Electronics calculators

Circuit design helpers for voltage, current, impedance, and component sizing.

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Calculators built for electronics scenarios.

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Computes capacitance for parallel plate capacitors.

Splits current through resistors in a parallel branch.

Estimates inductance for air-core and ferrite-core coils.

Solves for voltage, current, or resistance in DC circuits.

Computes real, reactive, and apparent power with power factor.

Decodes resistor band colors into resistance and tolerance.

Computes output voltage for resistor dividers with load awareness.