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Hendrik Santo Spicy Schematics -
on Monday ischematics.com
Results of comparison between
Marco Comoglio delayed VCCS and H(z)
on Monday implementations of a digital
1 integrator,T=10ns SINE INPUT
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Walter Billingham F=100KHz
about a week ago

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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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Yesterday

VOUT vs VIN CIRCULAR ORBITS of previous Digital Integrators. Moses Ba
Hi, I am looking to build circuit diagram solar panel control sy…
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From my IPad mini SPICY FREE, SWAN SIM of 91m RG58 c…

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Yesterday Yesterday

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


Piero Belforte Here the sim report:
https://www.ischematics.com/webspicy/report.py?
RCODE=72750753165234277247a#newwin
Spicy Schematics Homepage
www.ischematics.com Piero Belforte SWAN/DWV multiplot of I/Os and difference signal.
Spicy Schematics - Electronic Circuit Schematic Yesterday at 12:57am · Like
Capture for Tablet and Web - works with iPad,
Web - Homepage Write a comment...

Yesterday at 12:42am · Like · Remove Preview 52 people saw this post Promote

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53 people saw this post Promote Yesterday

Sampled digital domain (SWAN) : Comparison between delayed
Spicy Schematics - ischematics.com VCCS and H(z) implementations of a digital integrator,T=10ns
Tuesday
SINE INPUT F=100KHz

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


Piero Belforte Here the sim report:
RCODE=46865034100207800187a#newwin

www.ischematics.com
Spicy Schematics - Electronic Circuit Schematic
Web - Homepage

Tuesday at 7:48am · Like · Remove Preview
Write a comment...

Tuesday

Tuesday
Very nonlinear source example built from trig expressions in spice
... see example page for more.

Here the SWAN sim results of the previous FI setup.
http://www.ischematics.com/example.html


Piero Belforte The unefectiveness of the brutal short circuit to
ground is evident: the output of the clock receiver continues to Like · Comment · Share
switch despite the 9 cm wire shorting the clock net to ground.
Tuesday at 12:36am · Like

Piero Belforte The duty cycle of the clock waveform is affected
but a digital circuit connected to this clock signal can continue to
work normally. Spicy Schematics - ischematics.com
Tuesday at 12:37am · Like Tuesday

Piero Belforte Here the sim report link:
https://www.ischematics.com/webspicy/report.py? A practical application of the BTM wire model: brute force fault
RCODE=40077021872863355808a#newwin insertion on a high-speed clock interconnect (2Ghz).
www.ischematics.com
Web - Homepage

Tuesday at 12:38am · Like · Remove Preview

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Monday

SWAN sim results of the previous setup (reflected waves).


Piero Belforte Despite the optimized values of both TL (30 ohm , Like · Comment · Share
10ps) and inductance L (70nH) values, the BTM response is the
Piero Belforte The 2Ghz interconnect model is oversimplified just
most accurate.
to show the principles. The digital receiver model is also very
Tuesday at 12:04am · Like simple( .5 switching threshold) and 1pF in capacitance.
Piero Belforte Only SWAN supports BTM modelling. Tuesday at 12:28am · Like
Write a comment...
Piero Belforte Here the sim report of the setup:
RCODE=64354725122287810260a#newwin 54 people saw this post Promote

www.ischematics.com
Capture for Tablet and Web - works with iPad, Monday
Web - Homepage

This SWAN setup compares the BTM model of the wire loop to an
Tuesday at 12:08am · Like · Remove Preview optimized (L+TL) circuital model.

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Monday

PWL fitting of CSA803 response of the 9cm wire loop.


Song Juh Janson Ja que funtion cumple este circuito?
See Translation

Piero Belforte This circuit simply compares the BTM model of the
wire with its electrical equivalent, giving also the difference
between the TDR response of both implementations. Obviously BTM
model is more realistic and accurate that the circuital model (see
previous posts).

