¿ªÔÆÌåÓý

Date

Re: Analog Devices to buy LT!

 

On 8/13/16 10:13 AM, 'John Woodgate' jmw1937@... [LTspice] wrote:

Alpha software versions are private trial versions. Beta versions are for public trial.

Note quite in my experience, there are public and private betas for different products.


Alpha is the first round of testing while the product is still under development. Often there are significant missing features and numerous known bugs in the alpha version, but parts are working well enough to get feedback. Because of the issues, Alpha testing tends to be confined to people close to the developer.

Beta is a second round of testing. At the Beta level, the product is largely feature complete, although for larger products, there may be some sub sections of the product which may still really be at the Alpha level. Generally there are few to no 'show stopper' bugs, and the product is basically usable, but maybe not reliable. Beta testing can be sent to a wide audience, looking for bug reports and usability issues.

At the end of the Beta cycle you get Release Candidates, which are feature complete, and generally believed bug free, and are looking for extensive testing to find any latent bugs.

When a Release Candidate passes Quality, it becomes the Released Version.


--
Richard Damon


Re: My DFF FLIPs but it does not want to FLOP

Gunoi Nare
 

The UPLOAD BUTTON is not working on this link. Clicking on it nothing happens.
G



From: "helmutsennewald@... [LTspice]"
To: LTspice@...
Sent: Sunday, August 14, 2016 8:00 AM
Subject: [LTspice] Re: My DFF FLIPs but it does not want to FLOP

?
Hello,

I don't see your file in the Files-section.
Please upload it to this place below.


Best regards,
Helmut
?
?





Re: My DFF FLIPs but it does not want to FLOP

 

Hello,

I don't see your file in the Files-section.
Please upload it to this place below.


Best regards,
Helmut

?

?



My DFF FLIPs but it does not want to FLOP

 

I hate cryptic error messages...

Perhaps the author(s) of the program could add some possible solutions to solve the encountered errors?I
?I know I'm only dreaming.


I just uploaded a zipped file. The schematic .asc and a .jpeg screen print of the displayed error.

It's name is DFF ERRRRR.zip.


Can any one telme what I do wrong?

G.


Re: Group Milestone

John Woodgate
 

¿ªÔÆÌåÓý

I haven¡¯t seen much mention of the book sponsored by Wuerth, the 744-page English version being 'THE LTSPICE IV SIMULATOR' by Gilles Brocard, professionally translated from the French. There is also a German version. It's very comprehensive, but I admit I don't find it a joy to use. However, it must restrict the market for other such books.

?

With best wishes DESIGN IT IN! OOO ¨C Own Opinions Only

J M Woodgate and Associates Rayleigh England

?

Sylvae in aeternum manent.

?

From: LTspice@... [mailto:LTspice@...]
Sent: Sunday, August 14, 2016 10:57 AM
To: LTspice@...
Subject: RE: [LTspice] Group Milestone

?

?

...being a Yahoo Group owner myself (see: ),

?I think John has a point.

?One reason to ask Mike E. and Helmut about their "book plans" is that? the original progenitors? of this site

?need to be sure that IF it is -- or needs to be-- replaced with something ..that something...is a "something

better".

?Obviously this is a "labor of love" for many members..emotional rewards as well as the standard intellectual

?ones.? That Mike and Helmut might be some financial compensation...or that John gets few consulting

contacts/contracts for his efforts (and/or Vlad as well) is icing on a big cake.

I have yet to make a solid nickle on my Yahoo pages...but you never know....marketing people tell me to

"g et pushier" on my emails...but not in my nature to yank cords...especially discussing $10,000 video

equipment.?

Good work all.?? W. Warren

?

)


Re: Group Milestone

 

...being a Yahoo Group owner myself (see: ),

?I think John has a point.

?One reason to ask Mike E. and Helmut about their "book plans" is that? the original progenitors? of this site

?need to be sure that IF it is -- or needs to be-- replaced with something ..that something...is a "something

better".

?Obviously this is a "labor of love" for many members..emotional rewards as well as the standard intellectual

?ones.? That Mike and Helmut might be some financial compensation...or that John gets few consulting

contacts/contracts for his efforts (and/or Vlad as well) is icing on a big cake.

