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Re: Problems using Pspice fet model for infineon BSR202N.
Thank you both Bordodynov and Andy. That was extremely helpful. I'm hoping you can confirm my understanding, that reducing TRTOL slows the simulation but should make it more accurate. It should not
By Richard Chapman · #108544 ·
Re: LTSpive IV vs XVII voltage generators
Excellent catch. Bravo! This question is closed. ---In LTspice@..., <imbvlad@...> wrote : I remember I noticed this but also that there was an entry in the changelog about this and, sure
By analog spiceman · #108543 ·
Re: LTSpive IV vs XVII voltage generators
I remember I noticed this but also that there was an entry in the changelog about this and, sure enough, here it is: 04/24/18 Corrected the behavior of SINE voltage and current sources when Ncycles is
By Vlad · #108542 ·
Re: Edge triggered b-source logic and integrated averaging in LTspice
Hello analogspiceman, Thanks for your uploaded example "sampled_average_expanded.asc". I have now a better understanding after I plotted V(4), V(3) , V(x) and V(s) in one plot.
By Helmut Sennewald · #108541 ·
Re: Frequency calc durung trans sim
Agreed. (Although Mike is brilliant he can be very stubborn once his mind is closed.) ---In LTspice@..., <helmutsennewald@...> wrote : Hello analogspiceman, I have been aware of this
By analog spiceman · #108540 ·
Re: Frequency calc durung trans sim
Hello analogspiceman, I have been aware of this command, but it would be a nightmare to download a few thousands of my schematics, modify it and upload it again. I would also loose the time stamp
By Helmut Sennewald · #108539 ·
Re: How to include component values in LTSpice trace formulas
Correction. Replace ^ by **, and the last number should be 10**(-15).? It may be possible to work round the '1F' problem by changing it to '1C/1V', which is '1 coulomb per volt'. John Woodgate
By John Woodgate · #108538 ·
Re: How to include component values in LTSpice trace formulas
You should first of all, read the Help. It is very information-intensive, so it needs reading carefully and reading several time. There is a special way of treating capacitors that do unusual things
By John Woodgate · #108537 ·
Re: LTSpive IV vs XVII voltage generators
Small correction to my reply -- In LTspice IV, at the end of Ncycles, the output of the source suddenly reverted to Voffset or Ioffset, not necessarily to zero. Regards, Andy
By Andy · #108536 ·
Re: Frequency calc durung trans sim
Hello Helmut, Mike added a command line switch to automatically resize text when an old file is opened with this switch, but it is a lot of trouble to use and it often only fixes some of the text.
By analog spiceman · #108535 ·
Re: LTSpive IV vs XVII voltage generators
Larry wrote about changed behavior between LTspice IV and LTspice XVII, when a sine wave voltage or current source has Ncycles. "I assume this was done intentionally or is this possibly an error."
By Andy · #108533 ·
Re: LTSpive IV vs XVII voltage generators
Hello Larry, I would assume it was done intentionally. Although there may be arguments for both behaviors, the current behavior seems correct to me. A simple sine wave is not the only case to
By analog spiceman · #108532 ·
Re: LTSpive IV vs XVII voltage generators
Hello Larry, I haven't discovered this behavior, because I used sine-burst only a very few times in 17 years. I just checked your reported case and indeed it's different in LTspiceXVII. It's difficult
By Helmut Sennewald · #108534 ·
Re: How to include component values in LTSpice trace formulas
Doug asked: "I would like to be able to define a trace for the energy stored in a capacitor using the formula E= 1/2 * V^2 * C. But I can't find how to include component values such as capacitance, C,
By Andy · #108531 ·
Re: Frequency calc durung trans sim
Hello eT, Have you tried my older eyamples before? freq_meter_test1.zip, freq_meter_test2.zip https://groups.yahoo.com/neo/groups/LTspice/files/%20Tut/
By Helmut Sennewald · #108530 ·
LTSpive IV vs XVII voltage generators
I loaded an old circuit that was created in LTSpice IV into LTSpice XVII today and noticed that the voltage acts differently. Specifying a sine wave voltage source with some number of cycles and some
By Larry Benko · #108529 ·
Re: Edge triggered b-source logic and integrated averaging in LTspice
Hello Vlad, I noticed that bug and reported it several days ago. Perhaps it would help if you reported it as well. It only is a problem for "B I=" sources that include a defined function and that
By analog spiceman · #108526 ·
Frequency calc durung trans sim
Hi everyone I'm working on a B device method to calculate the frequency of a square wave during a trans sim. I'm uploading a file "CalcFreqFromTonToff.zip". Its not a real accurate method but I was
By eetech00 · #108527 ·
How to include component values in LTSpice trace formulas
Just joined the group and don't know how to search whether this has already been addressed - guidance on that would be appreciated! But here's my question: I would like to be able to define a trace
By Doug Fay · #108528 ·
Re: Edge triggered b-source logic and integrated averaging in LTspice
Hello analogspiceman It's a nice example on how to use idt() as idt(0, x, y), instead of the more usual idt(x,
By Vlad · #108525 ·