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Electronic Engineering

Transfer functions and steady state

1. The impulse response for a circuit is h(t)=e^(-t), t>=0. What is the response function of the circuit in the s-domain if the input is f(t)=cos(2t)? 2. The transfer function for a circuit is H(s)=1/((s+2)(s+5)). What are the poles? Is this an impulse response stable circuit? 3. The transfer function for a circuit is H(

Combinational vs. Sequential Circuits

1.23 (Combinational versus Sequential Circuits) Which of the fol¬lowing contain circuits that are likely to be combinational and which contain sequential circuits? Explain your rationale. (a) A washing machine that sequences through the soak, wash, and spin cycles for preset periods of time. (b) A circuit that divides tw

transfer function

See attached file for full problem description. Pls answer only 12.2. a) Find an expression for the transfer function H(s) = V2(s)/V1(s) for the above circuit, in terms of s, R1, R2, and C. b) suppose C = 1 uF. Determine the values for R1 and R2 so that the circuit will have a transfer function of H(s) = 5(s + 100)/s

Frequency and angular frequency, rotations per second.

Saw on internet some equations to convert from frequency in hertz to mph. Some equations need a gear ratio while others do not. I found the equation mph = circumference * RPM * 60. Now, it makes sense and if use dimensional analysis I found 1Hz = 60 RPM and 60Hz = 3600 RPM. When calculated for a diameter of a motor shaft wit

Mesh Current for circuit analysis:

See attached file for full problem description. Please solve question number 6 only. 6. Calculate all of the unknown voltages and currents in the above circuit, using either node-voltage, mesh-current, or superposition method. Mark your answers directly on a copy of circuit. In all cases, label the actual direction of curren

States Models for Systems

Find the state models for the systems. Y(s)/U(s) = (s^2 + 4s + 1)/(s+1)(s+2) Y(s)/ U(s) = (s^2 + 2s + 2)/ s(s+1)(s+3) See attached file for full problem description and better formula representation.

Current and voltage expressions of capacitor and inductor

(See attached file for full problem description) --- Problem 2. Current through 1uF capacitor is given as i(t) = 4 cos (wt) where w corresponds to the frequency of 1 MHz. What is the expression for the voltage on the capacitor? Problem 3. The same current i(t) = 4 cos (wt), at the frequency of 1 MHz, is flowing through

mesh analysis of circuit

Please only do problems 3.48, 3.49, 3.51, 3.52, 3.54, 3.57, 3.60, 3.61. OK PLEASE show all equations used, work and PLEASE do not skip steps no matter how minor. I learn by example and need to see everything also including pictures of current flow, directions, picture of how each step progressed, etc.. Please show step by s

Electrical and Electronic Principles

An ac source consists of a voltage generator and three impedance connected in a circuit shown attached: 3+j6 5-j2 ///------------///------------- | | | ///-j10---- | | 200v | -

Electrical Circuit Course Diagrams

Design a Circuit diagram and design calculations for part A: A) Design a voltage-divider circuit for a 15-V regulated power supply. The circuit must feed a 3-mA load at 9-V. Draw a circuit diagram showing the values of all components and the significant voltages and currents throughout the circuit. Your circuit should include

Three phase delta circuit

A 2400V balanced, three phase delta circuit (see attached) has phase load impedances of 40+j60 OHMS. What are IaA, IbB, and IcC? Note: That just as the current IaA shown on the attached, is the current flowing from node a to node A, the current IbB is the current flowing from node b to node B, and the current IcC is the curr

Superposition Theorem

1.1 Analyze the circuit shown in Fig. 5.1 (see attached file) and find the expected voltage across the load resistor RL. Use mesh or nodal analysis to find the expected value. 1.2 Find the load voltages Vout1 and Vout2 with one voltage alone driving the circuit in each case. Also find the net response by using the superpositi

Electrical Problems

Hi I hope you can help me with these few questions, I have made some attempts myself. On question 1 I have assumed a supply voltage of 28volts. That is If this is what the question means. The text book is HUGHES electrical and electronic technology (1) A zener diode has a reverse breakdown volt

Circuit analysis and current

A 5.1K resistor is connected between the cathode of a 6.2V zener diode and a 12V power supply. The anode of the diode is connected to 6V. Approximately how much current will flow through the diode?

Op-amp and RC circuit analysis

For the following circuit (see attachment), how do I find the Laplace transform of the transfer function V0(s)/V1(s)? Would this be considered a low or high pass filter?

Circuit Plotting

How would I plot a graph for the following RLC circuit which shows the magnitude of Z (the input impedance) as a function of frequency from 10Hz to 10KHz? See attached file for full problem description.

Circuit Analysis

Consider the given circuit; the voltage step is an "ideal" pulse going from 0V to 4V and then back to 0V; the pulse width is 5 microseconds wide. How do I find the voltage across the resistor, Vr(t) 7 microseconds after the rising edge of the input impulse?

Phase angle and margin

I'm trying to find the angles of departure and angles of arrival for an equation. In my current problem, I am looking for the angle of departure for GH=10(s+z)/s^2 (also GH(jw)=10(jw+z)/(jw^2) The angle of departure is defined as 180 degrees plus the phase angle of GH computed at the complex pole, but ignoring the contrib


A capacitor is used in the electronic flash unit of a camera. A small battery with a constant voltage of 6 V is used to charge the capacitor with a constant current of 10 microamperes. How long does it take to charge the capacitor when C = 10 microfarads? My Answer: V=6V i=10mA C=10microF Wc=1/2CV^2*(t) Wc=1/2(10^-5)6^2*(t

Closed Loop Control Systems

2. a) In this question you have to determine the closed loop transfer function and then use the characteristic equation to determine the closed loop poles (roots) of the system. Prove that the closed loop transfer function is given by: C(s)/R(s) = G(s)/(I + G(s)H(s)) b) What is the significance of the characteristic equati

Logic Circuit Question

Question: The outputs of two "NAND" gates are connected to the inputs of an "Exclusive Or" gate. Each of the "NAND" gates has one input at a logic high level, and the other input at a logic low level. What is the output of the "Exclusive Or" gate? a) Logic high b) Logic low c) Logic low, unless the output is "open collecto

Working with Electrical Grounding and Polarity

To whom it may concern, From chemistry I understand that electron flow is from negative to positive, in the external circuit. I also understand that "conventional current" flows positive to negative, and is used to solve mathamatical electricity problems and it was determined back in the day as current direction. But, if t

Nyquist, Bode Plot and Root Locus

A) Analyse the closed loop stability of the system with open loop transfer function {see attachment} i)Make a sketch of the Bode diagram and hence the full Nyquist diagram, showing all relavent details ii) If the system is unstable, state the number of closed loop right hand plane poles and comment on how you might stabili

FINFET---a type of MOSFET

The question is below. Please include where you find the resource to answer this question. Thanks. As the gate length of MOSFET transistor shrinks to nanometer scale, the operation of MOSFET is limited by fundamental physical process. One of the most severe limitation is the inability to reach complete cut-off mode for nano