EAGLE Netlist conversion

[Kevin Aylward]

AB wrote:

Hey all,

I started playing with Circuitmaker 6 months ago and love the Spice
modeling capability.

However, the program has a very limited library...strictly common
transistors, diodes and common IC's are included.

This must be the demo.

Needless to say, it doesn't have a photodiode and forget trying to do
a switching power supply because the chips aren't available to use in
the simulation.

So....I found this newsgroup and hoped for some answers by reading the
archives. However, there seems to be a bunch of types of Spice and I'm
confused.

Not really. Spice is a reasonably standard format.

What type of Spice should I get and how do I get all the different
models for devices that I might need???

Some spices comes with huge libraries, but in general, this is not such
a main issue. All component vendors produce models for most of their
parts. You simply go to their web sites. You can also modify existing
models.

I've worked in electronics since graduating from college (in 75), and
Spice seems awful complicated and there seems to be many different
types of Spice.

Suggestions anyone??

Well, I will obviously suggest SuperSpice, as I consider it the easiest
spice to use in the known universe. Install, load the demos, and press
the blue "R" button. Oh, there is a photo diode example circuit.


Kevin Aylward
salesEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

 

[Active8]

In article <H1_%a.47$tS2.3890@newsfep2-win.server.ntli.net>,
kevin@anasoft.co.uk says...

Active8 wrote:
hi:

maybe the ABM2 part isn't appropriate for this. i want to model a
phase detector's gain, Kp. can't use VP(%IN1), etc. in the expression
since it's a probe function and of course TIME won't work since it'll
be the same for that time slice.

what do i need to do to get Kp in V/rad, rad being the phase diff of
the 2 inputs?


Im not really clear on what your trying to do. However, if you are
making a small signal model of pll, then there is nothing to model for
the phase detector. Its Kp, i.e. an amplifier. The model is already a
volts/phase model. The phase detector is a subtracter.

model of what? an opamp? how do you input 2 out of phase signals to an
amp and get a voltage output proportional to the phase diff. without any
filtering?

i need a numerical value for the phase error. *that* could be amplified.

i'm going to model the G(s)H(s) but rather than inputting the phase
error as a number, i want to determine it from 2 signals. then i'm going
to use a Laplace part for the filter.

as far as simulating a circuit goes, the subtractor doesn't do the same
thing that pll phase detectors do. on a pll you get a pulse showing the
phase error of the leading edges, not that *and* the falling edge.
that'll work if i clip it, though. i should clarify. an XOR gives
positive pulses for both edges but a subtractor give a negative pulse on
the falling edges. the type II detectors only output a neg pulse if the
VCO is lagging.

br,
mike

Kevin Aylward
salesEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

 

[Kevin Aylward]

Active8 wrote:

In article <H1_%a.47$tS2.3890@newsfep2-win.server.ntli.net>,
kevin@anasoft.co.uk says...
Active8 wrote:
hi:

maybe the ABM2 part isn't appropriate for this. i want to model a
phase detector's gain, Kp. can't use VP(%IN1), etc. in the
expression since it's a probe function and of course TIME won't
work since it'll be the same for that time slice.

what do i need to do to get Kp in V/rad, rad being the phase diff of
the 2 inputs?


Im not really clear on what your trying to do. However, if you are
making a small signal model of pll, then there is nothing to model
for the phase detector. Its Kp, i.e. an amplifier. The model is
already a volts/phase model. The phase detector is a subtracter.

model of what? an opamp? how do you input 2 out of phase signals to an
amp and get a voltage output proportional to the phase diff. without
any filtering?

I am referring to a standard way of doing a *model* of pll systems. Its
a model of a model model. That is, the model is representation of what's
going on. i.e. the phase detector is a subtractor, the vco is a k/s
function etc.

i need a numerical value for the phase error. *that* could be
amplified.

i'm going to model the G(s)H(s) but rather than inputting the phase
error as a number, i want to determine it from 2 signals. then i'm
going to use a Laplace part for the filter.

If you want to model the system as a "real" model, then you need to
model the electronics. For example, a multiplier will generate a "real"
phase signal as a function of two inputs. Or you could use a digital
implementation of a phase-frequency detector.

as far as simulating a circuit goes, the subtractor doesn't do the
same thing that pll phase detectors do.

