Recent content by dvchench

This may or may not coincide with the intention of the OP, but I'd like to specify what I'm looking for, since this thread is a prominent google results but does not have much information in terms of answers. I am a first-year MS student in electrical engineering, doing research with a...

Wow, thank you guys for posting this. Just to let everyone know, A-PDF works like a charm under Wine on Linux Mint 9. This is the kind of program I would be happy buying (if i did this type of stuff very often or for work). P.S. I sometimes torrent e-copies of books which I legally own as...

so i found the answer here: https://www.physicsforums.com/showthread.php?t=98825 maybe my wording of this question wasnt good enough. o well.

doesn't a wire with current flowing through it have a surface charge density along its circumference that generates an e-field away from the center of the wire? can't quite remember that part of EM1 that well... I know that was the basis of most of our image theory problems -- a high-voltage...

just out of curiosity, would the arc itself generate a field?

it's probably more appropriate to put this in the homework sections. ( since this problem seems purely theoretical and i don't see how you could be dealing with this in real life) i don't really know, but my guess it away from the arc, since it may be a bunch of electrons moving through air...

WHOA! http://www.wolframalpha.com/input/?i=low+pass+filter designs filters for you http://www.wolframalpha.com/input/?i=op+amp also, a simpler calculator for the parallel resistances...

gabbagabbahey, thanks for the reply. I'm only concerned because it seems like I'm doing it the hard way - after 1.5 pages of math, I'm starting to feel like I'm mowing the lawn with a pair of nail clippers (or mopping a gym floor with a toothbrush, take your pick of metaphor). I just wanted to...

I'm doing a HW problem that involved trying to find Fourier series. I know how to do it, but I'm really bothered by the fact that I have to do so much trigonometric integration by parts. my question is, is there any better way to solve the problem: <int,indef.,dt>{ sin(a*t)*cos(b*t) } or is...

also, I'd like to point our that you have several syntax errors in the code. (i numbered the lines) the slash in line 3 gives an error. i assume you want \n inside the quotes, because that generates a newline. ex.: printf("foo\nBAR"); foo and Bar would print on different lines. also in 3...

Nice. We've been trying to be stingy with op-amp usage (although same can't be sau=id of us using 7 display drivers, one per bar), but maybe simpler would have been exponentially easier. LOL we also found that the LEDs flicker at low frequencies, but we considered that a bug for some reason...

thanks, Bob S. we were using that as a source, but couldn't figure out the transfer function for their filters... until now in case anyone is looking for the same info: http://www.robots.ox.ac.uk/~sjrob/Teaching/SP/l4.pdf on page 6 of this pdf, there is a good analysis of the milti-feedback...

vk6kro: what program did you use for the sim?

thanks! yeah, we were using the same calculator website. one of our resistor vals was off, so we were getting strange results. thank you for the simulation, this really gives me confidence, I was trying to do this in matlab, but had trouble entering the H-function, but i think now i can plot a...

One of our group members suggested it, but we are very limited in the ICs we can use. If we do that, then we can use TTL chips and that's about it, but as far as doing the A to D conversion (i don't even think we need D-A conversion), we're on our own and clueless about it. Basically our toolbox...