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`
`LTspice - Wikipedia
`
`LTspice
`
`LTspice
`
`LTspice is freeware[4][5] computer software implementing a SPICE
`electronic circuit simulator, produced by semiconductor manufacturer
`Linear Technology, now part of Analog Devices.[2] It is used in-house at
`Linear Technology for IC design, and the most widely distributed and
`used SPICE program in the industry.[3] LTspice isn't artificially crippled
`to limit its capabilities (no node limits, no component limits, no
`subcircuit limits).[3][6]
`
`Contents
`Overview
`LTspice/SwitcherCAD III
`LTspice IV
`LTspice XVII
`Updates
`Number conventions
`Scale factors
`Compatibility
`Node name conventions
`File format
`Example
`Schematic file
`Plot file
`
`See also
`References
`Further reading
`External links
`
`Overview
`
`Platform
`Size
`
`Available in
`Type
`
`Original author(s) Mike Engelhardt[1]
`Developer(s)
`Linear Technology,
`Analog Devices[2]
`Initial release
`October 1999[1]
`Stable release
`XVII / July 9, 2019[3]
`Operating system Windows 7, 8, 8.1, 10,
`macOS 10.7+
`IA-32, x86-64
`Windows (41 MB),
`MacOS (101 MB)
`English
`Electronic design
`automation
`Freeware[4][5]
`LTspice webpage (http
`s://www.analog.com/e
`n/design-center/desig
`n-tools-and-calculator
`s/ltspice-simulator.htm
`l)
`
`License
`Website
`
`LTspice provides schematic capture to enter an electronic schematic for an electronic circuit, an enhanced SPICE type
`analog electronic circuit simulator, and a waveform viewer to show the results of the simulation.[2] Circuit simulation
`analysis based on transient, noise, AC, DC, DC transfer function, DC operating point can be performed and plotted as well
`as fourier analysis.[7] Heat dissipation of components can be calculated and efficiency reports can also be generated. It has
`enhancements and specialized models to speed the simulation of switched-mode power supplies (SMPS) in DC-to-DC
`converters.[2][8]
`
`A user can create their own device models, import downloaded models from many electronic component manufacturers,
`or use a model from the device library.[9] LTspice ships with thousands of third-party models (capacitors, diodes,
`inductors, resistors, transistors, ferrite beads, opto-isolators, 555 timer, and more), as well as macro models for Analog
`
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`Devices and Linear Technology parts (ADCs, analog switches, comparators, DACs, filters, opamps, timers, voltage
`references, voltage supervisors, voltage regulators, 0.01% quad resistor networks, and more).[2][6] In the device library,
`Analog Devices part numbers start with "AD", and Linear Technology parts start with "LT".[10]
`
`LTspice does not generate printed circuit board (PCB) layouts, but netlists can be exported to layout programs.[11] While
`LTspice does support simple logic gate simulation, it is not designed specifically for simulating logic circuits.
`
`It is used by many users in fields including radio frequency electronics, power electronics, audio electronics, digital
`electronics, and other disciplines.
`
`LTspice/SwitcherCAD III
`In 1999, LTspice III was released, the first public release.[1] It's designed to run on Windows 95, 98, 98SE, ME, NT4.0, 2K,
`XP. This version is no longer available for download from Analog Devices. Initially, LTspice III was internally released to
`Linear Technology's Field Application Engineers (FAE) in October 1999, who then gave it away during customer visits via
`CDROM media.[1] In June 2001, it was released for public downloading from the Linear Technology website.[1][8]
`Originally, LTspice/SwitcherCAD ran only on Microsoft Windows platforms, but since 2003 it is able to run under the
`Wine Windows compatibility layer on Linux.[12]
`
`LTspice IV
`In 2008, LTspice IV was released.[1][6][13] It's designed to run on Windows 2K, XP, Vista, 7 with a processor that that
`contains a minimum instruction set similar to a Pentium 4 processor.[14] Though IV is still available for download, it is no
`longer maintained. LTspice was originally called SwitcherCAD, but that name was removed when IV was released.[1] A
`native Apple macOS 10.7+ application was introduced in 2013.[15]
`
`LTspice XVII
`In 2016, LTspice XVII was released, and currently it's the latest version.[3] It's designed to run on 32-bit or 64-bit editions
`of Windows 7, 8, 8.1, 10, and macOS 10.7+.[2]
`
`Summary of major changes from LTspice IV to LTspice XVII are:
`
`Add 64-bit executables.[3]
`Add Unicode characters in schematics, netlists, plot.[3]
`Add device equations for IGBT, diode soft recovery, arbitrary state machine.[3]
`Add user symbol and library directory search paths. See option setting at LTspice -> Tools -> Control Panel -> Sym. &
`Lib. Search Paths.[16]
`Add schematic thumbnail and preview support on Microsoft Windows.[3]
`Add editors for most SPICE commands.[3]
`Add multi-monitor support.[3]
`
`Updates
`After Analog Devices purchased Linear Technology in 2016, models for Analog Devices parts were added to the LTspice
`device library over time.
