Circuit simulation and PCB software

F

fritz

Guest
Can anyone recommend a good CAD program(s) for circuit sim (SPICE)
schematic and PCB layout ?

Preferably free or non-crippled shareware.
I only need the sim to work up to about 5Mhz or so.

Cheers !
 
On 29/01/2008 00:53 budgie wrote:
On Mon, 28 Jan 2008 04:03:12 -0800 (PST), "David L. Jones" <altzone@gmail.com
wrote:

Autotrax PCB is freeware, if you don't mind using DOS

It is quite well behaved under 98SE, and presumably would be under ME if anyone
is silly enough to be using that. In a VM under XP? Dunno.
Click to expand...



Works OK for me. :)

Bob
 
On Jan 28, 10:11 pm, "fritz" <fr...@address.com> wrote:
Can anyone recommend a good CAD program(s) for circuit sim (SPICE)
schematic and PCB layout ?

Preferably free or non-crippled shareware.
I only need the sim to work up to about 5Mhz or so.

Cheers !
Click to expand...
LTspice is a very popular simulator:
http://www.linear.com/designtools/software/index.jsp

Autotrax PCB is freeware, if you don't mind using DOS
http://www.altium.com/Community/Support/Downloads/

Dave.
 
On Mon, 28 Jan 2008 04:03:12 -0800 (PST), "David L. Jones" <altzone@gmail.com>
wrote:

Autotrax PCB is freeware, if you don't mind using DOS
Click to expand...
It is quite well behaved under 98SE, and presumably would be under ME if anyone
is silly enough to be using that. In a VM under XP? Dunno.
 
"fritz" <fritz@address.com> wrote in message
news:fnkdbl$a59$00$1@news.t-online.com...
Can anyone recommend a good CAD program(s) for circuit sim (SPICE)
schematic and PCB layout ?

Preferably free or non-crippled shareware.
I only need the sim to work up to about 5Mhz or so.

Cheers !
Click to expand...
LTSpice is free from Linear Technology and there is a very good 3rd part
Yahoo group for questions and answers ans spice models when you register.

KICAD is an open - source schemati capture and PCB program....

Google these for down loads
Joe
 
"fritz" <fritz@address.com> wrote in message
news:fnkdbl$a59$00$1@news.t-online.com...
Can anyone recommend a good CAD program(s) for circuit sim (SPICE)
schematic and PCB layout ?

Preferably free or non-crippled shareware.
I only need the sim to work up to about 5Mhz or so.

Cheers !

David has the right idea. I, too, recommend LTSpice. As good as you'll get,
Click to expand...
at the right price: 0$

For what (little) it's worth,
.... Steve
 
Z.A wrote:
On Jan 31, 4:21 pm, "John Skinner" <n...@thiswontwork.com> wrote:

"fritz" <fr...@address.com> wrote in message

news:fnkdbl$a59$00$1@news.t-online.com...> Can anyone recommend a good CAD program(s) for circuit sim (SPICE)

schematic and PCB layout ?

Preferably free or non-crippled shareware.
I only need the sim to work up to about 5Mhz or so.

Cheers !

David has the right idea. I, too, recommend LTSpice. As good as you'll get,
at the right price: 0$

For what (little) it's worth,
... Steve


Hi

I want to simulate a circuit consisting of PowerPC processor and FPGAs
as main components. Is it possible to verify the schematic and
functionality of all the components in some CAD tool like LTSpice etc
before getting all the things stuffed on PCB? or i am thinking
science fiction ?

Regards
Zubair
Click to expand...
electrically there is very little to simulate - unless, of course,
things are going very fast, in which case ringing, transmission line
behaviour, termination etc. can be fairly easily simulated (e.g. using
IBIS models).

SPICE pretty much models things at the transistor level, and there are a
LOT of transistors in a power PC, or an FPGA. dont event think about it.

FPGA tools invariably have simulators, which are behavioural. likewise
with microprocessor toolsets. this is all you can realistically do.

Cheers
Terry
 
On Jan 31, 4:21 pm, "John Skinner" <n...@thiswontwork.com> wrote:
"fritz" <fr...@address.com> wrote in message

news:fnkdbl$a59$00$1@news.t-online.com...> Can anyone recommend a good CAD program(s) for circuit sim (SPICE)
schematic and PCB layout ?

Preferably free or non-crippled shareware.
I only need the sim to work up to about 5Mhz or so.

Cheers !

David has the right idea. I, too, recommend LTSpice. As good as you'll get,
at the right price: 0$

For what (little) it's worth,
... Steve
Click to expand...
Hi

I want to simulate a circuit consisting of PowerPC processor and FPGAs
as main components. Is it possible to verify the schematic and
functionality of all the components in some CAD tool like LTSpice etc
before getting all the things stuffed on PCB? or i am thinking
science fiction ?

Regards
Zubair
 
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