Abstract: A common mode choke EMI filter of an LED driver includes a holding structure, a plurality of winding magnetic cores, a first coil and a second coil. The holding structure has a plurality of holding spaces and a plurality of conductive pins. The winding magnetic cores are held in the holding spaces, and have respectively a first axle and a second axle. The first coil is wound on the first axles and straddles across different winding magnetic cores, and the second coil is wound on the second axles and straddles across other different winding magnetic cores. The holding structure includes a plurality of seats coupled in a juxtaposed manner through the first and second coils. By winding the first and second coils with greater length or diameter on the first and second axles of the winding magnetic cores, greater power or current adopted on a filter can be enhanced.

Abstract: The current invention discloses a filter for large current applications. The filter comprises a metal frame including a rectangular member and a central, transverse shaft; a cylinder formed by two half cylindrical members around the shaft, the cylinder including a first winding space and a second winding space; a winding formed by coiling wire around the first and the second winding spaces; and a base including a top recess for receiving a bottom of the metal frame. The invention can increase winding space due to the unique design of the metal frame and the cylinder. Moreover, a simple winding is effected.

Abstract: The present invention discloses a wave filter assembly which is applicable to large current and comprises a core 20, a first groove base 21, a second groove base 22, a coil 23 and a base 24; wherein the core 20 includes a first axle section 201 and a second axle section 202; the first and second groove bases 21, 22 are disposed at the first and second axle sections 201, 202 respectively; the first and second groove bases 21, 22 are coiled with the coil 23; the base 24 includes an accommodating groove 240 for accommodating the coil 23. With the design of the separate first groove base 21 and second groove base 22, the coiling space is increased, and thus the wave filter assembly of the invention is applicable to large current and has the effect of facilitating the coiling.

Abstract: The current invention discloses a filter for large current applications. The filter comprises a rectangular metal frame including a first shaft at one side and a parallel second shaft at the other side, a first cylinder including two half cylinders coupled together to sleeve on the first shaft, a second cylinder including two half cylinders coupled together to sleeve on the second shaft, a winding formed by coiling wire around the first and the second cylinders, and a base for supporting the metal frame. The invention can increase winding space due to the provision of separate first and second cylinders. Moreover, a simple winding is effected.

Abstract: A dynamic display ornament includes at least one transparent display device, each display device holding a liquid and having a top opening and a bottom air inlet,a box-like base which supports the at least one transparent display device, at least one projection lamp mounted inside the base and controlled to project light vertically through the bottom side of each of the at least one transparent display device, and air pump means mounted inside the base and controlled to pump air into the air inlet at the bottom side of each of the at least one display device, causing bubbles to be produced in the liquid in each display device.