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The problem is that the PSpice models often don't converge very well and don't model noise correctly. That has nothing to do with Linear's opamp models, it's common to most Boyle style models. They

significant

--- In LTspice@..., Message 141, Panama Mike <panamatex@y...> wrote: < snip > > > BTW, I'm thinking of introducing opamp models that > use a different modeling methodology, similar to >

Quite apart from LTSpice, please accept a moral and ethical commendation. By living in another culture & learning its language you are promoting international understanding and respect for all

wrote: doesn't seem to Hello Arnold and all LTSPICE users. I have uploaded an example how your netlist based circuit can be converted to a LTSPICE schematic and model file. It is hopefully all

Arnold, Das freut mich. (English: Glad to hear it.) Nee, ich bin Amerikaner. Aber ich wohnte ein Jahr in Mainz. Nicht bei der Army aber auf der Uni. Das war in 1978. Man versteht meine deutsch

Hallo Helmut and Mike Engelhardt, thanks for finding and solving the +problem. My (LTspice-)World doesn't seem to collapse in the near future any more. Mr. Engelhardt, are you German? your Name is.

Helmut, The web has just been updated with a version that doesn't interpret the '+' sign as incremental from the previous version for voltage but still does for time. Thanks for pointing out the

Helmut, OK. What's happening is that the '+' sign can be used to mean incremented from the previous value. It's a PSpice convention useful for time points as in V2 1 0 PWL (0 0 +1m 1 +1m 0 +1m 1 +1m 0

wrote: Winspice3. Hallo Arnold, hier kann fast keiner deutsch, deshalb macht es wenig Sinn die Frage zus?tzlich in deutsch zu stellen. with LT-Spice I had the same problem some times ago with a model

Guten Tag, was sind das fr Fehler in LT-Spice? Gerechnet mit LT-Spice und Winspice3. Hello, what sort of errors is this in LT-Spice? The Schematic is computed with LT-Spice and Winspice3 from Mike

Sean, See the examples called wavein.asc and waveout.asc in the "educational" folder and also see help files for .wave It is very cool indeed! Brad wrote:

Hi! I too am new to spice. I heard that you were supposed to export a output-waveform to a Wav-file somehow. Can any-one tell me how? Would be cool. Cheers, Sean

Steve, I'm afraid it probably was, unless noise was dominated by the resistors of your circuit. Noise doesn't appear to be modeled in the LT2018A macro model. I think the only opamp macro model that

Thanks for the help on the Burr Brown amp. Noise analysis is a nice feature of LTSpice. It's helpful to poke around a circuit to see where noise is being generated. However, I didn't put alot of

thanks Helmut, its running ok with models downloaded from duncanamps.com thanks a lot guille --- Helmut Sennewald <helmutsennewald@...> wrote:

Reinier, Yes, the thing I have in mind would do that. Below is a list prepared for someone else who asked about this offline: I've in mind to model GBW, AOL, slew limit, voltage and current noise and

<helmutsennewald@y...> wrote: LTSpice. netlist.

wrote: symbol