Abstract: Disclosed is an inductor, including a magnetic core, a first inner coil and a first outer coil. The magnetic core includes a first base, a magnetic cover, a first center pillar and a first side wall. The first center pillar and the first side wall extend from the first base towards the magnetic cover. The first inner coil surrounds the first center pillar. The first outer coil surrounds the first center pillar. The first inner coil is wound between the first outer coil and the first center pillar. In the inductor, both the first inner coil and the first outer coil are wound around the first center pillar, thereby reducing the overall height of the magnetic core, which is convenient for users to design and use.

Abstract: Disclosed is a transformer, including a first resonance coil, a primary coil, a secondary coil, a second resonance coil, and a magnetic core which includes a first base, a second base, a third base, a magnetic cover, a first center pillar, a second center pillar, a third center pillar, a fourth center pillar, a fifth center pillar, and a sixth center pillar. The first and second center pillars extend from the first base towards the second base. The third and fourth center pillars extend from the second base towards the third base. The fifth and sixth center pillars extend from the third base towards the magnetic cover. The first resonance coil surrounds the first and second center pillars. The primary coil surrounds the third and fourth center pillars. The secondary coil surrounds the third and fourth center pillars. The second resonance coil surrounds the fifth and sixth center pillars.

Abstract: A magnetic device includes a base plate, a cover plate, a first winding column, a second winding column, a primary winding, a secondary winding and a supporting column. The base plate, having a first concave portion, is opposite to the cover plate. The first winding column and the second winding column are disposed between the bottom plate and the cover plate, respectively. The primary winding and the secondary winding are wound around the first winding column and the second winding column. The supporting column is disposed between the base plate and the cover plate. A first concave portion concaves from a first side of the base plate towards the first winding column and the second winding column along multiple directions. The primary winding and the secondary winding are wound and stacking along an extension direction of the first winding column and the second winding column.

Abstract: A key structure is stacked on a display panel. The key structure includes a trigger plate, a frame, at least an elastic triggering member, and at least a key. The trigger plate is formed with at least a hollow area for the display panel to partially expose and a solid area. The frame is disposed on the trigger plate and is formed with at least an opening opposite the hollow area. The key includes a key cap and a scissor member connected to the key cap, wherein the key cap has a cap body which is located in the opening and helps directly observing the hollow area and at least two skirts which extend from sides of the cap body and are covered by the frame.

Abstract: An inductor device including a frame portion, a first winding set, a second winding set and a first common magnetic core I piece is provided. The first winding set, the second winding set and the first common magnetic core I piece are disposed in the frame portion. The first common magnetic core I piece substantially connects the first winding set and the second winding set and the frame portion. The material of the two winding sets is different from that of the first common magnetic core I piece.

Abstract: A key structure is stacked on a display panel. The key structure includes a trigger plate, a frame, at least an elastic triggering member, and at least a key. The trigger plate is formed with at least a hollow area for the display panel to partially expose and a solid area. The frame is disposed on the trigger plate and is formed with at least an opening opposite the hollow area. The key includes a key cap and a scissor member connected to the key cap, wherein the key cap has a cap body which is located in the opening and helps directly observing the hollow area and at least two skirts which extend from sides of the cap body and are covered by the frame.