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Design the circuit that interfaces a 2.5V 1mA LED to YourComputer.
If a system uses a 12-bit ADC, about how many decimal digits will it have?
If a system requires decimal digits of precision, what is the smallest number of bits the ADC needs to have?
If the SNR must be greater than 40 dBm, how far backed-off must the amplifier operate. Assume noise comes from a third-order intermodulation between two interferers with the same power level as the wanted signal.
Design it to give an output that is 1/3 of the supply voltage. Furthermore neither the power ratings of the resistors nor the current rating of the supply are to be exceeded. The voltage output of the divider much not change by more than 1% when l..
If the data stream is transmitted using a bandwidth of 64 kHz in an ordinary system (without spread spectrum), what is the SNR that could be tolerated without experiencing significant errors
An input signal x(t) = cosωct is sampled by an ideal sampling function with ωs= 1.5 ωc. The sampled signal is then filtered with an ideal low pass filter H(ω)= rect(ω/1,5ωc) to form an output signal y(t) a. Sketch the fourier transform of the sampl..
A charged 100- picoFarad capacitor has initial voltage across it of 10 V. A 100 kohm resistor is suddenly connected across the capacitor (at t=0) to discharge it. What is the magnitude of the instantaneous current at 20 usec
i. Find the refractive index of the dielectric medium. ii. At what angle of incidence will the incident TM wave be totally refracted into air. iii. For a TE wave incident at the angle of incidence found in part (ii) above.
Use Matlab to verify the above results and determine: a. The starting torque b. The maximum torque c. The slip at which the motor develops maximum torque d. Draw the torque-speed characteristic of the motor
The sampled signal x[n] obtained above is processed by the ideal D-to-C converters with the sampling rate (600 Hz). Obtain the representation of the continuous signal. Determine the Nyquist sampling rate such that no aliasing occurs in the sampled..
The general belief is that the system exhibits a sharp phase transition from free flowing to fully jammed, as a function of initial density of cars. The existence of this sharp transition has been cited in the scientific literature several hundred..
Space charge region how it is formed and what are the factors on which the width of this region depends
An urn contains N balls numbered 1 to N. Someone draws n balls(without replacement) from the urn, where 1
Design a decade up counter using JK flip flops. THe conter should count from 0 to 9 and back to 0, etc. Include a "COUNT" input to control the counter. THe counter will advance only if the COUNT = 1.Also include a "CARRY OUT" output.
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