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Oswaldo Cano likes this.
Piero Belforte By means of this simple procedure an accurate
Behavioral Time Model (BTM) of the wire loop is build up in SWAN
mode. This model has an equivalent bandwith of 20Ghz (bandwith of
the CSA803). Spicy Schematics - ischematics.com
Monday at 11:45pm · Like Monday
Oswaldo Cano Is this a Sim vs. Meas wfm overlay correlation?
Tuesday at 3:24am via mobile · Like One-port TDR (CSA803) characterization of a 9cm long AWG18
Spicy Schematics - ischematics.com Yes, prctically it is. Here wire loop.
the pwl extraction is shown, and the resulting BTM model response
is the same. See also following posts.

Write a comment...


February 16

VOUT and power at capacitor C0 spectra of the WIEN oscillator
are shown here.


Bill Geronatsios likes this.

Spicy Schematics - ischematics.com The wire loop is shorted
to ground of the support p.c.b.
Monday at 11:33pm · Like

Write a comment...


Steve Grout likes this.
Spicy Schematics - ischematics.com Accurate signal spectra February 16
can be obtained thanks to the huge number of samples coming
from DSP (Digital Signal Processing) SWAN sims. The same thing
doesn't apply to Spice and NA (Nodal Analysis) circuit simulation tools. Here you will find the sim report of WIEN OSCILLATOR:
February 16 at 4:12pm · Edited · Like https://www.ischematics.com/webspicy/report.py?
Write a comment...
RCODE=28008276605001616111a#newwin

Promote Spicy Schematics Homepage
37 people saw this post
www.ischematics.com

Spicy Schematics - Electronic Circuit Schematic Capture for Tablet and
Web - works with iPad, Web - Homepage


Spicy Schematics - ischematics.com This circuit as the other
discussed in this group can be downloaded from the SWANEX On
Line Circuit Library of Spicy SWAN both on WEB and Ipad apps.
February 16 at 3:04pm · Like

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February 16 February 16

A WIEN oscillator in SWAN mode. Here a collage of SWAN sim results of the WIEN OSCILLATOR.

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2 people like this.

Spicy Schematics - ischematics.com A WIEN oscillator utilizing a Write a comment...
SWAN macromodel of the operational amplifier(uA741).This model includes
two poles, slew rate limiting and DELAY (100ns).
February 16 at 11:52am · Like 43 people saw this post Promote

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23 people saw this post Promote February 14

Voltage waveform spectrum of the nonlinear LC oscillator.
February 14

V-I orbits related to previous nonlinear LC free-running oscillator.

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2 people like this.

Piero Belforte The harmonic content generated by nonlinearities
of capacitance is very evident in the spectrum.
Martin Piron likes this.
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Piero Belforte The orbits are not elliptical due to capacitor's non
linearities.
February 14 at 6:33pm · Like 42 people saw this post Promote

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41 people saw this post Promote February 14

SWAN mode simulated voltage waveform related to nonlinear LC
Spicy Schematics - ischematics.com oscillator.
February 14

Free running LC oscillator with NON LINEAR capacitor.


Lucky Pataky likes this.

Like · Comment · Share Piero Belforte Waveform distortion with respect a sinusoidal
behavior due to capacitor's non linearities is very evident.
29 people saw this post Promote February 14 at 6:32pm · Like

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SWAN model of a NONLINEAR CAPACITOR from its basic Response of previous RC circuit with nonlinear C.
differential equation.


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February 13

Sim results of previous system solver icluding XY trajectories.

February 13

Here the sim results: the unknowns X Y and Z are plotted versus
time.


2 people like this.

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February 13
February 12 Another example of how SWAN can be used to solve a higher
order system of nonlinear differential equations.
Spicy SWAN Interworking between PC and Ipad Mini.