I have yet to make a solid nickle on my Yahoo pages...but you never know....marketing people tell me to

"get pushier" on my emails...but not in my nature to yank cords...especially discussing $10,000 video

equipment.?

Good work all.?? W. Warren


)


Re: Group Milestone

John Woodgate
 

¿ªÔÆÌåÓý

The only way to find the number of active users is to hold a survey. We could count posters, but ?there are members who joined many years before they made their first post. So we really have two or even three ?'grades' ?(not orders of merit, of course) of active members:

?

¡¤??????? Users who haven't posted;

¡¤??????? Users who have posted at least once;

¡¤??????? Users who post nearly every day.

?

With best wishes DESIGN IT IN! OOO ¨C Own Opinions Only

J M Woodgate and Associates Rayleigh England

?

Sylvae in aeternum manent.

?

From: LTspice@... [mailto:LTspice@...]
Sent: Sunday, August 14, 2016 7:22 AM
To: LTspice@...
Subject: Re: [LTspice] Group Milestone

?

?

> Currently at 60028 LTspice users and would-be users.

While I can't help wondering about the relative percentage of active users, it's still? something to realize that it was that small group that kept the group alive and kicking.


Vlad
______________________
-- holding, among others:
a universal analog/digital filter, block-level models
for power electronics (and not only), math blocks
with a more stream-lined approach, some digital
ADC, DAC, (synchronous-)counter, JKflop, etc.


Re: Group Milestone

 

> Currently at 60028 LTspice users and would-be users.

While I can't help wondering about the relative percentage of active users, it's still? something to realize that it was that small group that kept the group alive and kicking.

Vlad
______________________
-- holding, among others:
a universal analog/digital filter, block-level models
for power electronics (and not only), math blocks
with a more stream-lined approach, some digital
ADC, DAC, (synchronous-)counter, JKflop, etc.


Re: Analog Devices to buy LT!

 

> I am not sure if Mike Engelhardt actually referred to this test version (when it was a test version) as being in alpha-test.

Me neither. I was just "reciting" what was (and still is) written in XVII's changelog. BTW, does anyone know if the changelog is written somewhere else, if at all? It seems to be untouched after every update.

Vlad
______________________
-- holding, among others:
a universal analog/digital filter, block-level models
for power electronics (and not only), math blocks
with a more stream-lined approach, some digital
ADC, DAC, (synchronous-)counter, JKflop, etc.


Re: Group Milestone

 

Hello,

I am happy that the LTspice group is successful since 14 years. Thanks to all who asked questions and to all who helped to answer these questions.?

LTspice is a fast SPICE program, more compatible to third party models than many other SPICE programs, it's free of charge and supported for free in many groups. I am sure that this great support in groups like the LTspice group is due to it's free license to use.?

Last but not least thanks to Mike, the author of LTspice, for his mission to make the best SPICE program and to make it available for free.

Thanks to Yahoo which has kept all the groups' features over two? decades.?The main feature of Yahoo groups for the LTspice-group is the files section.?Let's hope Verizon will not reduce the features next year.?

Best regards,
Helmut


Re: Analog Devices to buy LT!

 

Specifically, "XVII alpha" referred to the alpha-test version of LTspice XVII.

Alpha-test comes first, then beta-test, then the real released product.

I am not sure if Mike Engelhardt actually referred to this test version (when it was a test version) as being in alpha-test.

Regardless, it is no longer in the 'test' phase.? It is released to the public. ?

Andy

?


Re: Probing phase

 

One thing to remember is that in reality, a single signal doesn't have a phase, and phase is only meaningful in frequency domain, or with a single frequency excitation. This is because in reality we don't have an absolute time 0 (or it is so far ago it isn't meaningful to use it). In time domain simulations we have an artificial T0.

Since in reality, all phases are relative to something, changing the something and direction is mostly a matter of convention and what helps the intuition.

On 8/13/16 9:18 AM, Steve Kale stevekale@... [LTspice] wrote:

Hi


Any takers for my remaining questions below?

Thanks in advance

Steve

On 9 Aug 2016, at 19:57, Andy wrote:

A differential measurement doesn't show the phase between the two points. It would show you the differential voltage between those two points.

