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1answer
29 views

Truth table for incrementing and decrementing 4-bit numbers

A3, A2, A1 and A0 are the bits of the number which needs to be incremented/dectremented. The first column with F bits is the incremented A number and the second column with F bitsis the decremented A ...
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1answer
41 views

Implementing a simple two door security system

This is a very simple task and I understand most of it (already has a solution), but there are some things which I need clarification for. The problem is: There are two doors (one behind the other), ...
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1answer
38 views

Help me implement the crossroad traffic lights using multiplexers 4/1?

I came across this problem and it has a solution and everything, but I don't understand it. Here's the illustration: So, the picture shows a crossroad which has sensors along the higher-priority DC ...
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0answers
29 views

Solving a Differential Equation given no initial conditions (signals) [on hold]

I'm having some sort of difficulty on my signals homework. I am given the following problem. Where u(t) is a unit step function. For whatever reason, most of the problems assigned have no initial ...
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1answer
51 views

Voltage on coaxial line - calculation process

Compute the voltage on the end of coaxial line (\$Z_0=75~\Omega\$, \$l=100~m\$,\$\tau=5~ns/m\$) at time \$t=1.6~\mu s\$ after connecting the line to voltage source (\$U_0=6~V\$,\$R_i=0~\Omega\$), if ...
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1answer
33 views

Is this sequential function chart correct?

I have to draw the sequential function chart of a robotic arm which in the beginning of a process is in the position A.If it gets an impulse from the sensor S1 it moves to the left and for 5 seconds ...
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0answers
36 views

Using a suitable Compensator problem - Control Theory

Problem: \$\,\,\,\$ A system is described by the open loop transfer function $$\frac{k(s+2)(s+7)}{(s+5)(s^2+2s+5)}$$ Design a suitable compensator in order to have \$w_n =\sqrt{10}\,rad/s\$ and ...
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1answer
79 views

wires for for home theater system

May I use two 16 gauge insulated wire in lieu of one 14 gauge wire for speakers of a home theater system. Thicker wire is better for the quality of sound (or so do they say). So does the two 16 gauge ...
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1answer
40 views

Capacitance value - AC RC Circuit - Impedance Method

Here is the circuit: simulate this circuit – Schematic created using CircuitLab \$ V_i = \frac{8}{\sqrt 2} \angle0° V\\ V_c = \frac{6}{\sqrt 2} \angle45° V\\ R = 1000\space\Omega \$ ...
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1answer
58 views

s-Domain Analysis?

I've spent a really long time on this question but any approach I use gives me extremely messy solutions which make it impossible to convert the equations back into the time domain. This is what ...
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2answers
68 views

Help with complex power and power factor correction problem

I'm having a bit of trouble trying to understand what is being asked of me in a relatively basic circuit theory question involving complex power and power factor correction. Now, part (b) and (c) ...
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3answers
65 views

Half-wave recitifer diode (0.7v) problems

I can't seem to decide which is the correct answer for this question. An ac voltage of 5 V (peak) is applied to the circuit shown. What is the peak inverse voltage (PIV) of the diode? Silion diode ...
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0answers
34 views

State Diagram in Sequential FSM

I have a homework question that wants me to draw state diagram using Mealy approach and obtain state table. If I can understand the number of states and make sure how the diagram is constructed, I ...
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0answers
48 views

Simple way to design an electrical bug killer

I've been asked to design a device capable of killing bugs, like roaches. I have looked all over the internet for circuit designs to no avail. I was hoping someone could tell me where I could find a ...
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0answers
52 views

half wave rectifier connected to a dc motor

we have half wave rectifier connected to a dc motor load. by using a step down transformer from 8 to 1. by modalization we have the Primary Winding resistance is Rp=50 ohm and it's Lp=0.1 H the ...
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0answers
58 views

How to fit practical PID controller state equations into a state-space matrix representation (to be used for RK4 through MATLAB)?

So i need to implement an RK4 algorithm of a state-space matrix in order to convert it from continous to discrete time ( using RK4 is the specified method in the assignment Q). Diagram of the ...
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1answer
64 views

Finding equivalent capacitance part II

Here's part I! They helped me a lot. But this problem is harder so if you can tell me where, if, I went wrong. When first switch is closed, the other one's opened. And in reverse. Here's solution ...
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2answers
103 views

Finding equivalent capacitance

Sorry, for the quality, someone could do this in the editor but I think you can see what's what. That is a switch in middle. How do you find capacitance when p(switch) is closed, and how when it's ...
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1answer
65 views

BER for BPSK over AWGN Channel [closed]

A BPSK scheme operating over an AWGN channel with noise power spectral density of \$N/2\$, uses equiprobable signals \$S_1(t) = \sqrt{\frac{2E}{T} sin\ t}\$ and \$S_2(t) = -\sqrt{\frac{2E}{T}sin\ t}\$ ...