Robert Chipman, "Theory and Problems of Transmission Lines"

[Joel Kolstad]

Somewhat inspired by Dave Platt's efforts to scan Laport's "Radio Antenna
Engineering" book (available at
http://snulbug.mtview.ca.us/books/RadioAntennaEngineering/), I decided to scan
a couple a few books that are no longer available as well. First up is Robert
Chipman's "Theory and Problems of Transmission Lines," at
http://oregonstate.edu/~kolstadj/ as "Transmission Lines (Chipman).pdf".

By next week, I should have a copy of Dostal's "Operational Amplifiers" there
as well (...since Terry Givens didn't want to sell me his copy! ).

In all cases I'm assuming the copyrights have long since; if I hear otherwise
I'll pull the copies.

---Joel Kolstad

 

[Terry Given]

Joel Kolstad wrote:

Somewhat inspired by Dave Platt's efforts to scan Laport's "Radio Antenna
Engineering" book (available at
http://snulbug.mtview.ca.us/books/RadioAntennaEngineering/), I decided to scan
a couple a few books that are no longer available as well. First up is Robert
Chipman's "Theory and Problems of Transmission Lines," at
http://oregonstate.edu/~kolstadj/ as "Transmission Lines (Chipman).pdf".

By next week, I should have a copy of Dostal's "Operational Amplifiers" there
as well (...since Terry Givens didn't want to sell me his copy! ).

In all cases I'm assuming the copyrights have long since; if I hear otherwise
I'll pull the copies.

---Joel Kolstad

Hi Joel,

arent I a rat bastard

was that a picture of you & partner?

Cheers
Terry

 

[Terry Given]

Terry Given wrote:

Joel Kolstad wrote:

Somewhat inspired by Dave Platt's efforts to scan Laport's "Radio Antenna
Engineering" book (available at
http://snulbug.mtview.ca.us/books/RadioAntennaEngineering/), I decided
to scan
a couple a few books that are no longer available as well. First up
is Robert
Chipman's "Theory and Problems of Transmission Lines," at
http://oregonstate.edu/~kolstadj/ as "Transmission Lines (Chipman).pdf".

By next week, I should have a copy of Dostal's "Operational
Amplifiers" there
as well (...since Terry Givens didn't want to sell me his copy! ).

In all cases I'm assuming the copyrights have long since; if I hear
otherwise
I'll pull the copies.

---Joel Kolstad


Hi Joel,

arent I a rat bastard

was that a picture of you & partner?

Cheers
Terry

am downloading the antenna book. fucking pathetic, its going to take
45mins to suck back all 35Mb. the Tx line book took a couple of minutes.
so much for bit torrent.

Cheers
Terry

 

[Mike Monett]

Terry Given wrote:

[...]

am downloading the antenna book. fucking pathetic, its going to take
45mins to suck back all 35Mb. the Tx line book took a couple of minutes.
so much for bit torrent.

Cheers
Terry

Is it in scanned image format? That makes searching difficult

You are very lucky. Think of us poor clods on 28k dialup!

Mike Monett

 

[Terry Given]

Mike Monett wrote:

Terry Given wrote:

[...]


am downloading the antenna book. fucking pathetic, its going to take
45mins to suck back all 35Mb. the Tx line book took a couple of minutes.
so much for bit torrent.

Cheers
Terry


Is it in scanned image format? That makes searching difficult

You are very lucky. Think of us poor clods on 28k dialup!

Mike Monett

its a scanned image PDF. I use a neural net to do my searching of books
(I read them, then remember whats in them and roughly where).

I am not lucky, I am sneaky. I contract to a company in Auckland, NZ (1
week per month), and that contract specifically allows me to bill them
the NZ$90/month for my broadband internet connection. Otherwise, it'd be
dial-up for me too

on a related note, few things are more annoying than boneheads who think
giant images are necessary for websites. Or worse still, animations.

Cheers
Terry the luddite

 

[Mike Monett]

Terry Given wrote:

[...]

its a scanned image PDF. I use a neural net to do my searching of books
(I read them, then remember whats in them and roughly where).

