Engineering and math

[Eeyore]

It's a public school that draws up its own rules of operation that are
different from the usual, universal ones. It could specialize in arts,
dance, science, or something like that, and admit students and select
teachers on that specialized basis. The "charter" is the defining
document. These remain in the free public school system, but often get
additional outside funding.

http://en.wikipedia.org/wiki/Charter_school


What would it cost to attend St Albans these days?

I truly hate to think about it ! Here we go.
http://www.isbi.com/isbi-viewschool/2297-ST_ALBANS_SCHOOL.html
£11,118 ( $ 20,568 )

The US one is more ! ( $26,501 )
http://www.stalbansschool.org/home/content.asp?id=858

The Brat attended public grammar and middle schools here (free, and
quite good) and a Jesuit high school, which was very good. It cost
about $7k a year, probably about $10K now. High-end private high
schools can cost $15k to over $30k a year here. Lick-Wilmerding High
School is the high end here, probably $40K by now, but they do require
all their students to learn welding.

Welding ! ?

Graham

 

[John Larkin]

Welding ! ?

Everyone should learn to weld.

John

 

[Spehro Pefhany]

Everyone should learn to weld.

John

MIG, TIG or stick? I've been wanting to take up TIG.


Best regards,
Spehro Pefhany

 

[John Larkin]

MIG, TIG or stick? I've been wanting to take up TIG.


Best regards,
Spehro Pefhany

I'd recommend MIG, where the electrode is the filler material, in the
form of wire fed into the tip through the hose, along with an inert
gas. It's very easy to do and, if you know how to solder (and you do!)
you can make beautiful beads almost right away.

http://www.weldingengineer.com/1mig.htm

I bet one of those newish LCD welding helmets would be slick, too.

John

 

[Robert Latest]

On Thu, 19 Oct 2006 21:50:13 -0400,

MIG, TIG or stick? I've been wanting to take up TIG.

At $40k/a they'd better offer all three options. And the LC
auto-shutter mask.

robert

 

[[email protected]]

I'm an EE and taking classes for my Master's. And I am again realizing
my distaste for math. I don't hate it, I just really struggle with it.
Is this weird?

I have always really enjoyed designing and building electronic things,
and even daydream about it. I analyze everything beyond what I believe
is normal, and am always trying to figure out better/easier ways to do
things, and I'm employed as an engineer. Yet anything beyond
high-school level math drives me nuts. Is it an oxymoron to like
engineering but look at a complex math problem like it's written in
Chinese?

 

[Michael A. Terrell]

Everyone should learn to weld.

John

Real men cut steel with a torch! Donkeys just cut the cheese.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[Daniel Mandic]

Everyone should learn to weld.

John

Weld with a car? Welding alcoholics??


To solder..... That's the finer, more elegant version.




Kind Regards,

Daniel Mandic

 

[joseph2k]

On Thu, 19 Oct 2006 21:50:13 -0400,


At $40k/a they'd better offer all three options. And the LC
auto-shutter mask.

robert

Maybe gas welding to boot, it can still do a few things that electrics
can't.

 

[joseph2k]

Weld with a car? Welding alcoholics??


To solder..... That's the finer, more elegant version.




Kind Regards,

Daniel Mandic

Soldering has strength limitations. You may have to weld your parts to the
board to meet some stringent applications.

 

[joseph2k]

I don't think they knew of any vessel coming.



What totally perplexed me was why those trapped in the WTC couldn't get
out onto the roof ! Was there no access ? Has anyone thought to fix this ?

Graham

Some did get to the roof, and when they glimpsed the situation they jumped.

 

[joseph2k]

Fine. This is also what I would do if I wanted a frequency response, I
assure you

So you have the physics of the elements (as you described, in the part you
snipped ) in the time domain. What are you using in the frequency
domain?

Best Regards

Jens

I doubt that John will respond, each component that has a reasonable time
domain description has a reasonable frequency domain description. Simply
start with the frequency domain descriptions and solve the circuit. I
found the math real twisty the first few times, then i got the hang of it.

