EAGLE Netlist conversion

[qrk]

On 28 Jun 2005 11:02:27 -0700, "beta" <vcbo30v@inorbit.com> wrote:

Is there a way to match impedance for a circuit given typical input and
output stages of transistors for square wave (and other) types of
inputs? Was wondering if there were such a function in spice type cad
simulators (e.g. orcad) that would compute the proper loads given
networks of R, C components, and later stages of transistors. Part of
issue is that I'm not certain how to do it without spice utils, so it
maybe the cart before the horse situation. Thanks.

What sort of rise and fall times are you dealing with?
What sort of trace lengths are you dealing with?

Matched impedance, as stated by others, is lunacy unless you have
signal fidelity issues due to reflections. If you have long trace
lengths compared to transition times, then it's helpful to use
impedance matching of some sort. Page thru a copy of "High-Speed
Digital Design, a Handbook of Black Magic" by Howard Johnson. He gives
criteria and shows how to terminate transmission lines for various
scenarios. Don't be fooled by "Digital" in the title. Most of the
content is in the analog realm.

-----
Mark

 

[qrk]

On 30 Jun 2005 17:37:40 -0700, "billcalley" <billcalley@yahoo.com>
wrote:

Thanks James! Appreciate the great answer.

Bill

It's hard to see Jim as a "James"! Too dang formal.

----
Mark

 

[Jim Thompson]

On Fri, 01 Jul 2005 20:32:26 GMT, qrk <SpamTrap@spam.net> wrote:

On 30 Jun 2005 17:37:40 -0700, "billcalley" <billcalley@yahoo.com
wrote:

Thanks James! Appreciate the great answer.

Bill

It's hard to see Jim as a "James"! Too dang formal.

----
Mark

I was a geek named "James" until I met my wife-to-be... I then became
"Jimmy" ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

 

[Steve]

On 29 Jun 2005 06:43:13 -0700, "billcalley" <billcalley@yahoo.com>
wrote:

In looking at MWO and ADS, it seems to me that most of the nonlinear
transistor models in their libraries are simply Spice models (either as
.model or .subckt files). Is this pretty much all harmonic balance
simulators use; or are there actually some true HB transistor models
out there?

There's some interesting stuff (research) going on with nonlinear
black-box models, but basically if you want a nonlinear time or
frequency-domain model, you're going to be using a spice-like model.
In the frequency domain case the HB simulators just fft and ifft, but
the equations are often those used in spice.

This isn't all that bad... For instance, some work under Prof. Mayaram
at Oregon State showed that the BSIM3 model works pretty good, with
some extra parasitics, into multiple GHz. There are a number of 'high
frequency' device models that are basically low-frequency spice models
with extra parasitics which become important as the frequency rises.

As far as "true HB transistor models" -- what would that look like?

Yet I always hear how inaccurate Spice models are at microwave
frequencies; so I guess I just assumed there were actually HB models
out there so as to more accurately take into account all of the high
frequency effects of an active device...

Most high frequency models are lumped approximations for the passive
stuff and spice-like nonlinear models with (apparently kluged-up)
parasitics added that kinda make the frequency response go the right
way.

If the spice models are bad... -- I've always wondered how anything
worked even semi-efficiently before HB. Dropping nonlinear devices
into a microwave network and modeling it using linear models... ugh.

 

[Ken Smith]

In article <1120333366.714580.63210@f14g2000cwb.googlegroups.com>,
<seegoon99@yahoo.com> wrote:

Hi to all.
how do you set up a voltage source to do the following.
Initially In want a sine wave at a certain frequency and amplitude and
after a predetermined time I want it to change its amplitude.
ie: 1khz at 200mv and after say 100ms change to 1khz at 300mv.
Cheers
Rob

I'm not saying this is the best way to do it:

Make two voltage sources. One runs forever and the other a certain number
of cycles. If you hook them in series, you get two different amplitude
waveforms.


OR:

Use one of the ARB voltage functions to multiply the sinewave by a pulse.
This allows you to make a sinewave that cycles back and forth and goes
smoothly between amplitudes.



--
--
kensmith@rahul.net forging knowledge

 

[Blastoff]

Its similar to RDP, but in my opinion its far
better for a number of reasons. For example the
screen refreshes are very quick whil controlling
the remote PC, this is great if you dont happen
to have access to dsl.

