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A square-law modulator for generating an AM wave relies on the useof a nonlinear device. The given figure depicts the simplest form of such amodulator. Ignoring the higher order terms, the input-output characteristics of thediode-load resistor combination in this figure are givenby: v2 (t) = a1*v1(t)+ a2* v12(t)
Where,v1(t)=Ac cos(2pfct )+m(t)Where v1(t)is the input signal, v2(t) is the output signaldeveloped across the loadresistor, and a1 , a2 are constants.
a) Determine the spectral content of the output signal. FT
b) To extract the desired AM wave from v2(t) , we need a band-passfilter. If we were to insert this filter in the figure, determine the cut off frequencies of the required filter, assuming that the message signal is limited to the band: W= f =W .
c) To avoid spectral distortion by the presence of undesiredmodulation products in v2(t), the condition W= f = 3W must be satisfied;validate this condition.
a) What is the minimum sampling frequency b) Specify the number of uniform quantization steps needed and the channel null bandwidth required, assuming that the peak signal-to-noise ratio at the receiver output needs to be at least 30 dB
The two wattmeters read 111 KW and 58 kW, respectively. Calculate the approximate power output in HP, losses and the corresponding power factor of the induction motor. There is an ammeter connected in the line "b".
What is the uncertainty in position of an electron of an atom if there is ± 2.0 x 10^7 m·sec-1 uncertainty in its velocity Use the reduced Planck's constant and electron mass = 9.109 x 10-31 kg.
write a program that would send out through the serial port an array of twenty bytes of data( need a FOR loop) stored in memory locations starting from 30H( must use a ponter) with even parity added as the ninth bit.( skip baud rate).
The open circuit voltage of the battery is 1.493 V. When a 100 resistor is connected across it, its measured voltage is 1.356V. Find its approximate Thevenin resistance and draw a model for the battery.
When a 0.900kg mass oscillates on an ideal spring, the frequency is 1.49Hz . A)What will the frequency be if 0.300kg are added to the original mass. Try to solve this problem without finding the force constant of the spring.
a sample of 0 385 gram of cus was formed by heating a mixture containing 0.318 gram of copper and 1.00 gram of sulfure according to the reaction , Cu + S ---> CuS. A) is copper or sulfer the limiting reactant B) calculate the theoretical and the pe..
A batch process which involves filling a tank with liquid, mixing the liquid and draining the tank, is automated with a PLC. The specific sequence of events is as follows
induction cooking based on power electronic is estimated to be 80 percent efficient compared to 55 percent for conventional electric cooking . if an average home consumes 2 kw-hrs daily using conventional electric cooking.
the voltage across an element is 12e^-2t V. the current entering the positive terminal of the element is 2e^-2t A. Find the energy absorbed by the element in 1.5 seconds starting from t =0.
A three-phase, four-pole, 50-hp, 480-V, 60-Hz, Y-connected induction motor has the following parameters per phase: r1 = 0.10 , x1 = 0.35 , r2' = 0.12 , x2' = 0.40 . It is known that the stator core losses amount to 1200 W and the rotational lo..
a 60-kHz sinusoidal signal is applied to an amplifier with a gain of k=2. the circuit is built with an lm741 opamp with power supplies +-13V. find the largest amplitude the signal may have before it is limited by slew rate constraints.
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