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1. How do you distinguish between positive and negative logic systems? Prove that an OR gate in a positive logic system is an AND gate in a negative logic system.
2. Why are NAND and NOR gates called universal gates? Justify your answer with the help of examples.
Given two NPN BJTs having β= 100 and ro = 100 Kohm. Using a single 5V dc power supply, design a differential pair amplifier having 1mA bias current in each transistor. What is its maximum gain for linear operation (balanced input, unbalanced outpu..
The carrier wave of frequency 100 MHz is frequency modulated by a sinusoidal wave of amplitude 20 V and frequency 100 kHz. The frequency sensitivity kf = 25 kHz/V. 1. Write expression for FM modulated wave s(t) if Ac = 1 V.
To what supply is it connected? To what circuit node is the additional resistor connected? What is the required value of R?
Determine the impulse response of the filter matched to the pulse shape shown in the accompanying figure.- Sketch the output of the matched filter.
consider a communication channel corrupted by noise. let X bethe value of the transmitted signal and Y be the value of thereceived signal. assume that the conditional density of Y given(X=x) is Guassian, that is, fy/x(y/x)=1/√2πσ*σexp(-(y-x)squ..
Calculate the length and the distance coved by the lightening arrestor to be installed above 20 feet height industrial building.
A 50 ohmlossless air transmission line is terminated in a load impedance ZL = 12.5 + j20 ohm. Find the following using a Smith Chart: the load admittance YL. the closest distance to the load plane where the normalized admittance on the line is 1 + j..
a. What are the effective bandwidths of the two devices?
a signal alternates abruptly between -1V and +2V with a duty cycle d. sketch a waveform, and find its full cycle average if d=25%, 50%, 75% for what value of d is the full wave average 0
The reactance in ohms of a capacitor at frequency of 500 Hz is 145 ohms; what is the value of the capacitor in uF. The reactance in ohms of a capacitor of 10 uF at a FREQUENCY of 200 Hz is
A certain two-terminal circuit has an open-circuit voltage of 9V . When a R = 225-r load is attached, the voltage across the load is 7V . Determine the Thevenin resistance for the circuit.
Let x(n) be the input signal to a discrete-time filter with impulse response hi(n) and let yi(n) be the corresponding output. These sequences are written such that the first value islocated at instant n=0. (a) Plot x(n) and y1(n).
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