From: sademade (sademade_at_yahoo.com)
Date: 2001-12-22 06:15:59
> Yes. It is the free version (limited to 50 parts and max. 3 op-amps)
> (see Microsim8 Eval zip-file in attachment)
> I have zipped the most complete schematic. However it is
> somewhat inaccurate now, because the input HP
> is not working as intended.
TU.
> They are rather restricted and I am not very experienced in
> simulations. So I had to use voltage controlled voltage
> sources to simulate OPAMPS etc.
Me neither, only thing I learned that when I tried to
simulate multi-schematic analog design that include
amps and analog muxes, with Protel built in spice, that
while each sheet worked ok separately and even when there
was NO feedback from the sheets back, only forward feeding,
from prior ones, and even when the further one worked ok
when they received input exactly similar to the ones that
the earlier ones would generate, and impedances etc were
matched ok, the simulator became unstable when too many
parts were simulated simultaneously, as certain parts just
simply stopped operating at all. Learned that the simulated
circuit better be small enough, or the simulations at least
with Protel's version of Berkely spice became worthless, of
course, problem could have been in me, but other people were
commenting similar trouble of that particular spice. CMaker
spice worked better, but even that is not as good as Microsim,
at least the demos I tried, seemed to work best on Microsim.
> I do not know about such free available tools.
> - always thought they were part of some professional
> PCB router packages and way beyond my budget.
Same here, at least, now that am disabled. Used to be
able to purchase some tools when working, as they were
increasing income, took only few months of income to
pay those off, and they generated their price back, but
these days, no income from work, so no more tool purchases
for a while, yet, there are nice demo versions of almost
all proggies these days, including some board emc sims,
such as Omega, you can eval 30 days, and often, one can
pull of small hobby projects nicely within 30 days, and
use the tools, but, have not found good analog board sim
demo or no demo.
> Yes - and with restrictions but with a nice GUI.
The circuitmaker also has nice GUI, very nice actually,
but the spice is not the same class as Microsim.
> Perhaps we can compile some routing guidelines here.
I appreciate the rules you provided already, and added
some questions, that bother me as I do not know enough
yet.
Thank you for putting with my
questions ! Sade M.
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:35 BST