Explore BrainMass

Electrical Engineering

State Space Equation

For the given circuit diagram, select the state variables as a subset of nodal current and loop voltage. Also determine the state space equation and transfer function of the circuit. Please look at the attached file for further details. Kindly give a detailed step by step solution.

Laplace transform, Steady-state voltage

For the circuit in attached image, a) Find the Laplace voltage Vout(s). b) Find the inverse Laplace Transform of the voltage. c) Find the steady-state voltage. Please show full work with explanations.

Laplace Transform: Example

Please give step by step answers with explanations, for the problems in the attached document. I have done the problems but want to make certain if I am in the right direction and learn where I have gone wrong.

Laplace Transformations and Inverse Laplace Transformations

1. Find the Laplace transform of 6 cos t + 2e −3t . 2. Find the Laplace transform of 2 cosh t + 2t 3. 3. Find the Laplace transform of 2te −3t. 4. Find the inverse Laplace transform of s/s+2. 5. Find the inverse Laplace transform of 1/s+5. 6. Find the inverse Laplace transform of 1/( s + 5 ) ( s 2 + 1). 7.


Two Electric Dipoles denoted by p1 and p2, p1=2*10^-29 c-m in the direction of z @(x,y,z)=(0,0,0) p2=2*10^-29 c-m in the direction of y @(x,y,z)=(0,5*10^-10 meters,5*10^-10 meters) determine potential V @ (x,y,z)=(0,5*10^-10 meters,0) (x,y,z)=(0,0,5*10^-10 meters)

555 Timer Astable Multivibrator

Fill in the blanks. In order to increase the frequency of operation of the 555-type astable multivibrator, you must _________________ the value of the timing capacitor, or you can _____________ the value of either or both of the timing resistors.

What is the voltage gain of the middle stage amplifier?

I have attached a file that contains the schematic. 1) What is the voltage gain of the middle stage? 2) Describe the main function/advantage provided by each stage used in this amplifier. 3) What would be the effects, if a bypass capacitor were added across R(E2)?

Estimate the Ron of the Switch.

Refer to the attached figure. Suppose that the input sine wave has amplitude 5Vpp and the scope measures an output amplitude of 45mVpp. Estimate the Ron of the switch. (Note that when the switch is "ON", the output is "OFF"; don't confuse the two.)

Schmitt Trigger

Use the approximate output voltage levels to predict the switching thresholds (the input voltage levels that cause a switching of the output) of Schmitt trigger. Please see the attached files for further details.

Output voltage in Amps

Consider the circuit in attached figure L9.12. Suppose that the voltage at the V+ input pin of the op-amp is +5VDC. What will the output voltage out be if the input voltage is in=3V? What will the output voltage out be if the input voltage is in=7V? Op amps are a new concept to me so i need help understanding how they behav

Peak to peak triangle wave amplitude at the output

I am having a hard time understanding the behavior of op-amps. Refer to attached figure L9.4. Predict the peak-to-peak triangle wave amplitude at the output that would result from a 2Vpp 500 Hz square wave input.

Op-Amps and ICs

Please see the attachment for referred figures. 1. The midrange open gain of a certain op-amp is 100,000. If the open loop critical frequency is 75 Hz, what is the open loop gain at 1 KHz? 2. A certain op-amp has three internal amplifier stages with the following gains and critical frequencies: A1 = 50 dB at f1 = 1000Hz, A

Chip Design: Composite Mask Yield

Consider a chip design using 10 mask levels. Suppose that each mask can be made with 98% yield. Determine the composite mask yield for the set of 10 masks. Would the processed chip yield be lower or higher than this composite yield? If your results are inconclusive, explain the reason.

