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MC33074, MC33072, MC34074P
Hi Bordodynov, Thank you for your model of MC34074P. We have been using thousands of the MC33074 and MC33072 in our boards.? I designed the old school way of actual breadboarding and pcb proto before launching to final production. I just started LTSpice 3 mos ago as I just came accross it by accident through ready to test simulations of LT smps ic's. We use also a lot of LT and AD devices by the way. I found your MC34074P?(which is same family as MC33074/2/1) then in the LTspice Yahoo files, but I didn't know how to make use of it. Now I was already able to add it to my library and actually start simulating with it.? Thanks to Andy for patiently tutoring me.? Appreciate also all the hard work Helmut has been throwing in to make such a hugh volume of achives available to the community especially the newbies. Best regards, Eric |
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Re: CD4060 and CD4063 LTSpice models needed
electronicafrind (Juan Esteban) wrote, "I need CD4060 and CD4063 LTSpice models, .subckt and .asy files." When you joined this group, you read about the "Table of Contents" file (all_files.htm), which led you to the CD4060 model and symbol.? How did that work out for you? Sorry, I can't help you with the CD4063. Regards, Andy |
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Re: LTSpice Model for Photo Triac - VOM160
Hi Andy, I like your suggestion. So now my backgound is dark gray! I'm ok with seeing the icons. So no problem whatever my default settings are. Hi Bordodynov, I have used another of your models. I have opened a new topic for it. Thanks and best regards, Eric On Sun, Nov 25, 2018 at 4:52 AM §¡§Ý§Ö§Ü§ã§Ñ§ß§Õ§â §¢§à§â§Õ§à§Õ§í§ß§à§Ó BordodunovAlex@... [LTspice] <LTspice@...> wrote:
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Re: Have anyone built black hole model already ?
Also, sometimes when I came cross the streets, I saw some ignorant little boys playing and sitting fat men aside , I always hope/remind myself, I should fulfill my mind soul, brain more, such that I could admire the life, instead of the eternity boring, collapse, when seeing all this.
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So, how about do me a favor, help delight me more, the SPICE modeling..... Thank you very much. ---In LTspice@..., <ericsson.sunshine@...> wrote : Hello, John: Thank you for the replies. Though several days ago, I would like someone could suggest some materials (textbook) about the semiconductors, electron-hole pairs, carriers, etc. Everything needed for a SPCE modeling. I even don't have the concept of where to begin. (Though I have heard "CMOS circuit design layout and simulation", but I am not sure if that's enough. And haven't done reading it yet.) Though same "hole" things in this thread, but size is completely different. I have less things to say about black hole and the space things, I agree what you have said about the 1-dimension or 3-dimension, that's what I am familiar about, too. The idea is just an illusion. As you said , no one could prove it. Especially this/(those) body(ies) none exist in space (has no dimensions/size). No bodies...so that, I just think if the time-space is exchanged, time could be traveled, and space couldn't be traveled, but still in it, how to explain ? does that mean, fully filled the space , feel the all space ? Have (in) it all, but couldn't travel move forward/backward. Just some interesting thoughts, has anyone ever dreamed about "being a small fish pursuit by a bigger one, and felt the bloody mouth of the hunter", thus feel the feeling/thoughts of the instances ? Actually, this shouldn't be discussed here, so that, in fact, what I really hope to learn is , more inspirations about SPICE modeling. If you could kindly help more inspirations. Thank you very much. Best regards. ---In LTspice@..., <jmw@...> wrote : Yes, there are many models of black holes, but none, I suppose, that are compatible with LTspice! No existing models are considered satisfactory. More research is, of course, needed. There is a good explanation of the distorting effects of black hole gravity on space-time in 'From Eternity to Here' by Sean Carroll, ISBN9781-85168-795-4. If the Universe is a black hole (as has indeed been suggested), we would almost certainly not be able to prove it, because we are inside it. Your question about 'outside it' is meaningless in terms of what we can know, and may be absolutely meaningless, by which I mean that if there are other black hole Universes, that might observe ours, no-one there could tell what is happening inside our Universe. Opinion is divided on whether other Universes
exist, and whether they could have different Laws of Physics,
such as you suggest, where time-travel is easy and
three-dimensional, but space is one-dimensional and space travel
is not easy. Note that physical bodies cannot exist in a
Universe with fewer than two space dimensions, and living bodies
as we know them require three dimensions. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates Rayleigh, Essex UK On 2018-11-23 03:13,
ericsson.sunshine@... [LTspice] wrote: ? |
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Re: Have anyone built black hole model already ?
