SDG Electronics

Current divider and meter shunt

Current divider and meter shunt with explicit circuit assumptions and worked equations.

Development preview. Check the assumptions below before relying on a result. Calculations run in your browser.

Loading calculator…

How it calculates

Branch current: Ii = Itotal (1/Ri)/Σ(1/R)

Assumptions

  • All branches share the same two nodes. Signed currents follow the entered total-current direction.

Worked example

These are the calculator's default inputs. Change any input above to recalculate.

Inputs

Mode
branches
Parallel resistances
100, 200, 300 Ω
Total input current
0.01 A
Meter resistance
1000 Ω
Meter full-scale current
0.001 A
Desired full-scale current
1 A

Results

Equivalent resistance
54.5455 Ω
Common voltage
0.545455 V
Meter shunt
Meter mode only Ω
Total dissipation
0.00545455 W

All electronics calculators