Spicy Schematics Facebook Post Collection_Nov. 2012- Feb. 2015

1 Spicy Schematics Facebook Group Posts by Piero Belforte and Ed Pataky Nov. 2012-Feb 2015
Spicy Schematics - ischematics.com
Posted by Piero Belforte · Yesterday at 1:19pm ·
Analog and digital bandwith effect of vias.
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Posted by Piero Belforte · February 5 at 6:17pm ·
Worst-case eye diagrams for quick evaluation if the digital bandwidth
https://www.youtube.com/watch?v=Qw7j31KnPQc
COPLANAR MICROSTRIP WORST CASE EYE DIAGRAMS (Audio
captions)
This video shows how to simulate the response of a 612 millimiter long coplanar microstrip to a bit...
YOUTUBE.COM
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Spicy Schematics - ischematics.com added a new photo.
Posted by Piero Belforte · February 4 at 12:48pm ·
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Posted by Piero Belforte · January 31 at 12:54pm ·

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https://www.youtube.com/watch?v=ewvH_YasEGA&feature=youtu.be
MULTIGIGABIT TRANSMISSION OVER A COPLANAR
MICROSTRIP
This video shows how to utilize a unit-cell behavioral model extracted from a single one-port TDR
measurement of coplanar microstrip (see previous video in t...
YOUTUBE.COM
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New video explaining the effect of simulation setting on Transmission Line model accuracy:
https://www.youtube.com/watch?v=shiDiXNXh7E&feature=youtu.be
TRANSMISSION LINE MODELS EVALUATION
TEST OF SPICE AND DWS TRANSMISSION LINE MODELS. EFFECT OF SIMULATION TIME STEP
AND OPTION CHOICE ON ACCURACY.
YOUTUBE.COM
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WHY TO SPEND A LOT OF TIME AND MONEY TO THIS KIND OF THINGS?
https://www.youtube.com/watch?v=ETDKFnsU3v8
COPLANAR MICROSTRIP S-PARAMETERS : DWS vs SI900E
This video shows a simple, quick and inexpensive method to characterize and model a coplanar p.c.b.
microstrip up to 20Ghz. Only one port TDR measurement is ...
YOUTUBE.COM
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Posted by Piero Belforte · January 24 at 8:21pm · Edited ·

Comparison of 20Ghz S-parameters of a pcb coplanar microstrip between results coming from
SI9000E field solver and from a single TDR measurement on the actual coupon processed by
DWS. An accurate de-embedding of both setup and vias is performed by simulation to extract
the 4-cell pwl (6 breakpoints) behavioral model of the coplanar line alone. DWS Virtual VNA
postprocessing is applied to this model to get the frequency-domain S-parameters of the
microstrip.These S-parameters are compared to those coming from SI9000E filed solver. The
insertion loss from DWS is greater than SI9000E results beyond 4Ghz because the field solver
result doesn't include the 18.5 Ghz S21 dip coming from .the DWS model fitted to
measurement.
https://www.youtube.com/watch?v=KTWO7yQ7b3Y
COPLANAR MICROSTRIP S-PARAMETERS: SI9000E vs DWS
Comparison of 20Ghz S-parameters of a pcb coplanar microstrip obtained from SI9000E field solver
and from a single TDR measurement on the actual cpoupon proc...
YOUTUBE.COM
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Posted by Piero Belforte · January 23 at 11:23am ·
COPLANAR MICROSTRIP S-PARAMETERS: SI9000E VS DWS MODELS.

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https://www.youtube.com/watch?v=zgo3LI5Eevw&feature=youtu.be
TRANSMISSION LINE MODELS TEST: DWS VS MICROCAP11
Spicy SWAN TEST CIRCUIT TO EVALUATE TRASMISSION LINE MODELS. 1PS STEP RESPONSE,
OPEN LINE GENERATING PERSISTENT OSCILLATIONS A SINGLE 500PS...
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https://www.youtube.com/watch?v=FxoyXuoxcGk&feature=share
NONLINEAR LOSSLESS TRANSMISSION LINE STEP
RESPONSE: DWS VS MICROCAP11
10 TL-DIODE LOSSLESS NONLINEAR TRASISSION LINE 1PS STEP RESPONSE WITH OPEN...
YOUTUBE.COM
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https://plot.ly/~piero.belforte/1008
10 TL-DIODE CELLS LOSSY TRASM. LINE: 3D OSCILL.
PATTERN BY PIERO BELFORTE | scatter3d made by...
PLOT.LY
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10 TL-DIODE LOSSLESS NONLINEAR TRANSM. LINE: 3D
OSCILL. PATTERN (5V INPUT STEP) BY PIERO...
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https://www.youtube.com/watch?v=UI6BohOzCcI
NONLINEAR TRANSMISSION LINE STEP RESPONSE
PATTERNS 3
OSCILLATION PATTERNS OF A NONLINEAR TRANSMISSION LINE STEP RESPONSE....
YOUTUBE.COM
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https://www.youtube.com/watch?v=oKFEj9kQpfw&feature=youtu.be
SOLITON PROPAGATION ON A NONLINEAR TRASMISSION
LINE: LOSSLESS VS LOSSY COMPARISON
The effect of skin effect losses on soliton...
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https://www.youtube.com/playlist…
DWS (Digital Wave Simulator) APPLICATIONS
PIERO's VIDEOS RELATED TO DWS (Digital Wave Simulator) CIRCUIT SIMULATOR
APPLICATIONS. DWS IS AVAILABLE BOTH ON WEB (CHROME/SAFARI) AND MOBILE
APPLICATIONS...
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SOLITON PROPAGATION ON A 10 TRANSMISSION LINE-DIODE
CELLS, TSTEP=50FS, DWS VS MC11 BY P....
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SOLITON WAVE PROPAGATION ON A NONLINEAR TRASMISSION LINE
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Posted by Ed Pataky · January 13 at 6:34pm ·
latest spicy 3.0 video
http://youtu.be/iZrmoC5d4TM
Spicy Schematics / Spicy Swan 3.0 Tutorial