I used to be able to do that with books. But now they are disk files and
there are too many

Besides, when you are looking for info on a tone control circuit, you
automatically know it will be in the thick, short red book called
"Radiotron Designer's Handbook". Filter stuff will be in the huge medium
thickness book by Zvrev, perhaps also with a red cover. So the
associations are easy to make.

But it gets much more difficult when you have hundreds of thousands of
files scattered through thousands of directories. They have no color or
weight, and each one basically looks exactly the same as the others until
you open them and start browsing.

So I wrote a special operating system that runs in dos and attaches a
descriptive phrase to each file. Yes, hundreds of thousands of them.
Fortunately, the software can sift through html, c, pascal, and plain
text and extract some meaningful information about the contents. But I
can override that whenever I wish.

The description goes with the file when it is moved or copied to another
directory. I then generate an index that contains all the descriptions,
and can search for a key word or phrase that appears in the index. It
takes just under two seconds to find all the files on my hard disk that
match the search terms. I can hilite a file with the cursor and scroll
through the list.

When I find a file that looks interesting, a single keystroke takes me to
the drive and directory where the file is located, and places the cursor
of the main program on the file. Then I can read it with any of a number
of different programs, depending on the file type.

The program keeps the files separate by naming them with a hexadecimal
representation of the current date and time. Since this never repeats, I
can copy or move files anywhere without worrying about overwriting
another file with the same name. Except, of course, if it's app notes by
different companies that happen to have the same name. The program warns
me this is about to happen so I can check if I really want to do the
operation.

But I end up never having to type in a directory or filename. And the
system is hundreds of times faster than any gui OS - Windows or Linux!

I am not lucky, I am sneaky. I contract to a company in Auckland, NZ (1
week per month), and that contract specifically allows me to bill them
the NZ$90/month for my broadband internet connection. Otherwise, it'd be
dial-up for me too

Sneaky. I'm using Win 3.1, so there's no way I could get broadband. The
necessary api's won't run on my machine, and there is only one person in
the world still using it so nobody is going to write anything for it.
Including viruses. Yea!
And Trojans. Yea!
And popups. Yea!

on a related note, few things are more annoying than boneheads who think
giant images are necessary for websites. Or worse still, animations.

Cheers
Terry the luddite

Yes - let's hear it for Flash! It won't even run on my machine

I am still astonished at the way people will make 350k gif files that
could be shrunk to 10k if they knew how. Or 2 page pdf files that are
mostly text but take up 3 megs. These people should be given a DOS
machine and floppies for a year until they figure out how much this costs
the other people who have to download and store it.

Mike Monett

 

[Terry Given]

Hi Mike,

Mike Monett wrote:

Terry Given wrote:

[...]


its a scanned image PDF. I use a neural net to do my searching of books
(I read them, then remember whats in them and roughly where).


I used to be able to do that with books. But now they are disk files and
there are too many

Besides, when you are looking for info on a tone control circuit, you
automatically know it will be in the thick, short red book called
"Radiotron Designer's Handbook". Filter stuff will be in the huge medium
thickness book by Zvrev, perhaps also with a red cover. So the
associations are easy to make.

yay for Anatol and FLS. Actually, my copy of Zverev only turned up last
week. US$135, ouch. But I have used him before, to great effect.

OTOH I got motchenbacher (pristine) for about $10, and Pease for about $15.

But it gets much more difficult when you have hundreds of thousands of
files scattered through thousands of directories. They have no color or
weight, and each one basically looks exactly the same as the others until
you open them and start browsing.

So I wrote a special operating system that runs in dos and attaches a
descriptive phrase to each file. Yes, hundreds of thousands of them.
Fortunately, the software can sift through html, c, pascal, and plain
text and extract some meaningful information about the contents. But I
can override that whenever I wish.

The description goes with the file when it is moved or copied to another
directory. I then generate an index that contains all the descriptions,
and can search for a key word or phrase that appears in the index. It
takes just under two seconds to find all the files on my hard disk that
match the search terms. I can hilite a file with the cursor and scroll
through the list.

