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Logo for CircuitLab
Draw, save, simulate and share electrical circuits.   Note, as of August 2013, this resource is no longer free to students. 
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Material Type: Development Tool
Technical Format: Javascript
Date Added to MERLOT: September 03, 2013
Date Modified in MERLOT: August 08, 2016
Submitter: David Shaheen
Keywords: circuit simulation, schematic capture


  • Reviewed by members of Editorial board for inclusion in MERLOT.
    Editor Review (not reviewed)
  • User review 5 average rating
  • User Rating: 5 user rating
  • Discussion (2 Comments)
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Primary Audience: High School, College Lower Division, College Upper Division, Professional
Mobile Compatibility: Not specified at this time
Technical Requirements: HTML5, Javascript, IE10 or later, latest version of Firefox, latest version of Chrome
Language: English
Cost Involved: no
Source Code Available: no
Accessibility Information Available: unsure
Creative Commons: unsure


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Discussion for CircuitLab

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Avatar for Andy Fierman
2 weeks ago

Andy Fierman (Consultant)

I used to use CircuitLab a lot before they started charging a subscription. It is OK and easy to use but is very limited in what can be drawn and simulated. I also helped out on their forums until recently. A more versatile tool I have used much more in the last 3 years is This, like CircuitLab, is a web-based schematic capture and simulation tool but also adds PCB design and - optionally - manufacture. The feature set for all three aspects of schematic capture, (ngspice) simulation and PCB design is much greater than CircuitLab with full schematic symbol and PCB footprint creation and editing and .model and .subckt spice model import and editing. Even better is that is free for a small number of public and an unlimited number of public projects, with no restrictions on access to features and functionality. To give an idea of the strength of this tool, here's an example of one of the projects:
Time spent reviewing site: 4 years

Avatar for David Shaheen
2 weeks ago

David Shaheen (Faculty)

Thanks for the input Andy. I had tried several years ago, but it was very limited. It appears they have substantially improved the platform.
Used in course