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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.

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:

?

Hi, :


I am curious about the black hole, so though it's almost impossible, but ...maybe someone who might have studied that before...that's did anyone study hard about the black hole very well and? have built black hole model already ?


Recently, I heard that, there is theoretically sayings which states "in the black hole, the time-space is exchanged,? which says in the black hole, the moving-direction is only one way direction, and the time for the one inside the black hole is very slow (from viewpoint of the outside one from black hole), it seems meaning, in the black hole, space is only one way direction while the time could be varying forward ,backward, rightward, leftward, etc.(time-space exchanged)" , so that this saying caused me the question , is that possible that we are all living in a bigggggg BLACK HOLE, which includes the whole universe, and in this bigggggg BLACK HOLE, the time is one way direction, the space is traveling-abled,? as we experienced so far, but if this theory states is correct, would that means outside this bigggggg BLACK HOLE, OUT THERE, time is traveling-abled, and space is .....one way direction- LINED UP ? I don't quite know what's that, so that's why I'm here and the request, I hope to know more about the black hole , have anyone already built one ?


Thank you very much


Best regards.
CD4060 and CD4063 LTSpice models needed

[email protected]
 

Hi everyone


I need CD4060 and CD4063 LTSpice models, .subckt and .asy files.


Thanks in advance.
Re: Have anyone built black hole model already ?

 

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:

?

Hi, :


I am curious about the black hole, so though it's almost impossible, but ...maybe someone who might have studied that before...that's did anyone study hard about the black hole very well and? have built black hole model already ?


Recently, I heard that, there is theoretically sayings which states "in the black hole, the time-space is exchanged,? which says in the black hole, the moving-direction is only one way direction, and the time for the one inside the black hole is very slow (from viewpoint of the outside one from black hole), it seems meaning, in the black hole, space is only one way direction while the time could be varying forward ,backward, rightward, leftward, etc.(time-space exchanged)" , so that this saying caused me the question , is that possible that we are all living in a bigggggg BLACK HOLE, which includes the whole universe, and in this bigggggg BLACK HOLE, the time is one way direction, the space is traveling-abled,? as we experienced so far, but if this theory states is correct, would that means outside this bigggggg BLACK HOLE, OUT THERE, time is traveling-abled, and space is .....one way direction- LINED UP ? I don't quite know what's that, so that's why I'm here and the request, I hope to know more about the black hole , have anyone already built one ?


Thank you very much


Best regards.
Re: introduction of a new vacuum tube spice model approach

 

Oops!
Here the missed link...?


regards, Adrian
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
Re: Adjusting Bode plot phase

 

¿ªÔÆÌåÓý

I 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:

?
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
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@...>:

?

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
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
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
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


On Sat, Nov 24, 2018 at 5:11 PM helmutsennewald@... [LTspice] <LTspice@...> wrote:
?

Hello Naim,

> Also thanks for the GNUplot script, ...

This ".plt" file is the plot settings file of LTspiceXVII. It contains the plot settings for future simulations. It has nothing todo with Gnuplot.

Plot Settings -> Save Plot Settings


Best regards,
Helmut
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


On Sat, Nov 24, 2018 at 1:41 AM Andy ai.egrps@... [LTspice] <LTspice@...> wrote:
?

Eric, I still don't see a "2 input and gate" in a drawing or a filename, so I'm not sure what you were talking about.? I don't see "NPN bjt transistor" before filenames either.? I don't know where you are looking when you see that.? Oh well.

Any symbol file (any filename ending in .ASY, if it came from LTspice) can be put into the "sym" directory.

? ? "Bordodynov's file name has "..asy" after it but no "and gate" or "npn" drawing icon before it so I'm not sure where to save that kind of file."

Wait -- now I might understand what you mean.? Are you talking about the icons that you see in Windows Explorer?? Ah-ha!? (Light turns on in head.)

When Windows sees a filename ending in ".asc", it uses the icon for an LTspice schematic file, which is a tiny transistor symbol.? When Windows sees a filename ending in ".asy", it uses the icon for an LTspice symbol file, which is the AND gate.? This must be what you're talking about, right?? These icons are put there by Microsoft Windows, based only on the filename's extension.? So when Bordodynov's file didn't have the AND gate icon in Windows on your computer, that meant its filename did not really end in ".asy".

And -- here's the thing -- that probably means that you have your computer set up to "Hide extensions for known file types".? Bordodynov's file, when it was downloaded to your computer, probably picked up a ".txt" extension (from your web browser), so it was saved as "MOC3083.asy.txt", but Windows hid the ".txt" from you so it looked like "MOC3083.asy".? But that was not the real filename.? In my opinion, this is a really bad feature of Microsoft Windows!? You can disable it by opening Windows Explorer and going to Tools > Folder Options > View, then UN-check "Hide extensions for known file types".? In my opinion, having it checked is dangerous, for all but the casual PC users who don't want to know what filenames mean.

If this is what happened, then you should rename Bordodynov's symbol file to get rid of the ".txt" extension.? LTspice wouldn't see it as a valid symbol file unless it really ends in ".asy".

Regards,
Andy
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
Re: Adjusting Bode plot phase

 

Hello Jerry,

LTspice can plot Bode, Nyquist and Cartesian. Due to the range of 10kOhm down to 0.1mOhm for Z, it doesn't make sense to make a Nyquist-plot. Bode or Cartesian looks more readable for plotting Z with this circuit.

Best regards,
Helmut
Re: Problem description with ADG511 switch

 

Hello Naim,

> Also thanks for the GNUplot script, ...

This ".plt" file is the plot settings file of LTspiceXVII. It contains the plot settings for future simulations. It has nothing todo with Gnuplot.

