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Old 04-12-2010, 01:35 PM   #41
RR787
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Quote:
Originally Posted by amisuary
Am I the only female engineering student here? Electronic and Computer Engineering. Starting year 2 soon.


Woman and Electric Eng?

Where have you been al this time?!

General consensus of women here study either Industrial or Chemical Engineering.
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Old 04-12-2010, 01:38 PM   #42
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Quote:
Originally Posted by RR787
Woman and Electric Eng?

Where have you been al this time?!

General consensus of women here study either Industrial or Chemical Engineering.
O rly? Haven't noticed yet since I haven't stated my chemE courses yet. Tons of women in organic chemistry though. Kind of surprised me.
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a0/2 + ∑ an cos(nπx/L) + bn sin(nπx/L)

ĤΨ(x,t) = iħ ∂Ψ(x,t)/∂t
σx σp ≥ h/2
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Old 04-12-2010, 01:42 PM   #43
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Hello fellow Engineers.

3rd Year BEng Electronic and Communications Engineer here

I know **** all, so don't ask me questions
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Old 04-12-2010, 01:47 PM   #44
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Originally Posted by CoreysMonster
here in germany we have one single exam per course per semester. if you fail, you have 2 more chances to pass, but each is in the next semester. so you could be one month away from your masters, fail some test for the third time and be kicked.
is it the same where you're from?

Not at all. There are generally periodic exams on several chapters of material, which count for maybe 20-30% of the grade combined, and then at the end of the course there's a final exam which covers all the material in the course, and that counts for 20-30% alone. The amount of periodic exams varies from course to course; my chemistry class has five exams and then a final, whereas my ECE class only has two, and then the final.
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Old 04-12-2010, 01:48 PM   #45
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Quote:
Originally Posted by CoreysMonster
I'm even studying in Darmstadt, which is the second best (and hardest) engineering school in the country. not sure if that's a good thing, though...


and which would be the hardest/best?
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Old 04-12-2010, 01:53 PM   #46
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Hot dang!
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Old 04-12-2010, 01:54 PM   #47
Blayney
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There's my current project.
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Old 04-12-2010, 02:01 PM   #48
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Quote:
Originally Posted by Blayney


There's my current project.
Can you explain what's going on there?
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I'm an
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Enginere
Engenere
I'm good with math.

a0/2 + ∑ an cos(nπx/L) + bn sin(nπx/L)

ĤΨ(x,t) = iħ ∂Ψ(x,t)/∂t
σx σp ≥ h/2
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Old 04-12-2010, 02:11 PM   #49
Blayney
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Quote:
Originally Posted by Got Guitar?
Can you explain what's going on there?


Yup, putting it simply the rotating section is made of mild steel, which obviously has a different reluctance (permeability) of the air. It has "teeth" along it's edge, ie it's not smooth. Call this the trigger wheel.

The cylinder pointing at it is also mildsteel, but on it's end is a neodymium permanent magnet (approx 1200 gauss, or 0.12 Tesla) and along it is an 175 turn coil of wire. Call this the VRS (variable reluctance sensor).

As the magnet is only 2mm from the trigger wheel the magnetic field passes through the trigger wheel, but as the trigger wheel rotates so the teeth mean that it "moves" further from the magnetic field and it's reluctance affects the magnetic field less.

This means that as the wheel rotates the magnetic field changes.

Now as faradays law of induction (I think it's this one) tells us an electro-motive force is induced in a charge carrier perpendicular to a changing magnetic field. Ie because the magnetic field perpendicular to the coil is changing a voltage is induced.

This is the voltage you see on the oscilloscope (the sine wave)

edit - The reason there's a PCB on there is the other part of that device, it's also a rotary encoder. The pcb has copper tracks that carbon brushes were meant to run along, and the tracks alternate between copper and plastic, so conductive and non-conductive. This would produce binary words representing angles of rotation. However I never managed to get the brushes, so that part is untested.
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Last edited by Blayney : 04-12-2010 at 02:12 PM.
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Old 04-12-2010, 02:32 PM   #50
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First year EE just finishing up now. Did great so far but chem is going to rapez me hard
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Old 04-12-2010, 02:39 PM   #51
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Originally Posted by kurtlives91
First year EE just finishing up now. Did great so far but chem is going to rapez me hard

I don't want to sound like a suck-up, but I wanted to say that I've always admired your amp building work in the GB&C forum, and I aspire to have a similar level of knowledge and experience some day.

Just thought I'd say it while I had the opportunity.
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Old 04-12-2010, 02:40 PM   #52
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Was a Chemical engineer, but switched two years ago to Biomedical engineering. its much better. has elements of medicine, mech e, EE, mechanics, chemical engineering and programming
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Old 04-12-2010, 02:43 PM   #53
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I'm in year 11 right now, and I want to do engineering in university (thats 2.5 years from now).

You guys are my inspiration...

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Old 04-12-2010, 02:44 PM   #54
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second semester of computer engineering. doing decent in classes tho i could totally be doing better
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Old 04-12-2010, 02:45 PM   #55
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Quote:
Originally Posted by floodinator
and which would be the hardest/best?

TU Munich.

which is also the most expensive.
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Old 04-12-2010, 02:51 PM   #56
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Originally Posted by CoreysMonster
TU Munich.

which is also the most expensive.


That's where I study

Last edited by floodinator : 04-12-2010 at 02:57 PM.
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Old 04-12-2010, 02:54 PM   #57
XgamerGt04
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Going into Final Year of EE. I just got the okay for my senior project which has a lot to do with trying to design a transistor based amplifier to mimic tube sound. Its not digitizing the sound in anyway, but rather biasing the transistors in such a way, and controlling the input, so that they clip the waveforms similar to the way that a triode does.
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Old 04-12-2010, 02:56 PM   #58
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Old 04-12-2010, 02:59 PM   #59
sashki
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Quote:
Originally Posted by XgamerGt04
Going into Final Year of EE. I just got the okay for my senior project which has a lot to do with trying to design a transistor based amplifier to mimic tube sound. Its not digitizing the sound in anyway, but rather biasing the transistors in such a way, and controlling the input, so that they clip the waveforms similar to the way that a triode does.

I heard that the reason tube amps sound the way they do is because they amplify both odd and even harmonics (or create odd and even harmonics due to clipping, I don't remember exactly) whereas solid state amps produce mostly just odd harmonics.

Is any of this true?
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Old 04-12-2010, 02:59 PM   #60
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I'm a second semester aerospace probably switching to mechanical or in to economics depending on how I do in calc II. Chem is easy. Bio sucks.
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