I guess, you aint familiar with some common methods of analysing plls. I
agree in the real domain, they are not the same, but in the model of the
model domain it is. That why I noted that I was not clear on what you
were trying to do.

on a pll you get a pulse
showing the phase error of the leading edges, not that *and* the
falling edge. that'll work if i clip it, though. i should clarify. an
XOR gives positive pulses for both edges but a subtractor give a
negative pulse on the falling edges. the type II detectors only
output a neg pulse if the VCO is lagging.

So, this still makes it unclear. A real pll uses multipliers, ex-ors,
edge triggered bistables. etc, to generate a signal as a function of
phase/frequency, so use one of them!.

Kevin Aylward
salesEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

 

[Active8]

[snip]

If you want to model the system as a "real" model, then you need to
model the electronics.

ABM *is* in the subject line for a reason, AFAIK.

For example, a multiplier will generate a "real"
phase signal as a function of two inputs. Or you could use a digital
implementation of a phase-frequency detector.

and the 4-quadrant multiplier is *not* the same as the arithmetic
multiplier i found in the ABM library, right?

as far as simulating a circuit goes, the subtractor doesn't do the
same thing that pll phase detectors do.

I guess, you aint familiar with some common methods of analysing plls.

not in spice. paper.. sure. not to mention the vendor programs
available. forget plls. i want to do some laplace math. plls are just
one use.

[snip]

forget plls for a sec. i was hoping to model the phase detector gain
without building one with XORs or anything like that. i was hoping for a
way to get a numerical value for the phase error and use it in an
expression. so if i wan't to simulate a Kp of say, .1 V/rad my
expression would be .1*rad

not doable?

if i model:

Kp.Kv.Kn.Kf
G(s)H(s) = -----------
s

i'm thinking i can step the phase error and watch the response. maybe
even get a plot in the complex plane. yes i know i can just use a
parameter, but i thought i'd use a ref freq and a behavioral VCO.

thanks,
mike

Kevin Aylward
salesEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

 

[Jim Thompson]

On Mon, 18 Aug 2003 15:37:29 GMT, Active8
<mcolasono@earthlink.net.invalid> wrote:

[snip]

not in spice. paper.. sure. not to mention the vendor programs
available. forget plls. i want to do some laplace math. plls are just
one use.

[snip]

forget plls for a sec. i was hoping to model the phase detector gain
without building one with XORs or anything like that. i was hoping for a
way to get a numerical value for the phase error and use it in an
expression. so if i wan't to simulate a Kp of say, .1 V/rad my
expression would be .1*rad

not doable?

if i model:

Kp.Kv.Kn.Kf
G(s)H(s) = -----------
s

i'm thinking i can step the phase error and watch the response. maybe
even get a plot in the complex plane. yes i know i can just use a
parameter, but i thought i'd use a ref freq and a behavioral VCO.

thanks,
mike

[snip]

Look up ELAPLACE in the PSpice help.

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

 

[Kevin Aylward]

Active8 wrote:

If you want to model the system as a "real" model, then you need to
model the electronics.

ABM *is* in the subject line for a reason, AFAIK.

For example, a multiplier will generate a "real"
phase signal as a function of two inputs. Or you could use a digital
implementation of a phase-frequency detector.


and the 4-quadrant multiplier is *not* the same as the arithmetic
multiplier i found in the ABM library, right?

What do you mean by arithmetic multiplier?

In my SuperSpice examples, I have PLL.sss, which is nothing more than a
multiplier block fed by an inbuilt vco. I don't see why PSpice should be
any different for its multiplier. I also have the example
PLLFrequencyMultyplier.sss, which uses an ex-or, and a d-type as a
divider. You might want to have a look at them as a starting point.

as far as simulating a circuit goes, the subtractor doesn't do the
same thing that pll phase detectors do.

I guess, you aint familiar with some common methods of analysing
plls.

not in spice. paper.. sure. not to mention the vendor programs
available. forget plls. i want to do some laplace math.

Oh...

plls are just
one use.

[snip]

forget plls for a sec. i was hoping to model the phase detector gain
without building one with XORs or anything like that. i was hoping
for a way to get a numerical value for the phase error and use it in
an expression. so if i wan't to simulate a Kp of say, .1 V/rad my
expression would be .1*rad

not doable?

