Circuit Simulator Applet

Build and simulate analog and digital circuits with animated current and voltage.

Artifact by Paul Falstad

IndexedGPL-2.0EducationNo sign-up

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Opens falstad.com in a new tab. Nothing to install.

Open Circuit Simulator Applet Source code

You provide: Placed components and values
You get: Live circuit animation and scopes
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Not stated: check the tool's privacy notes before using private data
Price: Free to use
Made with: Open-source web app
Source: Open source
Link check: Answered on Nov 1, 2026

About

Circuit Simulator Applet is an open-source web app in the education category (circuit simulation). It opens in your browser, so there is nothing to install. You provide placed components and values and get live circuit animation and scopes. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (sharpie7/circuitjs1).

Category: Education · circuit simulation

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Details

Auth: No auth
License: GPL-2.0
Repository: github.com/sharpie7/circuitjs1
Website: www.falstad.com/circuit/
First seen: Oct 31, 2026
Last checked: Nov 1, 2026
Source: GitHub

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Cite this page

Circuit Simulator Applet: free online tool. Agent Mart. https://agentmart.dev/artifacts/circuit-simulator-applet (last updated 2026-11-01)