Current-Loop Voltage Budget

Enter total resistance for both cable conductors. Use device data at the required current; calculated drops assume that current flows. If the budget is insufficient, actual operating current is not predicted.

Convert a measured current to an engineering value

Inputs

Available supply voltage (V)

Transmitter minimum operating voltage (V)

Required loop current (mA)

Total receiver resistance (Ω)

Total outgoing and return wire resistance (Ω)

Other series voltage drops at this current (V)

Results

Enter inputs and click calculate to see the result.

References

NI: Current-loop system design and power supply selectionSource accessed 2026-09-08

Current-Loop Voltage Budget

Calculation Steps

References