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`Every month, minor updates are released by Analog Devices for software fixes, updates for existing device models, and
`new device models. A user can manually update their installed copy by doing a "Sync Release" from the pulldown menu.
`LTspice has a "Show Change Log" screen that lists every change to the software and models since LTspice XVII was
`released. LTspice doesn't show any subversion numbers as many software programs do, though the software "build date"
`could be treated as such. For example, on 64-bit Windows, the "about" screen shows "LTspice XVII(x64)" then a build
`date and time.
`
`Number conventions
`
`In LTspice, numeric values can be expressed in four different ways: integer (i.e. 1000), real (i.e. 1000.0), scientific e-
`notation (i.e. 1e3, 1.0e3), scale factor notation (i.e. 1K, 1K0).[17]
`
`If the first character after a number isn't the letter "e" for scientific e-notation or a scale factor suffix (left column of table),
`then trailing characters are ignored.[17] For example, 5 is treated the same as 5V / 5Volt / 5Volts / 5 Hz / 5Hertz.
`
`Scale factors
`Integer and real numbers supports a scale factor (multiplier) suffix.[17] These are based mostly on metric conventions.
`
`The suffix (left column) can be upper / lower / mixed case, known as case insensitive.[17] For example, 1MEG / 1meg /
`1Meg represents 1000000; 1k / 1K represents 1000.
`
`Any appended text after the suffix (left column) is ignored.[17] For example, 2MegHz / 2MegaOhm represents 2000000;
`3mV / 3mOhm represents 0.003; 4uF / 4uHenry represents 0.000004.
`
`In LTspice, any suffix (left column) can replace the decimal point of a real number, a common format for printed
`schematics.[17][16] For example, 4K7 represents 4700, 1u8 represents 0.0000018.
`
`Metric
`Name
`
`English
`Name
`
`Power
`of 10
`
`Numeric
`Value
`
`Notes and Common Mistakes
`
`SPICE
`Suffix[17]
`T
`
`G
`
`MEG
`
`K
`
`m
`
`u or µ
`
`n
`
`p
`
`f
`
`tera
`
`giga
`
`mega
`
`kilo
`
`milli
`
`micro
`
`nano
`
`pico
`
`Trillion
`
`Billion
`
`Million
`
`Thousand
`
`Thousandth
`
`Millionth
`
`Billionth
`
`Trillionth
`
`femto
`
`Quadrillionth
`
`1012
`109
`
`106
`
`103
`
`10−3
`
`10−6
`
`10−9
`10−12
`
`10−15
`
`25.4 x
`10−6
`
`1000000000000
`
`1000000000
`
`1000000
`
`1000
`
`0.001
`
`0.000001
`
`0.000000001
`
`0.000000000001
`
`0.000000000000001
`
`0.0000254
`
`Wrong use of m / meg / mil are common
`mistakes in all SPICE programs
`
`"1m" & "1M" doesn't mean "1 megaohm,
`instead "1MEG" is correct[17]
`Older SPICE software doesn't support
`the µ (Mu) character[16]
`
`"1f" & "1F" doesn't mean "1 farad,
`instead "1" is correct[17]
`mil is a thousandth of an inch (0.001")
`which is 25.4 μm[17]
`
`mil
`
`thou
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`Compatibility
`Although LTspice was originally based upon Berkeley SPICE 3f5 source code,[1] it no longer does, thus some of its features
`may create non-portable files. It should be noted that competitor SPICE programs have non-portable features too.
