How to perform pole zero analysis with spice3f?

  • Thread starter hugocoolens@gmail.com
  • Start date
hugocoolens@gmail.com schreef:
I'm trying know to plot the pole zero diagram like this:
know --> now
source inputfile
run
plot pole(1) pole(2) ylimit -1 1 xlimit -10 0

I hoped to see the poles displayed with a "x" and the zero with a "o"
Unfortunately that seems not the way to do it. I do get a grid with the
correctly scaled axis but I can't distinguish the poles and zeroes on
it. Is this possible with ngspice?

regards,
hugo
Click to expand...
 
....
Hello Habib,

I have now installed Suse-Linux 10.2, downloaded NGSPICE and compiled it.
The pz-analysis runs fine with your instructions.
I compared the result of the PZ-analysis with the original circuit
response
in LTspice.

I have heard about LTSpice. Since you're running Linux, please point me
somewhere i can download/install LTSpice package. After gooooogling
LTSpice Linux, i have no precise informations about.

E1 A 0 1 0 Laplace=(s+3.33333e-1)/((s+2.61803)*(s+3.81966e-1)) The
Laplace version with the values from the PZ-analysis match perfectly the
result
from the circuit with the resistors and capacitors. (The difference is
only a contant
factor of 3 in the absolute amplitude.) I also tried a more difficult
example with R1 replaced by an inductor with 1H. The result from the
pz-analysis also matched the result from the circuit.

Habib, again thanks for your outstanding help.

Since i'm using ngspice for years, i'm please to help ng-spice users.

Best regards,
Helmut


Habib
Click to expand...

Hello Habib,

LTspice can be used with the Wine-"emulator" on every Linux-PC with
any x86 processor.

1. Download the installation file swcadiii.exe into any directory.
http://www.linear.com/designtools/softwareRegistration.jsp

2. Installation
$ wine swcadiii.exe

Enter an installation directory if you were asked during installation.
You will get an icon of the LTspice program on your desktop.

3. Running LTspice
Ltspice can be started now if you click the icon or if you start it in a
terminal.
$ wine scad3.exe


Help doesn't work
-------------------
The help doesn't work under Linux. Therefore you can download a PDF-manual.
http://ltspice.linear.com/software/scad3.pdf

Vertical text is shown horizontally
---------------------------------
If you have a Windows license too, you should add "arial.ttf" and
and "cour.ttf" from your Windows system to your Linux.

The Yahoo group for LTspice
------------------------------
http://tech.groups.yahoo.com/group/LTspice/


Best regards,
Helmut
 
Le Mon, 15 Jan 2007 19:59:15 +0100, Helmut Sennewald a écrit :

....
Hello Habib,

I have now installed Suse-Linux 10.2, downloaded NGSPICE and compiled it.
The pz-analysis runs fine with your instructions.
I compared the result of the PZ-analysis with the original circuit
response
in LTspice.

I have heard about LTSpice. Since you're running Linux, please point me
somewhere i can download/install LTSpice package. After gooooogling
LTSpice Linux, i have no precise informations about.

E1 A 0 1 0 Laplace=(s+3.33333e-1)/((s+2.61803)*(s+3.81966e-1)) The
Laplace version with the values from the PZ-analysis match perfectly the
result
from the circuit with the resistors and capacitors. (The difference is
only a contant
factor of 3 in the absolute amplitude.) I also tried a more difficult
example with R1 replaced by an inductor with 1H. The result from the
pz-analysis also matched the result from the circuit.

Habib, again thanks for your outstanding help.

Since i'm using ngspice for years, i'm please to help ng-spice users.

Best regards,
Helmut


Habib


Hello Habib,

LTspice can be used with the Wine-"emulator" on every Linux-PC with
any x86 processor.

1. Download the installation file swcadiii.exe into any directory.
http://www.linear.com/designtools/softwareRegistration.jsp

2. Installation
$ wine swcadiii.exe

Enter an installation directory if you were asked during installation.
You will get an icon of the LTspice program on your desktop.

3. Running LTspice
Ltspice can be started now if you click the icon or if you start it in a
terminal.
$ wine scad3.exe


Help doesn't work
-------------------
The help doesn't work under Linux. Therefore you can download a PDF-manual.
http://ltspice.linear.com/software/scad3.pdf

Vertical text is shown horizontally
---------------------------------
If you have a Windows license too, you should add "arial.ttf" and
and "cour.ttf" from your Windows system to your Linux.

The Yahoo group for LTspice
------------------------------
http://tech.groups.yahoo.com/group/LTspice/


Best regards,
Helmut
Click to expand...

Hi Helmut,

I have installed wine on my Debian GNU/Linux box and after install LTspice
(with wine-safe). It was very easy and LTspice looks good.

May be i will switch from Kicad/ngspice to LTspice.

So many thx Helmut,

Habib
 
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