2013 spicy swan_fb_pb_post_collection_27042013

Spicy SWAN PB FB post collection up to April 27th 2013
1
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Tot
al
Rea
ch?
Pai
d
Rea
ch?
Prom
otion
http://www.slideshare.net/PieroBelforte1/t
dr-measurement-of-rg58-coaxial-cable-s-
parameters-120413
2
6
--
Bo
ost
Pos
t
http://www.youtube.com/watch?v=wuHdc
Eot5Uk
3
8
--
Bo
ost
Pos
t
Hey Spicy fans! As part of our commitment
to continuous improvement, the interface
is being redesigned to be more user friendly
and intuitive .. watch for the next update
coming soon!
8
8
--
Bo
ost
Pos
t
Cisco Systems adopts Spicy SWAN for
simulation!
7
5
--
Bo
ost
Pos
t
New video by user request, making wires
and simulation with Spicy on ipad ..
http://youtu.be/Ka8qKTFGUb8 Note we
have a YouTube channel with many more
tutorial videos, linked from our website ...
online at: youtube.com/user/ischematics
7
5
--
Bo
ost
Pos
t
Played with Spicy today on a HUGE mac
monitor at best buy ... very cool ... the new
all-in-one touchscreen PCs with large
monitor offers new possibilities for Spicy
and for circuit design!
9
3
--
Bo
ost
Pos
t
Interworking of Ipad mini and Mac mini on
the previous circuit.
7
9
--
Bo
ost
Pos
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2
t
SWAN simulation of a Fault Insertion on a
10Gbps CML net using the new differential
probes of HiSAFE+ to be used by Cisco
Systems.
9
3
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Bo
ost
Pos
t
Spicy Schematics and Spicy SWAN v2.4.6
available now on web and for ipad on the
app store. Update today! Includes minor
bug fixes and new features including the
ability to now set the .OPTIONS line
properties in spice!
1
2
0
--
Bo
ost
Pos
t
https://www.ischematics.com/webspicy/re
port.py?RCODE=22668456634860647223a#
newwin
5
7
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Bo
ost
Pos
t
CML (Current Mode Logic) 10 Gbit/sec
microstrip interconnection: EYE
DIAGRAMS(2).
6
8
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Bo
ost
Pos
t
microstrip interconnection: EYE DIAGRAMS.
6
7
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Bo
ost
Pos
t
microstrip interconnection: SWAN results.
6
1
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Bo
ost
Pos
t
microstrip interconnection.
7
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Bo
ost
Pos
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A 200ps/div detailed view of previous plots.
7
0
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Bo
ost
Pos
t
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3
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Alexandre da Silva
about a week ago
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Robert Grange
about 2 weeks ago
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Gustavo Stein
about 2 weeks ago
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about 2 weeks ago
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Spicy Schematics -
ischematics.com
http://www.slidesha
re.net/PieroBelforte
1/tdr-measurement-
of-rg58-coaxial-
cable-s-parameters-
120413
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4

Shoji Iwasaki
about 2 weeks ago

Gabriel Keller
about a month ago
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Rodrigo Costa
about a month ago
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SPICY is fast, intuitive, and allows you to literally draw circuits with your fingers.
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4.
Spicy Schematics - ischematics.com shared a link.
17 hours ago
http://www.slideshare.net/PieroBelforte1/tdr-measurement-of-rg58-coaxial-cable-
s-parameters-120413
Tdr measurement of rg58 coaxial cable s parameters 120413

9
www.slideshare.net
A RG58 CU coaxial cable is characterized and modeled usinf SWAN/DWS techniques.
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26 people saw this post
5. Recent Posts by OthersSee All
o
Chadd Haller
i just bought it. ill let you know what i think in a day or 2
1 · April 14 at 8:32pm
o
Lou Rossi
Can someone point me to a tutorial for creating a part decal? I'd like to build a
library of vacuum tubes. Thanks.
10 · March 19 at 1:44am
o
Mussa Ba
Hi, I am looking to build circuit diagram solar panel control system to recharge
12V Battery. Do anyone know the good circuit diagram please ?
4 · February 10 at 2:45pm
o
Piero Belforte
TDIODE_SWAN
January 30 at 11:25pm
6. More Posts
7.

10
April 16
http://www.youtube.com/watch?v=wuHdcEot5Uk
RG58 coaxial cable behavioral model optmization using DWS
www.youtube.com
The optimization steps of the BTM (Behavioral Time Model) of a popular RG58
coaxial cable are shown. The starting point is a 10-cell BTM model extracted form...
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o Shoji Iwasaki likes this.
o
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8. LikesSee All
o
IEEE Spectrum
Magazine
o

11
IEEE
Local Business
o
IEEE
Non-Profit Organization
o
Oscium
Product/Service
o
ENGINEERING.com
Science Website
9.
April 5 via mobile
Hey Spicy fans! As part of our commitment to continuous improvement, the
interface is being redesigned to be more user friendly and intuitive .. watch for the
next update coming soon!
Like · · Share
o 2 people like this.
o

12
Boost Post
10.
March 27
Cisco Systems adopts Spicy SWAN for simulation!
12Like · · Share
Boost Post

13
11.
March 19
New video by user request, making wires and simulation with Spicy on ipad
.. http://youtu.be/Ka8qKTFGUb8
Note we have a YouTube channel with many more tutorial videos, linked from our
website ... online at: youtube.com/user/ischematics
Spicy Schematics - Wiring and Simulation on Ipad
youtu.be
Spicy Schematics - Wiring and simulation on ipad http://ischematics.com
https://www.facebook.com/SpicySchematics
http://groups.google.com/group/spicy-schemat...
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12.
March 17

14
Played with Spicy today on a HUGE mac monitor at best buy ... very cool ... the new
all-in-one touchscreen PCs with large monitor offers new possibilities for Spicy and
for circuit design!
12Like · · Share
Boost Post
13.
March 11
Interworking of Ipad mini and Mac mini on the previous circuit.

