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Consider a stereo speaker enclousure containing two speakers- a "woofer" to handle low frequency sounds and a "tweeter" to handle the high frequency ones as shown below.
A) The woofer can be modeled as a series R-L low pass filter. Suppose that a given woofer has an inductance of 750 micron Hertz and a resistance of 4 Ohms. At what frequncy (in Hertz) does its frequncy response drop by 3dB ?
B) To prevent the tweeter from accepting too much current at low frequencies and distorting the overall sound, speaker designers employ a capacitor placed in series with the tweeter, as shown in the figure. This is called a "Crossover circuit" since the idea is to set the 3dB frequncy of the tweeter to match the 3dB frequncy of the woofer (I.e. the Bode plots "crossover" each other.) Suppose that the tweeter behaves like an 8 Ohm resistor; what value of C will set the 3 dB frequency of the tweeter to the value from part(a)?
The receiver uses a 10.7 MHz IF. For cost, power, weight and size reasons, it is desirable to use a single clock oscillator that will provide the frequency reference for the synthesizer, as well as providing the clock for data.
RC ciruit= Current course (3u(-t) A) in parrallel to 6k ohm resistor and 5uF cap. Determine the instantaneous power absorbed by the resistor at t=(0); 30ms; and 90ms.
A transmission line with no loss, with Z0= 60 ohms, is operated at 60MHz. The velocity on the line is c. The line is soldered to a ground connection at z=0. Find the input impedance into this line at z= -1.25 meters
Analysis of discrete time waveforms in z domain, A discrete time domain signal x(n) - u(n) - u(n-10) is decomposed and plotted. It is then examined in the z domian by appropriate transformation and algebraic manipulation.
BJT Circuit Configurations Compare the input and output impedance for each configuration. Compare the voltage gain and current gain for each configuration.
A recording trace r(t) is definedas r(t) = s(t) + n(t), where s(t) =10sin(20?t) (i.e., a 10 Hz sine wave, given f= 2f) is the signal and n(t) = sin(120t) (i.e., the 60 Hz electromagnetic noise) the noise.
Build a home security system circuit using this program. The system must include 2 door sensors, 3 window sensors, 2 smoke detectors, 2 water leak sensors, and 2 motion detectors.
steam flows through a turbine one inlet and two exits with know condition at the steady state ( hints: h1=3231KJ/kg, h2=2812 KJ/kg , specific volume (v)= 0.0994 m^3/kg , at p= 30 bars,v=0.4045m^3/kg, at p=5 bars, no potential and kinetic energy ch..
HCI is a polar molecule, with a dipole moment of 3.44 X 10^-30 [C.m] per molecule. If it is known that the molecular bond distance is 0.136[nm], find the magnitude of the net displaced charge in each molecule.
draw out a schematic that implements a 3-bit XOR gate, but consisting of only 2-bit NAND gates. Your schematic should have from 8-10 NAND gates, but NO other logic function such as OR, AND, INV gates can be in your final design.
A signal is modulated by BPSK and transmitted over an AWGN channel. At the receiver, the bit error rate performance is 0.001
1. What is the effect of sampling at a higher rate on the error performance of a digital modulation scheme 2. Suppose 16QAM was the modulation scheme used for this lab; would the error performance
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