Electronics Forum / CAD / July 2004

Sorry, but after years of using Linux and trumpeting it's advantages,
I have tried some Windows circuit board design software and quite
honestly there is really no comparison between the Windows software
and the somewhat crude, though functional, Linux software.

Can anyone tell me if there's an integrated PowerPCB/PowerLogic file
viewer available?
I've just joined a company that's using PADS and distributing design data
to those w/o access to the PADS suite via hardcopy or PDF.

Does anybody have a source or could post s spice model for a 2N5179 V/UHF
transistor?

I have Multisim 2001 Power Pro edition. For some reason I am having
dificulty simulating the 555 timer on long delays. By long I mean in
the area of 20 seconds. I am designing an astable multivibrator with a
20  second off pulse (space) and a one second on pulse (mark). I know

Anyone have a 1496 (Gilbert Cell Multiplier) Spice Model ??
I could roll my own but I'm unsure if the I/C models I have, of that
vintage, would be correct.
Thanks!

I am designing a circuit in Cadence using spectre but I want to
simulate an extermal power mos which model is not included in the
foundry kit (obviously). The mosfet is the irf3315 and the only model
I have found is a very simple model to be used in pspice. This model

OK folks... This is probably a RYFM question, but...
I'm trying to use Multisim after about 4 years of not having done any
circuit simulation.
I can't get a 555 relaxation oscillator to work, and I can't even simulate

   My daughter would like to use "Stripboard Magic" for some upcoming
course work but I have lost my copy. I have tried searching on the net
but to no avail so if anyone could tell me where I can get a copy I
would be obliged.

Wich is the best sofware for electronic simulation?

   Has anyone been able to crack ExpressSCh's proprietary
schematic format?  We have some designs trapped in that
format and we want them out.  We need them in OrCAD or
Protel.

I am having difficulty performing a transient analysis of 2N2222
phillips transistor (provided by LTspice). This is my 1st time using
LTspice ...i successfully simulated the I-V curves and load line of
the transistor with a DC sweep but doing the transient has been

I'm looking to make a model of an Avalanche Photodiode in PSpice.  I have
the student version 9.1
The way I think of it, I can have a fake digital input into the component to
trigger an avalanche as if a photon hit it, and just have the resistance be

Hi people!
Does someone here have the SPICE model of TIP41 and TIP42 transistors?
My simulator is LTSpice.
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I'm upgrading some 30 year old circuitry and need to baseline the old
design. It uses a uA711 comparator.
Does anyone have a SPICE model for it ?
Thanks

Hello people.
The SIMetrix simulator, that I am using the "Intro" version, enough for my hobby
usage, claims to support importing .slb symbol libraries from PSpice Schematics
(and, for this purpose, .sch files from Schematics).