Partial core, low frequency transformer

摘要

A transformer (1) which is designed to operate in the low frequency range (30-300 Hz) at a primary voltage at the order of 100V or above; the transformer (1) includes primary winding (3), secondary winding (4) and a partial core (2); the primary and secondary windings are of electrically conductive material and are configured so that they at least partially surround the partial core (2); the primary and secondary windings are electrically insulated both from each other and from the partial core (2) and are arranged such that a magnetic flux generated by the application of an alternating current to one of the windings links the other winding and induces a voltage therein; the partial core is made of ferromagnetic material and does not form a closed continuous magnetic path.