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Update the description, new 'optran' command

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Holger Vogt 2020-05-24 15:34:53 +02:00
parent 6eff472b50
commit 5acf4fac2f
1 changed files with 23 additions and 10 deletions
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README.optran
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@ -12,25 +12,38 @@ If this fails:
If this again fails, bail out.
In tghis branch a fourth method is added:
In this branch a fourth method is added:
4) Start a transient simulation for a specific amount of time.
Keep all data local. Keep the matrix values as an
operating point for the simualtion following.
operating point for the simulation that is following.
If this fails, finally stop.
The time for transient is determined a priori. If a transient
simulation follows, choose 100 time the TSTEP value. If an ac
or noise simulation follows, take the inverted starting
frequency divided by 10 as the optran simulation time.
A new command sets the flags for transient op calculation
optran n1 n2 n3 n4 n5 n6
This command has to be given before the simulation commands
run, ac, tran, pz, or noise. Only the simulation commands will
start the (modified) op calculation. Another 'optran' will
override the previous flags.
A method to stop the op transient simulation, when all nodes
have become stable, might be desirable, but has not yet been implemented.
Step 1 may be skipped by
Step 1 (from above) may be skipped by
option noopiter
command optran n1 overrides noopiter
Step 2 may be skipped by
option gminsteps=0
command optran n2 overrides gminsteps
Step 3 may be skipped by
option srcsteps=0
command optran n3 overrides srcsteps
n4 sets the time for transient simulation.
n5 sets the step size for transient simulation.
n6 set a ramp time to ramp all indpendent voltage or
current sources until 100% is reached at opramptime.
(not yet implemented)
A method to stop the op transient simulation, when all nodes
have become stable, might be desirable, but has not yet been implemented.