CircuitMath — Free Circuit Analysis Tool
CircuitMath is a free online tool for ECE students to analyze circuits and generate KVL, KCL, and MNA equations in LaTeX.
Features
- Drag-and-drop schematic editor with resistors, capacitors, inductors, voltage/current sources
- Dependent sources: VCVS, VCCS, CCVS, CCCS for small-signal modeling
- NPN/PNP BJT and NMOS/PMOS transistor support with automatic small-signal substitution
- KCL (nodal analysis), KVL (mesh analysis), MNA matrix equations
- Transfer function / voltage gain computation: H(s) = Vout/Vin
- LaTeX output — copy equations directly into homework or papers
- Circuit templates: voltage divider, RC/RLC filters, CE/CS amplifiers, cascode circuits
Common Use Cases
CE amplifier voltage gain, common-source amplifier transfer function, RC low-pass filter H(s), voltage divider equation, Wheatstone bridge analysis, BJT small-signal model, MOSFET small-signal model, cascode amplifier gain.
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