`
`LTspice - Wikipedia
`
`LTspice features that may not be supported by some SPICE programs:
`
`Unicode characters in schematics, netlists, plot.[3] This is a new feature in LTspice XVII, thus older versions of LTspice
`don't support Unicode.[3]
`µ (Mu) character as an alternate symbol for micro (10−6) scale factor, which is Unicode decimal 181 (hex 0xB5). See
`option setting at LTspice -> Tools -> Control Panel -> Netlist Options -> Convert 'µ' to 'u'.[16]
`Suffix replacing decimal point. See option setting at LTspice -> Tools -> Control Panel -> SPICE -> Accept 3K4 as
`3.4K.[16]
`LTspice doesn't support the following features:
`
`LTspice doesn't support scale factors of "atto" 10−18, "peta" 1015, or "exa" 1018.
`HSPICE supports 'a' for "atto" 10−18, which must be replaced with 'e-18' to be compatible with LTspice and other
`SPICE software.
`HSPICE supports 'X' as a synonym for "meg" 106, which must be replaced with 'e6' or 'MEG'to be compatible with
`LTspice and other SPICE software.
`
`Node name conventions
`In LTspice, a node/net (connection point) on the schematic can be labeled by using the Label Net tool button or F4 key.
`The "Label Net" wizard has three choices for a label, two predefined graphical symbols (GND, COM), or a user-defined
`node/net name.[18]
`
`The two graphical symbols represent:
`
`GND - The ground symbol assigns a node with a special global net name of "0".[18]
`COM - The COM symbol assigns a mode with a net name of "COM", which doesn't have any special significance.[18]
`Historically, SPICE and older version of LTspice software only supported printable ASCII characters for node/net names,
`then LTspice XVII added support for Unicode characters.[3]
`
`A user-defined name supports two optional features that can be prepended to the text name:
`
`_ - An underscore causes an overbar to be placed above the entire name, which commonly means an active low
`signal. For example, "_RESET" is shown on the schematic as "RESET".[19]
`$G_ - This means a node is global, no matter where the name occurs in the circuit hierarchy. For example,
`"$G_ENABLE" / "$G_ERROR". It should be noted the ground symbol is treated in a similar way, but it doesn't have
`"$G_" prepended to it.[18]
`When a node/net name is placed on a schematic, it will have one of five different visual representations. Two are
`automatically determined, while three others are chosen by the "Port Type" field in the "Label Net" wizard.[18]
`
`None - Bare text. This is the default.[20]
`Global - "Rectangle" around the text. This is automatically shown for a global net name that starts with "$G_".[20]
`Input - "Rectangle with triangle end" around the text. This is chosen by the "Port Type" field in the "Label Net"
`wizard.[20]
`Output - "Rectangle with triangle on other end" around the text. This is chosen by the "Port Type" field in the "Label
`Net" wizard.[20]
`Bidirectional - "Rectangle with triangle on two ends" around the text. This is chosen by the "Port Type" field in the
`"Label Net" wizard.[20]
`
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`File format
`
`LTspice - Wikipedia
`
`Many of the LTspice files are stored as an ASCII text file, which can be viewed or edited with any ASCII text editor
`programs. One of the side benefits of an ASCII file format is that a schematic can be listed in a printed document / book /
`magazine / datasheet / research paper / homework assignment, which allows the reader to recreate LTspice files without
`electronic file distribution.
`
`LTspice filename extensions:[21]
`
`asc - schematic. It consists of a netlist based on SPICE text-based commands.[21]
`asy - electronic symbol shown in a schematic.[21]
`cir - external netlist input.[21]
`fft - FFT binary output.[21]
`lib - model library subcircuits.[22]
`plt - waveform viewer plot settings.[21]
`raw - binary output, optional ASCII output.[21]
`sub - subcircuit.[22]
`lib / sub / mod / model - device model. While any file extension is allowed, users tend to gravitate towards common
`ones.[21]
`
`Example
`The following example can be viewed by copying each into two different text files. For each, copy the text in the gray box
`from this article, paste into an ASCII text editor, saving as a text file. Both files must have the same "base name" and sit in
`the same directory. To see it, opening the "asc" file with LTspice then click the "Run" button inside LTspice software.
`
`LTspice_RC.asc
`LTspice_RC.plt
`
`Schematic file
`LTspice schematics are stored as an ASCII text file with a filename extension of "asc".[21]
`
`The following example shows the contents from a small LTspice schematic file for a simple RC circuit with four schematic
`symbols: V1 is 10 volt DC voltage source, R1 is 1K ohm resistor, C1 is 1 uF capacitor, ground. The bottom three TEXT lines
`are: 1) a transient simulation directive with a stop time parameter of 10 ms (.tran 10mS), 2) a SPICE directive to set the
`initial condition of RC "out" net to zero volts (.ic v(OUT)=0V), and 3) a text comment (title).
