SPICE software

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SPICE software

Postby Brian M » 20 Apr 2011, 09:22

I've tried out LT spice a couple of times. It seems ok for signal tracing, but I'm more interesting in simulating frequency response of a circuit. If there are variables (like potentiometers) in the circuit it's a pain to set up correctly, and I don't think I've ever seen a result that looked correct when graphed (probably user error) The shortcut keys are also really annoying. Come on, control Z should always be undo. :roll:

Any suggestions for something a bit more user friendly that is either free or affordable? I don't need anything super powerful.
I downloaded the TINA demo, which looks promising (uses shortcut keys that make sense) but the full version is $480.
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Re: SPICE software

Postby deltafred » 20 Apr 2011, 09:42

I use QUCS running under Ubuntu. As with most things Linux the user manual is 'make it up as you go' but once you download a few examples and see how other people have done things it starts to get a lot easier. It is free.

My trouble is I only use it every few months and I have forgotten most of it each time (it's an age thing).

QUCS - Quite Universal Circuit Simulator.
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Re: SPICE software

Postby Brian M » 20 Apr 2011, 10:05

cool, i'll check it out. I have ubuntu on my laptop but rarely boot in to it.

I have the same problem with LTspice. I rarely use it and when i do I have to re-learn everything. It doesn't help that it makes everything super tedious.
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Re: SPICE software

Postby phatt » 20 Apr 2011, 14:13

Hi Brian,

Try Circuitmaker (student version is free but only does 50 components)

http://my.ece.ucsb.edu/bobsclass/2C/Sim ... _maker.htm

I messed around with a few programs but kept coming back to Cmaker because it did the basic stuff so easy.

A couple of fiddly presets have to be made to do the freq plots you mentioned but still a lot easier to work with than some of the high end stuff.
Oh you can sim Valves Also. :thumbsup
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Re: SPICE software

Postby Brian M » 21 Apr 2011, 03:31

phatt wrote:Hi Brian,

Try Circuitmaker (student version is free but only does 50 components)

http://my.ece.ucsb.edu/bobsclass/2C/Sim ... _maker.htm

I messed around with a few programs but kept coming back to Cmaker because it did the basic stuff so easy.

A couple of fiddly presets have to be made to do the freq plots you mentioned but still a lot easier to work with than some of the high end stuff.
Oh you can sim Valves Also. :thumbsup
Phil.


Cool... I'll check this one out too. 50 components would probably be fine, because I never try to spice whole circuits. Usually parts of them to see if they work correctly, or to find out why it's not working. I did the math on this tone control I'm working on, and it doesn't really sound like I expected it to.

Thanks
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Re: SPICE software

Postby coldcraft » 21 Apr 2011, 16:16

Brian M wrote:I'm more interesting in simulating frequency response of a circuit. If there are variables (like potentiometers) in the circuit it's a pain to set up correctly, and I don't think I've ever seen a result that looked correct when graphed (probably user error).



The variant 5Spice works great for this. There is also a free version you could test drive. http://www.5spice.com/
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Re: SPICE software

Postby Hotrats » 31 May 2011, 09:59

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Re: SPICE software

Postby electrical » 31 May 2011, 19:22

In my circuits class (I'm studying to be an electrical engineer), we used PSpice. It has frequency sweep capabilities.
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