3 people like this. 39 people saw this post Promote

Spicy Schematics - ischematics.com The LORENZ equation
diagram developed and simulated on the Ipad mini with Spicy SWAN
app is exported as netlist on the PC. The resident SWAN app running
on the PC exploits DWV (Digital Wave Viewer) plotting features to
February 10
show XY trajectories of Lorenz attractor.
February 12 at 11:29am · Edited · Like

Spicy Schematics - ischematics.com Spicy SWAN gives the Sim result of previous LORENZ ATTRACTOR computational blocks
users the ULTIMATE and UNIQUE solution to CIRCUITAL diagram as XY trajectory
SIMULATION with the advantages of mobile and low price!
February 12 at 11:37am · Like

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February 10

LORENZ ATTRACTOR implementation in SWAN mode.


Piero Belforte Here the variable Z (Y axis) is plotted versus X
(X.axis). A typical Lorenz orbit is obtained:
http://en.wikipedia.org/wiki/Lorenz_system

Lorenz system - Wikipedia, the free
encyclopedia
en.wikipedia.org
The Lorenz system is a system of ordinary
differential equations (the Lorenz equ... S ee M ore

February 10 at 1:25pm · Like · Remove Preview

Piero Belforte Interesting video here:
http://www.youtube.com/watch?v=EF5Wvi_Iiy4
An Introduction to Chaos Theory
View 2 more comments
with the Lorenz Attractor
Piero Belforte In the schematic the values of constants are: www.youtube.com
rho=28, sigma=10 and beta=8/3 that assure a CHATIC behavior. The Lorenz Attractor is likely the most
February 10 at 1:04pm · Like commonly used example of Chaos
Theory. T... S ee M ore
Piero Belforte http://en.wikipedia.org/wiki/Lorenz_system
Lorenz system - Wikipedia, the free
encyclopedia
Write a comment...
en.wikipedia.org
The Lorenz system is a system of ordinary
differential equations (the Lorenz equ... S ee M ore 41 people saw this post Promote


Write a comment... Spicy Schematics - ischematics.com
February 9

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
February 9

INTEGRATORS error (difference between opamp and ideal
integrator) changing opamp parameters.



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February 9
이명래 likes this.

Piero Belforte Here I tried to increase the outpput resstance of
the opamp fro 1 to 100 ohms, and I/O DELAY from 100ns to 200ns.
Here the detailed view of the difference between the output
February 9 at 4:24pm · Like voltages of the two models.

Write a comment...


February 9

Here the result plots of the INTEGRATORS circuit.


이명래 likes this.

Piero Belforte here the related Spicy SWAN report:
RCODE=03645137430480008614a#newwin

www.ischematics.com
Web - Homepage
Write a comment...



Here the digital mode plot of previous example. SWAN simulation and comparison of two INTEGRATOR models.


Roby Nugraha likes this. 이명래 likes this.

Write a comment... Spicy Schematics - ischematics.com This circuit is already
available in the SWANEX library accessible from the SpicySWAN
apps.
42 people saw this post Promote February 9 at 2:44pm · Like

Piero Belforte The comparison is between an opamp and exact
cap
Spicy Schematics - ischematics.com charge macromodels. Voltage and currents
February 8 clampling due to finite supply are modeled by PWL behaviors. Opamp
delay and slew rate can be also taken into account.
A very simple 3-input AND circuit implemented using SWAN
Write a comment...
voltage
controlled switches with switching threshold of .5V

February 7

Here the chaotic V-I orbits related to RLDIODE CIRCUIT (SWAN
mode,DWV plot)


2 people like this.


Piero Belforte The swictches here are ideal (delay virtually 0).

Spicy Schematics - ischematics.com Here the rellated sim
report: https://www.ischematics.com/webspicy/report.py?
RCODE=08645812281442375800a#newwin Like · Comment · Share

Spicy Schematics Homepage Oswaldo Cano likes this.
www.ischematics.com
Oswaldo Cano On the same page, what about a Lorentz
attractor simulation?
Web - Homepage February 7 at 4:40am · Like

Spicy Schematics - ischematics.com Starting from an
electrical circuit that implements the Lorentz equation, sit is possible
February 8 at 7:59pm · Like · Remove Preview for sure with SWAN. In the past I implemented several new Chaotic
circuits using SWAN/DWS .
Write a comment...