Hello, John:
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Show quoted text
Thank you for the replies. Though several days ago, I would like someone could suggest some materials (textbook) about the semiconductors, electron-hole pairs, carriers, etc. Everything needed for a SPCE modeling. I even don't have the concept of where to begin. (Though I have heard "CMOS circuit design layout and simulation", but I am not sure if that's enough. And haven't done reading it yet.) Though same "hole" things in this thread, but size is completely different. I have less things to say about black hole and the space things, I agree what you have said about the 1-dimension or 3-dimension, that's what I am familiar about, too. The idea is just an illusion. As you said , no one could prove it. Especially this/(those) body(ies) none exist in space (has no dimensions/size). No bodies...so that, I just think if the time-space is exchanged, time could be traveled, and space couldn't be traveled, but still in it, how to explain ? does that mean, fully filled the space , feel the all space ? Have (in) it all, but couldn't travel move forward/backward. Just some interesting thoughts, has anyone ever dreamed about "being a small fish pursuit by a bigger one, and felt the bloody mouth of the hunter", thus feel the feeling/thoughts of the instances ? Actually, this shouldn't be discussed here, so that, in fact, what I really hope to learn is , more inspirations about SPICE modeling. If you could kindly help more inspirations. Thank you very much. Best regards. ---In LTspice@..., <jmw@...> wrote : Yes, there are many models of black holes, but none, I suppose, that are compatible with LTspice! No existing models are considered satisfactory. More research is, of course, needed. There is a good explanation of the distorting effects of black hole gravity on space-time in 'From Eternity to Here' by Sean Carroll, ISBN9781-85168-795-4. If the Universe is a black hole (as has indeed been suggested), we would almost certainly not be able to prove it, because we are inside it. Your question about 'outside it' is meaningless in terms of what we can know, and may be absolutely meaningless, by which I mean that if there are other black hole Universes, that might observe ours, no-one there could tell what is happening inside our Universe. Opinion is divided on whether other Universes
exist, and whether they could have different Laws of Physics,
such as you suggest, where time-travel is easy and
three-dimensional, but space is one-dimensional and space travel
is not easy. Note that physical bodies cannot exist in a
Universe with fewer than two space dimensions, and living bodies
as we know them require three dimensions. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates Rayleigh, Essex UK On 2018-11-23 03:13,
ericsson.sunshine@... [LTspice] wrote: ? |
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Re: introduction of a new vacuum tube spice model approach
Hi analogspiceman
A comparison is good idea - here it is. As supposed, the two other models (Koren and Rydel) found here are not able to describe the "Anlauf" current. Also, the contact voltage seams to be just some mV, way off reality... Furthermore, the Rydel model's gm factor is a hole decade to low - not recommendable for use! kind regards, Adrian |
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Re: Adjusting Bode plot phase
¿ªÔÆÌåÓýI have read the paper, and I recommend reading it, as it is very well written and fairly easy to understand. I agree with Andy that the voltage source should be applied at the left end of the line, not from one end to the other. One of the few faults in the paper is that it doesn't show the source in several cases; I suspect that for some of the models that the authors do not like the source should be a current source. Distributed RC lines are quite interesting;
they can even be used as tuned circuits. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates Rayleigh, Essex UK On 2018-11-25 07:07, Andy
ai.egrps@... [LTspice] wrote:
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Re: LTSpice Model for Photo Triac - VOM160
Hello Andy. I occasionally have this situation (an additional extension txt is added). It annoys me. I do rename (delete txt). But since I rarely download models (I already have a lot of them), I put up with it. ? Bordodynov. 25.11.2018, 11:52, "Andy ai.egrps@... [LTspice]" <ltspice@...>:
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Re: LTSpice Model for Photo Triac - VOM160
Eric, I imagine that the Chrome browser you use probably does the same thing as Windows Explorer: it displays the icon that Windows passes it, just the same as Windows Explorer does. I've read that some web browsers change the filenames of some files when they downloaded them (by adding ".txt" for example to the end of the file).? I guess they probably do that to make it easier for you to open a text file even if the file you downloaded didn't already have a ".txt" on its filename.? I don't know if it's a setting you can change.? But not all web browsers do that. Regarding the waveform plot colors, yes, a number of us change our color settings.? Me, I also find the blue waveform to be close to invisible on the black background, so I've always set my LTspice waveform colors differently.? What I do even differently from you, is to use a white (or very light grey) background.? I'm not the only one doing that.? I am not sure why I like dark waveforms on a light background, because oscilloscopes didn't do that; but I find it more pleasing to my eye. Regards, Andy |