`
`Version 4
`SHEET 1 880 680
`WIRE 224 96 128 96
`WIRE 128 160 128 96
`WIRE 224 192 224 176
`WIRE 288 192 224 192
`WIRE 224 208 224 192
`WIRE 128 288 128 240
`WIRE 224 288 224 272
`WIRE 224 288 128 288
`WIRE 224 304 224 288
`FLAG 224 304 0
`FLAG 288 192 OUT
`IOPIN 288 192 Out
`SYMBOL res 208 80 R0
`SYMATTR InstName R1
`SYMATTR Value 1K
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`SYMBOL cap 208 208 R0
`SYMATTR InstName C1
`SYMATTR Value 1uF
`SYMATTR SpiceLine V=50
`SYMBOL voltage 128 144 R0
`WINDOW 123 0 0 Left 0
`WINDOW 39 0 0 Left 0
`WINDOW 0 7 10 Left 2
`WINDOW 3 -20 57 Left 2
`SYMATTR InstName V1
`SYMATTR Value 10V
`TEXT 120 344 Left 2 !.tran 10mS
`TEXT 120 376 Left 2 !.ic v(OUT)=0V
`TEXT 8 72 Left 2 ;RC Circuit - LTspice - Wikipedia
`
`Plot file
`LTspice waveform viewer plot settings are stored as an ASCII text file with a filename extension of "plt".[21] If this
`optional plot file is present, then all plot planes will automatically be displayed after the "Run" button is pressed,
`otherwise the user will need to click on each net to see the waveform(s). To create a plot file on Windows, after a plot
`graph is displayed, right-click on it and choose "File", then choose "Save Plot Settings".[23]
`
`The following example for the above schematic shows settings for a "transient analysis" simulation with two waveforms on
`one plot plane consisting of the RC voltage at "out" net and current through resistor R1, which are labeled V(out) and I(R1)
`at the top of the plot graph.
`
`[Transient Analysis]
`{
` Npanes: 1
` {
` traces: 2 {524290,0,"V(out)"} {34603011,1,"I(R1)"}
` X: ('m',0,0,0.001,0.01)
` Y[0]: (' ',0,0,1,10)
` Y[1]: ('m',0,0,0.001,0.01)
` Volts: (' ',0,0,0,0,1,10)
` Amps: ('m',0,0,0,0,0.001,0.01)
` Log: 0 0 0
` GridStyle: 1
` }
`}
`
`See also
`
`Transistor model
`Diode modelling
`Compact Model Coalition
`Comparison of EDA software
`List of free electronics circuit simulators
`References
`1. "LTspice Genealogy - The Heritage of Simulation Ubiquity" (http://ltwiki.org/index.php?title=LTspice_Genealogy_-_The
`_Heritage_of_Simulation_Ubiquity). LTwiki. Archived (https://web.archive.org/web/20181202213202/http://ltwiki.org/in
`dex.php?title=LTspice_Genealogy_-_The_Heritage_of_Simulation_Ubiquity) from the original on December 2, 2018.
`2. "LTspice" (https://www.analog.com/en/design-center/design-tools-and-calculators/ltspice-simulator.html). Analog
`Devices. Archived (https://web.archive.org/web/20181203022221/https://www.analog.com/en/design-center/design-to
`ols-and-calculators/ltspice-simulator.html) from the original on December 3, 2018.
`
`https://en.wikipedia.org/wiki/LTspice
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`3. "LTspice XVII Introduction" (http://ltwiki.org/LTspiceHelpXVII/LTspiceHelp/html/Introduction.htm). LTwiki. Archived (http
`s://web.archive.org/web/20181202203429/http://ltwiki.org/LTspiceHelpXVII/LTspiceHelp/html/Introduction.htm) from
`the original on December 2, 2018.
