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Re: OT/Left Field...
As you may know, Mike Engelhardt has said before that LTspice isn't going to be ported to another platform or OS. That would be a major undertaking. If there exists anything similar to Wine for Linux
By Andy I · #64669 ·
Re: 74F and 74ACT models
At one time, T.I. and National Semi (which is now T.I.) had SPICE models for them. In a university project I should simulate and analyse the frequency If you mean crosstalk within a device (multiple
By Andy I · #64668 ·
Re: arbitrary solar cell model
Hello Hamed, While I would also advise you to use a standard diode model instead of building your own, I may be able to shed some light on your difficulty. Note that your derived values for ISC and
By Fred · #64667 ·
locking the graph vertical axis
Having used LTSPICE for some years now, I never satisfactorily solved this issue: I have some circuits that have essentially 0 gain, plotted on dB scales - I get 100's of dB on the vertical axis. I
By Kevin Cobley · #64666 ·
Re: inductance with a permeability in dependency of frequency
I sometimes use a 'linear' representation of inductors to speed analyses. Try a ladder network of linear inductors and resistors. Just like in fitlering, you have to change the first and last
By Macy · #64665 ·
Re: inductance with a permeability in dependency of frequency
Hi Herbert A simple model would be an inductor in parallel with a resistor. Most ferrous cores behave well up to a cross over frequency at which the perm drops and they become very lossy. The loss
By Al Dutcher · #64664 ·
Re: arbitrary solar cell model
Did you know that a particular instance of a diode may have its temperature set independently of the general circuit simulation temperature such that the diode temperature remains fixed while the
By analog spiceman · #64663 ·
Re: arbitrary solar cell model
Thank you very much dear friend( you did not mention your name) The fact is that here I cannot use the standard diode model while it is temperature dependent diode so I should mention the diode
By hamed · #64662 ·
Re: arbitrary solar cell model
Is there some reason you model must be so complicated and do you really need to reinvent the diode model? Couldn't you do something like the following and put all us, your fellow group members and
By analog spiceman · #64661 ·
Re: arbitrary solar cell model
In message <krgsbq+nfo3@...>, dated Tue, 9 Jul 2013, hamed <l0st_l0rd@...> writes: It couldn't possibly do so. If you want more help, please post the schematic. -- OOO - Own Opinions
By John Woodgate <jmw@...> · #64660 ·
Re: arbitrary solar cell model
Thanks friends for your responses but the point is that converting this circuit to schematics will make it more confusing. actually the output should not have the distortion in -1.8kA ! and it should
By hamed · #64659 ·
Re: .measure script
Files > Tut > MEASURE http://tech.groups.yahoo.com/group/LTspice/files/%20Tut/MEASURE/ Only the commands which are wrong and of course the commands needing results from wrong previous commands. Yes.
By Helmut Sennewald · #64658 ·
Re: A TVS does not work with load dump test??
Hi. You included TVS diode in parallel to the voltage source? Then, measure the diode current. If the source impedance is zero, the voltage limit is not. Put your project in the TEMP folder.
By §¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó · #64657 ·
A TVS does not work with load dump test??
I try to create a general RC circuit with LED which is usually designed for car lamp use. A TVS(SMBJ24CA) is used for protect from voltage spike(parallel with input). I input a load dump voltage
By eqmqiq · #64656 ·
74F and 74ACT models
Hy guys Does anybody know where it is possible to get some models of 74F and 74ACT units? I couldn't find anything in the group library. In a university project I should simulate and analyse the
By boeser_mishko · #64655 ·
.measure script
Seems there has been quite a bit written about the .meas command which makes it hard to find specific information in previous posts. Several questions that may have been already answered in the past:
By mbuni78 · #64654 ·
Re: arbitrary solar cell model
In message <krg4eh+9gdc@...>, dated Tue, 9 Jul 2013, sawreyrw <sawreyrw@...> writes: The file will run and 'Pick visible traces' allows output node voltages to be plotted. Both outputs
By John Woodgate <jmw@...> · #64653 ·
Re: Possible to snap to lowest or highest point of plot?
Hello, You could use the MEASURE functions. The results will be in the log-file. View -> SPICE Error log .meas peak1 MAX V(..) .... There are many examples in the Files section. Files > Tut > MEASURE
By Helmut Sennewald · #64652 ·
Re: inductance with a permeability in dependency of frequency
Herbert, I'd like to help you, but I don't understand your question. What do you want to know? Rick
By Rick · #64651 ·
Re: arbitrary solar cell model
Hamed, No one is interested in a .cir file. If you want help, convert it to an .asc file and post that to the Files>Temp folder of this group. Rick
By Rick · #64650 ·