Spicy Schematics - ischematics.com Here an example of a
Lorentz circuit implementation:
http://frank.harvard.edu/~paulh/misc/lorenz.htm

build a lorenz attractor -- electronic
circuit -- chaos
frank.harvard.edu

February 7 at 7:35am · Like · Remove Preview

Spicy Schematics - ischematics.com An here the orbits a
new chaotic circuit (I called it winding chaos) I discoverd about 1
year ago using DWS: http://www.youtube.com/watch?
v=HktyaWhySC4

WINDING CHAOS by DWS
www.youtube.com
CHAOTIC COLLECTION OF IMAGES
COMING FROM DWS SIMULATION OF A
NEW CLASS OF CHAOTIC CIRCUITS
DISCOVERED BY PIERO BELFORTE


Piero Belforte The Lorentz attractor circuital implementation
recalled in the previous post can be easily implemented in SWAN
mode...if someone would like to try...

Spicy Schematics - ischematics.com About Lorenz attractor
simulation, it has been done, see next posts. It is now amongthe
Spicy SWAN public examples and can be simulated directly by the
userrs both on WEB and on Ipad.

Write a comment...



A very simple RL DIODE circuit showing a CHAOTIC behavior Here the sim result comparison of previous RLDIODE circuit sims
in SWAN vs Spice modes.

4 people like this.

Piero Belforte This circut as many others already discussed on Write a comment...
this group are among the SWAN examples available in Spicy SWAN
application (web and mobile).

Piero Belforte updated report here:
RCODE=54828777601456614766a#newwin Spicy Schematics - ischematics.com
February 5
Voice
www.ischematics.com
Search for people, places and things Piero Belforte Find Friends Home
Spicy Schematics - Electronic Circuit Schematic Plots of SWAN errors vs tstep values for the 50Mhz LC oscillator.
You are posting, commenting, and liking asCapture for Tablet- and Web - works — Change to Piero Belforte
Spicy Schematics ischematics.com with iPad,
Web - Homepage

Spicy Schematics - ischem… Timeline Now Admin Panel Ads Manager

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2013
62 people saw this post Promote 2012

Launched

February 5

This collage shows the comparison between Spice and SWAN
modes when simulating the previous free-running 50Mhz LC
oscillator.

See Your Ad Here

SPICY is fast, intuitive, and
allows you to literally draw
circuits with your fingers.
Like · Comment · Share Like · Comment · Share Create, save,...

Piero Belforte The free running LC oscillator output is compare to Piero Belforte These comparative DWV plots report the behavior
a reference sinusoidal voltage source VREF (frq.=50Mhz) in order of errors on a 100us (50K oscillations) time window after oscillator's Like · Piero Belforte likes this.
to monitor the error between the voltage at the oscillator's out and start up, for various chices of the simulation time steps (SWAN mode).
the reference. February 5 at 2:38pm · Edited · Like Advertise Your Page
Chat (3) Piero Belforte Increasing the time step over 1ps the peak-to-
Piero Belforte On the top right the Spice error result is reported. peak max amplitude of the error increases. At 100fs time step,
SWAN mode result is at the bottom. The window is 100ns from 9.9 70us after start up the error increases an gets larger than 1ps step
to 10us after start up. The error trace is in BLUE. value (49uVpp max at t=0). This effect can be due to rounding errors
February 5 at 1:08pm · Edited · Like effects due to huge number of calculated samples when working at
100fs step (1 BILLION SAMPLES on a 100us window).
Piero Belforte It easy to notice that after 20us of free February 5 at 3:02pm · Edited · Like
oscillations (1000 oscillations) the Spice error is about 1Vpp
because the oscillator signal has shifted accumulating a 1/4 period Write a comment...
delay (about 5ns).
February 5 at 12:51pm · Edited · Like
Piero Belforte In SWAN mode, on the contrary, working at 1ps
tstep, the two waveforms (oscillator & ref) are still perfectly
aligned. The amplitude error is on the order of 44 MICROVOLTS to be
compared to 1VPP of Spice. SWAN amplitude error is 88db lower than Spicy Schematics - ischematics.com commented on a link.
Spice error. February 5

