DEFCON in LT-SPICE?

M

mukund

Guest
What does DEFCON mean when running a simulation in LT-SPICE? During
many simulations, the SPICE engine supposedly goes into DEFCON, and
the quality of the results apparently deteriorates.

Is something wrong with my circuit, or is it just that I am pushing LT-
SPICE?

Thanks,
Mukund
 
"mukund" <muxdevil.m@gmail.com> schrieb im Newsbeitrag
news:39371c4c-3b91-44ff-8906-c98a5cc2604b@u29g2000pro.googlegroups.com...
What does DEFCON mean when running a simulation in LT-SPICE? During
many simulations, the SPICE engine supposedly goes into DEFCON, and
the quality of the results apparently deteriorates.

Is something wrong with my circuit,
Click to expand...

Hello,

maybe yes.

At least LTspice has had a hard time to simulate your circuit.

or is it just that I am pushing LTSPICE?

Thanks,
Mukund
Click to expand...
You should think about a better circcuit structure or more reasonable values
in your design. Using Nano-Ohms and Tera-ohms in one circuit
for example can lead to trouble. Also some of the vendor's opamp-models
are a nightmare for every SPICE-simulator.

Best regards,
Helmut
 
On Thu, 13 Nov 2008 20:24:05 +0100, "Helmut Sennewald"
<helmutsennewald@t-online.de> wrote:

"mukund" <muxdevil.m@gmail.com> schrieb im Newsbeitrag
news:39371c4c-3b91-44ff-8906-c98a5cc2604b@u29g2000pro.googlegroups.com...
What does DEFCON mean when running a simulation in LT-SPICE? During
many simulations, the SPICE engine supposedly goes into DEFCON, and
the quality of the results apparently deteriorates.

Is something wrong with my circuit,


Hello,

maybe yes.

At least LTspice has had a hard time to simulate your circuit.

or is it just that I am pushing LTSPICE?

Thanks,
Mukund

You should think about a better circcuit structure or more reasonable values
in your design. Using Nano-Ohms and Tera-ohms in one circuit
for example can lead to trouble. Also some of the vendor's opamp-models
are a nightmare for every SPICE-simulator.

Best regards,
Helmut
Click to expand...
Depends on which DEFCON level it was...

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

{:)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine Sometimes I even put it in the food
 
Jim Thompson wrote:
On Thu, 13 Nov 2008 20:24:05 +0100, "Helmut Sennewald"
helmutsennewald@t-online.de> wrote:

"mukund" <muxdevil.m@gmail.com> schrieb im Newsbeitrag
news:39371c4c-3b91-44ff-8906-c98a5cc2604b@u29g2000pro.googlegroups.com...
What does DEFCON mean when running a simulation in LT-SPICE? During
many simulations, the SPICE engine supposedly goes into DEFCON, and
the quality of the results apparently deteriorates.

Is something wrong with my circuit,

Hello,

maybe yes.

At least LTspice has had a hard time to simulate your circuit.

or is it just that I am pushing LTSPICE?

Thanks,
Mukund
You should think about a better circcuit structure or more reasonable values
in your design. Using Nano-Ohms and Tera-ohms in one circuit
for example can lead to trouble. Also some of the vendor's opamp-models
are a nightmare for every SPICE-simulator.

Best regards,
Helmut


Depends on which DEFCON level it was...

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

{:)
Click to expand...
Duck and cover?

--
SCNR, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
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