The server part of the software "What you install on the pc"
you wish to control offers the ability to use any port, it
also offers password auth, encryption, good logging. Ability
to restrict connecting IP's etc. File upload and download,
telnet ..

To get a feel for it.. just download it and try it.

I like it , its about the best I have found.

Blast..








On Thu, 30 Jun 2005 13:34:00 -0700, "Joel Kolstad"
<JKolstad71HatesSpam@yahoo.com> wrote:

Blastoff,

"Blastoff" <none@nospam.net> wrote in message
news:krp6c1lourfudjcmh74ajaqka1gna4nn1f@4ax.com...
The best remote administrator solution there is "is"
available here

http://www.famatech.com/

Can you comment on how it compares to the Windows XP Remote Desktop tool?

---Joel Kolstad

 

[Blastoff]

Any firewall can acomplish this.

No idea about the SW you mention..




On Fri, 01 Jul 2005 08:45:29 +0100, Paul Burke <paul@scazon.com>
wrote:

Joel Kolstad wrote:

Can you comment on how it compares to the Windows XP Remote Desktop tool?

Is there a sort of reverse product, for stopping other people accessing
your computer, called gofrommywindows?

Paul Burke

 

[Charlie Edmondson]

swimmerPhil1@gmail.com wrote:

Hi Charlie,
Would you mind giving an example link of where I can find these models
that the std PSpice libraries may not have? Thanks

Phil

Hi Phil,

Well, manufacturers websites are often the best ones. In case you
didn't know, most of the models included in the commercial software
packages originally come from the manufacturers. They are not created
by the software companies. It isn't their area of expertise, you see...

So, manufacturer ANxxx Devxxx comes out with a new line of parts. They
will send those models to the software vendors, with an agreement to
allow them to distribute those models with their software. But, what if
they don't want to have it distributed? Or if they want to control who
actually gets the models? Then, they will NOT send them to the sim
software folks, but keep them on their own websites, sometimes with NDAs
associated. In that case, users that want to use their parts need to
come to the manufacturer directly to get those models.

So, among the different vendors with spice models on their sites are TI,
Analog Devices, Linear Tech, and a host of others...

Charlie

 

[Kevin Aylward]

Charlie Edmondson wrote:

swimmerPhil1@gmail.com wrote:
Hi Charlie,
Would you mind giving an example link of where I can find these
models that the std PSpice libraries may not have? Thanks

Phil

Hi Phil,
Well, manufacturers websites are often the best ones. In case you
didn't know, most of the models included in the commercial software
packages originally come from the manufacturers. They are not created
by the software companies. It isn't their area of expertise, you
see...

Neither is it the expertise of the application engineers that crib most
of them, and it often shows

Kevin Aylward
informationEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

 

Hi Charlie,
Would you mind giving an example link of where I can find these models
that the std PSpice libraries may not have? Thanks

Phil

 

[Mike Monett]

Jim Thompson wrote:

On Tue, 21 Jun 2005 22:41:58 GMT, Ted Edwards
Ted_Espamless@telus.net> wrote:

Jim Thompson wrote:
copy header.ps+file1.ps+file2.ps+file3.ps+... +footer.ps total.ps
...
(I'm using this to merge numerous simulation outputs into a single
PostScript file, the run thru Acrobat to produce a PDF.)

I'd heard of doing this with PS files but couldn't get it to work. Are
there special requirements on the ps files?

Ted

I lurked on the PostScript group and begged assistance. The trick is
in the line above beginning "copy..."

header.ps and footer.ps set and reset magical things to allow
concatenation of the files listed in between....


header.ps:


%%
%% First things first, we set up the letter tray. Of course
%% if you wanted another tray, you could change this...
%%
[{
%%BeginFeature: *PageSize Letter
statusdict /lettertray get exec
%%EndFeature
} stopped cleartomark

%%
%% Windows drivers stick a 'control-d' at the end of jobs. This causes
%% many interpreters to think its the end of job (hang over from
serial
%% communication days). So, we define an operator called /4 which does
%% nothing.
%%
(\004) cvn {} bind def