Spicy Schematics Tutorial video for Spicy Schematics version 3.0 To be released December 2014!
Modern Circuit Design for mobile and web. Intuitive, Powerful,...
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Revised version of DWS 8,5 User Manual (Spicy SWAN 3.0)
http://www.slideshare.net/PieroBelforte1/dws-85-user-manual
Dws 8.5 USER MANUAL
Copyright 1985-2015 Piero Belforte , Giancarlo Guaschino i DWS Digital Wave Simulator R E L E A S
E 8 . 5 USER'S MANUAL
SLIDESHARE.NET
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EARLIER IN 2015
HIGHLIGHTS
https://www.youtube.com/watch?v=pYPonOvAE1k
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https://www.youtube.com/watch?v=O3JJx2rFwIk&feature=youtu.be
LOSSLESS VS LOSSY TL OSCILLATORS
THIS VIDEO SHOWS HOW DWS (Spicy SWAN) SIMULATES IN A SIMPLE AND FAST WAY THE
LOSSES OF A TRANSMISSION LINE.
YOUTUBE.COM
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The beauty of losses...
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3D FREE OSCILLATIONS PATTERN : https://plot.ly/~piero.belforte/851
50OHM 500PS TRANSMISSION LINE FREE OSCILLATIONS (0-
500NS) : LOSSLESS VS LOSSY (BTM,S21 RAMP...
PLOT.LY
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Posted by Piero Belforte · January 9 at 4:48pm · Edited ·
HOW DWS IS ABLE TO MODEL LINE LOSSES IN THE SIMPLEST AND FASTEST
WAY:
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https://www.youtube.com/watch?v=9qdr0VhKJtQ&feature=youtu.be

RLDIODE CHAOTIC CIRCUIT: MICROCAP11 VS DWS (Spicy
SWAN) SIMULATION
SIMULATION OF A RL-DIODE CHAOTIC CIRCUIT: DWS VS MICROCAP11 AT 100PS TSTEP ON
A...
YOUTUBE.COM
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SIMULATION OF A RL-DIODE CHAOTIC CIRCUIT: DWS VS MICROCAP11 AT 100PS
TSTEP ON A 500US WINDOW (5 MEGASAMPLES)
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Posted by Piero Belforte · January 6 ·

One of the simplest chaotic circuits: the RL DIODE simulated here using Spicy SWAN 3.0
comparing two inductance models:
https://lnkd.in/dQScq5A
Spicy Schematics Homepage
Spicy Schematics - Electronic Circuit Schematic Capture for Tablet and Web - works with iPad, Web -
Homepage
ISCHEMATICS.COM|BY 2011-2013 ISCHEMATICS.COM - E. PATAKY
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Posted by Piero Belforte · January 4 · Edited ·
Speed comparison between Microcap 11 and Spicy SWAN (SWAN/DWS mode) to simulate a
circuit with 10 LC cells connected to Transmission Line stub in the middle. The simulation
windows is 100ns to get the initial response to an ideal step. A simulation time step of 100
Femtoseconds (1 MEGAsamples calculated) is chosen for both simulators to get comparable
accuracy.
The DWS speedup ratio resulted to be about 120 (running the two simulators on the same
machine).This is more ...
See More
MICROCAP11 VS DWS
Speed comparison between Microcap 11 and Spicy SWAN (SWAN/DWS mode) to simulate a circuit
with 10 LC cells connected to Transmission Line stub in the middle....
YOUTUBE.COM

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2014
HIGHLIGHTS
Posted by Piero Belforte · December 29, 2014 ·
Here a collection of collages related to my latest applications of DWS using Spicy SWAN 3.0
https://plus.google.com/…/118285…/albums/6098194293001958385
piero belforte's photos on Google+
DWS_COLLAGES_BY_PIERO_BELFORTE (55 photos)
PLUS.GOOGLE.COM
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Using Spicy SWAN 3.0...

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http://www.slideshare.net/…/we-were-pioneersearly-applicati…
We were pioneers: early applications of dwn simulations_2
The early applications (1970s) of a revolutionary electrical circuit simulation method (DWN) are
presented including device modelling and signal integrity...
SLIDESHARE.NET
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40 years ago, the project DWS (DIGITAL WAVE SIMULATION) starts up at the CSELT labs
(Turin, Italy)...
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Posted by Ed Pataky · December 15, 2014 ·
Spicy 3.0 on the web is finally here! A totally new interface, many bug fixes, and many new
features! ... check out our homepage athttps://www.ischematics.com/ and view the DEMO ...
we will be rolling out on ipad as well soon so look out for the update. The first tutorial video is
ready on our YouTube channel, and there will be more to come with more advanced operations
and a Spicy SWAN specific tutorial coming soon as well.