Sort off. The average output voltage of a multiplier will be
proportional to cos(phase), not phase.

so,

B1 out gnd v=v(1)*V(2)

It also has the other garbage that needs LP filtered.

You could use some math to arccos() to get phase, but at the end of the
day, its pointless, as you cant/or don't really do this in any real
systems.

if i model:

Kp.Kv.Kn.Kf
G(s)H(s) = -----------
s

i'm thinking i can step the phase error and watch the response. maybe
even get a plot in the complex plane. yes i know i can just use a
parameter, but i thought i'd use a ref freq and a behavioral VCO.

hust add + v(added_phase) to the above.

Kevin Aylward
salesEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

 

[Kevin Aylward]

Jim Thompson wrote:

On Mon, 18 Aug 2003 15:37:29 GMT, Active8
mcolasono@earthlink.net.invalid> wrote:

[snip]
not in spice. paper.. sure. not to mention the vendor programs
available. forget plls. i want to do some laplace math. plls are just
one use.

[snip]

forget plls for a sec. i was hoping to model the phase detector gain
without building one with XORs or anything like that. i was hoping
for a way to get a numerical value for the phase error and use it in
an expression. so if i wan't to simulate a Kp of say, .1 V/rad my
expression would be .1*rad

not doable?

if i model:

Kp.Kv.Kn.Kf
G(s)H(s) = -----------
s

i'm thinking i can step the phase error and watch the response. maybe
even get a plot in the complex plane. yes i know i can just use a
parameter, but i thought i'd use a ref freq and a behavioral VCO.

thanks,
mike

[snip]

Look up ELAPLACE in the PSpice help.

I'd wager, that that was not the problem Jim.


Kevin Aylward
salesEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

 

[Active8]

Look up ELAPLACE in the PSpice help.

...Jim Thompson

BTDT. been using them for a while. the coilcraft laplace model of skin

resistance is one example. that uses a GLAPLACE.

thanks
mike

 

[Active8]

In article <ev12kvcnt1vtsmbiflvhkvnafkp3rsn0i0@4ax.com>, Jim-
T@analog_invalid.com says...

On Mon, 18 Aug 2003 17:52:06 +0100, "Kevin Aylward"
kevin@anasoft.co.uk> wrote:

Jim Thompson wrote:
On Mon, 18 Aug 2003 15:37:29 GMT, Active8
mcolasono@earthlink.net.invalid> wrote:

[snip]
not in spice. paper.. sure. not to mention the vendor programs
available. forget plls. i want to do some laplace math. plls are just
one use.

[snip]

forget plls for a sec. i was hoping to model the phase detector gain
without building one with XORs or anything like that. i was hoping
for a way to get a numerical value for the phase error and use it in
an expression. so if i wan't to simulate a Kp of say, .1 V/rad my
expression would be .1*rad

not doable?

if i model:

Kp.Kv.Kn.Kf
G(s)H(s) = -----------
s

i'm thinking i can step the phase error and watch the response. maybe
even get a plot in the complex plane. yes i know i can just use a
parameter, but i thought i'd use a ref freq and a behavioral VCO.

thanks,
mike

[snip]

Look up ELAPLACE in the PSpice help.


I'd wager, that that was not the problem Jim.


Kevin Aylward
[snip]

sorry kevin, i originally said i wanted to model Kp. no, i want the
phase error of the VCO freq and reference freq. my second post *was*
pretty clear.

The OP was unclear, but as the thread developed he said "step the
phase error...", so ELAPLACE is appropriate.

ok jim:

do elaborate, please. how do i use laplace to step the phase error?
sorry, my brain's not in gear to consider how straight forward the math
probably is. you don't mean unit step, do you? 1/s? no, you probably
mean laplace xfrm of d(phi)/dt.

i'd like to model the loop in Laplace, change the ref freq and watch the
response as the VCO input corrects the out of phase condition. or watch
the phase error accelerate in an open loop or condition.

Activ8 is probably not aware of all the tools that are *hidden* in
PSpice... the documentation sucks.

that's a fact jack, er jim ;-) for instance i just realized that that
EMULT part *is* acting as a 4-quad mult since it gives me a 2f sine. i
have 2 phase shifted 1MHz sines, the TRANS params of which are

SIN(0 2 1Meg 0 0 0)
SIN(0 2 1Meg 0 0 10)

problem here is that i don't see how to interpret that EMULT output as
phase shift in degrees or radians to use as a param. yeah, filter it. i
was hoping for another way. you'd think there would be a PSpice way to
just measure the error. but it would need history to do that.