Piero Belforte Hoping that the sin function is more accurate than Accuracy comparison between Spice mode and SWAN mode for a LC free
SWAN output! running oscillator (50Mhz) compared to a sin source (to be run in Spce and
February 5 at 2:27pm · Like SWAN mode for comaparison) https://www.ischematics.com/webspicy/
report.py?RCODE=26441004771723520648a#newwin.
Piero Belforte Spice vs SWAN comparison here is like the
difference between frequency stabilty of a free-running oscillator
vs a QUARTZ crystal oscillator. Spicy Schematics
February 5 at 2:29pm · Like www.ischematics.com

Piero Belforte I'd like to notice that the peak amplitude of
Spicy Schematics - Electronic Circuit
oscillator's voltage (VOSC) is very close to theoretical value
Schematic Capture for Tablet and Web -
pi/10and results with a 10mA intial current flowing in the inductor L
works with iPad, Web - Chat!
(1uH) and a value of capacitor C proportional to 1/pi**2.

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February 4
February 4
Here the frequency spectrum of the voltage of the 50Mhz
oscillator (SWAN mode).
Here the SWAN mode report of he simplest LC 50Mhz free
oscillator.

RCODE=62433800025120153633a#newwin

www.ischematics.com

Web - Homepage



Piero Belforte In Spice mode, the zero crossing error is about
18uV after 1us (max allowable due to sim time), abut 50X SWAN
mode (on a time point 50X larger).

Piero Belforte So even in this case the oustanding performance
of SWAN over Spice is demonstrated: at least 50X faster AND 50X
more accurate, that gives a 2500 FIGURE of MERIT SWAN/Spice even
in this extremely simple case.

Piero Belforte This spectrum was obtained from 2Megasamples of
the SWAN sim performing a 4096 point FFT available in DWV.
Write a comment... February 4 at 4:08pm · Like

Piero Belforte 120 db in amplitude of S/N ratio, depending also
54 people saw this post Promote on the finite time duration (1us) chosen, that means 1e6 on a linear
scale.

Spicy Schematics - ischematics.com Piero Belforte This agrees with the .43uv zero crossing error.
February 2 February 4 at 4:47pm · Edited · Like

Write a comment...
SWAN mode: frequency response of the previous CHAIN TEN 5th-
ORDER LOW-PASS CHEBYSHEV FILTERS ( wc = 10MEGRAD, fc =
1.59MHz ).

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.

RCODE=31843823081086012466a#newwin

www.ischematics.com

Web - Homepage


Piero Belforte As known, Spice can have problems dealing with s-
plane transfer functions due to variable time-step. SWAN mode
doesn't suffer of these issues because it works at FIXED time -step.
Piero Belforte This freqeuncy response has been obtained as
FFT (Fast Fourier Tranform) of IMPULSE RESPONSE of the circuit Write a comment...
under analysis.
February 2 at 5:16pm · Edited · Like 53 people saw this post Promote

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February 1

Here you can find a SCREENSHOT GALLERY related to
February 1 SWAN/DWS sims in several fields of application, recently carried
out by Piero:
https://picasaweb.google.com/118285010585894969594/DWSIM
Congratulations Spicy, we now hit 200 FB likes! Thanks everyone
AGES#5729896428676687522
... remember if you like Spicy, please help by posting a good
review on itunes .. it helps us support development of the app ..
DWS IMAGES
we have only a handful of reviews and most of the time from the
picasaweb.google.com
few who wanted something else and were not happy ... but 200
FB likes means maybe we can get 200 good reviews on itunes! Photos by piero belforte, Mar 29, 2012 - Selection
That would help us out a lot ... just go to itunes, search of DWS (Digital Wave Simulator) Screenshots by
Piero Belforte
ischematics.com, and you can review the free, or full or now
swan versions, which ever you like .. (or review all if you like) ...
:)

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2 people like this.

