Welcome to Circuit Lab
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RC Filter
Low-pass and high-pass RC filters with auto frequency range, Bode plots, and practical attenuation table.
RC Impulse Analysis
Comprehensive electrical and thermal analysis of RC circuits with step input.
I²t Calculator
Calculate Joule integral for fuse selection and capacitor discharge analysis.
LED Resistor
Calculate current-limiting resistor for LEDs with worst-case analysis and PWM support.
Inductance of Conductors
Geometry-based inductance calculator for wires, loops, and coaxial cables with interactive diagrams.
Track Width Calculator
Calculate minimum PCB trace width using IPC-2221 standard based on current, temperature rise, and copper thickness.