Inductive electronic module and use thereof

An inductive electronic module comprising:

• a core element having an inner limb (12;
• 29a) and at least two lateral limbs (14, 16;
• 33a, 35a;
• 37a, 39a) associated with the inner limb on both sides, said core element being provided with windings (N1, N2, N3, N4) for forming a transformer,
• wherein a first winding (N1, N2;
• 47, 49;
• 51, 53) is implemented as a series connection composed of two partial windings, of which the first partial winding is formed on a first lateral limb and a second partial winding is formed on a second lateral limb,
• the first and the second partial windings have a number of turns and a direction of turn which are designed such that a resulting magnetic flow of the first winding is cancelled in the inner limb, and in particular is zero,
• and a second winding (N3;
• 40, 42) is formed on the inner limb,
• wherein, in order to implement a transformer that is magnetically decoupled from the other windings respectively, the first and/or the second windings comprise at least two conductors which can be contacted separately from one another, characterised by a fourth winding (N4) which extends across two lateral limbs provided on both sides of the inner limb.