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Reply-To: "Kevin Aylward"
From: "Kevin Aylward"
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Subject: Re: Problems with Electronics Workbench - timestep errors
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Date: Sat, 12 Oct 2002 08:34:53 +0100
NNTP-Posting-Date: Sat, 12 Oct 2002 08:34:56 BST
"The little lost angel" wrote in
> On Fri, 11 Oct 2002 17:21:42 +0100, "Kevin Aylward"
> >Enable the DC operating points, which is the blue "OP" button.
> >After the run double-click on the graph and go to the Signals tab.
> What should the graphs be?
> I searched for another AC/DC diode bridge rectifier schematic,
> rejected a few before one showed where the ground was supposed to
> be... on one end of the resistor.
> I did this on SuperSpice with a AC Sine wave generator (230V,
> 230V 50Hz, AC Value vs Amplitude what's the difference?), a preset
> diode bridge, a 1K resistor.
> The two graphs that get spit out is Transient and DC Transfer
> Characteristics. The Transient shows nothing. DC shows Mag/Real DC
> Sweep, a unitary slope from 200v/200V to 300V/300V
> I tried increasing the Transient Stop time to 1msec, since
> that's how I got something the last time. But nothing on the transient
> graph. Neither does changing the Vac to 5Khz.
> >Check the "display" "magnitude\real" onthis entry at it will display
> >the voltage (vd) accross d2
> The strange thing is I only have r1[i] and r1[p], no VD
> If I had seen vd, I would have used it a lot earlier!
> The strange thing about the graphs is they are both using the same
> thing for x/y axies...
I noted that for normal spice parts, e.g. diodes and transistor. The
bridge rectifier is a composite part so signals like above wont be
> I tried to double click on the axis in an attempt to change it
> and SuperSpice just dies on me. I restart it, it showed the older
> version schematic, I load the new one and SS basically hangs on me
> with a Server is busy message with the cancel button gray out... (I
> thought I would only see those in a browser *grinz*)
This is rare. I don't find SS crashing hardly at at all. If I get a note
of a repeatable crash, I try to fix it immediately.
This busy message is because it crashed in such a way that the current
schematics file handle is still open. I consider this an operating
system failure, since, to my knowledge, the only way to allow access to
that file again is by rebooting.
Its difficult to see what your are doing wrong without your schematic so
I have made a rectifier example, it took a couple of minutes. If you
email me, I can email it back to you. It will be in the next update.
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.
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