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Re: .savebias command commented out


Ganesan
 

You had a floating resistor Routn1.. I connected it to outn and simulated..
I get the following skip file

* .SAVEBIAS from circuit: * C:\Documents and Settings\ganesan\My
Documents\Downloads\SaveBias Test\SaveBias Test\LT3958 05.asc

* time=0.019995
.nodeset V(vff)=-15.87393777 V(vee)=-6.001003683 V(vcc)=17.5 V(vdd)=5
V(ps1:von)=1
+ V(ramp)=1 V(ramp-)=0 V(ps1:n001)=17.5 V(ps1:n002)=5
V(ps1:n003)=-6.001065688 V(ps1:n004)=-15.89810071
+ V(vrt1)=-14.68364284 V(sgnd)=-15.8739326 V(vf1)=-14.80382612
V(vsw)=-15.64559458
+ V(vd)=-23.60401786 V(vc)=-14.2683469 V(p001)=-14.27289193
V(vss1)=-14.96836013 V(voutn)=-7.94231326
+ V(n003)=-8.587430434 V(n002)=-7.991617608 V(vccint)=-6.147890685
V(u1:n018)=-15.47457076
+ V(u1:n016)=-15.83406013 V(u1:n015)=-14.8739326 V(u1:n019)=-15.15819998
V(u1:n021)=-15.8739326
+ V(u1:n017)=-14.93106454 V(u1:n020)=-6.147711599
V(u1:n027)=-14.80381024 V(u1:n003)=-14.8739326
+ V(vs)=-15.83386799 V(u1:n007)=-14.8739326 V(u1:n001)=-14.8739326
V(u1:n004)=-8.123932601
+ V(u1:n009)=0.0967940426 V(n001)=-13.9644065 V(u1:n006)=-14.8739326
V(u1:n005)=-14.8739326
+ V(u1:n024)=-15.8739326 V(u1:n026)=-15.8739326 V(u1:n014)=-14.66120599
V(u1:n023)=-14.6739326
+ V(u1:n013)=-14.66909605 V(u1:n025)=-16.94407367 I(l1b)=1.857359465
I(l1a)=1.110787936

Where is the beef?
Cheers
AG

On 9/14/2011 1:59 PM, g.moberg wrote:

Hello All,
I have been trying to use the .savebias command to grab a starting point
for a rather lengthy transient simulation of a Linear Tech SMPS circuit.
I believe I have the correct syntax:
.savebias Skip internal time=19.999ms
to write the data to file "Skip", including internal nodes, at time
19.999ms.
However, the file is not created, and upon examination, the SPICE Error
Log shows that the .savebias command is present but is commented out. It
is highlighted in red in the word file of the error log. I have tried
numerous hacking such as deleting "internal", changing the time,
shortening the filename, but to no avail. I have been able to use
.savebias and .loadbias successfully in other circuits.
I have uploaded the required files to the "Temp" folder. Unzip the
archive and run the schematic file. Stop the simulation immediately (it
takes a very long time), and examine the SPICE Error Log near the end of
the file, and you will see the problem.
I have looked in the "files" section of the Yahoo site, and read the
"Help" section several times without discerning what the problem is.
My only thought is that it might have something to do with the encrypted
LT3958 subcircuit.
I would appreciate it if anyone could shed some light on this.
Thanks a lot.
Incidentally, if you are composing a message, don't click to another
part of the yahoo site, or you will lose your message.
Greg Moberg






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