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Re: Adjusting Bode plot phase
Jerry, I have not read the paper you referred to, but regarding your simulation, I wonder why you connected a voltage source between the ends of the RC line?? Unless I'm wrong, it looks as if you still want to do that.? I'm wondering, why is that a useful thing to do, and what does it tell you?? I may be the "dummy" here, but it seems to me that the purpose of the RC ladder network was to have one end as the "input" and the other end as the eventual "output".? That doesn't happen if you connect a voltage source between the ends. To show how much of a dummy I am, I didn't know what "EIS spectrum" meant, so I looked it up.? It is the Electrochemical Impedance Spectroscopy spectrum.? I think it has something to do with measuring the impedance of an electrochemical cell, which I think I understand, but there is a lot more to it that I don't understand.? Apparently it is customary to use Nyquist plots when doing this.? I don't know if it is the same kind of Nyquist plots that EEs are accustomed to using. I'm just worried that we may not be speaking the same language as one another. Regards, Andy |
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Re: Problem description with ADG511 switch
Hi Helmut, I see. Now I'm getting how the plots appear automatically. It's helpful. Thanks for clearing that up. Thanks Naim
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Re: LTSpice Model for Photo Triac - VOM160
Hi Andy, Thank you really for so much patience from you to find explanations. Pls see my upload of the pdf screenshot what I see on my laptop. I don't use? windows explorer but I have windows 10.? I use chrome browser. Also I don't do any settings change on my laptop especially regarding downloads. I'm not good at it and afraid something wrong might happen. I just use default settings. Anyway thank you once again!. I'm learning quite a lot browsing thru the LTSpice Help Menu.? Now I found that the colors of the waveform plots can actually be altered to your liking especially the dark blue ones that could barely be seen on black screen background.? So I got them in pink, yellow, white, etc. , for easier visibility :). Best regards, Eric
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Re: introduction of a new vacuum tube spice model approach
Hello Adrian, I noticed that somebody else uploaded a prior 6AL5 tube model.? It would be interesting to compare it to your new model. ---In LTspice@..., <adrian_immler@...> wrote : Hello everybody Be aware of my latest tube fit, a Tungram 6AL5 vacuum diode model, able to accurate describe the "Anlauf" current. I have added the 6AL5 model to my tube library zip: The excellent fit quality is presented here: This new model offers you the possibility of accurate simulating audion stages, signal level detection circuits, ring modulators (with matched pairs only) and this kind of stuff. kind regards, Adrian |
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Re: Adjusting Bode plot phase
Hi Helmut,
I downloaded the file and the Bode plot of V(z) matches the paper. I wish to generate the EIS spectrum of the ladder and produce a Nyquist plot.? The plot should start as a straight line of unit slope in the high frequency region and then trend to a semi-circle in the low frequency domain.? When I hook the sine-wave source across the ends as I had done in the original circuit and plot V(N002)/I(R11) I obtain this type of behavior, but I am not certain that I can use the input voltage and the output current for this analysis.? Your thoughts will be appreciated. Thanks and best regards, Jerry |
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Re: Problem description with ADG511 switch
Hi Helmut, Thanks a lot for pointing out the issue and the schematic example. I could never find it out by myself. As a newbie, I was having issues converting the subcircuit to a symbol too. Also thanks for the GNUplot script, which I don't know how to use at this point but will dig into it definitely. From the subcircuit description of the switch, I could feel something fishy is going on with pin 12, so I connected it to GND once but no luck. I'm glad I didn't solve it myself otherwise I wouldn't find this group out. Such an active community full of experts! Thanks again. I'll reach out if I have any issue in future for sure. Naim P.S. You're correct that they've made the same mistake in all the variants of the switches. I'll inform ADI about that.
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John Woodgate