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Design a frequency divider cicuit that will produce the following three ouput signal frequencies: 1 MHz. 800 kHz, and 100 kHz. Use 74HC160 and 74HC161 counter chips and any necessary gates. The input frequency is 12 MHz.
Design a Moore sequential machine that has one input X and one output Y. Whenever X changes from 0 to 1, Y should become 1 for two clock cycles and then return to 0 - even if X is still 1. For example, given an input sequence X=0110101001.
Suppose that a 5 Mbps link is being shared by a number of users. Each user alternates between period of activity during which the user transmits at rate 1 Mbps and periods of silence, when the user does not transmit.
1) Which has greater efficiency DC Machine operating as MOTOR or GENERATOR 2) What happens when an AC supply is given to a DC Machine
The torque produced by an external magnetic field is torque = D[5i,-3j] where D is a positive constant, and for this orientation of the loop the magnetic potential energy U = -mu cross B is negative. The magnitude of the magnetic field is 14D/IA
A random signal X can be observed only in the presence of independent addictive noise N. The observed quantity is Y = X + N.The joint probability density function of X and Y is f(x,y) = K exp[-(x2 + y2 + 4xy)] all x and y
a) What current will flow in the diode if the forward voltage bias is raised to 0.8V b) What current will flow in the diode if the forward voltage bias is lowered to 0.6V c) What change in forward bias voltage will increase the diode current by a ..
The nameplate on a 25-MVA, 60-Hz single-phase transformer indicates that it has a voltage rating of 8.0-kV:78-kV. A short-circuit test from the high-voltage side (low-voltage winding short circuited) gives readings of 4.53 kV, 321 A, and 77.5 kW.
given a sequence x(n), where x(0) = 4, x(1) =3, x(2) = 2, and x(3) =1 with the last two data zero-padded as x(4) =0, and x(5) = 0, evaluate its DFT x(k)
Compensation occurs when a semiconductor is doped with both donor and acceptor dopants. Using the fact that n0p0=ni^2 (mass action law) and p0+Nd=n0+Na (charge neutrality assuming all dopants are ionized)
An audio amplifier system, using a noinverting op-amp circuit, needs to have a small-signal bandwidth of 20kHz. The open-loop low-frequency voltage gain of the op-amp is 10^5 and the unity -gain bandwidth is 1 MHz.
1-phase 2-winding transformer is rated 30 kVA, 360/90 V, 60 Hz. A source connected to the 360-V winding supplies an impedance load connected to the 120-V winding. The load absorbs 15 kVA at 0.8 p.f.
Given the excitations x[n] and the impulse responses h[n], find closed form expressions for and graph the system responses y[n] x[n] = u[n], h[n]=(4/7)δ[n]-(-3/4)nu[n]
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