15
1Like · · Share
Boost Post
14.
March 10
SWAN simulation of a Fault Insertion on a 10Gbps CML net using the new
differential probes of HiSAFE+ to be used by Cisco Systems.

16
112Like · · Share
Boost Post
15.
March 10
Spicy Schematics and Spicy SWAN v2.4.6 available now on web and for ipad on the
app store. Update today! Includes minor bug fixes and new features including the
ability to now set the .OPTIONS line properties in spice!
Like · · Share

17
Boost Post
16.
March 8
https://www.ischematics.com/webspicy/report.py?RCODE=2266845663486064722
3a#newwin
Spicy Schematics Homepage
www.ischematics.com
Spicy Schematics - Electronic Circuit Schematic Capture for Tablet and Web - works
with iPad, Web - Homepage
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17.
March 8

18
CML (Current Mode Logic) 10 Gbit/sec microstrip interconnection: EYE
DIAGRAMS(2).
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Boost Post
18.
March 8
CML (Current Mode Logic) 10 Gbit/sec microstrip interconnection: EYE DIAGRAMS.

19
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Boost Post
19.
March 8
CML (Current Mode Logic) 10 Gbit/sec microstrip interconnection: SWAN results.

20
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20.
March 8
CML (Current Mode Logic) 10 Gbit/sec microstrip interconnection.

21
2Like · · Share
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21.
March 5
A 200ps/div detailed view of previous plots.

22
1Like · · Share
Boost Post
22.
March 5
Removing via holes ...SWAN mode sim results.

23
1Like · · Share
Boost Post
23.
March 5
Removing via holes effect on the previous 10Gbit/sec differential interconnects...

24
1Like · · Share
Boost Post
24.
March 5
....connecting a 10Gbit/sec Binary Pattern generator to the coupled traces including
via holes: SWAN sim results.

25
2Like · · Share
Boost Post
25.
March 5
And now...trying to see what happens connecting a 10Gbit/sec Binary Pattern
generator to the coupled traces including via holes.

26
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Boost Post
26.
March 5
Comparison between actual measures (Black) and SWAN sims of the previous TDR
setup. TDR: 7S12.

27
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27.
March 5
Sim results of the previous simulative setup.

28
1Like · · Share
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28.
March 5
SWAN simulative model of the full TDR setup related to coupled microstrips , via
holes and pads and TDR cable tip.

29
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29.
March 5
Detail of via and related pad connected to microstrip traces.

30
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30.
March 5
Detail of TDR semirigid cable tip connected to the microstrip.

31
1Like · · Share
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31.
March 4
SWAN sim results of S-params measure of previous coupled microstrip model.

32
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32.
March 4
Optimized SWAN micro-behavioral model of coupled microstrips.

33
3Like · · Share
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33.
March 4
Actual coupled microstrips on a FR4 substrate.

34
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34.
March 4
FYI, on Spicy for Web, you can now set some of the .OPTIONS line parameters for
spice simulations. Some circuits converge better with RSHUNT or GMIN specified
differently for example, and you can also choose the integration method of GEAR or
TRAP .. defaults are TRAP, RSHUNT off, and GMIN=1e-12 and you can select the
default as well. This is available now on Spicy for Web, and will be available on ipad
for the next release coming soon.
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35
35.
February 25
Results of previous SWAN TDR setup of a coupled pair of pcb traces (microstrips).
1Like · · Share
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36.

36
February 25
SWAN TDR setup to characterize a coupled pair of pcb traces (microstrips).
3Like · · Share
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37.
February 24
DIGITAL DIFFERENTIATOR RESPONSE to a SINE INPUT.

37
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38.
February 24
SWAN implementation of a simple DIGITAL DIFFERENTIATOR

38
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39.
February 23
New Video on our YouTube Channel, How to Make
Wires:http://youtu.be/7P5UMFph8Pk
New Wiring Method and New Probes - Spicy v2.4.5

39
youtu.be
Spicy Schematics - Group Select, Copy/Paste Example (no audio)
http://ischematics.com https://www.facebook.com/SpicySchematics
http://groups.google.com/group...
2Unlike · · Share
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40.
February 22
Ok, so with Spicy Schematics you have everything you need for circuit schematic
design and simulation with professional-grade spice, ... but what if you need to do
high speed digital simulations, with hundreds of RC networks? How about tra...See
More
ischematics.com
1Like · · Share

40
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41.
February 20
To learn the differences between SWAN and Spice, here the new link
: https://docs.google.com/file/d/0Bx-ZqV10CSiNTmxPM0RjTmZNSEE/edit
2013_SpicySWAN_CONCEPTS.pdf - Google Drive
docs.google.com
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42.
February 20
VOUT vs VIN CIRCULAR ORBITS of previous Digital Integrators.

41
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43.
February 20
Results of comparison between delayed VCCS and H(z) implementations of a digital
integrator,T=10ns SINE INPUT F=100KHz

42
1Like · · Share
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44.
February 20
Results of comparison between delayed VCCS and H(z) implementations of a digital
integrator,T=10ns SINE INPUT F=100KHz

43
1Like · · Share
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45.
February 20
Sampled digital domain (SWAN) : Comparison between delayed VCCS and H(z)
implementations of a digital integrator,T=10ns SINE INPUT F=100KHz

44
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46.
February 19
SWAN: unit step response of H(s) = 1/s (ideal integrator) transfer function.

45
1Like · · Share
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47.
February 19
Very nonlinear source example built from trig expressions in spice ... see example
page for more.
http://www.ischematics.com/example.html

46
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48.

47
February 19
Here the SWAN sim results of the previous FI setup.
3Like · · Share
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49.
February 19
A practical application of the BTM wire model: brute force fault insertion on a high-
speed clock interconnect (2Ghz).

48
1Like · · Share
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50.
February 19
SWAN sim results of the previous setup (reflected waves).