When I find a file that looks interesting, a single keystroke takes me to
the drive and directory where the file is located, and places the cursor
of the main program on the file. Then I can read it with any of a number
of different programs, depending on the file type.

The program keeps the files separate by naming them with a hexadecimal
representation of the current date and time. Since this never repeats, I
can copy or move files anywhere without worrying about overwriting
another file with the same name. Except, of course, if it's app notes by
different companies that happen to have the same name. The program warns
me this is about to happen so I can check if I really want to do the
operation.

But I end up never having to type in a directory or filename. And the
system is hundreds of times faster than any gui OS - Windows or Linux!

fantastic. I have contemplated doing this with .html attachments, and a
self-compiling intranet. lack of round-to-its, coupled with a distinct
unwillingness to write code of any form, have hampered my efforts to date.

I am not lucky, I am sneaky. I contract to a company in Auckland, NZ (1
week per month), and that contract specifically allows me to bill them
the NZ$90/month for my broadband internet connection. Otherwise, it'd be
dial-up for me too


Sneaky. I'm using Win 3.1, so there's no way I could get broadband. The
necessary api's won't run on my machine, and there is only one person in
the world still using it so nobody is going to write anything for it.
Including viruses. Yea!
And Trojans. Yea!
And popups. Yea!


on a related note, few things are more annoying than boneheads who think
giant images are necessary for websites. Or worse still, animations.

Cheers
Terry the luddite


Yes - let's hear it for Flash! It won't even run on my machine

I am still astonished at the way people will make 350k gif files that
could be shrunk to 10k if they knew how. Or 2 page pdf files that are
mostly text but take up 3 megs. These people should be given a DOS
machine and floppies for a year until they figure out how much this costs
the other people who have to download and store it.

Mike Monett

hear hear. I have been having a discussion with a company in NZ about
code space issues - they have used most of the available 8kb "rom" (ram
really), and a big chunk of the 128 + 128 bytes RAM. I just keep telling
them to harden up, and write better code. real men only need 1 bit.

Cheers
Terry

 

[Joel Kolstad]

"Terry Given" <my_name@ieee.org> wrote in message
news:2Wule.3238$U4.472104@news.xtra.co.nz...

was that a picture of you & partner?

Yep, that's us and the dogs (they came with the girlfriend ).

---Joel

 

[Mike Monett]

Hi Terry,

Terry Given wrote:

Hi Mike,

[...]

yay for Anatol and FLS. Actually, my copy of Zverev only turned up last
week. US$135, ouch. But I have used him before, to great effect.

Mine disappeared some time ago. Someone borrowed it and didn't tell me.
But I have been able to reconstruct some of the graphs from appendixes in
other articles, and I found some of the tabulated data on the web. I'm
still missing the Gaussian stuff, but I got most of the rest.

OTOH I got motchenbacher (pristine) for about $10, and Pease for about $15.

I've heard lots of good stuff on Pease's book - what do you think of it?

[...]

But I end up never having to type in a directory or filename. And the
system is hundreds of times faster than any gui OS - Windows or Linux!


fantastic. I have contemplated doing this with .html attachments, and a
self-compiling intranet. lack of round-to-its, coupled with a distinct
unwillingness to write code of any form, have hampered my efforts to date.

Just for fun, I did a search on "Widlar". The search uses Boyer-Moore in
optimized assembly and does a little over 100,000 files per second.
That's 10uS per file.

Here's the results. It found five references in 167,000 files in 1.6
seconds:

-----------------------------------------------------------------------

Searching for "WIDLAR"

F:\ZSAVE\ENG\SPICE\KEVIN\
2C7312A0 HTM 2C731308 4,653 Widlar Current Source

H:\APPNOTES\NATSEM\
NSC06611 PDF 2C739425 123,877 Natsem AN41 Widlar 1970 Mexico

N:\THEORY\BPEASE\
2EB45504 HTM 2EB45548 4,817 Robert Widlar
2EB45508 HTM 2EB455BD 17,877=What's All This Widlar Stuff, Anyhow?

