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I can't seem to get this model for a TLC555 (555 timer IC) to work correctly, the output is pegged at 12v. Any thoughts? Dave. *** * TLC555 TIMER MACROMODEL **

Helmut, OK, will do after making the correction. I might also make it a narrower filter so the analysis is a bit more interesting. --Mike __________________________________________________ Do you

Hello Mike, I like your example. Could you put it into the Example\Educational folder of LTSPICE? Only one correction of this schematic. This line should have the comment 10% and not 20% for the

Brian, Those tolerances are just for the bill of material, like the partnumber and mfg. About as close as you can get to doing Monte Carlo in LTspice is with parameterized curly brace expressions

Anyone got a way of doing a monte carlo run (AC or AC sweep) using the resistor and capacitance tolerances ? Brian -- Brian Howie | Tel: 0131 343 5590 BAE SYSTEMS | Fax: 0131 343 5050 Sensor Systems

Russell, I wouldn't take the opamp models in LTC.lib so seriously as to worry about whether 'GMIN across Current Sources' was checked or not. The model for wish that got introduced for was pretty

Greetings All, I have a question for Mike E... Mike, Is the recently added 'GMIN across Current Sources' hack needed when using the Lin Tech Op Amp models in LTC.lib? I ask this because in times gone

Reinier, If you want to use many inductance values, at one frequency of interest then you can have the frequency component plotted as a function of inductance this automatically happens when you do a

Reinier, If you want to use many inductance values, at one frequency of interest then you can have the frequency component plotted as a function of inductance this automatically happens when you do a

Thanks for all the leads on this one, I'll see what I can come up with. Thanx, -Jon -------------------------------------------------------------------------- Jonathan W. T. Graham grambo@...

Hi, I use the .step command to do multiple .AC runs. One of the inductances in my circuit is swept. How do I know which trace belongs to which step value? Do I have to count the traces? I want to use

Hi, I use a free utility from IntuSoft called IBIS2SPICE. It reads in IBIS models (up to version 2.1) and generates an equivalent behavioural spice model. It's originally intended to generate a model

wrote: there isn't, an IBIS 74lvth245 with some Hello Jonathan, I have seen SPICE models of similar ICs on the Philips web site, but I am not shure how compatible they are.

Jon, No, IBIS isn't in LTspice. I think IBIS was an Intel invention that allowed them to give behavioral descriptions of their I/O pins without giving out implementation details. Anyway, I think IBIS

Bill, I think it might be hard to generalize without seeing the circuit that's causing you trouble. Usually its a matter of finding the part of the circuit that's causing difficulty and find a

Is there any support for IBIS models in LTSpice? Assuming that there isn't, are there any suggestions for what to do if a manufacturer only has an IBIS model for a part that I'd like to model?

What sort of things would one do to minimize the time required to process a simulation? Bill __________________________________________________ Do you Yahoo!? Yahoo! Tax Center - File online,

Steve, Multiple plot windows were a precursor to the multiple pane plots that are now supported. The active window is the one most recently opened. Whether adding plot a trace to an old window will be

I just discovered (maybe everyone else already knew) that if you choose View / Simulation Data after a plot is displayed, you get a second independant plot window. If you rerun a simulation, only the

Hello, I have uploaded an enhanced version of the raw file utility program ltsputil.exe. It allows you to convert, merge, equalize and export your LTSPICE simulation raw files to other programs. Now