From: Roger Johansson
Subject: Re: Problems with Electronics Workbench - timestep errors
Date: Fri, 11 Oct 2002 11:27:01 +0200
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"Kevin Aylward" wrote:
Trying to translate, guessing:
>Not for the graphs I don't. The graphs are *totally* automated, with
>correct and intelligent defaults.
We do not need defaults for the graphs as they are automatically
adjusted to give meaningful graphs in superspice.
It is much like a modern digital scope which often has this function,
a sort of auto-setup.
>If the runs are successful AC, DC,
>TRANS, NOISE graphs will be automatically displayed and scaled to full
>scale and show all signal identified on the schematic with test points.
>When you say AC voltage over a resistor, I believe what you *really*
>mean is a plot of the waveform in time. i.e. a voltage against time
>graph. In spice this is achieved by a *Transient* run. In this run type
>you set the specific frequency and amplitude of a time domain
>generator/source, e.g. of a Sine wave, Pulse wave etc.
Transient run = oscilloscope picture of output when the function
generator at the input is set to sine, pulse, etc..
>An "AC" run in spice is a small signal voltage/current against frequency
>graph, i.e. it frequency response. In this run type you set the "AC"
>field in a generator, usually to 1 Volt so that voltages plotted at
AC run = frequency response, or what is called a Bode plot in ewb.
>nodes are the gain referenced to that signal. The plain DC generator is
>the one usually used in SS to set both a DC value and an AC value,
>however, you can give an AC spec to the time domain generators such as
>Sine, Square, etc.
Time domain generator = function generator
Transient run = oscilloscope