Recent content by verd

Hi, So I keep making mistakes trying to find all of the equilibrium points of different simple nonlinear systems. These problems aren't difficult, it's just that I keep taking different approaches to finding the equilibrium points. Is there a methodological way to know that I have found...

How does one begin to derive the resonant frequencies of a multiple mass mass-spring system? (3-mass system) OK, so deriving this isn't a homework problem. I'd just like to know how. It's been a couple of years since I've taken a physics course. I was asked what the resonant frequencies of each...

Alright. So... Conceptually I completely understand what I'm doing. I'm just a bit confused about how, mechanically, to solve this. I basically have the following: W(w)=(1/2)[p2(w+6)+p2(w-6)] Where p2(w) is a pulse of width 2. Of course, w is omega, and the +/-6 is the shift. This is a...

You can use NAND gates to make up all of the other gates. The way I look at it is like blocks, I just put them together and cancel redundant gates when everything is assembled. I made the following to illustrate what I'm trying to say...

this one is pretty simple. You don't need to worry about K-Maps because K-Maps are for simplifying messy boolean expressions. The expression you have, Z=A'C+BC' is a very simple one. In practice, constructing a digital circuit is cheapest by implementing it using only NAND gates, so I guess...

Hey there This should be nice and simple. Here's the deal-- I was asked to design an Op-Amp Integrator circuit. For a 500Hz square wave input signal that oscillates from +/-0.5v, I was asked to design for a triangle wave output which oscillates from 0 to -5 volts. I designed the circuit...

Thank you. I understand now what you did any why. However, now I'm having difficulty coming up with a non-zero vector through that 3x3 matrix. So I don't see how to find a unique nonzero solution-- I see why I can't just solve for one. Any pointers?Thanks again. This is my matrix: 1 -1 2 2...

Thanks for responding... The first recommendation with choosing an 'a' sounds familiar. However, I don't exactly understand how that determines a vector that is perpendicular to the subspace formed by the three vectors. I'm a bit lost on the concept... Having a hard time visualizing the...

I'm studying for a linear algebra final, and I'm looking over an old final our prof gave us and I've come across something I don't remember ever hearing anything about... Here's the problem: Write down a matrix A for the following condition: A is a 3x3 matrix with lambda=4 with algebraic...

I'm a bit confused, conceptually. This is the problem Let v1=( 1, -1, 2) v2=( 2, 1, 3) v3=( 1, -4, 3) Find a nonzero vector u that is orthogonal to all three vectors v1, v2, and v3. I know how to find the projection matrix, P, which I can solve with v1, v2, and v3. The equation for that is...

nevermind. I'm a complete retard. I Vce should be: Vce=Vc+Ve=3.3+0.7=4v. But I am still a bit confused about how my professor derived his equation. That looks like a good equation for Vc, not Vce... Atleast to me. Could someone explain this to me?

Hi, I'm having a bit of trouble understanding how exactly to analyze a transistor in a simple circuit... Specifically when finding the collector to emitter voltage, Vce. I've got to be looking at this incorrectly. Below is the question and the solution. My professor worked out the part...

I performed a lab this past week that went over charging/discharing time constants, and I was asked the following about the circuit below: http://synthdriven.com/images/deletable/EEN204-Lab3.jpg Calculate the charing time constant, (Tau_c), and the discharging time constant, (Tau_d). I was...

How do you convert from phasor format into imaginary numbers??

Hey, This is a problem involving loop/mesh analysis on an AC circuit. I'm less confused about the circuit theory, I'm more confused with how to solve the resulting matrix. I get 4 equations with 4 unknowns... Which is something I'm accustomed to solving, but there are three different types of...