49
3Like · · Share
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51.
February 19
This SWAN setup compares the BTM model of the wire loop to an optimized (L+TL)
circuital model.

50
2Like · · Share
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52.
February 19
PWL fitting of CSA803 response of the 9cm wire loop.

51
31Like · · Share
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53.
February 19
One-port TDR (CSA803) characterization of a 9cm long AWG18 wire loop.

52
11Like · · Share
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54.
February 16
VOUT and power at capacitor C0 spectra of the WIEN oscillator are shown here.

53
11Like · · Share
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55.
February 16
Here you will find the sim report of WIEN
OSCILLATOR:https://www.ischematics.com/webspicy/report.py?RCODE=280082766
05001616111a#newwin
www.ischematics.com

54
1Like · · Share
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56.
February 16
Here a collage of SWAN sim results of the WIEN OSCILLATOR.
2Like · · Share

55
Boost Post
57.
February 16
A WIEN oscillator in SWAN mode.
1Like · · Share
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56
58.
February 14
Voltage waveform spectrum of the nonlinear LC oscillator.
112Like · · Share
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59.

57
February 14
V-I orbits related to previous nonlinear LC free-running oscillator.
11Like · · Share
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60.
February 14
SWAN mode simulated voltage waveform related to nonlinear LC oscillator.

58
11Like · · Share
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61.
February 14
Free running LC oscillator with NON LINEAR capacitor.

59
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62.
February 14
Response of previous RC circuit with nonlinear C.

60
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63.
February 14
SWAN model of a NONLINEAR CAPACITOR from its basic differential equation.

61
1Like · · Share
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64.
February 14
Sim results of previous system solver icluding XY trajectories.

62
2Like · · Share
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65.
February 14
Here the sim results: the unknowns X Y and Z are plotted versus time.

63
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66.
February 14
Another example of how SWAN can be used to solve a higher order system of
nonlinear differential equations.

64
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67.
February 12
Spicy SWAN Interworking between PC and Ipad Mini.

65
23Like · · Share
Boost Post
68.
February 10
Sim result of previous LORENZ ATTRACTOR computational blocks diagram as XY
trajectory

66
2Like · · Share
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69.
February 10
LORENZ ATTRACTOR implementation in SWAN mode.

67
4Like · · Share
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70.
February 10
fyi, we have two new libraries of examples in the Online Circuit Library within Spicy
.. There are buttons there to open them easily and you can download the circuits ..
note that this is available now on Spicy for web, but not yet in the ipad version, we
are waiting for Apple to approve the latest release

68
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71.
February 9
INTEGRATORS error (difference between opamp and ideal integrator) changing
opamp parameters.

69
11Like · · Share
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72.
February 9
Here the detailed view of the difference between the output voltages of the two
models.

70
11Like · · Share
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73.
February 9
Here the result plots of the INTEGRATORS circuit.

71
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74.
February 9
SWAN simulation and comparison of two INTEGRATOR models.

72
21Like · · Share
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75.
February 8
Here the digital mode plot of previous example.

73
1Like · · Share
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76.
February 8
A very simple 3-input AND circuit implemented using SWAN voltage
controlled switches with switching threshold of .5V

74
42Like · · Share
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77.
February 7
Here the chaotic V-I orbits related to RLDIODE CIRCUIT (SWAN mode,DWV plot)

75
61Like · · Share
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78.
February 7
Here the sim result comparison of previous RLDIODE circuit sims in SWAN vs Spice
modes.

76
1Like · · Share
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79.
February 7
A very simple RL DIODE circuit showing a CHAOTIC behavior

77
44Like · · Share
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80.
February 5
Plots of SWAN errors vs tstep values for the 50Mhz LC oscillator.

78
2Like · · Share
Boost Post
81.
February 5
This collage shows the comparison between Spice and SWAN modes when
simulating the previous free-running 50Mhz LC oscillator.

79
7Like · · Share
Boost Post
82.
Spicy Schematics - ischematics.com commented on a link.
February 5
Accuracy comparison between Spice mode and SWAN mode for a LC free running
oscillator (50Mhz) compared to a sin source (to be run in Spce and SWAN mode for
comaparison)https://www.ischematics.com/webspicy/report.py?RCODE=26441004
771723520648a#newwin.

80
Spicy Schematics
www.ischematics.com
with iPad, Web - Chat!
Like ·
83.
February 4
Here the frequency spectrum of the voltage of the 50Mhz oscillator (SWAN mode).

81
3Like · · Share
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84.
February 4
Here the SWAN mode report of he simplest LC 50Mhz free oscillator.
3a#newwin

82
www.ischematics.com
5Like · · Share
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85.
February 2
SWAN mode: frequency response of the previous CHAIN TEN 5th-ORDER LOW-PASS
CHEBYSHEV FILTERS ( wc = 10MEGRAD, fc = 1.59MHz ).

83
1Like · · Share
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86.
February 1
SWAN mode STEP RESPONSE OF A CHAIN of LOW-PASS TEN 5th-ORDER LOW-PASS
CHEBYSHEV FILTERS ( wc = 10MEGRAD, fc = 1.59MHz ). The filters transfer functions
are described by their poles in the S-PLANE.
6a#newwin

84
www.ischematics.com
1Like · · Share
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87.
February 1
Here you can find a SCREENSHOT GALLERY related to SWAN/DWS sims in several
fields of application, recently carried out by
Piero:https://picasaweb.google.com/118285010585894969594/DWSIMAGES#5729
896428676687522
DWS IMAGES
picasaweb.google.com

85
Photos by piero belforte, Mar 29, 2012 - Selection of DWS (Digital Wave Simulator)
Screenshots by Piero Belforte
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88.
February 1
Congratulations Spicy, we now hit 200 FB likes! Thanks everyone ... remember if you
like Spicy, please help by posting a good review on itunes .. it helps us support
development of the app .. we have only a handful of reviews and most of the time
from the few who wanted something else and were not happy ... but 200 FB likes
means maybe we can get 200 good reviews on itunes! That would help us out a lot
... just go to itunes, search ischematics.com, and you can review the free, or full or
now swan versions, which ever you like .. (or review all if you like) ... :)
2Like · · Share
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89.
January 29
The concept behind Spicy SWAN is that the user can choose between two fully
COMPLEMENTARY sim engines (Spice,DWS), like it happens for HYBRID ENGINE cars.
SWAN/DWS maps the circuit under analysis on an equivalent DIGITAL WAVE
NETWORK so th...See More

86
http://www.ischematics.com/images/2013_DWS_TIMELINE_270113.jpg
www.ischematics.com
1Like · · Share
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90.
January 28
SWAN/DWS: a 4-decade long high tech project.