Homepage
ISCHEMATICS.COM|BY 2011-2015 ISCHEMATICS LLC
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Organic
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Paid
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https://www.linkedin.com/groups…
World's Largest Professional Network | LinkedIn
300 million+ members | Manage your professional identity. Build and engage with your professional
network. Access knowledge, insights and opportunities.
LINKEDIN.COM
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How SWAN/DWS processing virtualizes an old instrument and turns it in a modern high-tech
tool.
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Posted by Piero Belforte · November 30, 2014 ·
100Mbps simulated eye diagrams related to 10m and 50m connections using the measured
RG174 cable. 31-bit PRBS signal inputs.
https://www.ischematics.com/webspicy/report.py…

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Attenuation vs frequency profile of a 10m long Rg174 coaxial cable obtained from the
screenshot of s one-port measurement with a vintage 7S12 TDR processed by DWS (see
previous post). It is compared with two manufacturers data. http://lnkd.in/drUyWAn
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Low budget 10Ghz modeling of SMD components: using a smartphone to share with Spicy
SWAN the reflected wave captured by a vintage 7S12 Tek
TDR. http://w140.com/tekwiki/wiki/7S12
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COMPARISON OF OPTIMIZED DWS MODELS OF A RG58CU COAXIAL CABLE
(TASKER) TO ACTUAL TDR MEASUREMENTS

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MAKE THIS KIND OF DEVICE CHARACTERIZATION WITH A VERY LOW BUDGET!
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Posted by Ed Pataky · November 13, 2014 ·
We have been mentioning Spicy 3.0 for some time .. but now its really just around the corner!
watch for updates coming soon .. we will roll out this new version on web first then on ipad
shortly after

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This collage shows how to quickly get 20Ghz models of SMD components like a 560fF
capacitor using a TDR and SWAN/DWS for fixture de-embedding and model extraction.
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Another important historical presentation of DWS (former SPRINT) applications to predictive
EMC and related experimental tests:
http://www.slideshare.net/…/predictive-and-experimental-har…
Predictive And Experimental Hardware Robustness Evaluation Hp
Seminar…
Predictive and experimental results of the This environmente are presented (1997)
SLIDESHARE.NET

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Posted by Piero Belforte · November 6, 2014 · Edited ·
An historical flyer showing an important industrial application of DWS (former Sprint)
: http://www.slideshare.net/pierobel…/thris-flyer-1996-3174479
Thris Flyer 1996
Piero Belforte THRIS flyer 1996 1
SLIDESHARE.NET
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Spicy SWAN schematic (computational blocks) related to the Lorenz attractor.

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3D LORENZ ATTRACTOR simulated using SWAN/DWS:http://lnkd.in/dq5M-sY

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Posted by Piero Belforte · October 30, 2014 ·
4.5X6.3" PIERO PCB POWER PLANE: ROGUE WAVE GENERATION, CURRENT DRIVE
AND SHORT TERM. AT CORNERS DWS SIMULATION, 3D TVI OSCILLATION
PATTERN

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3D VIT OSCILLATION PATTERN RELATED TO A PCB POWER PLANE
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ONLINE INTERACTIVE DWS GRAPHS MADE BY Piero
Belforte:https://plot.ly/~piero.belforte
Plotly
Update the data in your graphs in real-time, without refreshing your browser. Streaming is built for
plotting real-time instrumentation, animations, and simulations. Use a unique stream-token for each
data-stream.
PLOT.LY
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Posted by Piero Belforte · July 21, 2014 ·
VC BUCK CONVERTER: STABILITY TEST by SWAN SIMULATION (2)

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VC BUCK CONVERTER, VIN 27V; STABILTY TEST, 500MA 20ms
CURRENT PULSE | scatter3d made by...
Piero.belforte's interactive graph and data of "VC...
PLOT.LY
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VC BUCK CONVERTER: STABILTY TEST
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https://plot.ly/~piero.b…/…/buck-converter-chaotic-behavior/
BUCK CONVERTER CHAOTIC BEHAVIOR | scatter3d made by
Piero.belforte | plotly
Piero.belforte's interactive graph and data of "BUCK CONVERTER CHAOTIC BEHAVIOR" is a...
PLOT.LY
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https://plot.ly/…/buck-converter-chaotic-orbits-of-vload-v…/
BUCK CONVERTER: CHAOTIC ORBITS OF VLOAD vs
INDUCTOR CURRENT DUE TO LOAD VARIATION (DWS) |...
Piero.belforte's interactive graph and data of...
PLOT.LY
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BUCK CONVERTER CHAOTIC ORBITS
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Posted by Ed Pataky · July 15, 2014 ·
Simple capacitance multiplier circuit to reduce power line ripple simulated in
Spicy https://www.ischematics.com/webspicy/report.py…
Homepage
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PCB plane inductance extraction setup.
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After 20+ years, still state of the art:
http://www.hparchive.com/…/1993_High-Performance_Environmen…
www.hparchive.com
HPARCHIVE.COM
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https://plot.ly/…/160x114x16mm-pcb-pp-inductance-measureme…/
160X114X1.6mm PCB PP: INDUCTANCE MEASUREMENT (DWS
SIMULATION) AT 1MHz, 1A Peak CURRENT...
Piero.belforte's interactive graph and data of...
PLOT.LY
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Posted by Piero Belforte · June 15, 2014 ·
https://plot.ly/…/emulated-vna-dws-0-10ghz-phase-of-two-pc…/
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Posted by Piero Belforte · June 13, 2014 ·
CSELT, early '70s: TDR-based automated data acquisition system