 

[John Larkin]

I doubt that John will respond, each component that has a reasonable time
domain description has a reasonable frequency domain description. Simply
start with the frequency domain descriptions and solve the circuit. I
found the math real twisty the first few times, then i got the hang of it.

Well, there's not much more to say. My position is that I use no
transform mathematics when I do a Bode plot to design or analyze
closed-loop stability; often I do it all in my head and on a scrap of
quadrille paper, without even using a calculator, sometimes without
even the paper. Jens thinks that the existance of the Fourier
transform somehow makes it possible for me to do this.

Matter of opinion.

John

 

[John Fields]

Weld with a car? Welding alcoholics??


To solder..... That's the finer, more elegant version.

 

[Daniel Mandic]

Hi John!



Now, when you have got your popo-claps with the English subscribers, you
come to me.

Well, it's noted...



Best Regards,

Daniel Mandic

P.S.: E.g. A car is welded.

 

[John Fields]

Hi John!



Now, when you have got your popo-claps with the English subscribers, you
come to me.

---
Two problems:

1. You say "popo-claps" as if that's something I should understand.
Why would you think that? That may be a common phrase in Austria
or somewhere else in Europe, but remember: this is an
English-language group chartered for the purpose of discussing
things electronic, not your silly foibles.

2. I don't "come to you", I criticize you.
In English, were I to "come to you" it would be on the
expectation of receiving something from you, as in "I came to him
with an invoice"

What is it you're really trying to say?

Well, it's noted...

---
Whatever that means???
---

P.S.: E.g. A car is welded.

---
And yet, you consider:

"To solder..... That's the finer, more elegant version."

Does that mean that you'd consider a car with all its welded joints
soldered, instead of welded, to be finer and more elegant?

 

[PeteS]

Well, there's not much more to say. My position is that I use no
transform mathematics when I do a Bode plot to design or analyze
closed-loop stability; often I do it all in my head and on a scrap of
quadrille paper, without even using a calculator, sometimes without
even the paper. Jens thinks that the existance of the Fourier
transform somehow makes it possible for me to do this.

Matter of opinion.

John

I use (if I'm feeling guilty) a spreadsheet to generate simple tables so
I can confirm my designs for linear systems, usually power supply loops.

Regardless of the common wisdom, I make sure they don't phase reverse
across the _entire_ gain range (rather than merely at unity gain) and I
haven't used anything more esoteric than a gloroified simple calculator
(toughest computation -> reciprocal).

I'll note I've done a lot of those designs and they have all worked
flawlessly. There are times for full analysis using transforms, but I
haven't needed it for linear feedback loops.

Cheers

PeteS

 

[Homer J Simpson]

I use (if I'm feeling guilty) a spreadsheet to generate simple tables so I
can confirm my designs for linear systems, usually power supply loops.

Regardless of the common wisdom, I make sure they don't phase reverse
across the _entire_ gain range (rather than merely at unity gain) and I
haven't used anything more esoteric than a gloroified simple calculator
(toughest computation -> reciprocal).

I'll note I've done a lot of those designs and they have all worked
flawlessly. There are times for full analysis using transforms, but I
haven't needed it for linear feedback loops.

IIRC, Excel includes a version of TK!Solver so it should be fine for this.

 

[Daniel Mandic]

Two problems:

1. You say "popo-claps" as if that's something I should understand.
Why would you think that? That may be a common phrase in Austria
or somewhere else in Europe, but remember: this is an
English-language group chartered for the purpose of discussing
things electronic, not your silly foibles.

It hit you hard, it hit you hard ;-.)



Best Regards,

Daniel Mandic

P.S.: 'Bottom Claps'

 

[Michael A. Terrell]

It hit you hard, it hit you hard ;-.)

Best Regards,

Daniel Mandic

P.S.: 'Bottom Claps'

No one knows what the hell you're babbling about, as usual.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida