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[Don]

John Larkin <jjlarkin@highSNIPlandTHIStechPLEASEnology.com> wrote in
news:3ncig0tvlcfakudflhn47tl49aigu6um0g@4ax.com:

On Thu, 29 Jul 2004 03:46:30 GMT, Don <dobrien25SPAM@attbi.com> wrote:

Al Gore - enlisted August 1969; sent to Vietnam January 1971 as an
army journalist, assigned to the 20th Engineer Brigade headquartered
at Bien Hoa, an airbase twenty miles northeast of Saigon.

Right. He even had a personal bodyguard assigned to keep the Senator's
son safe.
Cite your source please. This is news to me. I'd also like to point out,

since many think that being a journalist would be safe, that during the
famous TET offensive of 1968, the viet cong(bad guys) were running down
the corridors of the USA embassy,shooting people.
http://www.vwam.com/vets/tet/tet.html

Senator John Kerry, Lt., U.S. Navy 1966-70; Silver Star, Bronze Star
with Combat V, and three awards of the Purple Heart for his service in
combat


Two of which may well have been self-inflicted. That story promises to
be amusing.

Anti-Kerry people always complain about bogus Purple Heart medals,
but never the silver and bronze stars. Very interesting.

At least his brief Vietnam experiences are well documented, in nicely
re-enacted 8mm home movies.

W is more humble. He describes himself as a "not very good jet pilot."

John

 

[Activ8]

On 27 Jul 2004 15:50:50 -0700, mehran gupta wrote:

Definition of a Republican vs Democrat:

A man in a hot air balloon realized he was lost. He
reduced altitude and spotted a woman below.
He descended a bit more and shouted, "Excuse me,
can you help me? I promised a friend I would meet
him an hour ago, but I don't know where I am."
The woman replied, "Your are in a hot air balloon
approximately 30 feet above the ground.
You are between 40 and 41 degrees north latitude
and between 59 and 60 degrees west longitude."

"You must be a republican," said the balloonist.

"I am," said replied the woman. "How did you know?"

"Well," answered the balloonist, "everything you
told me is technically correct, but I have no idea what
to make of your information, and the fact is I am
still lost. Frankly, you've not been much help so far."

The woman below responded. "You must be a
democrat."

"I am," replied the balloonist, "but how did you
know?"

"Well," said the woman, "you don't know where you
are or where you are going. You have risen to where
you are due to a large quantity of hot air.
You made a promise which you have no idea how to
keep, and you expect me to solve your problem.
The fact is you are in exactly the same position you
were in before we met, but now, somehow, it's my
fault."

....Could also be the difference between liberal and conservative....

Mehran

Or the woman is an engineer and the baloonist a manager.
--
Best Regards,
Mike

 

[Activ8]

On Tue, 27 Jul 2004 12:21:50 -0400, Ben Bradley wrote:

In an "OT" post to:
alt.binaries.schematics.electronic,
sci.electronics.cad,
sci.electronics.design and
sci.electronics.misc,
Jim Thompson <thegreatone@example.com> wrote:

Robin William's Plan for Peace..........

I see a lot of people yelling for peace but I have not heard of a plan
for peace. So, here's one plan.

1) The US will apologize to the world for our "interference" in their
affairs, past & present. You know, Hitler,

Oh well, so much for this thread...

A thorough understanding of Godwin's law.
--
Best Regards,
Mike

 

[Paul Burridge]

On Tue, 27 Jul 2004 12:21:50 -0400, Ben Bradley
<ben_nospam_bradley@mindspring.com> wrote:

In an "OT" post to:
alt.binaries.schematics.electronic,
sci.electronics.cad,
sci.electronics.design and
sci.electronics.misc,
Jim Thompson <thegreatone@example.com> wrote:

Ugh! I might have known Thompson was behind yet another OT political
rant, spammed all over Usenet as usual. I keep killing this thread;
its originator is already killed, yet it keeps coming back. :-(
--

"What is now proved was once only imagin'd." - William Blake, 1793.

 

[Jim Thompson]

On Fri, 30 Jul 2004 10:00:52 +0100, Paul Burridge
<pb@notthisbit.osiris1.co.uk> wrote:

On Tue, 27 Jul 2004 12:21:50 -0400, Ben Bradley
ben_nospam_bradley@mindspring.com> wrote:

In an "OT" post to:
alt.binaries.schematics.electronic,
sci.electronics.cad,
sci.electronics.design and
sci.electronics.misc,
Jim Thompson <thegreatone@example.com> wrote:

Ugh! I might have known Thompson was behind yet another OT political
rant, spammed all over Usenet as usual. I keep killing this thread;
its originator is already killed, yet it keeps coming back. :-(

Burridge, Why is it that you don't have brains enough to go over to
*.*.basics where you belong ?

 

[Paul Burridge]

On Sat, 31 Jul 2004 10:29:43 +0200, "Helmut Sennewald"
<helmutsennewald@t-online.de> wrote:


Hi Helmut,

LTSPICE has a great GUI and is optimized for easy and and really
fast drawing. I like it. The whole GUI is really well organized.

I agree entirely.

The GUIs in other CAD programs with their thousands toolbar icons
are a nightmare.

Certainly not ideal for running on notebooks, that's for sure. But
Kev's front end is actually pretty good, to give credit where it's
due. I wouldn't put the SS GUI in the "nightmare" category - unlike
its author.
--

"What is now proved was once only imagin'd." - William Blake, 1793.

 

[Kevin Aylward]

Helmut Sennewald wrote:

"Kevin Aylward" <salesEXTRACT@anasoft.co.uk> schrieb im Newsbeitrag
news:TZHOc.27231$28.11119@fe1.news.blueyonder.co.uk...
stan wrote:
I am presently using SwitcherCAD III and am having problems with
rotating objects. The rotate command in the edit menu is always
grey, even if I have selected the object. The ctrl-R shortcut
doesn't work too.

Can anyone tell me how to rotate the object?


LT Help:
*****
...Hence, when you wish to move, mirror, rotate, drag or delete
objects, first select the move, drag or delete command.
*********
(I read in the help menu about something called "object sprited"
What does that mean? How do I use this to activate the rotate
command in the edit menu?)


Hello Stan,
I have answered the same question a few minutes ago in the
LTSPICE users's group at Yahoo:
http://groups.yahoo.com/group/LTspice


Hello ...,
you simply forgot to go into move mode.

Instructions follow:

1. click on "Move", this is the "full hand" icon on the top toolbar

2. click on the component you want to move/rotate/mirror or select
many by clicking and dragging a box around it.

3. Press "<ctrl> and r" for rotate or "<ctrl> e" for mirror of the
selected item.
It is mandatory to first press the <ctrl> key and keep it down and
then press the r or e key!!!

Best regards,
Helmut

PS: It works this way on ten thousand other PCs. If it doesn't work,
then your <ctrl> key has a defect.


Stan, take the small learning curve with LTSPICE and you will
never miss it.


LTSpce is completely nonintuitive regarding how its GUI actually
operates for tasks like this. Better GUIs allow, for example,
SuperSpice, "move mouse over component", press the "r" key. Guess how
you Mirror or Flip or even delete components


Hello Kevin,
I fully disagree!
LTSPICE has a great GUI and is optimized for easy and and really
fast drawing.
I like it. The whole GUI is really well organized.

Well, we all have our own opinions. Every time I have a go at LTSpice
for drawing, it comes across as so cumbersome. It just don't do what one
expects it to do.

The GUIs in other CAD programs with their thousands toolbar icons
are a nightmare.

I ceratinly agree that some other spices are much harder to use than
LTSpice.

Kevin Aylward
salesEXTRACT@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.

 

[Chaos Master]

Paul Burridge caused an illegal operation in module
<lssmg09mf2s4aq9efdi3925gnvdt9vndhv@4ax.com> at pb@notthisbit.osiris1.co.uk
and will be closed:

The GUIs in other CAD programs with their thousands toolbar icons
are a nightmare.

Certainly not ideal for running on notebooks, that's for sure. But
Kev's front end is actually pretty good, to give credit where it's
due. I wouldn't put the SS GUI in the "nightmare" category - unlike
its author.

I have played with SuperSpice on computers with LCD displays. Looks nice, but
most LCD's can only get to 1024x768... :/


[]s
--
Chaos MasterŽ, posting from Brazil. REPLY TO GROUP!
MSN: wizard_of_yendor@hotmail.com http://marreka.no-ip.com
"You touch the green wire. You get hit by 75kV.
You are electrocuted. DYWYPI? [yn]"

 

[Kevin Aylward]

Chaos Master wrote:

Paul Burridge caused an illegal operation in module
lssmg09mf2s4aq9efdi3925gnvdt9vndhv@4ax.com> at
pb@notthisbit.osiris1.co.uk and will be closed:

The GUIs in other CAD programs with their thousands toolbar icons
are a nightmare.

Certainly not ideal for running on notebooks, that's for sure. But
Kev's front end is actually pretty good, to give credit where it's
due. I wouldn't put the SS GUI in the "nightmare" category - unlike
its author.

I have played with SuperSpice on computers with LCD displays. Looks
nice, but most LCD's can only get to 1024x768... :/

I have to agree, that one wants as much resolution for SS as possible.
My monitor is set for 1280 by 1024. However, to address the prior point,
I don't have many icons on my toolbar buttons. Its letters for the first
word of what it does for most. I find icons confusing. AC DC TR OP (for
enabling different runs) seem pretty much self explanatory.