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Earlier in 2013

Spicy Schematics - ischematics.com shared a link. Likes
January 29 2013

The concept behind Spicy SWAN is that the user can choose
between two fully COMPLEMENTARY sim engines (Spice,DWS), Liked Electrical & Electronics Engineering
like it happens for HYBRID ENGINE cars.

SWAN/DWS maps the circuit under analysis on an equivalent
DIGITAL WAVE NETWORK so th...S ee M ore

http://www.ischematics.com/images/2013_D
WS_TIMELINE_270113.jpg
www.ischematics.com Spicy Schematics - ischematics.com
January 28

SWAN/DWS: a 4-decade long high tech project.


Piero Belforte https://docs.google.com/file/d/0Bx-
ZqV10CSiNMk1SNC1zSDNlVkk/edit

2013_PB_Spicy_SWAN_CONCEPTS.pdf - Google Drive
docs.google.com

January 30 at 12:31am · Like · Remove Preview

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January 28

SWAN/DWS story.

https://docs.google.com/file/d/0Bx-
ZqV10CSiNaG5yaW1JWi1EWjQ/edit

2013_SWAN_DWS_STORY_270113_PB.pdf - Google Drive
docs.google.com

View 1 more comment

Like · Comment · Share Piero Belforte
http://www.ischematics.com/SWAN_DWS_STORY_270113_PB.pdf
Piero Belforte Behind SWAN/DWS technology and related
January 29 at 5:12pm · Like
applications there is an effort of about HALF MILLENNIUM MAN-
YEARS! Piero Belforte
January 28 at 6:28pm · Like http://www.ischematics.com/DWS_8.4_manual_27012013.pdf
Write a comment...
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January 25 January 25

EFFECTS of TDR PULSE RISE TIME on RESPONSE. Leonardo da Vinci's version of Spicy SWAN (1510).

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Krar ALturfe likes this. 3 people like this.

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Piero Belforte With the shortest rise time (10ps 20%-90%, Lucky Pataky HA HA! This is the coolest ever! Leonardo even
equivalent bandwith 35 Ghz)) we get the maximum resolution. The knew how to get the male dominated engineering world to notice
negative peaks due to lumped capacitances are clearly visible and the SWAN there. What a genius marketing Ad idea of the Spicy Swan!
reach a minimum on impedance levels. January 25 at 8:32pm · Like · 1
Piero Belforte
Piero Belforte Slowing down the TDR pulse, the peaks due to http://www.ischematics.com/SWAN_DWS_STORY_270113_PB.pdf
lumped loads decrease and disapppear with a 500ps rise time January 29 at 5:12pm · Like
(700Mhz analog bandwith). In this last situation the uniformelyy cap-
loaded segment behaves like a uniform TL of about 41ohm impedance Write a comment...
and a total 2.46 ns delay. The extra 460ps round-trip delay is the
effect of lumped caps on the pure 2ns delay of the unloaded line.
January 25 at 8:26pm · Edited · Like 174 people saw this post Promote

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January 24

Detailed view of TDR reflected wave related to ckt
TDR_LINE_CAP_DISTR.
January 24

Here the results of previous circuit TDR_LINE_CAP_DISTR


2 people like this.

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2 people like this.

Piero Belforte Here the related report
RCODE=80242701301768821164a#newwin Spicy Schematics - ischematics.com
January 24
www.ischematics.com
Yet another example on how Spicy SWAN can be applied to the
Capture for Tablet and Web - works with iPad, simulation of TDR measures : a uniformely C loaded segment of
Web - Homepage Transmission Line.

