From: Roger Johansson
Subject: Re: Problems with Electronics Workbench
Date: Mon, 07 Oct 2002 12:09:51 +0200
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"Kevin Aylward" wrote:
>> As far as I can see they use all the normal component symbols and
>> connect them in a very easy to read way. Connections wire-to-wire are
>> marked with big black dots, much easier to see than in other
>> schematics capture programs.
>Er....In SuperSpice you can set the connection dot size. A dot can be as
>big as the entire schematic if you so wish.
Okay, and I guess you can use normal windows colors?
I have seen other horrible examples where the circuit is drawn with
dark blue foreground on light blue background, and no user settings of
I looked at you program a few years ago, and I am now on a slow modem
so I cannot check it out now.
>> (I would prefer the international rectangle for resistors, but
>> americans should feel right at home with the squiggly line resistors.)
>In SuperSpice you can use squiggly line resistors or block resistors.
>You can also use notation like 2k2 for 2.2k
>Most Spices out there all use the Spice3/Georgia Tech XSpice engine.
>Some have done a few improvements. There is of course LTSpice, which is
>a significantly faster and has much better convergence then moset
>> The schematics capture in ewb is outstanding, the only easy to use
>> chematic capture program there is.
>This is of course, very, very debatable. I tried EWB before writing
>SuperSpice, and it was evaluations like this that were partly the
>motivation for SuperSpice. I personally, found EWB useless.
You are a professional electronics designer, I would never recommend
ewb for such purposes, but for beginners and elementary education it
is very easy to use.
Like the oscilloscope which you just drag out on the bench area and
handle with standard scope controls, instead of having to learn how to
use the different analysis windows and methods of other SPICE progs.
>> But you can use the schematic capture of ewb and export the netlist
>> into a better spics simulator, with some consideration, because the
>> netlist standard can be a bit different in different programs.
>Can you read back in the output file?
Yes. You can even import any standard netlist and get a rats nets
circuit diagram, which you can adjust manually to become readable.
It does not work good or produce any kind of readable diagram to begin
with, , but at least it works if handled carefully.
I wouldn't recommend it for complicated circuits :-)
>> In other schematics capture programs you might have to learn a new way
>> of drag-n-dropping, while ewb follows the windows standard,
>> leftclick-hold and drag to the new position, for example.
>I agree, many Spices do not follow normal windows standards, e.g. In
>some, you cannot even move components like you can the icons on the
>windows desktop. Double-clicking should bring up dialogs etc.
>As far as ease of use I would try adding new models in any product and
>compare it with SuperSpice drag and drop:-)
There are many things in superspice which I miss in other progs, so I
would consider using it if it was freeware.
You might find more success by giving away the prog and maybe even
make it an open source project, so others could help develop it and
maintain it after you have gone on to other things.
Think about Linus Thorvalds, he gave away Linux, and got incredible
fame and fortune just from the reputation.
On top of that he did something good for mankind.