Electrical / Electronics
Ohm's law voltage
Calculates voltage from current and resistance in a DC circuit.
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DC electrical power
Calculates DC electrical power from voltage and current.
DC power from current and resistance
Calculates DC power from current and resistance.
DC power from voltage and resistance
Calculates DC power from voltage and resistance.
Joule heating
Calculates energy dissipated in resistance from current and time.
LED resistor calculator
Calculates resistance and resistor power for an LED current limiting resistor.
LED series resistor
Calculates a current limiting resistor for multiple LEDs connected in series.