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Posted by Piero Belforte · May 15, 2014 ·
Early '70s: CSELT, TDR characterization and automatic model extraction of an ECL IC. These
models included a transmission line for the package, and were utlized by ETA (Easy Transient
Analysis) Digital Wave simulator to optimize the high-speed interconnects of the early digital
switching exchanges deployed in the Italian Telecom network.

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Posted by Piero Belforte · May 7, 2014 · Edited ·
CSELT Labs, year 1975: 0.5 Ghz multi-chip logic module designed by simulation in CSELT
using a first generation Digital Wave simulator (ETA: Easy Transient Analysis, see previous
post).
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Posted by Piero Belforte · May 2, 2014 · Edited ·
About 40 years ago (1975) at CSELT Labs, Turin, Switching Techniques Dept.: design by
simulation of a 0.5 Gbps logic multi-chip module using a first-generation DIGITAL WAVE
simulator running on a Hp9821 desktop computer.

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Posted by Piero Belforte · April 25, 2014 ·
Spicy SWAN emulation of actual swept frequency measurements on the power distribution
plane of the 4.5" X 6.3" p.c.b.
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4.5"X6.3" (114X160mm) p.c.b : Steady state capacitance at 10Mhz is independent from power
supply bonding scheme.
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Virtual measurement of both LF inductance and capacitance of the power distribution plane of a
pcb.

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This collage shows how the low-frequency inductance of a PCB power plane depends on
bonding scheme. This simulation runs in few seconds on Spicy SWAN on a time window of
2us.
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SUN
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FOP (Free Oscillation Patterns) related to a P.C.B.
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Vintage equipment can be still good for modeling PI issues in Spicy SWAN!

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https://www.linkedin.com/nhome/updates…
Join LinkedIn | LinkedIn
LinkedIn strengthens and extends your existing network of trusted contacts. LinkedIn is a networking
tool that helps you discover inside connections to recommended job candidates, industry experts and
business partners.
LINKEDIN.COM
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Easter Egg.
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Complex SI/PI structures can be simulated in seconds using DWS in Spicy SWAN.Here the
measure and the simulation are practically indistinguishable at an equivalent bandwith of
20Ghz.

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Posted by Piero Belforte · April 3, 2014 · Edited ·
A wide range of modeling methods for multigigabit applications are avaiilable in SWAN mode.
The sims run in seconds while expensive tools require tens of minutes!
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Free Oscillation (FO) PATTERNS related to 3 different models of the RG58 coaxial cable
(1.83m).

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1.83m RG58 coax cable at 40 Gbps: Comparative benchmark between DWS and CST Cable
Studio 2014.
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February 14, 2014 · San Francisco, CA, United States ·
A user asked for help on a circuit .. this is the result .. this is a good example of how to use
subcircuits, and the power of Spicy.
OK, here is how you do it:
The basic idea is, we make a circuit, we get the netlist, and we make a subcircuit out of that ...
...Continue Reading
Screenshot
Captured with Lightshot
PRNTSCR.COM
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February 7, 2014 ·
http://www.youtube.com/watch?v=btmrIN62iDc

TDR PERFORMANCE EVALUATION USING WORST CASE EYE
DIAGRAMS (WCEDs): 7S12
True performance of a TDR (Time Domain...
YOUTUBE.COM
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February 7, 2014 ·
http://www.slideshare.net/…/rg58-s-par-theory-cstspicedwsfi…
Rg58 s par theory cst_spice_dws_final
Comparison of time-domain Sparameters of RG58 cable computed by: Theory, CST, SPICE, DWS S.
Caniggia, P. Belforte February 04, 2014 1
SLIDESHARE.NET
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2013
HIGHLIGHTS
December 28, 2013 · Edited ·
SWAN EGG

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December 28, 2013 ·
Happy New Year with the GOLDEN EGG!
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http://www.slideshare.net/…/2013-pb-rg58-coax-cable-models-…

2013 pb rg58 coax cable models and measurements
Copyright Piero Belforte Dec 24th 2013 RG58 coaxial cable: A comparison among Analytical models,
DWS BTM models, TDR measures and CST 2013 Cable Studio simulati
SLIDESHARE.NET
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http://www.slideshare.net/…/1993-new-modellingsimulationenv…
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Very intersing discussion on fast 2D PI (Power Integrity) simulation of pcbs and Integrated
Circuits.
http://www.linkedin.com/…/Can-ROGUE-Waves-reality-in-464068…
Can ROGUE Waves, a reality in oceans and optics, exist in power
delivery networks?

