LED resistor power

Calculates resistance and resistor power for an LED current limiting resistor.

Calculates a current limiting resistor for multiple LEDs connected in series.

Calculates DC power from current and resistance.

Calculates a base resistor for simplified BJT transistor drive.

Calculates branch currents in an ideal two-resistor current divider.

Calculates diode power loss from constant forward voltage and average current or conduction current with duty cycle.