Plot Settings -> Save Plot Settings


Best regards,
Helmut
Re: Rectifier with thyristor

 

Since the 100 ohm load resistors are in parallel with one another, why have three of them?? Simpler to use one 33 ohm resistor.

Regards,
Andy
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
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.


On Sat, Nov 24, 2018 at 12:29 PM helmutsennewald@... [LTspice] <LTspice@...> wrote:
?

Hello Naim,

Hello Naim,
I have checked your uploaded netlist.

This model requires a logic supply voltage VL (pin 12) connected to Vdd. It's a mistake from ADI when they made this subcircuit. This pin is NC on the real IC. Especially older analog-switch ICs required? this VL for the internal logic circuit of the IC, but not ADG511, ADG512, ADG513.

Required change of X1
X1 IN1 D1 S1 Vss 0 0 0 0 0 0 0 Vdd Vdd 0 0 0 ADG511¡À5 ; using switch 1 only, VL connected!

The ADG511 switches will be on, if IN1 is 0V.
If you want it in on-state, then set Vin1 to 0.
Vin1 IN1 0 0.0 Rser=.2 Cpar=1p??? ??? ; control pin, 0 V => on, 5 V => off

I have uploaded a schematic example using the symbol DIP16, because a schematic is much easier to understand the circuit.
ADG511_test.zip

Just unzip this file anywhere. You can then immediately simulate my example.

Please report this "wrong" pin VL in the interface of the model of ADG511DS.CIR to ADI. They may have made the same mistake with all variants of ADG511, ADG512 and ADG513. The email address is below.

Best regards,
Helmut

Excerpt from the subcircuit. Watch VL(pin 12). Pin-12 used in the subcircuit.

* Node assignments
*????????????????? IN1
*????????????????? | D1
*????????????????? | | S1
*????????????????? | | | VSS
*????????????????? | | | | GND
*????????????????? | | | | | S4
*????????????????? | | | | | | D4
*????????????????? | | | | | | | IN4
*????????????????? | | | | | | | | IN3
*????????????????? | | | | | | | | | D3
*????????????????? | | | | | | | | | |? S3
*????????????????? | | | | | | | | | |? |? VL
*????????????????? | | | | | | | | | |? |? |? VDD
*????????????????? | | | | | | | | | |? |? |? |? S2
*????????????????? | | | | | | | | | |? |? |? |? |? D2
*????????????????? | | | | | | | | | |? |? |? |? |? |? IN2
*????????????????? | | | | | | | | | |? |? |? |? |? |? |
.SUBCKT ADG511¡À5?? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Re: Problem description with ADG511 switch

 

Hello Naim,

Hello Naim,
I have checked your uploaded netlist.

This model requires a logic supply voltage VL (pin 12) connected to Vdd. It's a mistake from ADI when they made this subcircuit. This pin is NC on the real IC. Especially older analog-switch ICs required? this VL for the internal logic circuit of the IC, but not ADG511, ADG512, ADG513.

Required change of X1
X1 IN1 D1 S1 Vss 0 0 0 0 0 0 0 Vdd Vdd 0 0 0 ADG511¡À5 ; using switch 1 only, VL connected!

The ADG511 switches will be on, if IN1 is 0V.
If you want it in on-state, then set Vin1 to 0.
Vin1 IN1 0 0.0 Rser=.2 Cpar=1p??? ??? ; control pin, 0 V => on, 5 V => off

I have uploaded a schematic example using the symbol DIP16, because a schematic is much easier to understand the circuit.
ADG511_test.zip

Just unzip this file anywhere. You can then immediately simulate my example.

Please report this "wrong" pin VL in the interface of the model of ADG511DS.CIR to ADI. They may have made the same mistake with all variants of ADG511, ADG512 and ADG513. The email address is below.
LTspice@...

Best regards,
Helmut

Excerpt from the subcircuit. Watch VL(pin 12). Pin-12 used in the subcircuit.

* Node assignments
*????????????????? IN1
*????????????????? | D1
*????????????????? | | S1
*????????????????? | | | VSS
*????????????????? | | | | GND
*????????????????? | | | | | S4
*????????????????? | | | | | | D4
*????????????????? | | | | | | | IN4
*????????????????? | | | | | | | | IN3
*????????????????? | | | | | | | | | D3
*????????????????? | | | | | | | | | |? S3
*????????????????? | | | | | | | | | |? |? VL
*????????????????? | | | | | | | | | |? |? |? VDD
*????????????????? | | | | | | | | | |? |? |? |? S2
*????????????????? | | | | | | | | | |? |? |? |? |? D2
*????????????????? | | | | | | | | | |? |? |? |? |? |? IN2
*????????????????? | | | | | | | | | |? |? |? |? |? |? |
.SUBCKT ADG511¡À5?? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Problem description with ADG511 switch

 

Hi,

I have uploaded a file 'Test_switch_ADG511.zip' in 'Files/Temp/' containing problem description with LTSpice simulation for an ADG511 switch. The switch is not behaving the way it is supposed to. More details can be found inside the zip folder in 'Notes.txt' file. I would appreciate if someone takes a look at it.

Thanks
Naim
Re: Rectifier with thyristor

 

Hello Mikos,

> At night I was thinking this circuit. If you see this circuit:? you can see, that the thyristor conduct the negative period, too. In the LTspice the thyristor turn off near 0V. I read a book, and I think, the LTSpice don't simulate right.

LTspice has correctly simulated in my uploaded schematic from yesterday. You need an inductive load, if you want that the SCR conducts in during the negative input voltage too. You can try this by adding a 1Henry inductor in series to each 100Ohm load resistor.

Best regards,
Helmut
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