%%
%% lettertray does different things on different interpeters. On Jaws
%% it just changesd the page size, on Adobe it seems to erase the page
%% too. Since we've already set it up once, its safe to zap the
%% definition.
%%
statusdict begin /lettertray {} bind def end

%%
%% Now we store the *original* definitions of the operators we are
%% about to change, in case we need them...
%%
/Mysetpagedevice /setpagedevice load def
/Myshowpage /showpage load def

%%
%% Now, we make sure that the job can't change our setup, which might
%% cause graphics state resets and other embarrasments.
%%
/setpagedevice {pop} bind def

%%
%% we redefine showpage so that it does nothing, this means that the
%% next 'page' will overlay the current page.
%%
/showpage {} bind def



footer.ps:


%%
%% Lastly we emit the *original* showpage definition to 'show' the
page
%%
Myshowpage



I'll look back some years thru my notes and see if I can't provide
proper attribution to the original author.

Enjoy.

...Jim Thompson

Hi Jim,

Funny how things go. When you first posted this trick, I had absolutely
no need to concatenate postscript files. Then, a couple of days later,
a very urgent need suddenly materialized!

I tried your trick and several others, but they would not work on my
system. In case others also run into problems, here's another method
recommended by Adobe. They mention this method may help reduce the
overall file size by merging the font tables into a single table,
instead of having multiple copies when files are simply concatenated.

This method uses a postscript file to call a routine in Adobe
Distiller. One the routine is defined, the list of desired postscript
files is added and the file is saved as a .ps

You can put the pages in any desired order. For example, I found
sorting them in reverse order greatly simplified printing.

Here's the Distiller routine:

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

%!
% PostScript program for distilling and combining multiple PostScript
% files. When embedding font subsets, it is highly recommended you use
% this technique to distill multiple PS files so only one font subset
% is used for each font.

/prun { /mysave save def % Save before running this file
dup = flush % Shows name of PS file being run
RunFile % Calls built-in Distiller procedure
clear cleardictstack % Cleans up after PS file
mysave restore % Restores save level
} def

% Here's the list of files to concatenate. I found the full path is
% needed. Note the double backslash used as a separator.

(f:\\0pera\\cache\\page01.ps) prun
(f:\\0pera\\cache\\page02.ps) prun
(f:\\0pera\\cache\\page03.ps) prun
(f:\\0pera\\cache\\page04.ps) prun

% INSTRUCTIONS
%
% 1. Locate all PostScript files to be distilled.
%
% 2. Make a copy of this file and give it the name you want to have as
% the prefix for the resulting file. For example, you could name this
% file MyBook.ps.
%
% 3. Include a line for each PostScript file to be run using the
% pathname syntax appropriate for the platform running Acrobat
% Distiller:
%
% Macintosh pathname syntax: (File.ps) prun
% Windows pathname syntax: (c:\\mydir\\file.ps) prun
%
% 4. Load this file in Acrobat Distiller. It will automatically
% execute and produce a pdf with the same prefix.

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

Mike Monett

 

[Greg]

Hi,
I found RDP on XP to be by far the fastest remote software I know,
especially on slow connectons and slow PCs (controlling a XP2600+ from
a P133 laptop through WLAM with big distance (only 2MBit rate).
Is radmin really faster than RDP on such an old machine running Win98?
Greg

 

[Blair P. Houghton]

Michael A. Terrell <mike.terrell@earthlink.net> wrote:

He was suposed to write a letter that was to be read at the
re-dedication of the local Veterans park. He had months to do it, but
last Saturday morning (Aug, 20th, 2005) rolled around for the big event
after years of planning and hard work to raise the money, and it still
hadn't arrived.

I was there as a local Republican tried to make a joke out of it,
blaming the US post office, but there were a lot of pissed of Veterans.
I guess that his vacation in Crawford and meeting with Lance Armstrong
at his ranch were more important than his word to the 45,000+ veterans
of this county. At least the three other politicians who made promises
had the honor to deliver their letters, on time.

Classic Bush.

The boy's a juvenile delinquent gussied-up by political
fixers because he fit the suit.

It's tragic watching people redefine democracy to justify
the lies they're sucked into.

--Blair
"We can do better."

 

[Bob Monsen]

Michael A. Terrell wrote:

Jim Thompson wrote:

Gee, Michael, are you angry yet ? PLONK!