`4. Mike Engelhardt: LTspice IV Help → F.A.Q. → License and Distribution. (Help of software version 4.19u of 4
`September 2013)
`5. Mike Engelhardt: LTspice IV Help → Introduction → License Agreement/Disclaimer. (Help of software version 4.19u of
`4 September 2013)
`6. "Linear released LTspice IV for multicore processors" (http://www.eeherald.com/section/new-
`products/np100659.html). EE Herald. February 13, 2009. Archived (https://web.archive.org/web/20181202201907/htt
`p://www.eeherald.com/section/new-products/np100659.html) from the original on December 2, 2018.
`7. "Simulation Command" (http://ltwiki.org/index.php?title=Simulation_Command). LTwiki. Archived (https://web.archive.
`org/web/20190513152950/http://ltwiki.org/index.php?title=Simulation_Command) from the original on May 13, 2019.
`8. "Linear Technology announces SwitcherCAD III a fully functional Spice Simulator for switcher applications" (https://ab
`outspice.com/details-259). AboutSpice.com. May 16, 2001. Archived (https://web.archive.org/web/20181205031754/h
`ttps://aboutspice.com/details-259) from the original on December 4, 2018.
`9. "Third-party Models" (http://ltwiki.org/LTspiceHelpXVII/LTspiceHelp/html/Third_party_Model.htm). LTwiki. Archived (htt
`ps://web.archive.org/web/20190513151147/http://ltwiki.org/LTspiceHelpXVII/LTspiceHelp/html/Third_party_Model.htm)
`from the original on May 13, 2019.
`10. "General Ordering Information" (https://web.archive.org/web/20161003062255/http://cds.linear.com/docs/en/compan
`y/ordering_info.pdf) (PDF). Linear Technology. September 18, 2008. Archived from the original (http://cds.linear.com/
`docs/en/company/ordering_info.pdf) (PDF) on October 3, 2016.
`11. "PCB Netlist Extraction" (http://ltwiki.org/LTspiceHelpXVII/LTspiceHelp/html/PCB_Netlist_Extraction.htm). LTwiki.
`Archived (https://web.archive.org/web/20190513152031/http://ltwiki.org/LTspiceHelpXVII/LTspiceHelp/html/PCB_Netli
`st_Extraction.htm) from the original on May 13, 2019.
`12. news:sci.electronics.cad: LTspice/SwitcherCAD III now runs on Linux (http://groups.google.com/group/sci.electronics.
`cad/msg/79e427857c2c7935) accessdate=September 27, 2013
`13. Pell, Rich (January 13, 2009). "Free SPICE software exploits multicore processors" (http://www.eetimes.com/electroni
`cs-products/analog-products/4109895/Free-SPICE-software-exploits-multicore-processors). EE Times. Retrieved
`January 17, 2011.
`14. news:sci.electronics.cad: Announce: Multi-threaded LTspice (http://groups.google.com/group/sci.electronics.cad/msg/
`160a3397432774d3) accessdate=September 27, 2013
`15. "LTspice IV Is Now Native on Mac OS X" (https://www.evaluationengineering.com/ltspice-iv-is-now-native-on-mac-os-
`x.php). Evaluation Engineering. November 9, 2013.
`16. "LTspice - Control Panel" (http://ltwiki.org/index.php?title=Control_Panel). LTwiki. Archived (https://web.archive.org/we
`b/20181205015627/http://ltwiki.org/index.php?title=Control_Panel) from the original on December 4, 2018.
`17. "LTspice - General Conventions" (http://ltwiki.org/LTspiceHelpXVII/LTspiceHelp/html/GeneralConventions.htm). LTwiki.
`Archived (https://web.archive.org/web/20181205023227/http://ltwiki.org/LTspiceHelpXVII/LTspiceHelp/html/GeneralCo
`nventions.htm) from the original on December 4, 2018.
`18. "Label a node name" (http://ltwiki.org/index.php?title=Label_a_node_name). LTwiki. Archived (https://web.archive.org/
`web/20181209013720/http://ltwiki.org/index.php?title=Label_a_node_name) from the original on December 8, 2018.
`19. "LTspice: Undocumented Shortcuts" (https://www.analog.com/en/technical-articles/ltspice-undocumented-shortcuts.ht
`ml). Analog Devices. Archived (https://web.archive.org/web/20181209013716/https://www.analog.com/en/technical-ar
`ticles/ltspice-undocumented-shortcuts.html) from the original on December 8, 2018.
`20. "Port Type drawing" (http://ltwiki.org/LTspiceHelp/image/porttype.gif). LTwiki. Retrieved December 9, 2018.
