NL5 Circuit Simulator
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NL5 News



NL5 version 2.2 released
April 21, 2016

NL5 version 2.2 has been released. Use a new trace type, Math, to post-process simulation data. Download latest version of NL5 here.


NL5 version 2.1 released
February 1, 2016

NL5 version 2.1 has been released. Get data from oscilloscope, build your DLL automatically with Microsoft Visual C++, display digital and bus signals, try new components and models, and much more. Download latest version of NL5 here.


NL5 to be presented at APEC 2016
August 10, 2015

Meet us at Applied Power Electronics Conference and Exposition APEC 2016 in Long Beach, CA, March 21-23, 2016 (booth 1163).


Frequently Asked Questions page is available
April 19, 2014

A new Frequently Asked Questions page is available. Have a problem? Check FAQ page first. Don't see what you need? Submit your question here, send us an e-mail to nl5@sidelinesoft.com, or post your question at NL5 forum.


NL5 version 2.0 released
January 14, 2014

NL5 version 2.0 has been released. Many changes in C language and script: new data types, operators, and functions. Download latest version of NL5 here.


NL5 to be presented at APEC 2014
December 7, 2013

Meet us at Applied Power Electronics Conference and Exposition APEC 2014 in Fort Worth, TX, March 17-19, 2014 (booth 709).


NL5 to be presented at ECCE 2013
August 13, 2013

Meet us at IEEE Energy Conversion Congress and Exposition ECCE 2013 in Denver, CO, September 16-17 (booth 115). Enjoy Colorful Colorado: home of NL5!


ideal-Z - simple impedance calculator
February 8, 2013

Try ideal-Z: a simple impedance calculator with graphical schematic entry. Just drop components onto the schematic, connect them, set values, and the impedance is calculated instantaneously.


NL5 version 1.9 released
December 12, 2012

NL5 version 1.9 has been released. Try a new method of low signal AC analysis for switching circuits: Z-transform. Download latest version of NL5 here.


idealCircuit released
June 9, 2012

idealCircuit uses the same algorithm as NL5. However, it is simplified as much as possible: very simple and intuitive interface, less components and models, no fancy and powerful features. idealCircuit is free, no license needed.


NL5 version 1.8 released
February 1, 2012

NL5 version 1.8 has been released. Less bugs, more tools, models, and features. Download latest version of NL5 here.


NL5 Circuit Simulator on Facebook
July 29, 2011

Visit NL5 on Facebook: read latest news, recommend NL5 to your colleagues, share with friends, just "like" it!


NL5 to be presented at ECCE 2011
July 23, 2011

Meet us at IEEE Energy Conversion Congress and Exposition ECCE 2011 in Phoenix, AZ, September 19-20 (booth 401). Dive into smart technology with a smart tool!


NL5 version 1.7 released
April 30, 2011

NL5 version 1.7 has been released. As always, a lot of new components, models, features, and improvements. Students special: see what\'s inside transmission line. Watch NL5 Demo video on YouTube; more tutorial topics are coming soon. Download latest version of NL5 here


APEC 2011 special offers
February 20, 2011

We are happy to offer great APEC 2011-special discounts, and give away NL5 Single PC License! Offers are valid through March 13, 2011.


NL5 version 1.6 released
November 1, 2010

NL5 version 1.6 has been released. More features and components, less bugs. Visit the download page to get the latest version of NL5.


NL5 version 1.5 released
April 20, 2010

NL5 version 1.5 has been released. Power engineers special: calculate Power Factor and THD; use bridge rectifier component to make you schematic look nicer. Visit the download page to get the latest version of NL5.


NL5 version 1.4 released
January 11, 2010

NL5 version 1.4 has been released. Enjoy thyristor, soft reverse recovery diode, and many other features. Look forward to see even more in the following builds. Visit the download page to get the latest version of NL5.


NL5 to be presented at APEC 2010
December 17, 2009

Meet us at Applied Power Electronics Conference and Exposition APEC 2010 in Palm Springs, CA, February 22-24, 2010 (booth 333). Recover from the recession with a new simulation tool!