I wonder from where Activ8 derived his moniker? Back in DOS days my
oldest son wrote an EXE by that name for me... it maintained revision
netlists when I did hand-drawn schematics and hand-typed netlists.

you could just ask me, jim activate. Active8. it's what you do to a
CATV amplifier. activation and balancing. turn it on and balance (set
the output level and equalize the freq response slopes.) i like the "8"
twist on the word.

thanks in advance and brs,
mike

...Jim Thompson

 

[Active8]

In article <kt62kvofg3hmc8p4u7v8qoct3hc34e483u@4ax.com>, Jim-
T@analog_invalid.com says...

On Mon, 18 Aug 2003 18:26:20 GMT, Active8
mcolasono@earthlink.net.invalid> wrote:

[snip]
ok jim:

do elaborate, please. how do i use laplace to step the phase error?
sorry, my brain's not in gear to consider how straight forward the math
probably is. you don't mean unit step, do you? 1/s? no, you probably
mean laplace xfrm of d(phi)/dt.

i'd like to model the loop in Laplace, change the ref freq and watch the
response as the VCO input corrects the out of phase condition. or watch
the phase error accelerate in an open loop or condition.


Activ8 is probably not aware of all the tools that are *hidden* in
PSpice... the documentation sucks.

that's a fact jack, er jim ;-) for instance i just realized that that
EMULT part *is* acting as a 4-quad mult since it gives me a 2f sine. i
have 2 phase shifted 1MHz sines, the TRANS params of which are

SIN(0 2 1Meg 0 0 0)
SIN(0 2 1Meg 0 0 10)

problem here is that i don't see how to interpret that EMULT output as
phase shift in degrees or radians to use as a param. yeah, filter it. i
was hoping for another way. you'd think there would be a PSpice way to
just measure the error. but it would need history to do that.


I wonder from where Activ8 derived his moniker? Back in DOS days my
oldest son wrote an EXE by that name for me... it maintained revision
netlists when I did hand-drawn schematics and hand-typed netlists.

you could just ask me, jim activate. Active8. it's what you do to a
CATV amplifier. activation and balancing. turn it on and balance (set
the output level and equalize the freq response slopes.) i like the "8"
twist on the word.

thanks in advance and brs,
mike


Make a Laplace representation of your PLL using the ELAPLACE blocks.

Apply a step of *voltage* at the reference phase input and observe
output.

Conversely you can apply a perturbation in the feedback loop.

...Jim Thompson

that was the plan, stan. i'll have to conclude that i can't get that

step from a PSpice ABM or other block or expression and i'll have to
actually model a *real* phase detector. oh well. thanks for your time,
all. the next PSpice ABM block question is easy if i can't figure it out
myself. friggin' documentation.

br,
mike

 

[Chaos Master]

AB wrote on the dust:

However, the program has a very limited library...strictly common
transistors, diodes and common IC's are included.
It seems like you're using the Student Version.

Throw the student version away and use a "decent" SPICE. Try LTSpice, or
SuperSpice.

Needless to say, it doesn't have a photodiode and forget trying to do
a switching power supply because the chips aren't available to use in
the simulation.
SuperSpice has a photodiode example, IIRC. LTSpice was designed around

power supply design.

What type of Spice should I get and how do I get all the different
models for devices that I might need???
Get LTSpice, it's very fast and reliable. SuperSpice is a good program

too.
For models, google for "spice models".
http://homepages.which.net/~paul.hills/Circuits/Spice/ModelIndex.html is
an 'index' of models. Manufacturers have models too.


--
E-mail address is fake. Please reply to the group!

 

[Active8]

[snip]

and the 4-quadrant multiplier is *not* the same as the arithmetic
multiplier i found in the ABM library, right?

What do you mean by arithmetic multiplier?

never mind. the output led me to believe it wasn't a 4-quad mult due to
crap input. i brain farted. a gander at the FFT would have shown me it
was right for the input.

