Quote from: wilfred on August 02, 2016, 01:48:38 am There should be sticky topics on several subject not already covered.
ICIRCUIT SELECT GROUP ARCHIVE
* Analog Devices have just acquired Linear Technology - deal closing early 2017 - and no one knows what's actually going to happen yet, so if you have *ANY* interest in simulation, grab LTSPICE and archive the installer, just in case. You can easily pay a significant amount of money for a competing commercial product that isn't as powerful or is node-limited, and the only benefit is often a glitzier GUI. Its UI is somewhat clunky, with a lot of stuff being driven by text SPICE dot commands, but its well worth the learning curve. Its a totally free PRO-grade simulator with a large device library of Linear Technology * and 'jellybean' parts + a lot more 3rd party devices can be found on its Yahoo group. The general consensus seems to be that Analog Devices' LTSPICE generally comes out ahead, especially if you want to share simulations with others. Doing a site specific Google search for best circuit simulator finds most of them. (comment thread) There have been a *LOT* of 'which simulator' discussions on the forum.
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(comment thread) EEVblog #301 - LTspice Temperature Sweep Tutorial Dave shows how to do temperature and parameter sweeping of your circuit using LTspice (comment thread) EEVblog #260 – Tracking Pre-Regulator Simulation in LTspice – PSU Part 13 Some tracking pre-regulator simulation fun in LTspice. In this introduction Dave explains what LTSPICE is and how to do the simplest of the SPICE analysis options - basic DC operating point analysis. Timĭave says his favourite SPICE simulator is LTSPICE and has done a number of tutorials: EEVblog #516 - LTSPICE Tutorial - DC Operating Point Analysis Part 1 in a series of LTSPICE tutorial videos.
There's so little interest in board-level sim, I haven't seen new tech (i.e., since SPICE3) offered in any free or board-level packages, anywhere.
ICIRCUIT SELECT GROUP SOFTWARE
Meanwhile, AFAIK, simulations have continued advancing, but only in six-digit software for ASIC design.
Engineers have long since resigned themselves to build-and-test, so it doesn't much matter. XSPICE is the original, but it's horrible Altium uses SimCode Multisim uses some proprietary event-driven code they're all different. LTSpice has a general-purpose digital primitive with almost a dozen parameters (most of them tied 0/1 to create a standard gate or flop unit), which curiously, LT doesn't want you to know about (implementation hints used to be talked about on the forums, then they were censored.). PSPICE has (I think) event-driven primitives, and an "analog" library built from SWITCH parts. But it doesn't help that most simulators have their own proprietary digital logic functions. Code: Ename node1 node2 TABLE ((x1,y1)(x2,y2).) (or instead of TABLE, VALUE and an expression), and other originally-proprietary PSPICE syntax.
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