87
3Like · · Share
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91.
January 28
SWAN/DWS story.
https://docs.google.com/file/d/0Bx-ZqV10CSiNaG5yaW1JWi1EWjQ/edit

88
2013_SWAN_DWS_STORY_270113_PB.pdf - Google Drive
docs.google.com
1Like · · Share
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92.
January 25
Leonardo da Vinci's version of Spicy SWAN (1510).

89
53Like · · Share
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93.
January 25
EFFECTS of TDR PULSE RISE TIME on RESPONSE.

90
131Like · · Share
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94.
January 24
Detailed view of TDR reflected wave related to ckt TDR_LINE_CAP_DISTR.

91
12Like · · Share
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95.
January 24
Here the results of previous circuit TDR_LINE_CAP_DISTR

92
112Like · · Share
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96.
January 24
Yet another example on how Spicy SWAN can be applied to the simulation of TDR
measures : a uniformely C loaded segment of Transmission Line.

93
11Like · · Share
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97.
January 24
INDUCTIVE discontinuity: TDR response.

94
31Like · · Share
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98.
January 23
SWAN sim of a TDR measure on a cable with capacitive discontinuity: results.

95
3Like · · Share
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99.
January 23
SWAN sim of a TDR measure on a cable with capacitive discontinuity.

96
22Like · · Share
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100.
January 22
TDR (Time Domain Refectometer) basics: measure on a 75 ohm ideal cable
(length=1m), simulated results (SWAN mode).

97
1Like · · Share
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101.
January 22
TDR (Time Domain Refectometer) basics: measure on a 75 ohm ideal cable
(length=1m).

98
11Like · · Share
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102.
January 20
Using DWS probes in SWAN mode: results.

99
11Like · · Share
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103.
January 20
Using DWS probes in SWAN mode.

100
4Like · · Share
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104.
January 19
Spicy SWANs take off.

101
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105.
January 19
Website re-do! Check out our new homepage look! This comes as Spicy version 2.4.2
is coming out soon, and Spicy SWAN on the way! Also note that our Spicy Circuit
Simulator iPhone utility has a whole new look ... Look out for the coming updates
with many new features!

102
37Unlike · · Share
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106.
January 17
Example of SWAN mode instantaneous power monitoring.

103
21Like · · Share
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107.
January 17
The schematic related to previous short circuits trials(SWAN).

104
151Like · · Share
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108.
January 17
SWAN mode simulated remake of short circuits trials carried out by Piero (CSELT,
1974) on logic drawers of the first Italian fully digital Telephone Exchange (Gruppi
Speciali) to increase their reliabilty
: https://www.ischematics.com/webspicy/report.py?RCODE=641262371631885870
58a#newwin

105
Spicy Circuit Schematics & Simulation Capture - Design Report © 2011,2012
iSchematics.com
www.ischematics.com
with iPad, Web - Design Report
1Like · · Share
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109.
January 11
SIMPLE FULL WAVE RECTIFIER WITH LC RIPPLE FILTER.

106
42Like · · Share
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110.
January 10
New feature on Spicy Web (coming soon to ipad) .. there are now two methods for
drawing wires .. if you have snap to pin ON (default) when you draw wires it will try
to snap to the nearest part pin if there is one nearby .. this is particul...See More

107
2Like · · Share
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111.
January 9
Spicy is looking good! We are enhancing the GUI, making wiring operation better
once again, and adding new features! .. live on Spicy Web soon, and out on ipad in
the next update

108
3Like · · Share
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112.
January 5
Jan 5, 2013 5:00am
new video on how to make wires using the new simpler method ... captions
available on youtube version

109
13Like · · Share
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113.
January 4
Spicy has updated our web version (ipad will follow soon) to have a new simple
method for making wires .. just click the wire button, then click and drag your wire ..
when you lift up its done ... it also will start at the nearest part pin automatically to
help you out! ... this is as it should have been done, and we know a few users have
asked for this, so try it out on the web today, and we will roll it out on ipad soon!
3Like · · Share
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114.

110
January 4
FYI, the next version of Spicy is packed with enhacements, including new SIMPLE
wiring procedure, and other enhancements! look for it soon on the app store and on
the web!
1Like · · Share
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115.
January 1
Happy New Year from Spicy! Here is a good laugh to start out the new year!
16Like · · Share
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111
116.
December 30, 2012
New SWAN ART image collection just created by Piero Belforte is available on You
Tube: http://www.youtube.com/watch?v=7LH4X0xeyhk
SWAN ART (2)
www.youtube.com
New collection of images created by Piero Belforte in 2012 from simulation of
electrical circuita using DWS/SWAN (Digital Wave Simulator/Simulation by Wave A...
1Like · · Share
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117.
December 22, 2012
Spicy updated to v2.4.1!
This version has enhanced plotting and reporting capabilities, a new author
information feature to add notes and information to each netlist, large plot area,
and minor bug fixes. Have a happy new year, and keep on simulating!

112
134Like · · Share
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118.
December 20, 2012
Here the schematic of the basic RLT cell modeling the skin effect for a 5mm long
RG58 coax cable.

113
21Like · · Share
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119.
December 20, 2012
FO (Free Oscillation) test for a 91.5m RG58 coax cable.