In my SuperSpice examples, I have PLL.sss, which is nothing more than a
multiplier block fed by an inbuilt vco. I don't see why PSpice should be
any different for its multiplier. I also have the example
PLLFrequencyMultyplier.sss, which uses an ex-or, and a d-type as a
divider. You might want to have a look at them as a starting point.

i always check your examples before posting. i just didn't find what i

was looking for.

[snip]

ok. your info below makes sense to me. thanks. /// nothing follows
br,
mike

forget plls for a sec. i was hoping to model the phase detector gain
without building one with XORs or anything like that. i was hoping
for a way to get a numerical value for the phase error and use it in
an expression. so if i wan't to simulate a Kp of say, .1 V/rad my
expression would be .1*rad

not doable?


Sort off. The average output voltage of a multiplier will be
proportional to cos(phase), not phase.

so,

B1 out gnd v=v(1)*V(2)

It also has the other garbage that needs LP filtered.

You could use some math to arccos() to get phase, but at the end of the
day, its pointless, as you cant/or don't really do this in any real
systems.

if i model:

Kp.Kv.Kn.Kf
G(s)H(s) = -----------
s

i'm thinking i can step the phase error and watch the response. maybe
even get a plot in the complex plane. yes i know i can just use a
parameter, but i thought i'd use a ref freq and a behavioral VCO.

hust add + v(added_phase) to the above.

Kevin Aylward
salesEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

 

[Kevin Aylward]

Mathew Orman wrote:

The first commercial sample ever built of the FTL data transmission
line will be offered on Ebay auction.
20m long 10MBit/sec performs 10x FTL data transfer and completely
falsifies the Einstein-Lorentz space speed limit of c.
The sample will carry 200% money back guarantee of the FTL
performance.

Look, you f'ing scam artist fool. Look up "negative group delay" in
google, and actually learn something.

Kevin Aylward
salesEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

 

[AB]

On Mon, 18 Aug 2003 07:19:39 +0100, "Kevin Aylward"
<kevin@anasoft.co.uk> wrote:

AB wrote:
Hey all,

I started playing with Circuitmaker 6 months ago and love the Spice
modeling capability.

However, the program has a very limited library...strictly common
transistors, diodes and common IC's are included.


This must be the demo.

Yes, it's a demo. The schematic drawing function is limited to 50
components. The spice has noise analysis and won't do temperature
related analysis.

So, it's cripled, but not badly.

Needless to say, it doesn't have a photodiode and forget trying to do
a switching power supply because the chips aren't available to use in
the simulation.

So....I found this newsgroup and hoped for some answers by reading the
archives. However, there seems to be a bunch of types of Spice and I'm
confused.


Not really. Spice is a reasonably standard format.

Ok, the help file that came with it states that all devices have to be
created from the ground up and goes into details about words I've
never seen before. It's definately like they are talking some sort of
strange language to me.

Some messages in this newsgroup suggest that new components can be
added by simple drag and drop.

I had an elmer when I first downloaded Circuitmaker, he told me he had
NEVER been able to add a spice model to it, despite his vast knowledge
and others have told him the same thing.

What type of Spice should I get and how do I get all the different
models for devices that I might need???


Some spices comes with huge libraries, but in general, this is not such
a main issue. All component vendors produce models for most of their
parts. You simply go to their web sites. You can also modify existing
models.

Yes, I did this before writing this message. Most of the big names
have spice data. All of them specify PSpice and leave you hanging
unless you have PSpice.

I've worked in electronics since graduating from college (in 75), and
Spice seems awful complicated and there seems to be many different
types of Spice.

Suggestions anyone??

Well, I will obviously suggest SuperSpice, as I consider it the easiest
spice to use in the known universe. Install, load the demos, and press
the blue "R" button. Oh, there is a photo diode example circuit.

I hate to dump Circuitmaker, but I don't want to keep it if the Spice
thing represents a fatal flaw! If I can't model a Hamamatsu photodiode
or a Max 1725 power supply chip though, it becomes somewhat useless.

I'm not sure what 'affordable' means, but I'll have a look soon.

I thank you very much for the info.

