>Jim Thomps>
>>Several Spice variants have "smoke" outputs. ALL Spice variants can
>>have macros written for them that do the same thing.
>
>Ok so far. Name some that have "smoke" outputs. Show me where to
>find the macros.
"Features/Benefits: Determines which components are over-stressed using Smoke analysis..."
That took me about a minute to find using Google. You could have easily have found it yourself before repeatedly claiming that the feature does not exist.
Come on! JosephKK wasn't "repeatedly claiming".
It's funny how Cadence can charge for such "features" when it's trivial to do with a macro in most post processors (Probe in PSpice's case).
...Jim Thompson
I'd move to suggest a "phssst ... *BANG*" output for SPICE.
Why? Your design techniques aren't adequate to avoid that ?:-)
...Jim Thompson
No, just for fun. Then again this might get into the wrong hands, of people who want phssst ... *BANG* for a not so noble reason.
You just gave me an amusing thought...
If it were possible to model failure mechanisms (and the time it takes to fail) you could examine "domino" failures.
...Jim Thompson
Seriously, this would be useful. Sometimes the field failure of a supply section (resulting in a service return) would be acceptable while the failure of a large multi-transistor RF power stage (beaucoup $$$) would not be. So it all must fail in a certain order and with good margin.
SPICE generally does not offer good failure analysis modes because most models are too simple. You can do 250V pulses with 60V FETs and such, stuff that would generate a plume of smoke in real life. The best simulation tools are still the solder iron, a good scope and a nice bottle of brewsky.
[snip]
That's why I wrote that SOAG (Safe Operating Area Gate) macro to make sure I didn't exceed "hot" electron limits for a very thin gate process.
The really cute part of my own design bag-a-tricks are all the macros AND special-function models (testability functions) that I've written.
...Jim Thompson
I did one chip and part of some others where we exceeded electo-migration limits, big time, simply because we ran out of real estate. When the gasping and choking had stopped I explained that it would not have to live more than a few hours ... "Oh, ok, alright then. But we'd need that in writing."
Yep, the bag-o-tricks is what makes consultants valuable.
Naw. Because his sound effects are *superb!*
Ed
So Joerg is into noise ?:-)
...Jim Thompson
We shall only make joyful noises. Sez our pastor :-)
"The best way to spread Christmas cheer is singing loud for all to hear!" -- Buddy the Elf
As you "don your gay apparel"?
I remember hearing that when I was a kid ;-)
...Jim Thompson
Who is this "Don" fellow ?:-)
...Jim Thompson
can
Don't know, but apparently he's your drag duds.
Can't do that since I'm not gay :-)
Well, I really did push to get some sound effects added to the Smoke indicator... 8-)
Charlie
I have been spanked for the error. I just have not found it intrinsic in any package that i have used. To bad i cannot afford the big ticket stuff for personal use.
Mit der Dummheit kaempfen Goetter selbst vergebens. --Schiller (from "Die Jungfrau von Orleans")
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