114
3Like · · Share
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120.
December 16, 2012
Examples!
1a
2a
2a
8a

115
iSchematics.com
www.ischematics.com
1Like · · Share
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121.
December 16, 2012
DOUBLE COMET STAR.

116
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122.
December 11, 2012
Connecting together 1000 LRT cells the model of a 50m long coax cable is obtained.
Here the V-I plots related to free oscillations of the cable are shown.

117
31Like · · Share
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123.
December 10, 2012
New Feature (Available in Spicy WEB, coming soon to Spicy for ipad): You can now
add notes to your schematics to include in the netlist .. Author, date, and a free
textarea ... whatever you type will be added to the netlist, and when you save the
schematic it saves with the file

118
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124.
December 10, 2012
Connecting together 10 5cm long cells corrisponding to 50cm long coax.

119
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125.
December 10, 2012
SKIN effect on a 5cm long coax cable (SWAN mode):

120
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126.
December 6, 2012
And here a more recent paper on V-I plots for comparative analysis of TL models
using SpicySWAN:https://docs.google.com/file/d/0Bx-
ZqV10CSiNYlZENzdfOEk4aEk/edit
2012_PB_VI Trajectory plots for Transmission Line models evaluation.pdf - Google
Drive

121
docs.google.com
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127.
December 6, 2012
Here you can find a paper on comparative analysis of Transmission Line models
using SpicySWAN:https://docs.google.com/file/d/0Bx-
ZqV10CSiNS1JwTnc1NVIyTWs/edit
2012_Trasmission Line approximation using LC cells_PB_DWS.pdf - Google Drive
docs.google.com
1Like · · Share
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128.
December 5, 2012
Spicy Tutorial Video #3
Spicy Tutorial Video #3

122
2Like · · Share
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129.
December 5, 2012
Spicy Tutorial Part 2
1Like · · Share
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123
130.
December 5, 2012
1Like · · Share
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131.
December 5, 2012
How to make wires video tutorial
How to make wires video tutorial

124
1Like · · Share
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132.
December 5, 2012
NEw Copy Paste Feature Video!
NEw Copy Paste Feature Video!
1Like · · Share
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125
133.
December 5, 2012
Spicy WEB Update: 12/4/12 you can now set your own part references, and there is
a new log plot available! Will be on next ipad release asap
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134.
December 4, 2012
Dec 4, 2012 12:19am
Another time trial of SpicySWAN vs MC10 for circuit 10_LC_CELL_TL in the window 0
- 5 microseconds with timestep of 1 picosecond (5 MILLION output samples)
2Like · · Share
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126
135.
December 2, 2012
Dec 2, 2012 10:42pm
This video shows an actual comparison between a commercial simulator (MC10) and
SpicySWAN during the simultaneous simulation of the same circuit 10_LC_TL. To get
similar accuracy levels, both sims are carried out the same time step of 10
femtoseconds on a time window of 0-50ns.
MC10 runs locally on a quad core I7 PC. SpicySWAN sim is carried out by
SWAN/DWS engine running on a SpicySWAN server in the Web.
5Like · · Share
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136.
November 30, 2012

127
If we try to simulate the 9,999 LC cell circuit with a 10 FEMTOSECOND time step ,
this is the comparison between TL model and LC model at line ends.
2Like · · Share
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137.

128
November 29, 2012
Here a detail of simulated waveforms at the end of the 9,999 cells chain after
97ns.In yellow the exact TL model, in green the sim at 100 femtosec time step, in
light blue the sim at 1 picosec time step
4Like · · Share
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138.
November 29, 2012
Here the results of the 9,999 cell LC circuit.

129
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139.
November 29, 2012
This report is related to a SWAN sim of a 9,999 cell LC chain with a time step of 100
Femtoseconds on a time window of 100ns.

130

131
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140.
November 29, 2012
If we try to simulate with a commercial Spice like LT Spice the previous IDEAL
lossless TLINE (50ohm,1ns) circuit stimulated by 500ps Voltage pulse, this is the
result we get:
2Like · · Share

132
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141.
November 28, 2012
In case of pulse input , the IV pattern of the exact SWAN model becomes a CROSS
instead of a RECTANGLE. The lumped models approach the cross shape increasing
the number of cascade cells as happens in the previous situation (Step input).
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133
142.
November 28, 2012
To test TL models a 500ps Voltage PULSE stimulus can be chosen in place of step
input previously shown.
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143.

134
November 27, 2012
These are the comparative IV trajectories related to different LC cell implementation
of the TL (50 ohm, 1ns).

135

136
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144.
November 27, 2012
LC cell using a Serial Adaptor stub model of the inductor equivalent to the
trapezoidal rule of integration.
4Like · · Share
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145.

137
November 27, 2012
Comparative images show the the I V trajectories related to circuit LC_CHAIN_TL
plotted with the same I and V scales. In yellow is highlighted the area that is
perfectly rectangular in the ideal case (SWAN model of TL). For the 10 LC-cell model
the waveform distortion increases increasing the time window of the analysis
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146.
November 26, 2012

138
Building up Subcircuits: (3 input LUT):
http://www.ischematics.com/webspicy/share/img30860584725056315123b.png
www.ischematics.com
1Like · · Share
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147.
November 26, 2012
Building up Subcircuits (4 input LUT):
www.ischematics.com

139
1Like · · Share
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148.
November 24, 2012
http://www.youtube.com/watch?v=x5Wms1S5lmc
SWAN ART
www.youtube.com
A gallery of artistic images coming from the transient simulation of actual electrical
circuits performed using the Digital Wave Simulator DWS.
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149.
November 24, 2012
Artistic version of a LC cell TL sim.

