Square voltage impulse applied to the transformer.

**Problem Type:**

A plane problem of transient magnetics.

**Geometry:**

**Given:**

Magnetic permeability of the steel core *μ* = 500;

Conductivity of the steel core *g* = 0 S/m (the core is laminated);

Magnetic permeability of the windings *μ* = 1;

Conductivity of the windings (copper) *g* = 56,000,000 S/m;

Number of turns of the primary winding *w _{1}* = 20;

Number of turns of the secondary winding

Number of turns of the third winding

Pulse voltage

Impulse time t = 0.1 s.

**Problem:**

Calculate the currents in the secondary winding.

**Solution:**

Due to model symmetry we leave the upper half of the transformer only. Therefore we should reduce the circuit elements' values by two.

**Results:**

See the *TECircuit2.pbm* problem in the Examples folder.