Recent content by nelectrode

Hi guys, I am trying to find the z-tranform of the following equation: x(n) =-2n u(-n-1) Using the Z-transform definition,summation and geometric series I am getting 1/(1-2z-1) But according to my lecturer the answer is suppose to be 0.5/(1-2z-1) I have tried simplification/factorization and...

thanks a lot :smile:

Hi, How would you solve a singular matrix? ie when determinant is zero. Lets assume an equation, (1) Ax+By=E and (2) Cx+Dy=F if the determinant; AD-BC = 0, and therefore the matrix is singular, How to go around solving the equation? LU decomposition, Gaussian elimination? Ideally I am...

That's what I thought but the values don't really match the one here: http://www.embedded.com/print/4402915 So what is input Impedance for a 150Ω load resistance? Because the app gives a Z and Z0?

Hey, Thanks a lot, but as Baluncore stated this is purely a theoretical question, so I basically have to use the Java app to work out my values. I do know the following only: Type: RG-59 Characteristic impedance: 75 Ω frequency: 1Mhz have to find: Matched attenuation(dB/100ft): ? Matched...

Hey Guys, How do I work out Transmission loses and input impedance for coaxial cable? I’ve been given this website to use http://fermi.la.asu.edu/w9cf/tran/ I do have the characteristic impedance of 75Ω and frequency and I am asked to work the attenuation in dB/100ft and “input...

Hey, What are the steps to follow to draw a truth table and create canonical expression from a given expression A? Lets say I have A= B'.(C'+D) 1) first I have to draw the truth table for the expression above, but How could I do that since I only have one expression? 2)Then I...

Hey guys, I am wondering what is the best type of mini hydro power plant to produce between 1 and 5Kw of energy. From what I understand most micro generator needs high head, and they take advantage of the relief (since power=head*flow*g) I am looking at an area where the head is very...

Hey guys, I have a question concerning CW generator which might be a bit stupid: How can we increase the voltage by using an AC source, capacitors and diodes ? Capacitors is used to store charge, diode to block current flowing the "wrong way", since its an AC current, capacitors will charge...