Abstract: An inductor is disclosed, the inductor comprising: a T-shaped magnetic core, being made of a material comprising an annealed soft magnetic metal material and having a base and a pillar integrally formed with the base, wherein ?C×Hsat?1800, where ?C is a permeability of the T-shaped magnetic core, and Hsat (Oe) is a strength of the magnetic field at 80% of ?C0, where ?C0 is the permeability of the T-shaped magnetic core when the strength of the magnetic field is 0.

Abstract: An ultra-wideband antenna for a wireless headphone is provided, which includes a first portion and a second portion. One side of the first portion has at least two slots. The second portion is laterally adjacent to and separated from the first portion. The second portion includes a main body portion and an extension portion, and one side of the main body portion is close to the at least two slots, and another side of the main body portion is connected to the extension portion, in which an included angle between the main body portion and the extension portion is in a range of between 85 degrees and 135 degrees. A wireless headphone including the above-mentioned ultra-wideband antenna is also provided.

Abstract: An ultra-wideband antenna for a wireless headphone is provided, which includes a first portion and a second portion. One side of the first portion has at least two slots. The second portion is laterally adjacent to and separated from the first portion. The second portion includes a main body portion and an extension portion, and one side of the main body portion is close to the at least two slots, and another side of the main body portion is connected to the extension portion, in which an included angle between the main body portion and the extension portion is in a range of between 85 degrees and 135 degrees. A wireless headphone including the above-mentioned ultra-wideband antenna is also provided.

Abstract: A machine includes an electronic control module for conducting authentication process of a banknote and transiting/receiving every module signal to control operation of a user interface; an image control module for activating an image sensor to read and authenticate the banknote upon receipt of a banknote input signal from the electronic control module, thereby resulting in an authenticated result and transmitting back to the electronic control module; a motor control module for causing a corresponding motor operation of a motor upon receipt of a command signal from the electronic control module; and a counterfeit control module for processing a banknote data via a reading head, a thickness detector and an infrared scanner upon receipt of another signal from the electronic control module and generating, transmitting a banknote result back to the electronic control module for further processing.