Kevin Aylward
salesEXTRACT@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.

 

[Chaos Master]

Kevin Aylward executou uma operaçăo ilegal e será fechado:

I have to agree, that one wants as much resolution for SS as possible.
My monitor is set for 1280 by 1024. However, to address the prior point,
I don't have many icons on my toolbar buttons. Its letters for the first
word of what it does for most. I find icons confusing. AC DC TR OP (for
enabling different runs) seem pretty much self explanatory.

This is a Good Thing (TM) of SS. The interface isn't full of stuff.

[]s
--
Chaos MasterŽ, posting from Brazil. REPLY TO GROUP!
MSN: wizard_of_yendor@hotmail.com http://marreka.no-ip.com
"You touch the green wire. You get hit by 75kV.
You are electrocuted. DYWYPI? [yn]"

 

[Ken Smith]

In article <7fb54666.0408030034.8dfce79@posting.google.com>,
Don Prescott <DMBPrescott@aol.com> wrote:

I can't see what all this has to do with an electronic CAD forum.
However, questions relating to the origins of the universe and what
existed before "the big bang" will probably never be answered. It is
all far, far too long ago.

You are taking it as a given that there was a big bang. That was almost
as long ago it it really happened. When you make bread, the bread rises.
If you measured the size vs time, you could project back to a time where
the bread was an infinitely dense blob of dough, just like mother used to
make.


One really nice thing about things like LT-spice is that you can put in
equations for things that are not electronic and model them too. I've had
luck with using it for thermal issues and dealing with a plasma lamp. One
of these days, I think I model the universe with it just to see what
happens.

--
--
kensmith@rahul.net forging knowledge

 

[Active8]

On Sat, 31 Jul 2004 18:04:42 GMT, Kevin Aylward wrote:

Chaos Master wrote:
Paul Burridge caused an illegal operation in module
lssmg09mf2s4aq9efdi3925gnvdt9vndhv@4ax.com> at
pb@notthisbit.osiris1.co.uk and will be closed:

The GUIs in other CAD programs with their thousands toolbar icons
are a nightmare.

Certainly not ideal for running on notebooks, that's for sure. But
Kev's front end is actually pretty good, to give credit where it's
due. I wouldn't put the SS GUI in the "nightmare" category - unlike
its author.

I have played with SuperSpice on computers with LCD displays. Looks
nice, but most LCD's can only get to 1024x768... :/


I have to agree, that one wants as much resolution for SS as possible.
My monitor is set for 1280 by 1024.

That's the minimum res with which I could comfortably use SS, IIRC.
It's what I'm set at now. SS is only *one* of the screen consumptive
apps I run, well, ran it a couple times, anyway.



--
Best Regards,
Mike

 

[Paul Burke]

James wrote:

There are two things I need in a pcb design package - easy ability to
create custom decals/footprints as I am using some very specific parts
and secondly I need to overlay a CAD drawing of the board as I need to
be VERY specific in the layout of the components. Its a double sided
board so two cad drawings would be perfect.

Products like Eagle just don't suppor this sort of thing (that I've
foudn so far)

EasyPC makes it very easy to create new footprints. There's also DXF
output for your mechanical CAD. I just wish they'd get round to
hierarchical schematics, component fixing and proper back- annotation.

Paul Burke

 

[Leon Heller]

"Christopher" <blackpack3000@yahoo.com> wrote in message
news:a993b408.0408081131.6fab411c@posting.google.com...

Hi!

Anyone know where I might be able to find a PCI pin layout?

I want to build an inexpensive card to plug into my PC. I'd like to
address the card by a specific address location and pass data using
the 32-bit PCI slot.

Any thoughts are most appreciated.

What interface hardware are you going to use? PCI is difficult to work with,
even if you buy off-the-shelf interface chips. All the PCB tracks have to be
the correct length, for instance.

Leon
--
Leon Heller, G1HSM
http://www.geocities.com/leon_heller

 

[Paul Burke]

Christopher wrote:

Hi!

Anyone know where I might be able to find a PCI pin layout?

I want to build an inexpensive card to plug into my PC. I'd like to
address the card by a specific address location and pass data using
the 32-bit PCI slot.

Here:

<http://www.techfest.com/hardware/bus/pci.htm>

You'll be as well to use something like a PLX PCI9052, it saves a lot of
work and you can be (reasonably) sure that it works (the caveat is
because some PCs, notably Compaqs, have been known to screw up on this).
But if you only want to use it yourself, you can take a note of where
the plug-and-play puts things, and choose a spare address. I really
think using the 9052 is going to be just as easy. They'll even give you
a schematic and a layout if you ask them nicely.