"In 2010, more than 25 years after the initial work of Peregrine, researchers took advantage of the...
LINKEDIN.COM
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November 28, 2013 ·
VI trajectories of a Colpitts oscillator including p.c.b. traces by SWAN/DWS.
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Happy Thanksgiving!
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November 9, 2013 ·
Here the output spectra at 1Khz for 10mV and 100mV inputs.

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November 9, 2013 ·
Harmonics content of the output signal of the TUBE SCREAMER with a 20mVpp 1Khz input.
(SWAN mode).
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November 9, 2013 ·
TUBE SCREAMER: 10mv & 100mv inputs frequency sweeps (1Hz-20Khz/200ms)
500KSamples , 10 & 5 ns tsteps (SWAN mode).
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November 9, 2013 ·
TUBE SCREAMER: SWAN vs Spice modes.

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November 9, 2013 ·
Here the SWAN mode result for a 20mVpp 1Khz input.
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November 9, 2013 ·
Another vintage audio circuit: the TUBE SCREAMER for electric guitars.
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November 8, 2013 ·
SWAN/DWS modeling of the 12AX7 Triode from data sheets.

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November 6, 2013 ·
Despite the very low oscillation frequency (about 200Hz) and slow edges 20-30us, the
functioning is affected by wiring, especially by power & ground connections (PI: Power
Integrity) .
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November 6, 2013 ·
Model of spaghetti wiring of the triode multivibrator.
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Spicy Schematics - ischematics.com shared theirphoto.
November 6, 2013 ·
Simple triode (12AX7) multivibrator. (SWAN MODE).
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November 6, 2013 ·
12AX7 Multivibrator results.
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November 6, 2013 ·
Intermodulation products (distortion) at 1KHz multiples are clearly visible in this spectrum.
Two generators (2Khz and 3Khz, 1Vpp each) in series, are connected to amplifier input.
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November 6, 2013 · Edited ·
·
Simple triode (12AX7) multivibrator. (SWAN MODE).
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November 6, 2013 ·
Output spectrum of the 12AX7 audio amplifier: 2Vpp , 5Khz input signal.
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November 5, 2013 ·
Frequency sweep test of a TRIODE audio amplifier (SWAN MODE): result (100Hz-20KHz).
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November 5, 2013 ·
Frequency sweep test of a TRIODE audio amplifier (SWAN MODE).
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November 2, 2013 ·
Detail of the last millisecond (10Khz).
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November 2, 2013 ·
Startup transient of previous 12AX7 triode amplifier (10Khz).
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November 2, 2013 · Edited ·
Back to the future: a simple VACUUM TUBE audio amplifier (SWAN mode).
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October 18, 2013 ·
OpAMP Phase Shift oscillator using Spicy 3.0
See the ful design report here:

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October 15, 2013 ·
Giving up pcb trace and gnd/supply wire bonds, after startup the oscillator out behaves like a
sinusoid (no more chaotic effects). Here the spectrum of output voltage after startup (SWAN
mode).
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October 15, 2013 ·
Here the spectrum (DWV) of the oscillator's output (Emitter).
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October 15, 2013 ·
Here the schematic of previous circuit.
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October 15, 2013 ·
Here the complete picture, trajectories of SMD transistor pins (C,B,E, outside the package)
versus the collector current.
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October 15, 2013 ·
Adding VCC wire bond (9cm AWG18, BTM model) to previous COLPITTS oscillator:
collector voltage vs collector current trajectory after startup (5us to 10us).
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October 15, 2013 ·
Colpitts oscillator: chaotic startup discovered using SWAN mode in Spicy SWAN 3.0.
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October 4, 2013 ·
DWV multiplot of sim results related to previous circuit
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October 4, 2013 ·
Here a relay control application (Spicy SWAN 3.0) using self supply contact for latching
operation. 2s delayed relay contacts (NO and NC) connected to resistive load.
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October 3, 2013 ·
Using the CONVERT feature of Spicy SWAN 3.0 it is very easy to get a new part
implementing the previous relay. This new part can be tested in this simple circuit.
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October 3, 2013 ·
Here the SWAN model of an industrial relay (contactor).
26 people reached
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October 2, 2013 ·
Spicy SWAN 3.0 simulated waveforms after startup time (about 100us in this case)
28 people reached
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October 2, 2013 ·
Adding printed circuit board layout effects. The average trace length is supposed 2cm
(TD=100ps) with 100 ohm impedance.
25 people reached
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October 2, 2013 ·
DWV spectrum of V(IN_P) waveform at 100114 input over the time window 4us-5us.
25 people reached
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October 2, 2013 ·
Zoomed view of previous plot.
30 people reached
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October 2, 2013 ·
Overtone (third harmonic) quartz oscillator using an ECL differential line receiver.
24 people reached
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Like · · Share
October 1, 2013 ·
Good example by user request of Spicy 3.0 capabilities .. The user wanted a schmitt trigger ... i
found a pdf online with a simple CMOS implementation .. here is that
paper:http://web.mit.edu/Magic/Public/papers/00260219.pdf
now i made the circuit in Spicy:
http://www.ischematics.com/…/s…/img27543021772480038737b.png
...See More
35 people reached
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September 30, 2013 ·
Previous simulations are an example of outstanding capabilties of Spicy SWAN version 3.0 for
modeling and simulation of digital circuits including logic/timing/signal integrity/power
integrity issues.
These capabilties cannot be found in other NA based simulation tools on the market today.
100 people reached
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DWV multiplot view of metastable outputs observed at 333 Mhz.
27 people reached
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These are the waveforms at 286Mhz clock frequency.
22 people reached
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Sim (SWAN mode) results of previous circuit.

