US 6,075,433 A · Power supply unit

Abstract

The present invention relates to a non-contact type power supply unit intended for use in electronic equipment, aiming at the realization of a small size and low cost and successful achievement in an enhanced capability of electric power transmission. In order to achieve the foregoing objectives, the non-contact type power supply unit comprises a primary coil(11) that is fed with pulsated currents, a secondary coil(13) mounted opposite to the primary coil(11) in an enclosure that is different from an enclosure wherein the primary coil(11) is mounted, whereby electric power is transferred from the primary coil(11) to the secondary coil(13) and wherein a ferrite core(12) is disposed so as to extend from the primary coil(11) towards the secondary coil(13), thus achieving efficient electric power transmission from the primary coil(11) to secondary coil(13).

Claims4

Dependent claims

A non-contact power supply unit having a primary coil to be fed with high frequency currents;

and a secondary coil mounted opposite to said primary coil in an enclosure that is different from an enclosure wherein said primary coil is mounted, whereby electric power is transferred from said primary coil to said secondary coil;
a ferrite core extending from said primary coil to said secondary coil, and a tertiary coil provided on said ferrite core at a place where said ferrite core is not surrounded by said primary coil.

Dependencies are inferred from the claim text.

Power supply unit

Life of this patent

Power supply unit

Life of this patent

Abstract

Claims4