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Date
Re: Bug in Version 4.20d
Hello Peter, Have you reported this problem? I tried with a simple example, but it has been OK. I don't see any error. Could you please upload a test case? Best regards, Helmut
By Helmut Sennewald · #68614 ·
Re: Bug in Version 4.20d
File a bug report with him, at the address in the "About LTspice" dialog. Jim Wagner Oregon Research Electronics
By Jim Wagner · #68613 ·
Bug in Version 4.20d
I updated LTspice yesterday. There is replacement of the jumper with 0 value of the resistor, but the Export Netlist is not working now properly. The values of the resistors are replaced with
By PK · #68612 ·
Re: XVAR specification
M.Rakesh sharma wrote, " I chose one potentiometer from the all_files folder. But still I am unable to simulate my circuit if I use this component in my circuit. Same error message appears again -
By Andy I · #68611 ·
Re: XVAR specification
Dear Mr Andy, Thanks for your suggestion. I chose one potentiometer from the all_files folder. But still I am unable to simulate my circuit if I use this component in my circuit. Same error message
By rakesh sharma · #68609 ·
Re: INA128 SpiceModel
Thanks you for help and it is working but can you please explain me how did you do it because i spent many hours of searching and trying, i have even follow all the tutorial but it has never worked.
By Ali Ahmed · #68608 ·
Reference Information
Some one or two months ago mention was made of a book ¡°The LTSPICE IV Simulator¡± written by Gilles Brocard, published by Wurth Electronik, ISBN 978-3-89929-258-9. I have used LTSPICE for about
By Mark Dunning · #68610 ·
Re: FFT Resolution
In any event the resultant "spectral accuracy", even if optimized for some set of conditions, resolution, and bandwidth of spectrum, will be directly dependent on the accuracy of represented
By Ron Liff · #68607 ·
Re: LDO LTC1844
There is a solution to LDO-s that work well enough using a level 2 switch that was described here on the forum. I did my solution for a L4940 family regulator that works well enough. You won't be able
By Davor Lister · #68606 ·
Re: Determine phase and gain margin in filter/amp
Thanks again, Frank. I should mention your file is named "opamp stability 2.asc" for those who may be looking for it. To me, it is one of the most sign
By monettsys <405a82e5@...> · #68605 ·
Re: Determine phase and gain margin in filter/amp
---In LTspice@..., <405a82e5@...> wrote: Frank, that is absolutely spectacular! Thanks very much. Also thanks for the explanation of the second condition in the Omicron paper. It means we
By Frank Wiedmann · #68603 ·
Re: Determine phase and gain margin in filter/amp
Hi Rick, Thanks for the explanation. My version only works with left click. You really should take a look at Frank's solution. I extended the frequency range to .ac dec 1000 1m 10Meg Two runs gave the
By monettsys <405a82e5@...> · #68602 ·
Re: Determine phase and gain margin in filter/amp
Frank, that is absolutely spectacular! Thanks very much. Also thanks for the explanation of the second condition in the Omicron paper. It means we have no
By monettsys <405a82e5@...> · #68601 ·
Re: FFT Resolution
Hi Steve and Andy Youll only be able to see the side bands if the sample is long enough to encompass an integral number of modulation periods. (and an integral number of carrier periods. The two
By Al Dutcher · #68600 ·
Re: Questions about phase in .AC LTspice Analysis
Hnguyen wrote: " Q1: Why |Vop| and |Vom| are nearly equal? why not equal?" A1: Ideally they are equal. Real circuits are not ideal. If there is any common-mode component present in the output signal,
By Andy I · #68599 ·
Re: FFT Resolution
The widths of the peaks depend highly on the number of samples per cycle. It also depends a lot on the windowing function that is used.My hunch is that, for an FFT, it is often an indicator of
By Jim Wagner · #68598 ·
Re: Determine phase and gain margin in filter/amp
---In ltspice@..., <405a82e5@...> wrote: Thanks, Frank. The omicron article gives good information, including derivations. Thanks for posting the link. The first condition is pretty easy -
By Frank Wiedmann · #68597 ·
Re: FFT Resolution
Steve K. wrote: " ... what's the narrowest possible harmonic bandwidth that ought to be expected? In other words, when is the simulation as optimized as it can be?" Good question. I don't know. Steve
By Andy I · #68596 ·
Re: Questions about phase in .AC LTspice Analysis
Hello Andy Andy: If they were complementary, then |Vop| and |Vom| would be nearly equal, their phases would be opposite (180 degrees apart), and V(vop,vom) would be larger than either one, rather than
By hoa van nguyen <hnguyen4280@...> · #68595 ·
Re: FFT Resolution
In message <l87u7c+ebvu@...>, dated Tue, 10 Dec 2013, "skleiser@..." <skleiser@...> writes: harmonic bandwidth doesn't depend on those things. Embedded in the Help on the B
By John Woodgate <jmw@...> · #68604 ·