Current Divider  Online Calculator
An electric current divider outputs a current that is a fraction of the input current.
A current divider is a linear circuit that produces an output current that is a fraction of the input current.
Current is split between the branches of the divider. The total resistance in the electrical circuit can calculated
R_{T} = R_{1 }R_{2 }/ (R_{1} + R_{2}) (1)
where
R_{T} = total resistance (ohms, Ω)
R_{n} = resistance in branch n (ohms, Ω)
The voltage difference across the circuit
U = I R_{T }
= I R_{1 }R_{2 }/ (R_{1} + R_{2}) (2)
where
U = electrical potential (volts, V)
I = total current through the circuit (amps, A)
Split current I_{1} can be calculated
I_{1} = U / R_{1}
= (I R_{1 }R_{2 }/ (R_{1} + R_{2}) ) / R_{1}
= I _{}R_{2 }/ (R_{1} + R_{2})_{} (3)
Split current I_{2} can be calculated
I_{2} = U / R_{2}
= (I R_{1 }R_{2 }/ (R_{1} + R_{2}) ) / R_{2}
= I R_{1 }/ (R_{1} + R_{2}) (4)
Example  Current Divider
The total resistance in a current divider with supply voltage 3.3 V and resistor R_{1} = 220 ohm and resistor R_{2} = 47 ohm can be calculated as
R_{T} = (220 ohm) (47 ohm) / ((220 ohm) + (47 ohm))
= 38.7 ohm
The total current through the current divider can be calculated
I_{} = (3.3 V) / (38.7 ohm)
= 0.085 amps
= 85 mA
The current through resistor R_{1} can be calculated
I_{1} = (3.3 V) / (220 ohm)_{}
= 0.015 amps
= 15 mA
The current through resistor R_{2} can be calculated
I_{2} = (3.3 V) / (47 ohm)
= 0.070 amps
= 70 mA
Current Divider  Online Calculator
R  total resistance (ohms)
I_{1}  split current (amps)
I_{2}  split current (amps)
I  total current (amps)
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