Circuit Design & Simulation software?

Hello Folks,

Is there any software to (preferrable in freeware domain) build circuits & 
simulate it? I want to experiment with some simple circuits and want  to 
simulate the behavior. Like what would be the voltage or current in 
different part of the circuit, what will be the effect of adding more 
resistor somewhere in between etc.

-Neo
"What you think, so you are..."  -The Buddha

On Tuesday, in article <437a1b1f@news.microsoft.com>
     timeless_illusionN0SPAM@yahoo.com "Neo" wrote:

>Hello Folks,
>
>Is there any software to (preferrable in freeware domain) build circuits & 
>simulate it? I want to experiment with some simple circuits and want  to 
>simulate the behavior. Like what would be the voltage or current in 
>different part of the circuit, what will be the effect of adding more 
>resistor somewhere in between etc.

Google brings up lots of them but I don't know what the quality of these
are.

A paid for version that I hav seen operating well is SIMetrix

        <http://www.catena.uk.com/>

An associate who does ASIC design and other designs uses it and it does do
a lot of useful things like adding scope (volt/current) probes to any point
in a circuit.

-- 
Paul Carpenter          | paul@pcserviceselectronics.co.uk
<http://www.pcserviceselectronics.co.uk/>    PC Services
<http://www.gnuh8.org.uk/>              GNU H8 & mailing list info
<http://www.badweb.org.uk/>             For those web sites you hate

Neo wrote:
> Hello Folks,
> 
> Is there any software to (preferrable in freeware domain) build circuits & 
> simulate it? I want to experiment with some simple circuits and want  to 
> simulate the behavior. Like what would be the voltage or current in 
> different part of the circuit, what will be the effect of adding more 
> resistor somewhere in between etc.
> 
> -Neo
> "What you think, so you are..."  -The Buddha
> 
> 
look for switchercad, good and free

Stef

On Tue, 15 Nov 2005 23:00:05 +0530, "Neo"
<timeless_illusionN0SPAM@yahoo.com> wrote:

>Hello Folks,
>
>Is there any software to (preferrable in freeware domain) build circuits & 
>simulate it? I want to experiment with some simple circuits and want  to 
>simulate the behavior. Like what would be the voltage or current in 
>different part of the circuit, what will be the effect of adding more 
>resistor somewhere in between etc.

LTSpice is often recommended http://www.linear.com/company/software.jsp
BeigeBag has a free Lite version http://www.beigebag.com/demos.htm
There are several FOSS versions. Check http://sourceforge.net

-- 
Rich Webb   Norfolk, VA

"Neo" <timeless_illusionN0SPAM@yahoo.com> wrote in
news:437a1b1f@news.microsoft.com: 

> Hello Folks,
> 
> Is there any software to (preferrable in freeware domain) build
> circuits & simulate it? I want to experiment with some simple circuits
> and want  to simulate the behavior. Like what would be the voltage or
> current in different part of the circuit, what will be the effect of
> adding more resistor somewhere in between etc.
> 
> -Neo
> "What you think, so you are..."  -The Buddha
> 
> 
Tina Pro? No freeware but very cheap.

Sam

> "Neo" <timeless_illusionN0SPAM@yahoo.com> wrote in
> news:437a1b1f@news.microsoft.com:
> 
>> Hello Folks,
>> 
>> Is there any software to (preferable in freeware domain) build
>> circuits & simulate it? I want to experiment with some simple circuits
>> and want  to simulate the behavior. Like what would be the voltage or
>> current in different part of the circuit, what will be the effect of
>> adding more resistor somewhere in between etc.
>> 
>> -Neo

LTSpice seems to be the favourite. Google will find it for you.

Ian