Recent content by priscared

Hi, When answering question above, you stated the need "The last part of this question should be a simple sampling in the frequency domain of the transform of the function in part A." I believe i have the right rule attached. e^(j 2pi fc t)g(t) <-> G(f-fc) (this formula is attached in...

thanks for your reply. yeah i was way off. Thanks for the clarification

seems an odd question, and further ellaboration is needed. By the sounds of it, maybe you should just use cylindrical r or spherical co-ordinates. You should google cylindrical co-odinates. There are standard formulas and fudge factors involved, that will get you to your "vector"...

Fourier Transform of sin(10t) Hi all, Can some1 explain how to get the complex Fourier transform of sin(10t) I understand how to steal it off a Fourier transform table, but i have no idea how to do it manually. Any help anyone? Cheers

" A signal's instantaneous power is defined to be its square, as if it were a voltage or current passing through a 1 Ω resistor. " THanks for the link This rule is obviously just an arbitrary convention. It's obviously the definition of "instantaneous power". BTw i can't see how...

hmmm... indeed the poynting vector may have some relevance. But if some1 could point me to a meaningful explanation i would be impressed. I am assuming the assumptions is resistance = 1. And that's how the formula exists. The rule almost seems like an anomaly, every1 uses it without...

that makes life easy! cheers

So here i am, trying to understand a lossless transmission line that has open-circuit termination. So i start with the generic Zi, the equivalent impedance seen by the source, then allow the load impedance (Zl) to approach infinity. As you can see, i have no idea how to do it. It's been way to...

This is obviously an electronics question. In communication systems, to calculate the power of a sine wave, the formula below is used Power (Sine Wave) = 1/2 * (peak amplitude)^2 This formula is apparently a standard electronics formula. I'm trying to understand where it comes from. How...

thanks cheers

Homework Statement G'day, the op-amp circuit is attached. Need to know the Transfer Function. Homework Equations Using Ideal analysis. In=Ip=0A, and Vn=Vp Vo/Vi=-15 The Attempt at a Solution I have had many attempts at it. Because We don't know the input current (no input...