Fundamental Thompson Rule... learned the hard way:
"If Spice struggles to find convergence you have a bad design" :-)
On Mon, 25 Oct 2010 02:21:05 -0700, Robert Baer
wrote:
I dumped excess stuff for the sort term and set a time as short as
possible but still see step response to settling.
The 555 oscillator is "steady state" around 0.18mSec, so i start my
pulse at 0.2mSec; the output then is stable around 0.45mSec so my pulse
reverts at 0.5mSec; the result settling around 0.9mSec.
It still takes a while to run - simulator runs about 20uSec/second to
generate data.
I would like this to run perhaps 10 times faster so that i can do a
full schematic over a 100mSec or longer period of time - without having
to wait days.
Help?
What i have now:
Version 4
SHEET 1 1140 680
WIRE -240 -144 -512 -144
WIRE -928 -80 -1072 -80
[snip]
TEXT -112 256 Left 0 !K1 L1 L2 0.998
TEXT -400 328 Left 0 ;Output level set
TEXT -120 232 Left 0 ;Murata 78601/2C
TEXT -616 -312 Left 0 !.tran 0 1ms 0
...Jim Thompson
--
| James E.Thompson, CTO | mens |
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