22 people reached
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%00 Mhz Clock and Data signals at PRBS generator pins (outside) are shown here as eye
diagrams.
24 people reached
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An improved version of previous circuit including a complete model of the ECL 2047.bit PRBS
generator and p.c.b. interconnections modeled as TLs. The model of the PRBS generator was
automatically generated from previous schematic.

23 people reached
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Multiplot dispaly of previous sim results: 50K samples have been calculated for a circuit
containg about 500 elements (about half are controlled switches). The SWAN sim requies about
3 sec.
30 people reached
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Shown here the plot (Digital mode) of the waveforms related to previous circuit.

20 people reached
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Here an example on how a SR D-type Flip Flop can be easily built up using Spicy SWAN
standard logic gates (SWAN mode).
23 people reached
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August 16, 2013 ·

Simultaneous bidirectional trasmission of asynchronous digital streams (1Gbps and 1.754
Gbps) over an actual coaxial cable (RG58, 3.66m): actual receivers with X10 gain in the active
region (200mV-300mV).
43 people reached
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August 14, 2013 ·
Simultaneous bidirectional trasmission of 1 and 2 Gbps digital streams over an acual coaxial
cable (RG58, 3.66m): results
79 people reached
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August 12, 2013 ·
Spicy 3.0 is coming!

We have been working hard to provide a new interface that is easier to use ... we have added
new features and enhancements, like a combined 2-axis current and voltage plot so you can see
all your signals on one screen, and faster operation with less memory usage ..
Look for this update coming soon!
...See More
ISCHEMATICS.COM
62 people reached
Boost Post
July 26, 2013 ·
100-cell nonlinear trasmission line in an amplified loop configuration: persistent pulse train
generation after startup-
41 people reached

Boost Post
July 26, 2013 ·
100-cell nonlinear trasmission line in an amplified loop configuration: startup voltage
waveforms.
34 people reached
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July 25, 2013 ·
Triangular pulse propagation on an elementary non-linear transmission line: voltage waveforms
along the line.
24 people reached
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July 25, 2013 ·
Triangular pulse propagation on an elementary non-linear transmission line.
26 people reached
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July 24, 2013 ·
A balanced current-driven backplane structure was utilized in 1987 to implement a high-speed
bus for HDTV digital signal distribution:https://docs.google.com/viewer…
Google Drive Viewer
DOCS.GOOGLE.COM
30 people reached
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July 24, 2013 ·
Worst Case Eye Diagrams (WCEDs) contours at Receiver #1 for current-driven backplane bus.
Total current edge risetime (erfc) = 6ns.

40 people reached
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July 23, 2013 ·
Current-driven backplane bus: voltage waveforms (200 Mbps)
26 people reached
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July 19, 2013 ·
Here the report: https://www.ischematics.com/webspicy/report.py…

Homepage
34 people reached
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July 19, 2013 ·
ECL Backplane bus eye diagrams at 250 Mbit/sec: detail.
41 people reached
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July 18, 2013 ·

Power Integrity (PI) simulation on the previous bus operating at 250 Mbit/sec: sim results
(voltages).
31 people reached
Boost Post
June 9, 2013 ·
Historical brochure of SPRINT & SIGHTS (predecessors of SWAN/DWS,DWV)
APPLICATIONS (1989): http://www.slideshare.net/…/1989-pb-sprintsightsbrochureful…
118 people reached
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June 6, 2013 ·
http://www.slideshare.net/…/2013-06-tdr-measurement-and-sim…
2013 06 tdr measurement and simulation of rg58 coaxial cable s-
par...

Piero BelforteSpartaco CaniggiaJune 04, 20131TDR measurements andsimulations of RGU 58
coaxialcable S-parameters
SLIDESHARE.NET
68 people reached
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May 13, 2013 ·
50 people reached
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May 5, 2013 ·
Just published on the WEB! http://www.slideshare.net/Pie…/2013-pb-dws-vs-microcap-10-rl
2013 pb dws vs microcap 10 rl

A simple 10-cell RL-TL test circuit has been simulated using two completely different simulators:
Microcap10 (MC10, evaluation version) and DWS. The first one
SLIDESHARE.NET
56 people reached
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May 2, 2013 ·
10%-90% rise time at the output of 1000 cells having erfc shaped transfer function.
42 people reached
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May 2, 2013 ·
Here you can see the results coming from previous circuits:http://www.slideshare.net/…/2013-
pb-prediction-of-rise-time…

2013 pb prediction of rise time errors of a cascade of equal behav...
May 2nd 2013 Copyright 2013 Piero Belforte1Prediction of rise time errors of a cascade ofequal
behavioral cells.IntroductionIn this paper the effects of finite
SLIDESHARE.NET
45 people reached
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May 2, 2013 ·
Circuit to show rise time effects on a chain of 10 2-port S-parameters blocks (SWAN mode).
48 people reached
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April 27, 2013 ·
97 people reached
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April 26, 2013 ·
http://www.slideshare.net/…/tdr-measurement-of-rg58-coaxial…
Tdr measurement of rg58 coaxial cable s parameters 120413
A RG58 CU coaxial cable is characterized and modeled usinf SWAN/DWS techniques.
SLIDESHARE.NET
37 people reached
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April 16, 2013 ·
http://www.youtube.com/watch?v=wuHdcEot5Uk
RG58 coaxial cable behavioral model optmization using DWS
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...