NL5 version 1.3 released
September 9, 2009

NL5 version 1.3 has been released. It finalized many significant improvements and additions introduced in several builds of version 1.2. Watch upcoming builds for more great features: the NL5 "to-do list" is getting longer following rapidly growing interest in NL5.


NL5 User\'s Manual in Russian now available
August 22, 2009

Обновленное Руководство Пользователя NL5 на русском языке доступно для загрузки здесь.


Microsoft security update 896358 issues
August 9, 2009

A new problem related to Microsoft security updates has been discovered: an error while opening Help file after installing security update 896358. A quick resolution is:

  • Right-click the nl5.chm file, and then click Properties
  • Click Unblock
Alternately, see Microsoft Help and Support topic 902225 External link for other solutions and more details.


NL5 Network License available
July 25, 2009

The NL5 Network License provides full functionality on an unlimited number of PCs connected to the NL5 License Server through the network. Network License is offered for FREE to educational institutions, both for educational purposes and research. Contact us for technical details and pricing for companies and individual users.


NL5 to be presented at ECCE 2009
June 28, 2009

Meet us at IEEE Energy Conversion Congress and Exposition ECCE 2009 in San Jose, CA, September 21-23, 2009 (booth 34). See NL5 in action, ask questions, discuss your simulation problems, and get them solved with NL5.


NL5 version 1.2 released
June 28, 2009

NL5 revision 1.2 has been released. It has many new components, models, and features available, including direct data exchange with external applications through HTTP link, C-block with custom code written on C language or using DLL, Undo/Redo of schematic editing, and much more. As always, some critical bugs are fixed, and noticeable improvements of the algorithm have been made. Please see details in the updated Manual.


NL5 version 1.1 released
March 9, 2009

Version 1.1 has been released. Demo version is fully functional, except a limited number of components in the schematic (20). Several new components, models, and features have been added. Reminder to NL4 users: NL4 schematic files will not be supported in the next revision. Please convert all old files to the NL5 format.


NL5 version 1.0 released
January 1, 2009

Version 1.0 has finally been released. Without license, NL5 operates as a Demo version with limited functionality. Order a 30 day free trial license or buy a permanent license at nl5.sidelinesoft.com (will be available soon).


NL5 Manual available
October 19, 2008

The NL5 Manual is now available for download as part of NL5 version 0.4 build 9. It is also available for download separately. Download the latest release of NL5 and the Manual here.


NL5 Version 0.4 Released
April 8, 2008

Version 0.4 of NL5 has been released. This is the last revision before the official release. Since no major changes are expected until then, the trial period has been extended to 90 days. However, you are encouraged to check for new updates periodically and always use the latest build. Visit the download page to get the latest version of NL5.


NL5 Version 0.3 Released
October 28, 2007

Version 0.3 build 1 has been released. Download the latest release of NL5 to renew your 45-day trial license.


NL5 Version 0.2 Released
August 10, 2007

Version 0.2 build 1 has been released. Frequency domain response ("AC") analysis is now available. Download the latest update of NL5 to renew your 45-day trial license.


NL5 Version 0.1 Released
May 5, 2007

Version 0.1 build 1 has been released. Download the latest update of NL5 to renew your 45-day trial license.


Broken Microsoft® Security Updates Cause Issues
April 3, 2007

After installing Microsoft® Security Updates 925902 External link and 928843 External link (MS07-017 and MS07-008, issued on February 13 and April 3, respectively), some programs, including NL5, don\'t start and will display the following error message. To fix the problem, Microsoft® has issued a patch External link for this update. We apologise for any inconvenience that these vitiated MS® Security Updates may have caused!


NL5 Beta Released!
March 22, 2007

The first long–awaited publicly available beta version of NL5 has been released. It will be updated and polished during the next several months, culminating in an as–of–yet unannounced official release. Check out the Download page to try out the latest version of NL5!

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