Art

Kevin Aylward
salesEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

 

[AB]

On Tue, 19 Aug 2003 00:29:09 -0300, Chaos Master
<raw_chaos@brasnet.org> wrote:

AB wrote on the dust:
However, the program has a very limited library...strictly common
transistors, diodes and common IC's are included.
It seems like you're using the Student Version.
Throw the student version away and use a "decent" SPICE. Try LTSpice, or
SuperSpice.
Needless to say, it doesn't have a photodiode and forget trying to do
a switching power supply because the chips aren't available to use in
the simulation.
SuperSpice has a photodiode example, IIRC. LTSpice was designed around
power supply design.
What type of Spice should I get and how do I get all the different
models for devices that I might need???
Get LTSpice, it's very fast and reliable. SuperSpice is a good program
too.
For models, google for "spice models".
http://homepages.which.net/~paul.hills/Circuits/Spice/ModelIndex.html is
an 'index' of models. Manufacturers have models too.

Still not sure if LTSpice is limited to power supply design or whether
it will model other chips (Linear Tech only?) or not.

I'll look at it though and thanks for the info!

Art

 

[Animesh Maurya]

Chaos Master <raw_chaos@brasnet.org> wrote in message news:<MPG.19ab8dc04e3a2f8698974b@news.cis.dfn.de>...

AB wrote on the dust:
However, the program has a very limited library...strictly common
transistors, diodes and common IC's are included.
It seems like you're using the Student Version.
Throw the student version away and use a "decent" SPICE. Try LTSpice, or
SuperSpice.
Needless to say, it doesn't have a photodiode and forget trying to do
a switching power supply because the chips aren't available to use in
the simulation.
SuperSpice has a photodiode example, IIRC. LTSpice was designed around
power supply design.
What type of Spice should I get and how do I get all the different
models for devices that I might need???
Get LTSpice, it's very fast and reliable. SuperSpice is a good program
too.

Iam using Pspice for learning simulation and had not yet tried LTSpice
& SuperSpice for a single time. You said that LTSpice & SuperSpice is
more realible and fast, I don't really understand in which sence it is
realible ? Is Pspice no so realible in this comparision ? I need some
explanation, your suggestion will help to switch up if it really
worths.

Thanks

For models, google for "spice models".
http://homepages.which.net/~paul.hills/Circuits/Spice/ModelIndex.html is
an 'index' of models. Manufacturers have models too.

 

[John Dyson]

AB wrote:

Most reliable and its free from Linear Technology
and it's called LTspice or SwichCadIII.
See examples at : http://www.ultra-faster-than-light.com/ftlspeed.htm


Thanks Mathew,

Is this a power supply only Spice or does it do other components???
Are you limited to Linear Technology only type chips???

LTspice is a very useful general purpose SPICE. Not every feature

is obviously exposed, but it hasn't disappointed me (it disappoints
me less than some of the commericial spices.)

John

 

[Mathew Orman]

"AB" <artky1k@uninets.net> wrote in message
news:ii07kvoas3mml9cedmtp668su5akf5cup9@4ax.com...

Most reliable and its free from Linear Technology
and it's called LTspice or SwichCadIII.
See examples at : http://www.ultra-faster-than-light.com/ftlspeed.htm


Thanks Mathew,

Is this a power supply only Spice or does it do other components???
Are you limited to Linear Technology only type chips???

Thanks,

Art

No, you can simulate almost any type of circuitry!
Also it accepts PSPICE library components.
I has femto accuracy (fsec, famp, fvolt).
And you can zoom the waveforms to femto level.


Sincerely,

Mathew Orman
www.ultra-faster-than-light.com
www.radio-faster-than-light.com

 

[Mathew Orman]

NASA is already purchased one of my scam artist World's most advanced 6D
Laser Tracking System
US Patent No. 5,767,960.
Press released at: http://www.ascension-tech.com/news/press_032503.php

Sincerely,

Mathew Orman
www.ultra-faster-than-light.com
www.radio-faster-than-light.com




"Kevin Aylward" <kevin@anasoft.co.uk> wrote in message
news:5WD0b.152$lT.110@newsfep1-gui.server.ntli.net...

The usual assumptions.

 

[Chaos Master]

AB screamed:

Most reliable and its free from Linear Technology
and it's called LTspice or SwichCadIII.
See examples at : http://www.ultra-faster-than-light.com/ftlspeed.htm


Thanks Mathew,

Is this a power supply only Spice or does it do other components???
Are you limited to Linear Technology only type chips???
It does everything the other SPICE's do.

It isn't limited to LTC's components, if you add the model and create
the symbol for your favorite components, it's no problem.

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