AuMi
EI Core Transformer Designer

EI Core Transformer Design Tool

Select your bobbin, set the stack width, enter winding voltages and powers — get turns, wire gauges, and window utilisation instantly.

1

Select Bobbin / EI Core

2

Stack Width

Selected: —
3

Winding Parameters

50 Hz
60 Hz
Primary Winding
V
W
T
A/mm²
%
%

Select a core, set the stack width, enter winding parameters and click Calculate Design to see the full transformer specification.