Circuit Analysis, Software, Electrical Engineering Software, mostly FREE

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Category: Circuit Analysis

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Program Name: LT SPICE
Function: Linear and nonlinear circuit analysis
License type: Freeware.
Link location: External
Description:
This spice simulator is supplied by the folks at Linear technology.
It's optimized for LTC switching power supply analysis, but is useful for lots of other things as well!
Very possibly the best SPICE simulator you can get for FREE!
http://www.linear.com/software/
Electrical Engineering Software HOME


Program Name: Spice Opus
Function:
License type: Demo
Link location: External
Description:
SPICE OPUS is a circuit simulator with optimization utilities. It is a recompilation of the original Berkeley's source code for Windows 95/98/NT and Linux operating systems. Georgia Tech Research Institute's XSPICE mixed-mode simulator was added to the Berkeley code.
Spice Opus home page
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Program Name: SPICE
Function: Linear and nonlinear circuit analysis
License type: Freeware.
Link location: Local.
Description:
SPICE is the celebrated nonlinear circuit simulator
from U.C. Berkeley. This file is compiled for DOS.
It doesn't run well under the Win-98 dos shell.
This version was compiled for DOS
If you want to use it with Windoze, you're on your own! DOWNLOAD NOW

the Spice Page at Berkeley
Browse the old README file first (Berkeley's SPICE page makes this somewhat obsolete.
Download the source code, and manuals as supplied by UC Berkeley. (1.5 MEG)
Electrical Engineering Software HOME

E Circuit Center A free source of SPICE circuit files and tutorials for simulating and analyzing electronic circuits.
Antique Software:
Software below this line is old and probably won't run in 64 bit MS Windows.
It's listed here because:
1. You may be able to use it in a compatibility mode.
2. Some programs have source code provided, which you may find useful.


Program Name: Cascade [ANTIQUE]
Function: Dynamic range analysis of cascaded circuits
License type: Freeware
Link location: Local
Description:
Noise Figure, Gain, P1db and Intercept point calculation for cascaded amplifiers, mixers, filters, etc. This is the old DOS version from Amplifonix
DOWNLOAD NOW
Browse the program's README file first
Electrical Engineering Software HOME


Program Name: Pole Zero's CasCADe [ANTIQUE]
Function: Dynamic range analysis of cascaded circuits
License type: Freeware
Link location: Local + External links
Description:
Noise Figure, Gain, P1db and Intercept point calculation for cascaded amplifiers, mixers, filters, etc.
DOWNLOAD NOW
Browse the program's README file first
Electrical Engineering Software HOME


Program Name: RF SIM 99 [ANTIQUE]
Function: Smith Chart simulation of RF circuits
License type: Freeware
Link location: Local
Description:

Simulate circuits made of passive lumped components, S-Parameter defined components
and transmission lines. This program is quick and easy to use, I use it all the time.
DOWNLOAD NOW
Browse the program's README file first
Electrical Engineering Software HOME


Program Name: sparam [ANTIQUE]
Function: Performs various S-parameter calculations
License type: Freeware
Link location: Local
Description:

Handy little tool for figuring reflection coefficients, desigign L, T, PI networks,
Tee and PI pads, etc.
DOWNLOAD NOW
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Program Name: Y2F [ANTIQUE]
Function: Compute system noise figure from measured Y factor.
License type: freeware
Link location: Local
Description:
Use to calculate noise figure when all you have are a noise source, and an RF power indicator. Y factor is the ratio of RF ouput power with the noise source ON to RF output with the noise source off. If you know the ENR of the noise source, and measure the Y factor, you can calculate the system noise figure.
DOWNLOAD program
C++ source code

Electrical Engineering Software HOME


Circuit Analysis, Software, Electrical Engineering Software, mostly FREE