How do these graphical representations relate to the phase angels of the reactances.
Create a program using AsmIDE, which utilizes the Fox 11 68HC11 microcontroller board: Speech timer where max time is 5 minutes Use the switches for:
Determine the relative probability of finding the electron at the distance (a) 12 A beyond the barrier, and (b) 48 A beyond the barrier, compared to the probability of finding the incident particle at the barriers edge. Plot the wave function for ..
Three identical constant pitch thin helical coils (having a pitch 3mm, axial length 450mm and inner diameter 20mm) are positioned along a common axis. The axial distance between the first and the second is 55mm
a. Sketch the spectrum of the original signal and the sampled signal from 0 kHz and 25 kHz. b. Sketch the recovered analog signal spectrum if an ideal lowpass filter with a cutoff frequency of 4 kHz is used to filter the sampled signal.
Consider the waveform equation: a. What is the frequency of the waveform (in Hz) b. What is the voltage Vx at a time t = 1.5 ms c. What is the voltage Vx at a time t = 3 ms d. What is the voltage Vx at a time t = 4.5 ms
The magnitude of the current in a RL circuit decreases at a rate of 2000 A/s at t=0 and 100 A/s at t=.2s. At what time has the energy stored in the inductor decreased 1 percent of its intial value.
A sinusoidal voltage has a maximum value of 100V, and the value is 10V at t=0. The period is T=1ms. Determine v(t)
An LED is rated at VF = 1.6 Volts to 2.0 Volts at IF = 20 mA. What value of series resistance is needed to limit the LED current to 20 mA when this LED is connected to a 32 Volts peak source
Rated voltage is applied to the low voltage winding and the high voltage winding is open-circuited. Under this condition, the current into the low voltage winding is 2.4 A, and the power taken from the 2400 V source is 3456 W.
For a complex load of 100 + 25 j ohm. find the matching circuit consist of ideal capacitor and/or inductor to match the load to 50 ohm impedance at 500MHz. The solution should include circuit schematic and values of each component
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