Circ AI

Introduction

Circ AI is a browser-based AI circuit design tool that turns plain-English descriptions into schematics and SPICE netlists, then runs ngspice in the browser for transient, AC and DC sweep analysis. You can save cutoff and gain targets with tolerances and have them checked against simulation results, bring your own SPICE netlist, and export an editable KiCad schematic or the raw netlist.

Screenshots

Features

• Generate circuits & SPICE netlists from plain-English descriptions
• Run ngspice simulations (.tran/.ac/.dc) in-browser with waveform inspection
• Save cutoff and gain targets with tolerance checks against AC results
• Built-in examples ready to use without consuming AI credits
• Import your own SPICE netlist by paste or drag & drop (.cir/.spice)
• Conversational iteration such as "increase the gain by 6dB"
• Export editable KiCad schematics or the raw SPICE netlist
• Fully browser-based with no installation, plus PDF report download