Paul Burke

 

[John Larkin]

On Thu, 12 Aug 2004 13:44:11 +0100, Paul Burridge
<pb@notthisbit.osiris1.co.uk> wrote:

On Wed, 11 Aug 2004 18:59:22 -0700, John Larkin
jjlarkin@highlandSNIPtechTHISnologyPLEASE.com> wrote:

RFSIM99 does nice frequency-domain analysies, in all sorts of formats
- Smith, rectangular plots, polars, tabular s-param listings, stuff
like that. It does lumped parts, transmission lines, and some active
stuff. Free, too!

It's in a box here, near the bottom:

http://home.sandiego.edu/~ekim/e194rfs01/

That's certainly one highly useful piece of artillery for the RF
designer!
I don't think it actually allows one to *extract* S- parameters
through modling a BJT, for example.

If you draw a part as a lumped equivalent schematic (ie, a Spice
model) it will give you the s-params. If you are very lucky, the part
manufacturer will give you that Spice model; few do.

I haven't had the chance to check it over in detail yet, but it seems
you have to insert already predetermined S-params from datasheets or
wherever and it will generate matching networks from there.

I think it will do that, too.

So it
doesn't actually amount to a 'virtual VNA' - or does it??

I don't entirely know what you mean by that. It will give you the
s-params of a given simulated network.

The really hard thing is to have the s-params and go backwards to a
lumped Spice model. There is some software that does this, but I don't
know of any that I can afford.


John

 

[Active8]

On Thu, 12 Aug 2004 17:34:15 -0400, Active8 wrote:

On Thu, 12 Aug 2004 13:44:11 +0100, Paul Burridge wrote:

On Wed, 11 Aug 2004 18:59:22 -0700, John Larkin
jjlarkin@highlandSNIPtechTHISnologyPLEASE.com> wrote:

RFSIM99 does nice frequency-domain analysies, in all sorts of formats
- Smith, rectangular plots, polars, tabular s-param listings, stuff
like that. It does lumped parts, transmission lines, and some active
stuff. Free, too!

It's in a box here, near the bottom:

http://home.sandiego.edu/~ekim/e194rfs01/

That's certainly one highly useful piece of artillery for the RF
designer!
I don't think it actually allows one to *extract* S- parameters
through modling a BJT, for example.
I haven't had the chance to check it over in detail yet, but it seems
you have to insert already predetermined S-params from datasheets or
wherever and it will generate matching networks from there. So it
doesn't actually amount to a 'virtual VNA' - or does it??

p.

snip

The vendor article I read has a better way to do it. Probably doable
in RFSim, too. I just looked at the moron's abse post.
--
Best Regards,
Mike

 

[Kevin Aylward]

Michael Schuster wrote:

Hello,
where can I find some infos about some limits of spice simulation? I
need it for a comparision of different simulators.

What do you mean by limits?

For example, the main error sources for a simulation are the models.
Models are pretty much independent of the simulator, although some
simulators have some minor variations on how the handle such models.

Kevin Aylward
salesEXTRACT@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.

 

[Mike Engelhardt]

Michael,

where can I find some infos about some limits of
spice simulation? I need it for a comparision of
different simulators.

Maybe you're trying to get at the trade between
accurate transistor-level simulation with a global
Jacobian as used in SPICE and partitioning solvers
and/or gate-level solvers which don't have SPICE
accuracy but the capability to simulate orders of
magnitude larger designs. You might look at the
sales collateral from vendors selling these
solvers. I remember seeing one in the Anagram
brochure. It was a 2D plot of accuracy vs.
circuit size with a regions marked that were
viable for various solver methodologies.

--Mike

 

[Ken Smith]

In article <f6742f8c.0408172247.3e578aeb@posting.google.com>,
Michael Schuster <michi@flyflaps.de> wrote:

Hello,
where can I find some infos about some limits of spice simulation? I
need it for a comparision of different simulators.

Any link or comment (especially if you've faced a certain problem) is
welcome.

Here's a few:

In general, simulators never disprove something the models assume.

Spice models usually do not sumulate behavour outside the normal operating
conditions of the part. Things like the output side characteristics of an
op-amp when Vcc is much below operating would be an example.

Thermal issues are generally not included. This can lead to missing real
life problems like thermally caused low frequency distortion.

Op-amp models often do not include things like power supply rejection.

Some models, of things like swither chips, assume that the chips ground is
connected to the global ground.

Models of noise are usually very simplified views of what really happens.


Simulator software can't really handle much of a mixed digital and analog
system. Take a system with a few op-amps, an ADC, a 512 macro cell CPLD,
a DC-DC converter, and an 8051 as an example. It is fairly hopeless
trying to model the whole thing without making so many simplifying
assumptions that your model is mostly a fairy tail.



--
--
kensmith@rahul.net forging knowledge