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Re: gEDA-user: Google Summer of Code on gEDA Webpages
Werner Hoch wrote:
>Hi Ben,
>
>On Saturday 10 March 2007 22:47, Ben Jackson wrote:
>
>
>>On Sat, Mar 10, 2007 at 09:53:07AM +0100, Werner Hoch wrote:
>>
>>
>>>I'm currently drafting a better spice integration into gschem.
>>>Maybe that could be a project, too.
>>>
>>>
>>Anyone who is thinking of improving a spice GUI has got to try
>>Linear Technology's free SwitcherCAD (aka ltspice). It's the nicest
>>spice I've ever used. It's a better schematic entry program than
>>most, too (and that would include Eagle and gschem).
>>
>>
>
>I've played with LTSpice an hour.
>
>Things I like:
> * the current and voltage probing (visible marks are missing)
> * all entries (simulations and voltage sources) are done with dialog
> widgets and also printed in plain text.
> * changing the model of a diode or transistor
> * the property dialog for each circuit element (right mousebutton)
>
>Things I don't like:
> * schematic entry (selecting, moving, ...)
> * only one simulation at a time.
> This is o.k. for tinkering, but not for real work. I hate it when
> using PSpice (schematics) at work. You can't split your workflow into
> entry, simulation and postprocessing with it.
>
>Regards
>Werner
>
>
>
While LTSpice can be ease at first approach I've found:
- building your own devices (subcircuits which have their own symbols)
can be tedious. You have to do things in two or three places.
- the simulator has had some serious convergence problems (using the
models for some of their own switch mode power supply controllers!). I
keep an older version of the program around just in case I update to a
broken version.
Joe T
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