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Date
Multiple instances of "C:U2:spark"
I made a subckt of a spark gap and linked it to an edited neonbulb symbol and now I get the warning "multiple instances of "C:U2:spark"". Please help me straighten this out.
By Richard Andrews · #147104 ·
Re: No MAX31740 Spice Model
I looked in the group's Files </g/LTspice/files> section and did a Google search, but there were no hits. So unless someone comes forward, I guess the answer is "no". -- Regards, Tony
By Tony Casey · #147103 ·
No MAX31740 Spice Model
Looking for an LTspice model for the MAX 31740 Ultra-Simple Fan-Speed Controller.? Although AD has apparently acquired Maxim, they haven't developed a model for this device.? Has any members
By John Waugaman · #147102 ·
Re: Sim speed
That's the home PC: OS Name Microsoft Windows 11 Pro System Name XOTIC-PC System Manufacturer ASUS System Model System Product Name Processor 13th Gen Intel(R) Core(TM) i9-13900K, 3000 Mhz, 24
By david vanhorn · #147101 ·
Re: Sim speed
Instead of guessing, use Task Manager to check the performance. You should be able to easily see which resource is being used the most. Are you sure the work PC has 128GB of ram? Specifically, which
By eetech00 · #147100 ·
Re: Sim speed
David asked, "Aren't they in the folder you're working in by default?" LTspice also has a location for "Temporary Files".? Go to its Control Panel > Operation tab.? It's at the bottom of that tab.?
By Andy I · #147099 ·
Re: Sim speed
Aren't they in the folder you're working in by default? [email protected]> wrote: -- K1FZY (WA4TPW) SK 9/29/37-4/13/15
By david vanhorn · #147098 ·
Re: .imp file
Actually, FFT and Inverse FFT are essentially the same algorithms, so the second FFT is really an IFFT, converting the spectrum back into a time-domain waveform. I expect that the .imp file is the
By Andy I · #147097 ·
Re: .imp file
I don¡¯t recommend opening it with a text editor. 11 lines of text, describing the file, 1 line ¡°Binary:¡±, and 4 MB of ¡­ binary. Sent: Sunday, July 02, 2023 12:41 PM To: [email protected]
By Bell, Dave · #147096 ·
Re: .imp file
I didn't intend to do an FFT of an FFT, but that might have happened by accident.? A spectrum of a spectrum is a cepstrum, which has similar anagrammatic concepts such as quefrency.
By John Woodgate · #147095 ·
Re: .imp file
John wrote, " but I've never seen an .IMP file before. " So you probably never did an FFT of an FFT before.? I think that is the only time you get such a file.? LTspice's Help recommends doing that
By Andy I · #147094 ·
Re: .imp file
Well, I have done? a lot of FFTs in the past , and .FOUR, but I've never seen an .IMP file before. ====================================================================================== Best wishes
By John Woodgate · #147093 ·
Re: .imp file
It is indeed an "Impulse response" file, the result of performing an FFT of the FFT's output.? Like regular .fft files, LTspice leaves it around for you to delete if you choose to.? If I'm not
By Andy I · #147092 ·
Re: Sim speed
Have you modified the settings in LTspice so that? temporary files and working files are in a folder on the ramdisk?
By imnoexpertbut · #147091 ·
Re: .imp file
This is an impulse response output from LTspice. I think it is the FFT of an FFT done. You can delete it.
By HK · #147090 ·
Re: Importing 2N7000
The problem with this is it won't contain anything from LTspice's distribution. We know that, over time, devices are added to standard libraries. But also devices are deleted - usually without
By Tony Casey · #147089 ·
Re: .imp file
Try opening it in a text editor just for a look, or just try dragging it from Explorer into an open LTspice session - it would then be opened by LTspice as a text file. LTspice initially assumes
By Tony Casey · #147088 ·
Re: Importing 2N7000
No, the first very basic mockup was done in a bash script, simply to get an idea how it should work. But anything for the masses has to be multi-platform. I'd not even considered Powershell. I don't
By Tony Casey · #147087 ·
Re: Importing 2N7000
I have a folder named "Components", where I put the basic sims of individual devices. Each one has a folder with the .asc, .sym and model in it. When I want to sim a circuit that usees one of these
By Jerry Lee Marcel · #147086 ·
Re: Importing 2N7000
Isn't the normal way of doing this to create a 'Project' folder that automatically contains folders for each data type (i.e. each .extension) that can all 'see' each other? Like a PCB design project.
By John Woodgate · #147085 ·