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question:- LTSpice symbol creation
Hello, I have a schematic of a current mirror circuit. How do I create a symbol of this schematic ? Please help. Thanks and best regards. __________________________________________________ Do You
By Niketh T. <cmos_niketh@...> · #10817 ·
Re: Ltsputility
Hello Parry, please send me at least your .raw file and the command line you use where you have the trouble with too many variables to export. The limitation may depend on the parameters of the
By Helmut Sennewald · #10816 ·
Re: How to set digital component amplitude level
Hello Loic, please read message 10973. Add parameter Vhigh=3.3 Best regards, Helmut Some hints for working with clocked digital parts. Take care that none of the contol signals change its level at the
By Helmut Sennewald · #10815 ·
Re: Ltsputility
Hi Helmut, I am using ltsputil 2.6. I know about the Ltspice's export utility, but my application involves DOS therefore I guess ltsputil was the best option in my case. So, is there a limitation on
By parry_lion <parry_lion@...> · #10814 ·
How to set digital component amplitude level
Hello, I'm trying to simulate a mixed-signal circuit with analog and digital stuff. The logic components (dflop, buf...) put out 1V for a logic high output. Does anyone know how one can change that to
By lsibeud · #10813 ·
Re: using .PARAM statement repeatedly for same variable name
[...] It would indeed be a strange amplifier circuit that only oscillated if, during the build, the capacitors were all soldered into the PCB before any of the resistors were. To make any sense,
By analog spiceman · #10812 ·
Re: using .PARAM statement repeatedly for same variable name
Rico, I hope it is. This netlist will give an error: * R1 N002 N001 {X} V1 N001 0 pulse(0 1 0 1u 1u .5m 1m) C1 N002 0 .1? .param x=1K .param x=2K .tran 3m .end SPICE and this .param stuff is what is
By Mike Engelhardt · #10811 ·
Re: Ltsputility
Hello Parry, which version of ltsputil.exe do you use? The latest program is named version 2.6 . Have you seen the menu command "File->Export" in LTspice? It allows you to export data into a text file
By Helmut Sennewald · #10810 ·
Ltsputility
Hello, Is there a limitation(no. of variables) in extracting data from a .raw file when using Ltsputility ? Is there any usage which will include all the variables in the raw file instead of
By parry_lion <parry_lion@...> · #10809 ·
Re: using .PARAM statement repeatedly for same variable name
name. Hello Rico, I would like to understand your applicaton. What's the reason to assign a second time a value to a parameter? Best regards, Helmut
By Helmut Sennewald · #10808 ·
using .PARAM statement repeatedly for same variable name
It seems it's impossible to use .PARAM repeatedly for same variable name. example: .PARAM R1 = 10 ...some code... .PARAM R1 = 20 *value of R1 is still 10 Anybody has a solution for reassigning a
By rico_sinnig · #10807 ·
Re: Exporting group delay data
wrote: Hello Frank,
By Helmut Sennewald · #10806 ·
Re: 3rd Party Subcircuit Files
Hello Lawrence, The symbol "opamp2" can be used for most of the opamp models from all manaufacturers. This symbol requires that the models have the following pin-order in the .subckt line. Symbol's
By Helmut Sennewald · #10805 ·
Re: 3rd Party Subcircuit Files
Hello, Although I am not the best person to answer this question I can answer it in part. When it asks you to "copy" the schematic from the library it means to copy the .asy file from the /symbols
By David Glover · #10804 ·
3rd Party Subcircuit Files
I am not understanding where/how to put 3rd party .SUBCKT files into LTSpice. The explaination in the PDF manual seems to have the cart before the horse. I "drew" a schematic using Opamp2. On page 94
By Lawrence Joy · #10803 ·
Re: Exporting group delay data
I would suggest the following approach: Plot -d(im(log(V(out))))/2/pi and export the result as Cartesian data. The real part will be the group delay, the imaginary part will be zero. LTspice is really
By Frank Wiedmann · #10802 ·
Re: SN55ALS195 model
<helmutsennewald@...> wrote:
By dave_flyfisher2000 · #10801 ·
Re: SN55ALS195 model
<david.edmondson@...> wrote: Hello Dave, There are models for the 74HC195 and 7HCT195 in the Files section. Files > Lib > Digital 74HCTxxx Files > Lib > Digital 74HCxxx Maybe the 74HCT195 model is
By Helmut Sennewald · #10800 ·
Re: Exporting group delay data
Hello Varoli, There is no way to directly export group delay in LTspice. You could plot and export the phase ph(V(out). This will require a little bit less work in the external post processing to get
By Helmut Sennewald · #10799 ·
SN55ALS195 model
Does anyone have a model please for a SN55ALS195 or SN75ALS195. Nothing comes up on Google. Regards....Flyfisher
By dave_flyfisher2000 · #10798 ·