It can show you the magnitude and the phase of that one voltage. But it definitely would not be the phase between one voltage and the other.
Ok. "Phase of that one voltage"...Phase of the differential? (Not so intuitive to a newbie.)

I¡¯ve clearly been getting confused between whether the graph portrays phase (excluding the op amp's 180 degrees) or phase margin directly. Various tutorials are rather ¡°loose¡± in this respect.

Plus the impact of the minus sign. In the example I posted, if it is not applied then the graph would read +89 degrees (phase margin?). If it is applied then the graph reads -91 degrees. It seems odd to talk about a negative margin but Helmut had some time ago told me to plot with the minus sign. Helmut¡¯s previous advice:

"1. why -V(Vout)/V(Y) rather than V(Vout)/V(Y) ?

You would get a positive phase instead of a negative phase and we know from experience the phase must be negative. :-)"
--
Richard Damon


Re: Analog Devices to buy LT!

John Woodgate
 

¿ªÔÆÌåÓý

Alpha software versions are private trial versions. Beta versions are for public trial.

?

With best wishes DESIGN IT IN! OOO ¨C Own Opinions Only

J M Woodgate and Associates Rayleigh England

?

Sylvae in aeternum manent.

?

From: LTspice@... [mailto:LTspice@...]
Sent: Saturday, August 13, 2016 2:55 PM
To: LTspice@...
Subject: Re: [LTspice] Re: Analog Devices to buy LT!

?

?

What is XVII alpha ? It looks like biochemical syntax.

- H.

Vlad imbvlad@... [LTspice] schrieb:
> How will this affect LTspice? These news come very soon after the XVII
> alpha, it sounds very strange for me. I hope things will not change for
> Mike's sector.


Re: Analog Devices to buy LT!

ehydra
 

What is XVII alpha ? It looks like biochemical syntax.

- H.


Vlad imbvlad@... [LTspice] schrieb:

How will this affect LTspice? These news come very soon after the XVII
alpha, it sounds very strange for me. I hope things will not change for
Mike's sector.


Re: course of HOWTO build models like (sanken) STR-A6100

 

Hi, eetech00:

Thank you. I am trying to route a application schematic.
If I get any question ,will let you know.

Best regards.


Re: Probing phase

Steve Kale
 

¿ªÔÆÌåÓý

Hi

Any takers for my remaining questions below?

Thanks in advance

Steve

On 9 Aug 2016, at 19:57, Andy wrote:
?
?A differential measurement doesn't show the phase between the two points. It would show you the differential voltage between those two points.??
?
?It can show you the magnitude and the phase of that one voltage. But it definitely would not be the phase between one voltage and the other.
?

Ok. "Phase of that one voltage"...Phase of the differential? (Not so intuitive to a newbie.)

I¡¯ve clearly been getting confused between whether the graph portrays phase (excluding the op amp's 180 degrees) or phase margin directly. Various tutorials are rather?¡°loose¡±?in this respect.

Plus the impact of the minus sign. In the example I posted, if it is not applied then the graph would read +89 degrees (phase margin?). If it is applied then the graph reads -91 degrees. It seems odd to talk about a negative margin but Helmut had some time ago told me to plot with the minus sign. Helmut¡¯s previous advice:

"1. why -V(Vout)/V(Y) rather than V(Vout)/V(Y) ?

You would get a positive phase instead of a negative phase and we know from experience the phase must be negative. :-)"




Re: Henry's current transformer problem

 

Henry wrote:
"They have said though that the one we are using has a high permeability core designed for low frequency.

Also that it consists of 80% Nickel."

This sounds much more like Mu-metal to me, especially regarding susceptibility to mechanical shock.

?

Regards,
Tony


Group Milestone

 

Everyone,

In the last day or two, this group has reached a significant milestone.? It has for the first time gone over 60000 group members.

Currently at 60028 LTspice users and would-be users.

There are ups and downs all the time, so I can't guarantee that it will stay above 60000, every day.

But I thought it was worth mentioning.? Great group, indeed.

Regards,
Andy



Re: SchBuilder.exe Windows10 #SchBuilder

 

Yes...no issues


Re: course of HOWTO build models like (sanken) STR-A6100

 

Hello

I'm uploading a UCC25600 for testing