Z-Transform Discrete-Time Signals

Attached are three problems that I am working. Any assistance would be greatly appreciated. For a discrete-time signal x[n] with the z-Transform: X(z) = z ________________________________________8z2-2z-1 find the z-Transform, V(z) for the signal v[n] = e3nx[n]. See attached for the rest of the

Computing DTFT

Having problems working out DTFT properly. Attached is 5 problems. Request assistance with these and if possible short narrative to each step to help me understand better. 1. Compute the DTFT of the discrete-time signal shown in the Figure below. 2. For a discrete-time signal x[n] with the DTFT where b is an arbi

Porblems in Electrical Engineering

Representative problems: 1. A function is continuous but its first derivative has a finite discontinuity at the origin. What is your estimate of the rolloff rate? 2. A system is characterized by a transfer function H(s) = 1 / s+5 . What is the natural response of the circuit? 3. If a function is even, then its Fourier tran

Simple Capacitor Problems

(a) A conducting sheet of material (see attachment 'a') has a cross-sectional area (l x w) of 10mm x 20 mm. The material has a resistivity of 103 Ω m. Calculate the thickness, t, of the material required to give a resistance of 5k Ω. (b) A capacitor is formed by two parallel metal plates separated by a dielectr

Finish the state graph for a moore network......

Help needed: I don't understand the concept so i need detailed explanation please. I have the solution but don't understand how to approach it. How would the values change if it were a mealy network? A file has been attached explaining the problem.

The Laplace Transform and the Transfer Function Representation

1. Calculate the Laplace transform of exp(-10t) x u(t) 2. Calculate the convolution of exp(-t) and sin(t) using (a) the Laplace transform (b) direct integration 3. Compute the inverse transform of (3s^2 + 4s + 1) / (s^4 + 3s^3 +3s^2+2s) 4. Use Laplace transform to calculate the solution to the ODE y"+6y'+8y=u(t) y

Effects of Biasing Current and Offset Voltage to Op-Amps

The circuit to the problem is a non-inverting amplifier with a resistive-network feedback. The circuit is assumed to be ideal, with the exception of the effect of biasing current and offset voltage. The problem is: what is the output error voltage produced by the biasing current and the offset voltage? This solution will h

Op Amp Problem

Assume the following op-amp is ideal except for having a finite gain equal to (10^7)/(s + 10) and a slew rate of 0.02V/us. The input to the amplifier is an ordinary music signal with frequency range between 10 radian/sec to 3000 radian/sec and a maximum amplitude of 1V. Do you think the input signal will pass through the amplifi

Fourier Transform of a Square Wave

A square pulse of height H extends from . Find its Fourier transform. The given function is called a "rectangle function" and it is defined as x(t)= H* rect(t/A). This function is also called the "unit gate function".

Commercial Airplane C++

Write a program can be used to assign seat for a commercial airplane. The airplane has 13 rows and 6 seats in each row. Rows 1 and 2 are first class, rows 3 through 7 are business class and rows 8 through 13 are economy class. See the attached file.

Food survey C++

A cafeteria wants to determine how students rate each food item. The cafeteria requires an application that surveys the student's opinion of various food items, rating each item as "like" or "dislike". The application is to use a two-dimensional array to hold counters for each category in the survey. The application will prompt

Maximum number of telephones supported by an end office

Consider a simple telephone network consisting of two end offices and one intermediate switch with a 1-MHz full-duplex trunk between each end office and the intermediate switch. The average telephone is used to make four calls per 8-hour workday, with a mean call duration of six minutes. Ten percent of the calls are long distanc

Sample Question: Control Systems

See the attachment. 1. What is the phase margin and gain margin? A system has a loop function: A) P.M.= 32.5 degrees and G.M.=16.47 dB. B) P.M.= 30.2 degrees and G.M.=15.67 dB. C) P.M.= 31.8 degrees and G.M.=16.57 dB. D) P.M.= 32.3 degrees and G.M.=16.67 dB. 2. The loop function of a unity feedback system is:

Control Systems using Matlab to Obtain Nyquist plot

1) G(s) = Use Matlab and obtain Nyquist Plot 2) G(s) = Kv1=0.325 Kv2=0.45 Note: K does not equal Kv Determine the phase margin, gain margin, and closed-loop bandwidth for each case. Determine these both graphically, from the appropriate bode plots, and using the Matlab functions margin and bandwidth

Transmission schemes and Time sequence diagrams

. Calculate the overhead associated with the following transmission schemes: a. Asynchronous transmission; 8 data bits, 1 start bit, 1 stop bit b. Asynchronous transmission; 7 data bits, 1 start bit, 1 stop bit c. Asynchronous transmission; 7 data bits, 2 start bits, 1 stop bit, 4 bit FCS d. Synchronous transmission; 100