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Jon, By and large, you can run spice3 models in LTspice. LTspice can use resistor models. But it looks like there is one syntax incompatiblity here, you'd have to put the resistor model before the

I found this model for a 1N5242B zener: .SUBCKT 1n5242b 1 9 DF 1 9 DFMOD .MODEL DFMOD D N=1.63427 IS=4.58223E-011 RS=1E-005 EG=1.11 + XTI=3 CJO=4.12979E-011 VJ=0.41419 M=0.268521 FC=0.5 + TT=1E-008

Bill, Go to Tools=>Control Panel=>Save Defaults and check "Save Subcircuit Node Votlages" --Mike __________________________________________________ Do you Yahoo!? Yahoo! Tax Center - File online,

Is there some way to monitor nodes internal to a model? Bill __________________________________________________ Do you Yahoo!? Yahoo! Tax Center - File online, calculators, forms, and more

Jon, Not really. Yep. --Mike __________________________________________________ Do you Yahoo!? Yahoo! Tax Center - File online, calculators, forms, and more http://tax.yahoo.com

Is there a way, in LT SPice, to access the value field of a component in a schematic, for use in a {} formula? For example, let's say I have a component, R1, which is 47k. I know that the voltage

Thank you so much. How did you determine that? Or is this something I should just know -- to leave nothing floating? Bill --- Panama Mike <panamatex@...> wrote: <snip>

Bill, The problem was that the filment supply was floating, that is, its potential wasn't defined. The following circuit fixed this: --- .asc file --- Version 4 SHEET 1 892 692 WIRE -144 304 -144 336

OK, here they are. I have managed to clear up the warnings but still get the singular matrix error. .asc file... Version 4 SHEET 1 892 692 WIRE -16 208 176 208 WIRE 272 256 272 336 WIRE -16 288 -16

Bill, It's vaguely documented here and there in the help. It looks like the messages in your circuit come from using curly braces where parenthesis was meant. PSpice accepts with without warning, but

Thanks for the reply, Mike. Where might I find documention on the syntax so I could clean up these models and avoid the warnings? I have put the files for the circuit and model on the web. I wasn't

The "Questionable use of curly braces" just means the model is written with sloppy syntax. LTspice is pretty verbose about error messages. You can ignore it. Post the circuit with models for more

Hi all, I am trying to get the vacuum tube models from Duncan Amps working and have run into some trouble. I'm quite new to all this and don't know where to start looking. Here's the error log: Thanks

It uses PSpice style syntax. There are examples in the ./example/Edcuational directory and it's mentioned in the help in LTspice=>Dot Commands=>.STEP. Here's how your example translates: * V1 N001 0

Hi, In Hspice, I can do the following statement: .ac lin 10 1G 10G sweep my_parameters lin 10 1 10 It basically means that for every ac operating point, the Hspice also does a sweep of my_parameters

A crash mode relating to schematic editing while inserting a new net has been fixed today in version 2.01x. --Mike __________________________________________________ Do you Yahoo!? Yahoo! Platinum -

Massimo, I'm glad that you're using it for educational purposes. I've actually had it as a job requirement to promote it for this for some while but held off until I had the hierarchical schematics

Massimo Gaspari wrote:

Dear Mike, I appreciated very much the LTspice program. I would like to thank you and Linear tech. too. I am using LTspice for educational pourposes, it is the best choice for that (IMHO).The are no