Electronics Forum / CAD / December 2005

Is there anyway to (semi)automatically save revisions of schematics (and
boards) in eagle?
thanks
- jim

  Someone had recommended PC123; a bit large for POTS but doable.
  BUT.
  It is impossible to get useable documentation.
  After a longwinded download, Adobe Acrobat reader complains that it

After running some simple circuits within Capture/PSPICE 10.5,  I get
the OrCad's Capture cannot create a PSPICE netlist for the PSPICE
engine to simulate.  If you go into the Session Log, it days "Unable to
initialize pspice explorer while creating netlist file."  If you try to

I have added a library of  Tube to Orcad 10.3.
I have runned simulation of a my circuit that contain a part of tube library
and I have error undefined subcircuit.
I have added the library as global and now I have errors of node floating.

Is there anyway that I can use 'capture' to place RMS current 'markers'
on the circuit? also can i get multiple y axis' automatically. what I'm
having to do now is to setup the probe display to view what I need....
every time i do a simulation, which is quite laborious. In previous

Hi to all,
Looking for PCB Signal integrity simulation software (Hyperlinks
Equivalent).
Thanks,

I'm trying to get info to realize a custom system.
In particulary I need to find and buy a reader module with antenna to
integrate in my project.
The system need to read UHF passive tag (860-900MHz) (like

how do i get a circuit into the 'simulation hierarchy'...if it isn't.
many thx
Danny

You have already mixed up the ingredients... including the yeast.
In order for your yeast to go yum yum on what it might find it needs some
oxygen to eat it and convert things to carbon dioxide plus babys.
Kneading introduces the atmosphere(with oxygen) to your dough.

primary 0.01ohm and 10mH, secondary 40000mH. secondary connected to
different rectifier types. in every damn case the voltages are exactly
as predicted. what i can't understand is why the primary current dc
value tendes to rise to ridiculous values of kAmperes over the

I'm currently working on a board design and I have to interface two VLSI
chips to each other that don't have exactly compatible level
characteristics. To be more precise I have a differential CML output of U(t)
= 1.8V +/- 0.400V * rect(t) being terminated 50 Ohm to Vref and a

Hi community,
I got a problem you might be able to assist me in solving. I downloaded
several HSPICE models for the Xilinx Virtex-II Pro FPGAs from the Xilinx
homepage. They are stored in a format I don't know: *.inc. The included

I was wondering which CAD IC design software packages were popular
within the market place?  I've been using Altera Quartus II and know of
Protel but which packages have the best reputation and therefore are
the most popular?

Can someone please tell how RAW/WAW dependencies in a memory are
modeled in Liberty?
Thanx,
Abhi.

I use Orcad (capture 9.2). I designed a circuit with VSIN as the
source. I want to see the result of some parameters by changing the
amplitude of the VSIN (Vi in my circuit). I need to use parametric
sweep. How I can define the sweep variable? If I use VDC in place of