### STDM: statistical time division multiplexing

How does STDM yield more efficient use of the bandwidth

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How does STDM yield more efficient use of the bandwidth

How many T-1 lines are needed to make up one OC12 line? Need to see the calculated out to understand this

The parameters of the transistor are Beta=100 and Va=100V. Find the DC voltages at the base and emittter terminals. See attachment for circuit.

Redesign the circuit showin using Vcc=9V such that the voltage drop across Rc = 1/3VCC and the voltage drop across Re=1/3VCC. Assume Bf=100. the quiescent collector current is to be IcQ=.4mA and the current through R1 and R2 should be approximately .2Icq. Replace each transistor with the closest standard value. What is the v

Please help with the following problem. The DC load line and Q point of the circuit are shown next to the circuit. For the transistor, Beta=120. Find Re, R1, and R2 such that the circuit is bias stable. Is it valid for me to do a KVL around the C-E loop using ic=4.8ma and vce=6v (ie=ic (b+1/b)) to find RE? And then get

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A full-wave bridge rectifier circuit with a 1-kohms load operates from a 120-V (rms) 60-Hz household supply through a 10-to-1 step-down transformer having a single secondary winding. It uses four diodes, each of which can be modeled to have a 0.7-V drop for any current. What is the fraction of a cycle that each diode conducts? W

See attachment for better symbol representation. 1. Find and sketch the spectrum of the following signal. x(t) = cos(t) + cos (2t)*cos(3t) (Express the trigonometric functions in terms of complex exponentials using one of Euler's formulae, then perform the arithmetic (multiplication) and then express x(t) in terms of sep

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A circuit contains two devices that are connected in parallel. If the resistances of one of these devices is 12ohms and the resistance of the other device is 4ohms, the total resistance of the two devices is? (a) 0.0625 (b) 0.333 ohms (c) 3 ohms (D) 16 ohms

Use algebraic manipulation to find the expression f(x1, x2, x3) = SUM m(1,2,3,4,5,6,7). A. f = x1 + x2 + x3 B. f = x1x2x3 C. f = x1x3 + x2 D. f = x2 + xbar1 + x3

For the function, use Shannon's expansion to derive an implementation using a 2-to-1 multiplexer and any other necessary gates. Please see the attached MS Word file for the full function.

Finite State Machine A finite state machine (FSM) is either deterministic or non-deterministic. A deterministic FSM (DFSM) is a FSM with at most one transition for each symbol and state. A non-deterministic FSM (NDFSM) is a FSM whose transition function maps input symbols and states to a (possibly empty) set of next states. T

Plot the frequency response and the poles and zeroes in each case. Use a sampling frequency of one rad/sec. Compare the filter frequency responses. (See attachment for full question).

A two-port bridge connects on the end of a cable of length X m. to the end of a similar cable of length 3x/2 m. Hosts are attached at various points on the cable system, which operates as a shared-access LAN implementing the CSMA/CD protocol with a minimum frame length of 512 bits. The bridge imparts a delay in forwarding frame

Suppose a router has built up the routing table shown in Table below. The router can deliver packets directly over interfaces 0 and 1, or it can forward packets to routers R2, R3, or R4. Describe what the router does with a packet addressed to each of the following destinations (see Attachment)

The three-phase half-wave converter in figure below is operated from a three-phase wye-connected 220V, 60 Hz supply and the load resistance is R=10 ohms. If the average output voltage is 25% of the maximum possible average output voltage, calculate the delay angle (alpha). See Attached File.

An Rl load as shown in figure below is controlled by a chopper. If load resistance R=0.25 ohms, inductance L=20 mH, supply voltage Vs=600V, battery voltage E=150V, and chopping frequency F=250 Hz, determine the peak-to-peak ripple current (delta I). See Attached File.

The waveforms of the current flowing through a diode are shown in the figure below. Determine the RMS current ratings of the diode.

I don't know how to determine mean, autocorrelation and pdf. See the attached file.

What are Setup time, Hold time, Clock-to-Q delay and metastability problems

Sketch the Bode magnitude plots for the following functions: (a) T(s)=-10s/(s+20)(s+2000) (b) T(s)=10(s+10)/(s+1000) Bode plots were introduced in my second circuit analysis class, but I really didn't think it was important because it looked like an outdated tool no longer in use. Other than changing s to jw and plottin

The common-emitter circuit has an emitter bypass capacitor. (a) Derive the expression for the small-signal voltage gain Av(s)=Vo(s)/Vi(s). Write the expression in a form similar to that of equation (Av=(-Gm*Rpi*Rc)(Rs+rpi+(1+Beta)Re)*((1+s*taua)/(1+s*taub)). (b) What are the expressions for taua and taub? The circuit is

Often Netlist is generated by programs such as Cadence. However, on the rare occasions when one has to look at Hspice netlist, one should not be at a complete loss. Give a brief Hspice Netlist example that explains how to read and understand .hsp files.

Evaluate int_{0}^{infty}exp(-Ab^2)p(b)db, where b is a Rician random variable with the probability density function p(b)=2b(1+K)exp(-K-b^2(1+K))I_0(2bsqrt(K(1+K))), b>=0, p(b) = 0, b<0, where K is a constant and I_0(.) is the zero-order modified Bessel function of the first kind.

In the circuit shown (in the attachment) a ZL = 200 + j 100 Ohm load is to be matched to a 40 Ohm line, using a length, l, of lossless transmission line of characteristic impedance, Z1. Find l and Z1. Determine, in general, what type of load impedances can be matched using such a circuit.

Please help me find the impedance and the admittance matrices for each one of the two circuits in the attached file.

The frequency of the induced rotor currents in the rotor of a 60 Hz induction machine is 2 Hz. Furthermore, the fields in the air gap turn at -40 rpm with respect to the rotor. (a) Find the number of poles. (b) Find the slip of the motor. (c) Find the synchronous speed in rpm. (d) Find the motor speed in rpm. (e) Is this a