Re: Wanted: LM-709 (Spice model) National Op-Amp


"Mike Engelhardt" <nospam@xxxxxxxx> wrote in message
news:tHhZe.2662$G64.165@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Paul,
>
>> I do agree if there is no sanctioning body like IEEE or
>> W3C or anybody to validate the claim for an improved
>> engine, one has to be more critical. How can one judge
>> the advance of proprietary standards unless you guys
>> start opening up your code so the community can see the
>> difference in the source? Sorry if you feel I am posting
>> garbage, I am trying to be positive.
>
> Well, I'm not trying to be negative you do post garbage.
> You can't evaluate a simulator's performance by looking at
> the source code and you should know better. I don't know
> if you're deliberately dishonest or ignorant. LTspice is
> close to a half million lines of code. You have to compile
> it and test the program to see its performance. I'm guessing
> your comment is more dishonest than ignorant because it

I think you may be a bit paranoid here. It seems pretty clear that that
Paul was simply mistaken. I don't see that most people lie in this way,
for the most part it is always a genuine mistaken belief.


> But it's not very hard to understand why LTspice runs faster
> and is more accurate then other/earlier SPICE engines. I
> occasionally give 4hr seminars that explain in some detail
> what one needs to do to make a better SPICE engine. People
> are surprised that I reveal all, but the trick is I tell what
> one needs to do, not how to go about writing that code.

Why not post/write some papers, e.g ieee.


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


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