...Jim Thompson



Now that is almost funny. He wants to know if I'm angry, then
"Plonks" me. I guess you can handle a loosing argument.

The fact that Bush doesn't give a f**k about the troops shouldn't be
news to you. He is too busy chopping wood and biking with Lance
Armstrong to attend their funerals, and we still have a hard time
getting adequate armor for them, despite the billions we've devoted to
this cause. A few words from Bush would make adequate armor a national
priority, and it would happen immediately. That in turn would decrease
the death rate, which could turn around the current downward trend in
those volunteering.

Why doesn't he do this? Why did he yammer away on Social Security while
our men and women were dying preventable deaths? I think the answer is
clear. He doesn't care, and never has.

--
Regards,
Bob Monsen

If a little knowledge is dangerous, where is the man who has
so much as to be out of danger?
Thomas Henry Huxley, 1877

 

[Chuck Harris]

Jim Thompson wrote:

The Democrat party ISN'T "craven and corrupt"?

Give a listen, as I do, to Air America, everyday from 10AM until
4PM... UNREAL how craven and corrupt and IGNORANT lefties are.

...Jim Thompson

Did you notice how quiet things got on the bullet proof vest issue?

On another note, I found this somewhere:
----------------------------------------------------------------
The European Commission has just announced an agreement whereby English
will be the official language of
the European Union rather than German, which was the other possibility.

As part of the negotiations, the British Government conceded that
English spelling had some room for improvement and has accepted a 5-
year phase-in plan that would become known as "Euro-English".

In the first year, "s" will replace the soft "c". Sertainly, this will
make the sivil servants jump with joy.

The hard "c" will be dropped in favour of "k". This should klear up
konfusion, and keyboards kan have one less letter.

There will be growing publik enthusiasm in the sekond year when the
troublesome "ph" will be replaced with "f". This will make words like
fotograf 20% shorter.

In the 3rd year, publik akseptanse of the new spelling kan be expekted
to reach the stage where more komplikated changes are possible.

Governments will enkourage the removal of double letters which have
always ben a deterent to akurate
speling.

Also, al wil agre that the horibl mes of the silent "e" in the languag
is disgrasful and it should go away.

By the 4th yer people wil be reseptiv to steps such as replasing "th"
with "z" and "w" with "v".

During ze fifz yer, ze unesesary "o" kan be dropd from vords kontaining
"ou" and after ziz fifz yer, ve vil hav a reil sensibl riten styl.

Zer vil be no mor trubl or difikultis and evrivun vil find it ezi tu
understand ech oza. Ze drem of a united urop vil finali kum tru.

Und efter ze fifz yer, ve vil al be speking German like zey vunted in ze
forst plas.
-------------------------------------------

-Chuck

 

[Richard the Dreaded Liber]

On Mon, 19 Sep 2005 20:45:34 -0700, John Larkin wrote:

On Tue, 20 Sep 2005 02:50:04 GMT, Blair P. Houghton <b@p.h
wrote:
....
And when the managers forget that they're no better than the people
they
manage, it creates unfair divisions between classes, with managers
assuring that those below them will always have less opportunity
than
they themselves had.

Equally bizarre. How did the managers get to be managers, if the
older
managers denied them opportunities?

By already being in the old-boy network. Being born into the ruling

class. They don't really "forget" that they're no better than anybody
else - they're raised truly believing that they're better than others,
which is much more insidious.

Thanks,
Rich

 

[Spehro Pefhany]

On Tue, 20 Sep 2005 15:29:02 GMT, the renowned Richard the Dreaded
Libertarian <say_greiss@example.net> wrote:

On Mon, 19 Sep 2005 20:45:34 -0700, John Larkin wrote:

On Tue, 20 Sep 2005 02:50:04 GMT, Blair P. Houghton <b@p.h
wrote:
...
And when the managers forget that they're no better than the people
they
manage, it creates unfair divisions between classes, with managers
assuring that those below them will always have less opportunity
than
they themselves had.

Equally bizarre. How did the managers get to be managers, if the
older
managers denied them opportunities?

By already being in the old-boy network. Being born into the ruling
class. They don't really "forget" that they're no better than
anybody
else - they're raised truly believing that they're better than
others,
which is much more insidious.

