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Engineering

Explore electrical quantities, gear ratios and other technical relationships. The simplified models support learning and initial checks.

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6 calculators

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6 calculators available.

EngineeringOhm’s law calculatorCalculate current and power from a DC voltage and an ideal ohmic resistance.

EngineeringElectric power from volts and ampsCalculate electric power from voltage and current for a DC circuit.

EngineeringCapacitor charge and energyCalculate the charge and electrical energy stored in an ideal capacitor.

EngineeringRC time constant and capacitor chargingCalculate capacitor voltage, charging current and the time constant after an ideal RC circuit is switched on.

EngineeringRL time constant and current riseFind the current rise in an ideal series circuit containing resistance and inductance.

EngineeringIdeal transformer calculatorCalculate the secondary voltage and corresponding primary current from the turns counts and secondary load.