140
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150.
November 24, 2012
Here the brochure showing several applications of SWAN/DWS predecessors:
https://docs.google.com/file/d/0Bx-ZqV10CSiNMG9CMGEzdnZxVTQ/edit
1989_PB_SPRINT&SIGHTS_BROCHURE_FULL_web.pdf - Google Drive

141
docs.google.com
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151.
November 24, 2012
Here a reference to DWN methods applied for modeling & simulation of lossy
interconnections:
https://docs.google.com/file/d/0Bx-
ZqV10CSiNYTM3YjVjYmUtNTk1Yy00NzU3LTgyMzItMThmZmJhYTQ2NjYx/edit
1982_Simulation_lossy_interconnections_ISCAS_Rome.pdf - Google Drive
docs.google.com
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152.
November 24, 2012
Here a paper about the applications of early DWN simulators:

142
https://docs.google.com/file/d/0Bx-
ZqV10CSiNZTJhYmNmZTQtNjc4OS00ZjQyLThhZjMtOTNlOTdjYWZkNTM2/edit
1985_Electrical_Simulation_Using_Digital_Wave_Networks_IASTED_Symposium_
Paris_June1985.pdf - Google.
docs.google.com
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153.
November 24, 2012
Here a biblographic reference about the first simulation program based on DWN
algorithms. https://docs.google.com/file/d/0Bx-
ZqV10CSiNYzk0OTA5N2QtOWY2My00MmM0LTllNWItY2U0NzUzOTQ2OWVi/edit
1975_Use_of_equivalent_Wave_Digital_Networks..._1975.pdf - Google Drive
docs.google.com
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154.

143
November 24, 2012
a few people have asked for a 555 timer spice model .. we found a subcircuit version
online and posted it in the public models on the
homepage: http://www.ischematics.com/validModels.py?MODEL=UA555
You an use it like other subcircuits, just create a subcircuit part and name the nodes
in order and set the part value to UA555 .. fyi
Spicy Circuit Schematics & Simulation Capture Spice Model List © 2011,2012
iSchematics.com
www.ischematics.com
with iPad, Web - Upload your spice models
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155.
November 23, 2012
Spicy SWAN WEB & Ipad versions cooperate together.

144
42Like · · Share
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156.
November 23, 2012
XY plot of input current versus out voltage related to previous circuit LC_CELL_TL.
The time window is 10 -11 microseconds, sim tstep is 1 ps.

145
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157.
November 23, 2012
An eye diagram of previous signals at 125 Mbit/sec enhances the aberrations
affecting the lumped LC model of the TL.

146
1Like · · Share
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158.
November 23, 2012
A more detailed view (DWV mode) of voltages at the end of both TL models.

147
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159.
November 23, 2012
Here the comparative plot of the waveforms of the two TL models.

148
1Like · · Share
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160.
November 23, 2012
Here the SWAN netlist of the previous circuit:
******************************************
* Netlist and simulation file
* Generated by: SPICY Schematics (ischematics.com)
* File: LC_CHAIN_TL
...See More

149
ischematics.com
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161.
November 23, 2012
This simple circuit compares a lumped parameter LC model of a Transmission Line
with the native SWAN model of the TL.

150
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162.
November 22, 2012
A simulation tool based on both algorithms (Spice/SWAN) is the most powerful and
comprehensive solution available today on the market. Spicy SWAN is based on the
philosophy of HYBRID simulation engines (like happens in the automotive field for
car engines). Having a common data entry interface at SCHEMATIC level, the user
can select what is the best engine to be utilized for his circuit. There are even
situations where both engines can be utilized to get the result, as shown in some of
previously shown examples...
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151
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163.
November 22, 2012
For the previously explained reasons, Spice is well suited to deal with circuits
containing device models (.model cards) where propagation delay effects are
negligible. SWAN is well suited for circuits where propagation of signals cannot be
ignored as happens more and more due to increasing speed of modern electronic
systems..
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164.
November 22, 2012
Moreover DWN algorithms work at a FIXED TIME-STEP according to sampled system
theory and are NYQUIST criterion COMPLIANT while NA and related
Newton_Raphson iterative loops are based on VARIABLE TIME-STEP integration
methods and cannot be compliant to Nyquist criterion...
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165.

152
November 22, 2012
The strong differences between classical NA and WDN algorithms simulation of
electrical netwoks explaain the reason of their complemetary features. NA used in
Spice doesn't take into account SIGNAL PROPAGATION EFFECTS because assumes
that the circuit is dimensionless. On the contrary DWN starts assuming signal (wave)
propagation and the Trasmission Line (TL) is its basic circuit component....
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166.
November 22, 2012
Previous simple examples remark some of the differences between SWAN mode
versus Spice mode of operation. These differences are due to completely diffferent
approach to circuit simulation of the two tools. While Spice solves the network using
the well known three-centuries old NA (Nodal Analysis) method, SWAN simply maps
the network into a DSP (Digital Signal Processing) equivalent. This equival...See More
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167.
November 22, 2012
Here the multiplot result of the SWAN mode sim of the previous circuit 5RLCI_SW
opening the switch 5 microseconds after the start up (DWV plot mode).

153
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168.
November 22, 2012
A time-varyng network topology obtained abruptly disconnecting a portion of
previous 5RLCI circuit b means of a time-controlled switch (SWAN mode only) ...

154
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169.
November 22, 2012
An XY trajectory of two voltages of the previous circuit (5RLCI). VOUT2_2 vs VOUT2.

155
21Like · · Share
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170.
November 22, 2012
If the previous circuit is fed by a 100mA current step source this is its simulated
response in SWAN mode (Spice is not able to do this sim).

156
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171.
November 22, 2012
Here the DWV (Digital Wave Viewer) mode multiplot view of the result of previous
5RLC sim (5K points/waveform).

157
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172.
November 22, 2012
Here the results of the sim of previous circuit 5RLC in SWAN mode on a 10microsec
window, Sim tstep was set to 10ps for a total of 1MILLION out samples/waveform.
This sim runs on the server in about 200msec. Spice is not able to do the job.

158
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173.
November 22, 2012
A simple but tough circuit for Spice: A LC network fed by a step generator of
amplitude 1V.