I don't think that people are really "born into" a class in the
US/Canada. But there is a certain amount of segregation due to income,

there are quite visible class markers (though few want to admit it)
and upper-middle class children are raised with a different set of
expectations than children of blue collar or clerical workers, both
deliberately and due to exposure to their parents' set of friends.
I've heard several 10-year-olds talking about becoming lawyers, for
example. When small children are taking to visit campuses of the
universities their parents attended, to the open houses, and so on,
the question in their minds is "which university will I go to?" or
"should I study medicine, business, law, or science", not "should I
drop out of high school and party?". High effective income taxes and
low effective estate taxes probably discourage mobility, as does high
fertility for the poor.

But anyway, only so many people can make it into the top 20%, and the
rest of the 80% will lose out, for reasons of merit or because of
other advantages they've had available. I think a fair proportion of
kids here in Toronto who are in private schools are there not because
of snobbishness or because they are gifted and the public school
system is not good enough for them, but because they are struggling a
bit with their studies and their parents don't have a problem shelling
out $10K, $20K or more a year per kid to give them a bit of a leg up.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the
reward"
speff@interlog.com Info for manufacturers:
http://www.trexon.com
Embedded software/hardware/analog Info for designers:
http://www.speff.com

 

[John Woodgate]

I read in alt.binaries.schematics.electronic that Spehro Pefhany
<speffSNIP@interlogDOTyou.knowwhat> wrote (in
<ojc0j1lg7ev4hfnr352cga18bnhrdn1m2u@4ax.com&gt about 'Great Movie
Line
from an Old Bob Hope Movie', on Tue, 20 Sep 2005:

I think a fair proportion of kids here in Toronto who are in private
schools are there not because of snobbishness or because they are
gifted and the public school system is not good enough for them, but
because they are struggling a bit with their studies and their
parents
don't have a problem shelling out $10K, $20K or more a year per kid
to
give them a bit of a leg up.

But isn't that the point? They aren't all that bright, but they get a

leg up socially and network-wise, and become the PHBs that make EEs
lives so difficult.
--
Regards, John Woodgate, OOO - Own Opinions Only.
If everything has been designed, a god designed evolution by natural
selection.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk

 

[John Larkin]

On Tue, 20 Sep 2005 15:29:02 GMT, Richard the Dreaded Libertarian
<say_greiss@example.net> wrote:

On Mon, 19 Sep 2005 20:45:34 -0700, John Larkin wrote:

On Tue, 20 Sep 2005 02:50:04 GMT, Blair P. Houghton <b@p.h
wrote:
...
And when the managers forget that they're no better than the people
they
manage, it creates unfair divisions between classes, with managers
assuring that those below them will always have less opportunity
than
they themselves had.

Equally bizarre. How did the managers get to be managers, if the
older
managers denied them opportunities?

By already being in the old-boy network. Being born into the ruling
class. They don't really "forget" that they're no better than
anybody
else - they're raised truly believing that they're better than
others,
which is much more insidious.


You're making that up. A manager gets stuff done by having

subordinates who are motivated, smart, and responsible. And a good
manager will find and develop anybody who has the potential.

The "class" here is the class of people who get stuff done, as
distinct from the other class whose main function is to complain about
how unfair life is.

John

 

[Anton Erasmus]

On Tue, 20 Sep 2005 15:29:02 GMT, Richard the Dreaded Libertarian
<say_greiss@example.net> wrote:

On Mon, 19 Sep 2005 20:45:34 -0700, John Larkin wrote:

On Tue, 20 Sep 2005 02:50:04 GMT, Blair P. Houghton <b@p.h
wrote:
...
And when the managers forget that they're no better than the people
they
manage, it creates unfair divisions between classes, with managers
assuring that those below them will always have less opportunity
than
they themselves had.

Equally bizarre. How did the managers get to be managers, if the
older
managers denied them opportunities?

By already being in the old-boy network. Being born into the ruling
class. They don't really "forget" that they're no better than
anybody
else - they're raised truly believing that they're better than
others,
which is much more insidious.


I just heard a little snippet of info on the radio. Apparently some

research has been done in the USA, and they have found that many
succesful CEOs, Lawyers and Stock Brokers are Function Phsycopaths.

Regards
Anton Erasmus