Patent ID: 9647462
Date: 2017-05-09
CPC Classifications: H02J,H04R

Claim:
1. A hearing instrument comprising: an audio signal source for capturing audio signals; an audio signal processing unit for processing said audio signals; means to be worn at or in a user's ear or to be implanted in a user's head for stimulating a user's hearing according to processed audio signals, and a rechargeable power source, wherein the rechargeable power source is a wound capacitor comprising a charging circuitry and a capacitor foil arrangement which comprises at least a first electrically conducting layer, a second electrically conducting layer and a dielectric layer in-between the first electrically conducting layer and the second electrically conducting layer and which is cylindrically wound in a manner so as to form a cylindrical induction coil for generating a current for wirelessly charging of the capacitor when exposed to an external alternating electromagnetic field generated by a charging device.