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wrote: diode. Hello Dave, the only wrong paramter is TT=0.0001. If you correct it to TT=1e-7 then the simulation agrees with the datasheet. (TT=reverse reovery time). Best Regards Helmut From IRF:

I've downloaded several MOSFET models from IR most of which have worked fine. As luck would have it, the model for the device I've settled on (irlr2905)appears to have a problem with it's body diode.

And here is a simple one that does spreads on Beta. Of course for a full monteca

Mike, I was hoping I could use the tolerance for the component as a parameter, but your method works just fine. A very useful utility. Thanks Brian *** This email and any attachments are

Thanks, Mike. That did the trick! Dave.

Mike, I found your use of the RAND function for Monte Carlo a very interesting work around. In using this approch it looks like the value generated by RAND repeats each time the simulation is run. It

Dave, I haven't checked your model, but note that there is an idealized 555 timer macro model in LTspice. It's called NE555. Also, there is a transistor level schematic of the bipolar version of the

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.