159
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174.
November 21, 2012
A very simple lossless TL circuit where SWAN & Spice mode sims are compared in
the 200-300ns window. The differences are small due to smoothing effects of
multiple reflections on the capacitive load. Spice TL lumped model has only a small
smoothing effect in this case.

160
11Like · · Share
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175.
November 21, 2012
fun with new copy/paste: 4 stage inverting amp:
4a

161
iSchematics.com
www.ischematics.com
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176.
November 21, 2012
SWAN netlist related to the previous simulation:
******************************************
* File: WCSEQ_RC_CHAIN_REC
******************************************
.CHAIN 30*RC_LINE I:1; O:2
R0 20030 0 50
T0 3 0 10001 0 Z0=50 TD=1n
...See More
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162
177.
November 21, 2012
Simulation of the trasmission of a 10Mbit/sec binary signal over the 900-cell rc line
including a threshold receiver: eye diagrams at the input and output of the receiver.
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178.

163
November 21, 2012
Simulation of the trasmission of a 10Mbit/sec binary signal over the 900-cell rc line
including a threshold receiver.
1Unlike · · Share
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179.
November 21, 2012

164
This is the 10Mbit/seec eye-diagram of the signal at the end of the rc line resulting
from the SWAN sim of the previous experimental setup.
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180.
November 21, 2012
This is the SWAN mode circuit simulating the experimental setup where the worst-
case bit sequence generator is connected at the transmitter end of the line.

165
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181.
November 21, 2012
This is the binary sequence causing the maximum eye closure of the signal al end of
the RC line at 10Mbit/sec.

166
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182.
November 20, 2012
These are the Worst Case Eye Diagrams (WCEDs) at various bit rates showing the
eye diagram closure at the end of the 900-cell RC line.

167
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183.
November 20, 2012
Here a detail plot showing the rise edge of the signal at the end of the rc line (900
cells).

168
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184.
November 20, 2012
Here the screenshot of the Spicy SWAN plot (windows 500ns, sim tstep 10ps,
50Ksamples calculated, 5K plotted).

169
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185.
November 20, 2012
And this one is the related netlist as extracted by Spicy SWAN:
******************************************
* File: RC_LINE_CMP
...See More

170
ischematics.com
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186.
November 20, 2012
This is the TDR (Time Domain Reflectometer) simulation set up for a rc line
equivalent to 900 elementary cells (Rcell=.5 ohm, Ccell=1pF). Has been built up as a
chain of 30 behavioral blocks previously extarcted from a 30-cell line.

171
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187.
November 19, 2012 near Minneapolis, MN via mobile
15 stage ring oscillator using default cmos spice models for digital inverters
1a
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172
188.
November 18, 2012
New Feature: Copy/Paste/Move, Group Select
http://www.youtube.com/watch?v=9Ih2euzv4As
Available on Spicy Web, will rollout on iPad in next update!
www.youtube.com
http://ischematics.com https://www.facebook.com/SpicySchematics
http://groups.google.com/group...
1Like · · Share
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189.
November 17, 2012
This a recent real world application of BTM to 20Ghz probes characterized with the
TDR.

173
1Like · · Share
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190.
November 17, 2012
The previous technique has been applied for decades to state-of-the-art digital
system development with great success.
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174
191.
November 17, 2012
BTM models can be easily extracted from TDR measures of actual prototypes, and
SWAN models cane be easily built up for accurate simulations of complex circuitry
up to Multigigahertz frequencies.
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192.
November 17, 2012
The previously example shows how the BTM (BEHAVIORAL TME MODELLING)
technique can be applied to circuits. Spice can't support this very powerful
technique, due mainly to numerical stabilty issue of NA.
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193.
November 17, 2012
This is the SWAN netlist related to the previous circuit:
******************************************

175
* File: RC_LINE_CMP
...See More
ischematics.com
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194.
November 17, 2012
...and in this plot the responses of the 2 previous models are compared together.

176
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195.
November 17, 2012
Spicy SWAN schematic of the setup built up to compare the circuital model to the
behavioral model of the RC LINE. TDR is used to characterize both models.

177
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196.
November 17, 2012
Example of PWL breakpoints extraction from S21.

178
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197.
November 17, 2012
Here the simulated time domain Sparameters of the RC LINE. Due to symmetrical
and reciprocal circuit only 2 parameters are enough to describe full behavior.

179
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198.
November 17, 2012
This schematic shows a TDR set up to measure the 2-port S-parameters of the 30-
cell RC line in time domain.

180
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199.
November 17, 2012
File sync just got better .. the screenshot below shows the new interface .. instead of
always transferring all files, you can now upload/download one file at a time! The
manual sync option is still there so if you need to you can sync all...See More

181
2Unlike · · Share
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200.
November 17, 2012
Spicy Design Report example:
2a

182
iSchematics.com
www.ischematics.com
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201.
November 16, 2012
1Gbit/sec eye diagrams of 30-cell vs 20-cell RC_LINE at 1Gbit/sec.

183
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202.
November 16, 2012
30-cell vs 20-cell RC_LINE at 1Gbit/sec.

184
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203.
November 15, 2012
Other 10Gbps eye diagrams coming from the previous real design application
(SWAN).

185
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204.
November 15, 2012
This is another eye diagram display coming from a Piero recent design application :
10Gbps signals on a CML (Current Mode Logic) pcb net under Fault Insertion trials
(HiSAFE+ project, Cisco Systems)

186
1Like · · Share
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205.
November 15, 2012
...and here the eye diagrams at 1 Gigabit/sec related to previous circuit
PSEQ_RC_LINE.

187
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206.
November 15, 2012
Here the netlist of previous circuit:
******************************************
* File: PSEQ_RC_LINE
...See More

188
ischematics.com
1Like · · Share
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207.
November 15, 2012
Yet other unique capabities of SWAN mode: CHAIN of cells and BINARY sequences.

