FREE SPICE SIMULATOR

[JonW]

Apologies Guys

I should have posted this years ago.  I used to use LT Spice a fair bit and still do at times.  Its great and free but limited and sometimes its good to bounce a complex circuit between simulators as the models are only as good as the files!.  I came across Spectrum Software years ago as I needed to use it for a particular purpose.  Anyways its a koofing good package and extremely powerful for transient and swept analog/mixed signal.  Some years ago the owners decided to cease trading without selling.. odd i know,  so instead of shutting it up, they gave it away.. FREE!!

I never thought of sharing it on here.  Sorry Guys my bad.. This is a real no shit Sherlock free as the day it was born simulator, no strings attached and fully working with no limits.  Hats off to the developers, personally think it was a F*Ck U to competitors, but we benefit!! (Les i could see you doing this)

Download a copy before the site closes:

Main Site : http://www.spectrum-soft.com/index.shtm

Downloads Page : http://www.spectrum-soft.com/download/download.shtm

Faster
Algorithmic improvements, optimized code, and an integrated, seamless, analog/digital simulation interface contribute to the stunning speed of Micro-Cap 12.



More powerful
Numerous features contribute to Micro-Cap 12's power. Among them are:

Integrated schematic editor and simulator.
Dynamic analysis updates waveforms and curves as you edit
Native digital simulator
Worst Case analysis to find the statistical and extreme limits of performance
Smoke Analysis to assess how close the circuit is to violating maximum operating limits.
Periodic Steady State analysis
Integral circuit optimizer with multiple optimization methods.
Integrated active and passive filter design function
Device library with over 33,000 parts.
Analog and digital behavioral modeling
Schematic waveform probing.
On-schematic voltage/state, current, power, and condition display
During the run plotting
Smith charts / Polar plots.
Multidimensional parameter stepping.
Monte Carlo analysis.
3D plotting.
Performance functions and plots
.Measure functions to measure circuit behavior
Optimizing parts modeler
Gummel-Poon, Mextram and Modella bipolar models
Berkeley BSIM 1, BSIM 2, BSIM3, and BSIM4 MOSFET models
The latest Philips device models, including MOS 11, 20, 31, 40, and PSP 102
Hefner IGBT model
IBIS model translator
Animated LEDs, switches, bars, meters, relays, stoplights, and DC motors
Sample and hold, timer, and Z transform devices
Lossy transmission lines
Jiles-Atherton nonlinear magnetics model
PCB interface to popular packages
LAN version for collaborative projects
Transient analysis - for investigating time domain circuit behavior
AC analysis - for investigating small signal behavior
DC analysis - for plotting static DC variables
Transfer Function analysis - for calculating the DC transfer function
Stability analysis - to find the stability limits for linear circuits
Harmonic distortion analysis
Intermodulation distortion analysis
Extensive mathematical operators and variables.