# Tagged Questions

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### 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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### Power factor correction in a simple phasor circuit

I've been having a bit of trouble with a relatively simple power factor correction problem involving a simple circuit in the frequency domain ($f=50\,\text{Hz},\omega=2\pi f=100\pi\,\text{rad/s}$). ...
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### 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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### 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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### 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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### 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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### 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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### 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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### 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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### 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 ...
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 $S_2(t) = -\sqrt{\frac{2E}{T}sin\ t}$ ...