189
3Like · · Share
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208.
November 14, 2012
All this talk about Spicy SWAN, what is it? Spicy SWAN is a new Professional version
of Spicy with hybrid simulation engine that uses Spice, and SWAN simulators ...
What is SWAN? Our October Newsletter has a great introduction: http://ww...See
More

190
Spicy Schematics & Circuit Simulation - News © 2011,2012 iSchematics.com
www.ischematics.com
with iPad, Web - Spicy News
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209.
November 14, 2012
..,and what happens to the voltage in the node between the inductors?

191
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210.
November 14, 2012
...and this one is the SWAN mode netlist related to previous ckt FLUXCONSERV2
* File: FLUXCONSERV2
* by Piero Belforte
******************************************
L0 0 4 1m IC=1A
L1 5 0 1m

192
V0 4 6 DC(0)
...See More
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211.
November 14, 2012
Yet another very simple circuit showing the flux conservation of inductor's model in
SWAN mode.
1Like · · Share
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193
212.
November 14, 2012
And this one is the SWAN netlist of CHARGE_COSERV circuit generated by Spicy
SWAN
Netlist and simulation file
* File: CHARGECONSERV
* by Piero Belforte
******************************************
C0 3 0 1u IC=10V
C1 2 0 1u
C2 1 0 2u
...See More
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213.
November 14, 2012
This simple circuit shows how the capacitor's charge is conserved in SWAN mode.
This is a very important feature to guarantee the accuracy of the simulation.

194
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214.
November 13, 2012
Despite being born to model and simulate mainly propagation effects, DWN can
outperform NA even for concentrated parameters circuits. Here a simple LC resonat
circuit that is difficult to solve using Spice...

195
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215.
November 13, 2012
Another comparison Spice/SWAN for a very simple circuit with Transmission Lines.

196
53Like · · Share
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216.
November 13, 2012
Behind Spicy SWAN there is a long history of developments and successful
applications to state-of-the art projects.

197
2Like · · Share
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217.
November 11, 2012
Here you cab find a document I wrote about the TL approximations of Spice studied
using SWAN:https://docs.google.com/file/d/0Bx-ZqV10CSiNS1JwTnc1NVIyTWs/edit
2012_Trasmission Line approximation using LC cells_PB_DWS.pdf - Google Drive
docs.google.com

198
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218.
November 10, 2012
A multiplot of results of ckt TLRING2 (SWAN mode)
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199
219.
November 10, 2012
Another case where Spice is unable to do the job.
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220.

200
November 10, 2012
In this case, with an impedance Z0 of 300 ohm (or more), Spice is unable to run the
simulation (Gmin stepping error). SWAN mode can do the job without problems
(tstep 10femtoseconds).
11Like · · Share
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221.
November 10, 2012

201
Another comparison of SWAN mode vs Spice mode for a TL ring oscillator that Piero
has just built up.
1Like · · Share
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222.
November 10, 2012
In this collage the differences are clearly visible.

202
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223.
November 10, 2012
...and this one in SWAN mode.

203
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224.
November 10, 2012
This is the result in Spice mode.

204
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225.
November 10, 2012
This simple oscillator is made by Piero with a precharged Transmission Line shorted
at one end and left open at the other end. Can be simulated both is Spice mode and
SWAN mode using Spicy SWAN. Let's see the difference of the results.

205
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226.
November 10, 2012
Yet another XY plot of circuit coupl_osc .

206
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227.
November 10, 2012
Another view of the previous variables.

207
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228.
November 10, 2012
This is not an ECG.

208
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229.
November 9, 2012
And this is the first plot on the Spicy SWAN plt tab

209
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230.
November 9, 2012
SWAN netlist related to circuit coupl_osc:
******************************************
* File: coupl_osc
******************************************
C0 6 0 1n IC=1V
L0 6 0 1u

210
C1 4 0 .3333n IC=-1V
...See More
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231.
November 9, 2012
A new very simple circuit: Two LC oscillators fed by negative resistances tu sustain
the oscillations are coupled together by a non linear resistance.
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211
232.
November 9, 2012
A new very simple circuit: Two LC oscillators fed by negative resistances tu sustain
the oscillations are coupled together by a non linear resistance.
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233.

212
November 8, 2012
XY PLOTS OF CHUA7
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234.
November 8, 2012
CHUA7 (BUTTERFLY) SCHEMATIC

213
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235.
November 8, 2012
And this one is an artistic view of Piero related to circuit CHUA7.

214
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236.
November 8, 2012
An XY multiplot related to circuit CHUA7.

215
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237.
November 8, 2012
And this is the time-domain multiplot related to circuit CHUA7.

216
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238.
November 8, 2012
Another little variation on CHUA's theme.

217
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239.
November 8, 2012
Time domain behavior of CHUA5.

218
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240.
November 8, 2012
This is what happens with a small change of capacitor C0 params (value,IC). Ref.
Spicy SWAN circuit CHUA5. Report just posted.

219
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241.
November 7, 2012
A more complete set of XY trajectories related to the previous CHUA circuit.

220
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242.
November 7, 2012
CHUA3 circuit schematic built up using Spicy SWAN.

221
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243.
November 7, 2012
CHUA VI trajectories.

222
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244.
November 7, 2012
Using Spicy SWAN on Ipad2.

223
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245.
November 7, 2012
ROLLER COASTER from the Swan mode ckt just uploaded.

224
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246.
November 6, 2012
a user asked about spice models for vacuum tubes ... i remember another user
asked a few months ago as well .. although this is not our site and only something i
found from a google search, it may be useful for some looking to do amplifier circuit
simulations with vacuum
tubes:http://tdsl.duncanamps.com/dcigna/tubes/spice/index.html
Spice Models

225
tdsl.duncanamps.com
general model for the heater of indirectly heated
tubes5AR45U4GB5V3A5V4GA5Y3GT6DJ86SL7GT6SN7GTB12AT712AU712AX712BH7
A6L6GC6V6GTAKT-88GL211WE300B
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