YOUTUBE.COM|BY PIERO BELFORTE
47 people reached
Boost Post
April 5, 2013 ·
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!
90 people reached
Boost Post
March 27, 2013 ·
Cisco Systems adopts Spicy SWAN for simulation!
73 people reached
Boost Post

March 19, 2013 ·
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
Spicy Schematics - Wiring and simulation on
ipadhttp://ischematics.comhttps://www.facebook.com/SpicySchematicshttp://groups.google.com/group/
spicy-schemat...
YOUTUBE.COM
75 people reached
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March 17, 2013 ·
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!

93 people reached
Boost Post
March 11, 2013 ·
Interworking of Ipad mini and Mac mini on the previous circuit.
79 people reached
Boost Post
March 10, 2013 ·
SWAN simulation of a Fault Insertion on a 10Gbps CML net using the new differential probes
of HiSAFE+ to be used by Cisco Systems.

93 people reached
Boost Post
March 10, 2013 ·
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!
120 people reached
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March 8, 2013 ·

Homepage
57 people reached
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March 5, 2013 ·
Removing via holes effect on the previous 10Gbit/sec differential interconnects...
68 people reached
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March 5, 2013 ·
....connecting a 10Gbit/sec Binary Pattern generator to the coupled traces including via holes:
SWAN sim results.

61 people reached
Boost Post
March 4, 2013 ·
Optimized SWAN micro-behavioral model of coupled microstrips.
73 people reached
Boost Post
March 4, 2013 ·
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.
98 people reached
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February 25, 2013 ·
Results of previous SWAN TDR setup of a coupled pair of pcb traces (microstrips).
57 people reached
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DIGITAL DIFFERENTIATOR RESPONSE to a SINE INPUT.
51 people reached
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New Video on our YouTube Channel, How to Make Wires:http://youtu.be/7P5UMFph8Pk
New Wiring Method and New Probes - Spicy v2.4.5
Spicy Schematics - Group Select, Copy/Paste Example (no
audio) http://ischematics.comhttps://www.facebook.com/SpicySchematicshttp://groups.google.com/grou
p...
YOUTUBE.COM
56 people reached
Boost Post
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 transmission line calculations that you
need to run at the speed of light? TDR anyone? Spicy SWAN is our new professional version of
Spicy and uses the power of Digital Wave Network (DWN) DSP techniques using the
revolutionary Simulation by Wave ANalysis (SWAN) engine! Check out Spicy SWAN at our
website:
http://ischematics.com

Homepage
ISCHEMATICS.COM|BY 2011-2015 ISCHEMATICS LLC
38 people reached
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To learn the differences between SWAN and Spice, here the new link
:https://docs.google.com/…/d/0Bx-ZqV10CSiNTmxPM0RjTmZNS…/edit
2013_SpicySWAN_CONCEPTS.pdf - Google Drive
DOCS.GOOGLE.COM
91 people reached
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Like · · Share
VOUT vs VIN CIRCULAR ORBITS of previous Digital Integrators.
104 people reached
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SWAN: unit step response of H(s) = 1/s (ideal integrator) transfer function.
113 people reached
Boost Post
Here the SWAN sim results of the previous FI setup.
90 people reached
Boost Post
A practical application of the BTM wire model: brute force fault insertion on a high-speed
clock interconnect (2Ghz).

87 people reached
Boost Post
Here you will find the sim report of WIEN
OSCILLATOR:https://www.ischematics.com/webspicy/report.py…
Homepage
84 people reached
Boost Post
Here a collage of SWAN sim results of the WIEN OSCILLATOR.

93 people reached
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A WIEN oscillator in SWAN mode.
76 people reached
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Voltage waveform spectrum of the nonlinear LC oscillator.
94 people reached
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V-I orbits related to previous nonlinear LC free-running oscillator.
91 people reached
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SWAN mode simulated voltage waveform related to nonlinear LC oscillator.

90 people reached
Boost Post
Another example of how SWAN can be used to solve a higher order system of nonlinear
differential equations.
91 people reached
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Like · · Share
February 6, 2013 ·
A very simple RL DIODE circuit showing a CHAOTIC behavior
63 people reached
Boost Post
Spicy Schematics - ischematics.com commented on ischematics.com.
February 5, 2013 ·
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….