`21. What are the different LTspice file types; LTwiki. (http://ltwiki.org/index.php?title=Most_frequently_asked_questions_fo
`r_beginners#What_are_the_different_LTspice_file_types.3F)
`22. Subcircuit structure guide; Audio perfection. (http://www.audio-perfection.com/spice-ltspice/subcircuit-structure.html)
`23. Save Plot Configurations; LTwiki. (http://ltwiki.org/index.php?title=Save_Plot_Configurations)
`
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`Further reading
`
`LTspice - Wikipedia
`
`SPICE Differentiation (http://ltwiki.org/LTspiceHelpXVII/LTspiceHelp/html/English.pdf); Mike Engelhardt; Linear
`Technology; LT Journal of Analog Innovation; 7 pages; January 2015.
`The LTspice IV Simulator: Manual, Methods and Applications; Gilles Brocard; Würth Elektronik; 744 pages; 2013;
`ISBN 978-3899292589. (Table of Contents) (https://www.we-online.com/web/en/index.php/download/media/07_electronic_component
`s/b_cher_brosch_ren_flyer/Simulation_in_LTspice_Extracts.pdf)
`Semiconductor Device Modeling with SPICE; 2nd Ed; Giuseppe Massobrio and Paolo Antognetti; McGraw Hill; 479
`pages; 1993; ISBN 978-0070024694. (Table of Contents) (http://www.gbv.de/dms/ilmenau/toc/123145619.PDF)
`Books with LTspice chapters
`
`Designing Audio Power Amplifiers (http://www.cordellaudio.com/book/); 2nd Ed; Bob Cordell; McGraw Hill; 776
`pages; 2019; ISBN 978-1138555440. (Chapters 23 & 24) (LTspice models) (http://www.cordellaudio.com/book/spice_models.shtml)
`Op-Amp Circuits - Simulations and Experiments (http://www.zapstudio.com/Lab_Book_OAC.htm); 1st Ed; Sid Antoch;
`Zap Studio; 128 pages; 2016; ISBN 978-1935422150.
`
`External links
`
`Analog/Linear
`
`LTspice official website (https://www.analog.com/e
`n/design-center/design-tools-and-calculators/ltspic
`e-simulator.html)
`LTspice Keyboard Shortcuts (https://www.analog.c
`om/media/en/simulation-models/spice-models/LTs
`pice_ShortcutFlyer.pdf), MacOS Shortcuts (https://
`www.analog.com/media/en/simulation-models/spi
`ce-models/LTspiceShortcutsForMacOSX.pdf)
`LTspice Demo Circuit Collection (https://www.anal
`og.com/en/design-center/evaluation-hardware-an
`d-software/lt-spice-demo-circuits.html)
`
`Wiki & User Group
`
`LTwiki (http://ltwiki.org)
`LTspice User Group (https://groups.yahoo.com/ne
`o/groups/LTspice/info)
`
`Tutorials
`
`LTspice IV Getting Started Guide (https://w
`ww.analog.com/media/en/simulation-model
`s/spice-models/LTspiceGettingStartedGuid
`e.pdf) - Analog/Linear
`Introduction to LTspice (https://web.archive.
`org/web/20181222171551/http://faculty.eng
`ineering.asu.edu/eee202lab/wp-content/upl
`oads/2017/01/1_Introduction_to_LTspice.p
`df) - EEE202 - Arizona State University
`More LTspice (https://web.archive.org/web/
`20181222171603/http://faculty.engineering.
`asu.edu/eee202lab/wp-content/uploads/20
`17/01/2_More_LTspice.pdf) - EEE202 -
`Arizona State University
`Introduction to LTSpice XVII (https://forum.
`digikey.com/t/an-introduction-to-ltspice/202
`3) - DigiKey
`Interactive LTSpice Tutorial (http://www.sim
`onbramble.co.uk/lt_spice/ltspice_lt_spice.h
`tm) - Simon Bramble
`
`Other
`
`Audio interview with Mike Engelhardt
`(author of LTspice) (https://theamphour.co
`m/196-an-interview-with-mike-engelhardt-s
`pice-simulator-synteresis/) - (1h32m) - The
`Amp Hour
`
`Retrieved from "https://en.wikipedia.org/w/index.php?title=LTspice&oldid=906138927"
`
`https://en.wikipedia.org/wiki/LTspice
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`LTspice - Wikipedia
`
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