Electrical / Electronics
Ohm's law resistance
Calculates resistance from voltage and current in a DC circuit.
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Calculates the total resistance of resistors connected in series.
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Calculates the total resistance of resistors connected in parallel.
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Calculates DC power from current and resistance.
DC power from voltage and resistance
Calculates DC power from voltage and resistance.
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.