Spicy Schematics
Chat!
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Like ·
February 4, 2013 ·
Here the SWAN mode report of he simplest LC 50Mhz free oscillator.
Homepage
56 people reached
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February 1, 2013 ·
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.
Homepage
54 people reached
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February 1, 2013 ·
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/1182850105858949695…/DWSIMAGES…
PICASAWEB.GOOGLE.COM

53 people reached
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Like · · Share
February 1, 2013 ·
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) ... smile emoticon
84 people reached
Boost Post
January 29, 2013 ·
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 that no Nodal Analysis equations solution is required. It is enough to apply the samples of
voltage/current sources to this DSP equivalent to get the samples of results (voltages, currents,
powers, waves etc,) in the desired points of the netw...
See More

ISCHEMATICS.COM
116 people reached
Boost Post
January 28, 2013 ·
SWAN/DWS story.
https://docs.google.com/…/d/0Bx-ZqV10CSiNaG5yaW1JWi1EW…/edit
2013_SWAN_DWS_STORY_270113_PB.pdf - Google Drive
DOCS.GOOGLE.COM
160 people reached
Boost Post
January 25, 2013 ·
Leonardo da Vinci's version of Spicy SWAN (1510).

174 people reached
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January 24, 2013 ·
Detailed view of TDR reflected wave related to ckt TDR_LINE_CAP_DISTR.

150 people reached
Boost Post
January 24, 2013 ·
Yet another example on how Spicy SWAN can be applied to the simulation of TDR measures :
a uniformely C loaded segment of Transmission Line.
94 people reached
Boost Post

January 22, 2013 ·
TDR (Time Domain Refectometer) basics: measure on a 75 ohm ideal cable (length=1m).
159 people reached
Boost Post
January 20, 2013 ·
Using DWS probes in SWAN mode: results.

171 people reached
Boost Post
January 20, 2013 ·
Using DWS probes in SWAN mode.
174 people reached
Boost Post
January 19, 2013 ·
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!

144 people reached
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January 17, 2013 ·
Example of SWAN mode instantaneous power monitoring.
127 people reached
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January 17, 2013 ·
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…

Spicy Circuit Schematics & Simulation Capture - Design Report ©
2011,2012 iSchematics.com
Design Report
ISCHEMATICS.COM
126 people reached
Boost Post
January 11, 2013 ·
SIMPLE FULL WAVE RECTIFIER WITH LC RIPPLE FILTER.

126 people reached
Boost Post
January 5, 2013 ·
new video on how to make wires using the new simpler method ... captions available on
youtube version
131 people reached
Boost Post
January 4, 2013 ·
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!
111 people reached
Boost Post
January 4, 2013 ·
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!
111 people reached
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2012
HIGHLIGHTS
December 5, 2012 ·

Spicy Tutorial Video #3
136 people reached
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December 5, 2012 ·
Spicy Tutorial Part 2
136 people reached
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December 5, 2012 ·
Spicy Tutorial Part 1

129 people reached
Boost Post
December 5, 2012 ·
How to make wires video tutorial
128 people reached
Boost Post
December 5, 2012 ·
NEw Copy Paste Feature Video!
126 people reached
Boost Post

December 4, 2012 ·
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)
126 people reached
Boost Post
December 2, 2012 ·
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.
115 people reached
Boost Post
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...
58 people reached
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SWAN netlist related to the previous simulation:

******************************************
* Netlist and simulation file
* Generated by: SPICY Schematics (ischematics.com)...
See More
60 people reached
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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!
Spicy Schematics - Group Select, Copy/Paste Example (no audio)
Spicy Schematics - Group Select, Copy/Paste Example (no
audio) http://ischematics.comhttps://www.facebook.com/SpicySchematicshttp://groups.google.com/grou
p...
YOUTUBE.COM
28 people reached
Boost Post
And this one is the SWAN netlist of CHARGE_COSERV circuit generated by Spicy SWAN
Netlist and simulation file
* Generated by: SPICY Schematics (ischematics.com)
* File: CHARGECONSERV...
See More
47 people reached
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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.
61 people reached
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November 8, 2012 ·
XY PLOTS OF CHUA7
57 people reached
Boost Post

November 8, 2012 ·
And this one is an artistic view of Piero related to circuit CHUA7.
65 people reached
Boost Post
November 8, 2012 ·
And this is the time-domain multiplot related to circuit CHUA7.
57 people reached
Boost Post

November 8, 2012 ·
Another little variation on CHUA's theme.
67 people reached
Boost Post
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.
66 people reached
Boost Post

November 7, 2012 ·
Using Spicy SWAN on Ipad2.
68 people reached
Boost Post
November 6, 2012 ·
Just fyi, small bug in syncing files to server .. fixed on web version already, ipad version being
submitted to Apple tonight ... fyi
87 people reached
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October 31, 2012 ·
The first Spicy newsletter!
http://www.ischematics.com/newsWeb.py

Spicy Schematics & Circuit Simulation - News © 2011,2012
iSchematics.com
Spicy Schematics - Electronic Circuit Schematic Capture for Tablet and Web - works with iPad, Web...
73 people reached
Boost Post
October 28, 2012 ·
FYI: Spicy Web has a small improvement . all buttons and fields are much bigger and easier to
see, click ... will roll out the change in the next ipad update as well .. smile emoticon
78 people reached

Spicy Schematics Facebook Post Collection_Nov. 2012- Feb. 2015

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