CALCULATORS / ELECTRICAL

DC and basic AC circuits

Ideal or parameterized lumped components.

LIVE / CALCULATOR

Ohm's law calculator

two of voltage, current and resistance → remaining quantity, power

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LIVE / CALCULATOR

Series and parallel resistance calculator

resistor values, connection pattern → equivalent resistance, tolerance bounds

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LIVE / CALCULATOR

Loaded voltage divider calculator

resistors, input voltage, load impedance → output voltage, loading error, current

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LIVE / SIZING CALCULATOR

LED series-resistor sizing calculator

supply and forward-voltage bounds, target current, resistor tolerance → resistance range, current bounds, resistor power

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LIVE / CALCULATOR

RC timing and charging calculator

resistance, capacitance, initial/final voltages → time constant, charge curve, threshold time

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LIVE / CALCULATOR

RL current transient calculator

resistance, inductance, source, initial current → current rise/decay, stored energy

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LIVE / CALCULATOR

RLC resonance and damping calculator

R, L, C, topology → resonant frequency, damping, bandwidth

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LIVE / CALCULATOR

Complex AC impedance calculator

frequency, component values, topology → impedance magnitude and phase

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LIVE / CALCULATOR

AC real, reactive and apparent power calculator

RMS voltage/current, phase or power factor → P, Q, S, power factor

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LIVE / CALCULATOR

Balanced three-phase power calculator

line voltage, current, connection, power factor → power, phase/line relationships

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LIVE / CALCULATOR

Capacitor ripple and droop calculator

current waveform, capacitance, ESR, frequency → voltage ripple, RMS current, ESR heating

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LIVE / ESTIMATOR

Resistor power and derating screening calculator

voltage/current range, resistance, ambient, cited derating curve → dissipation range, selected-rating utilization

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LIVE / ESTIMATOR

Zener shunt-regulator screening calculator

input range, load, zener voltage/current bounds → series resistor, zener and resistor dissipation

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