Patent ID: 8766759

Claim:
A transformer, comprising: a circuit board including an installation zone, a plurality of electric conduction holes formed on the installation zone and at least one power connection wire bridging any two of the plurality of electric conduction holes to form electric conduction; an iron core which is located on the circuit board and includes a first winding section and a second winding section located on the installation zone; a winding set being formed by winding a conductive wire in multiple turns on the first winding section of the iron core; and a plurality of magnetic conduction elements each including a connecting section located on the second winding section and an input section and an output section connecting to the connecting section and inserting into the electric conduction holes; wherein the output section of one magnetic conduction element is connected to the input section of another magnetic conduction element via the power connection wire such that the magnetic conduction elements and the power connection wire form a single magnetic conduction winding set which generates magnetic coupling with the winding set through the iron core, and wherein the magnetic conduction elements are arranged in a density lower than that of the multiple turns formed by the conductive wire of the winding set.