Q:\4NEWS\DOWNLDS\
314BBDF1 ZIP 314BBDF6 953,730 Bob Widlar

Searched 167,754 files in 3,040 directories

Found 5 hits in 1,593.203 ms

-----------------------------------------------------------------------

This is on a 200MHz Pentium with a 5400 rpm drive. I would expect a bit
better performance with a 2GHz machine like the rest of you are running

[...]

hear hear. I have been having a discussion with a company in NZ about
code space issues - they have used most of the available 8kb "rom" (ram
really), and a big chunk of the 128 + 128 bytes RAM. I just keep telling
them to harden up, and write better code. real men only need 1 bit.

Cheers
Terry

It may be difficult just telling them to write better code. If you have
to tell them, they have no clue what you are talking about.

What you need to do is encourage them to waste as much ram as possible.

Then when the s**t hits the fan, you can be the high-priced hero that
bails them out of a tough spot

Mike Monett

 

[Joel Kolstad]

"Mike Monett" <no@spam.com> wrote in message news:4296A86D.7202@spam.com...

So I wrote a special operating system that runs in dos and attaches a
descriptive phrase to each file.
The description goes with the file when it is moved or copied to another
directory.

Sounds a lot like 4DOS (the "describe" command)! In the prehistoric days when
files names were limited to 8.3 it was a lifesaver. (What is VGTslSm4.exe?)

Sneaky. I'm using Win 3.1, so there's no way I could get broadband.

Sure you could, if you use a cable or DSL modem with an Ethernet connection.
The first machine I ever ran Mosaic (ancient web browser) on was under Win
3.1.

Yes - let's hear it for Flash! It won't even run on my machine

I have an acquaintance that I do computer maintenance for from time to time
and one of his stated intentions was "to become the eBay of the fruit
brokering business" (yeah, I know, but...). Unfortunately the firm (out of
India, no less! -- somehow he hooked up with their representative here in the
US) built him a web site that, IMO, sucks rocks. Not only does it require
flash but it immediately maximizes your browser window as soon as it opens...
arrggh! (The site is http://www.foodguys.com/ in case anyone cares...) At
this point I think his aspirations remain a little far from fruition (ha, ha).

I went to a talk by Scott Meyers something over a year ago and he mentioned
that Amazon is really quite good with achieving "high functionality" with no
fancy plug-ins required. It really is impressive compared to the likes of
foodguys...

I am still astonished at the way people will make 350k gif files that
could be shrunk to 10k if they knew how.

Because they don't know how and it doesn't pay to teach them?

These people should be given a DOS
machine and floppies for a year until they figure out how much this costs
the other people who have to download and store it.

Here in the US broadband Internet connectivity is in the ballpark of
$35-$50/mo and is available to (I'm guessing) over 90% of the population (and
100% free-to-you wireless access is becoming increasingly common as well).
That price isn't onerous when you consider how many people pay comparable
amounts for their cable TV, cell phones, etc. That's no excuse for this
pathetic web pages we're discussing, but you can understand why people aren't
out staging riots in the street over it.

---Joel

 

[Terry Given]

Joel Kolstad wrote:

"Terry Given" <my_name@ieee.org> wrote in message
news:2Wule.3238$U4.472104@news.xtra.co.nz...

was that a picture of you & partner?


Yep, that's us and the dogs (they came with the girlfriend ).

---Joel

Nice. When I've figured out how to hook up my camera, I'll post a shot
of me, Ruth and Holly the brainless, floppy-eared-yet-pedigree Alsatian.
And perhaps the dinner we cooked on an open fire a couple of nights ago.

Cheers
Terry

PS keep up the good work

 

[~^Johnny^~]

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On Fri, 27 May 2005 16:11:23 +1200, Terry Given <my_name@ieee.org>
wrote:

on a related note, few things are more annoying than boneheads who
think giant images are necessary for websites. Or worse still,
animations.

Or SWF intros and menus. Or Active-X controls. ;`(

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--
-john
wide-open at throttle dot info

~~~~~~~~
Maybe I should ask Radio Shack. They claim they've got answers;
but frankly, if Radio Shack were our provider, we'd _really_ be in
trouble now, wouldn't we?
~~~~~~~~