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Thanx, yes that helps, it's possible to enter the parameters from the data-book ... best regards, Leo

Hello Lewis, Some of the spammers were ferocious in their persistence, weren't they? They seemed to have had a perplexing, particular interest in the section on transformers. Never understood that.

Maybe this will help.. "Spice Models for Vacuum Tube Amplifiers" AES, March 1995 http://users.ece.gatech.edu/mleach/papers/tubeamp/tubeamp.pdf Cheers A. Ganesan

LTwiki.org <http://ltwiki.org> is now fixed on the front page with a link on how to create an 'account'. This capability also exists if one tries to 'log in'. Sorry, I did not try to make it hard,

Hello Jim, I agree it should be easier to find help when one needs it. In your case how to create an account on LTwiki. But then once the account is created, the instructions how to do so become

--- In LTspice@..., "samadamsspam" wrote: > I'd like to add a trace for the magnetic field for a coil to my > waveform plotting, and not sure how to do that. > > I have created a

dear friends, I need that model for noise matching. To ask here for the model or subckt is my last possibility. Perhaps s.o. has ... thanx, best regards Leo

Here is the correct way to link to files in Temp: http://tech.groups.yahoo.com/group/LTspice/files/%20Temp/Non_ideal_inductors.asc And your ideal transformer file:

I'd like to add a trace for the magnetic field for a coil to my waveform plotting, and not sure how to do that. I have created a parameterized "step" simulation which steps over the inductance of a

Here is how you use the time varying transformer for any two inductors.. File --->Temp--->Non_ideal_inductors.asc

http://www.allegromicro.com/en/Products/Part_Numbers/0712/0712.pdf You are in luck. Here is a subcircuit I made, but you will have to make your own symbol for it. Change the gain parameter to

For those wishing to create 'permanent' LTspice parts that appear in your drop down menu of LTspice, please reference Adding a component to LTspice - Ltwiki.org

I forgot to add.. The flux doesn't collapse instantaneously... This can be modeled by putting V(X) through an RC low pass. Cheers AG

I have modeled an ideal transformer with time varying coupling coefficient.. File is in Temp--> Non_ideal_transformer.asc

Google is your friend. Search on the phrase "spice hall effect" Howard

Another problem with the LTspice Help, is that just about everything starts with the old non-graphical input format of traditional (i.e. Berkeley) SPICE: And then we tell everyone to use the schematic

Hi, i'm looking for a hall effect current sensor like the asc712... there isn't a .lib that i could simulate?? or anything possible solution but without use a shunt resistor

Tony, LTspice can be used to model any system of ordinary (not partical) differential equations using "analog computer" techniques. The coefficients can be made time varying by using BV elements that

In message <j50avg+6kln@...>, dated Fri, 16 Sep 2011, analogspiceman <analogspiceman@...> writes: I would add a few more words. 'Open the downloaded LTspiceIV folder, open examples and

--- In LTspice@..., John Woodgate wrote: A constructive, serious answer! Thank you. > [Y]ou have initially to forget all you know about the product, > program or application and consider