January 24 at 10:10pm · Like · 1 · Remove Preview

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January 24

INDUCTIVE discontinuity: TDR response.


Robert Allen likes this.

Piero Belforte The line of previous examples here is connected in
the middle to a 1ns (20cm approx) segment loaded by 10 1pF caps
every 100ps (2cm).
January 25 at 7:29am · Edited · Like

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January 23

SWAN sim of a TDR measure on a cable with capacitive
Like · Comment · Share discontinuity: results.
Robert Allen likes this.

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Piero Belforte In this case the sign of the reflection is positive
due to series inductive reactance. Even in this case the value 1 of
the the rflected wave is not reached because of the 30ps rise time of
the TDR generator step.
January 24 at 10:05am · Like

Piero Belforte Here the report:
RCODE=45580045037631818655a#newwin

www.ischematics.com
Web - Homepage


Write a comment...


January 23

SWAN sim of a TDR measure on a cable with capacitive
discontinuity.


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Piero Belforte here the report:
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Piero Belforte Due to finite 30ps (20%-80%) risetime of TDR
pulse compared to 100ps RC time constant of the cap, the -1
reflction (short circuit) is not reached.

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Piero Belforte The lossless 50-ohm cable under TDR test is 1m
long. The 2pF lumped discontibuty is placed after 40cm from the
TDR generator end.
January 23 at 10:16am · Like Spicy Schematics - ischematics.com
January 22
Piero Belforte A SWAN/DWS MULTIFUNCTION PROBE is placed
at the pulse generator port (node TDR1) of TDR launch line T_TDR
to monitor both the voltage (V) and the wave (B) reflected back by TDR (Time Domain Refectometer) basics: measure on a 75 ohm
the DUT. ideal cable (length=1m), simulated results (SWAN mode).

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January 22

TDR (Time Domain Refectometer) basics: measure on a 75 ohm
ideal cable (length=1m).


Piero Belforte In Blue the TDR reponse in Reflection coefficient
units (rho): 1.2 is the reflection coefficient of 75 ohm vs 50 ohm
reference. In light green the TDT reponse that is equal to S21 (step
reponse) in red. In green the S11 of the cable (reflected wave) as
step reponse in time domain.

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Jairuz Orejudos Agang-ang likes this.
Piero Belforte SWAN mode circuit, SWAN/DWS probes are placed
to get TDR (Reflection) and TDT (Transmission) volatge waveforms
and related waves (Scattering parameters S11 and S21 of the cable
as step responses in time domain). Spicy Schematics - ischematics.com
January 22 at 10:49pm · Like January 20

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Using DWS probes in SWAN mode: results.

January 20

Using DWS probes in SWAN mode.

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Like · Comment · Share 4 January 19

Spicy SWANs take off.

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!



January 17

Example of SWAN mode instantaneous power monitoring.

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January 17

The schematic related to previous short circuits trials(SWAN).

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Spicy Schematics - ischematics.com Spicy Schematics - ischematics.com shared a link.
January 11 January 17

SIMPLE FULL WAVE RECTIFIER WITH LC RIPPLE FILTER. 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?
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New feature on Spicy Web (coming soon to ipad) .. there are now
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part pin if there is one nearby .. this is particul...S ee M ore


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





January 5

Jan 5, 2013 5:00am
new video on how to make wires using the new simpler method ... captions available on youtube version



January 4 January 4

Spicy has updated our web version (ipad will follow soon) to have FYI, the next version of Spicy is packed with enhacements,
a new simple method for making wires .. just click the wire including new SIMPLE wiring procedure, and other enhancements!
button, then click and drag your wire .. when you lift up its done look for it soon on the app store and on the web!
... 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 Like · Comment · Share 1
few users have asked for this, so try it out on the web today, and
we will roll it out on ipad soon!

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