Abstract: The network filtering circuit includes a cable side for connection with a network cable, a physical side for connection with a mother board, and a plurality of transmission channels connected between the cable side and the physical side. Each of the transmission channels includes a first transmission line and a second transmission line with a CMC linked therebetween.

Abstract: A method for making a magnetic assembly comprises the following steps: twisting a first to eighth magnetic wires to form a bundle of wires having a first end and an opposite second end; providing a magnetic core; winding the bundle of magnetic wires around the magnetic core; sorting the first end and the second end of the bundle of wires to form individual first ends and individual second ends of the first to eighth wires; picking out the second ends of the first wire and the second wire, and the first ends of the third wire and the fourth wire to form a center tap of a primary coil of a transformer; and picking out the second ends of the fifth wire and the sixth wire, and the first ends of the seventh wire and the eighth wire to form a center tap of a secondary coil of the transformer.

Abstract: An electrical connector comprises a housing including a plug-receiving receptacle, a set of mating contacts each having a mating portion extending in the plug-receiving receptacle and a first connecting portion, a set of mounting contacts each having a second connecting portion, an insulative carrier having opposed front and rear walls and a receiving chamber, and a set of magnetic components each having a magnetic core received in the receiving chamber and a number of conductive wires winding therearound. The mating contacts are held by a bottom section of the front wall, and the mounting contacts are held by a bottom section of the rear wall. Each conductive wire has a first end connecting with the first connecting portion of the mating contact and an opposite second end connecting with the second connecting portion of the mounting contact. The electrical distance from the mating contacts to the mother board is reduced.

Abstract: A printed circuit board assembly includes a printed circuit board, a number of electronic components mounted thereon, and a number of conductive traces electrically connecting the components to form a number of transmission channels. Each of the channels has first and second transmission routes for transmitting differential signals. Each channel includes a common mode choke, a pair of capacitors, and an autotransformer. The common mode choke includes a first coil series connection with the first transmission route and a second coil series connection with the second transmission route. The capacitors include a first capacitor series connection with the first transmitting route and a second capacitor series connection with the second transmitting route.

Abstract: The network filtering circuit includes a cable side for connection with a network cable, a physical side for connection with a mother board, and a plurality of transmission channels connected between the cable side and the physical side. Each of the transmission channels includes an isolation transformer with a primary coil connected with the cable side and a secondary coil coupling with the primary coil. A common mode choke has two first ends connected to the physical side and two opposite second ends. A pair of capacitors series connection with the corresponding second ends and are connected between the secondary coil and the common mode choke. The primary coil has a first center tap directly connected to a ground node.

Abstract: A modular jack has a magnetic assembly including insulative body, two rows of terminals retained to the insulative body, four transformers, and four common mode chokes. Each of the transformer and common mode choke includes a magnetic core and a plurality of conductive wires wound therearound. Each terminal has a recess for receiving an end portions of a corresponding wire and then the terminal is inserted into a through-hole of an internal printed circuit board for dip soldering. Guiding of the wire to the recess can be automated in contrast to manual winding operation.

Abstract: An electrical connector comprises a housing including a plug-receiving receptacle, a set of mating contacts each having a mating portion extending in the plug-receiving receptacle and a first connecting portion, a set of mounting contacts each having a second connecting portion, an insulative carrier having opposed front and rear walls and a receiving chamber, and a set of magnetic components each having a magnetic core received in the receiving chamber and a number of conductive wires winding therearound. The mating contacts are held by a bottom section of the front wall, and the mounting contacts are held by a bottom section of the rear wall. Each conductive wire has a first end connecting with the first connecting portion of the mating contact and an opposite second end connecting with the second connecting portion of the mounting contact. The electrical distance from the mating contacts to the mother board is reduced.

Abstract: A magnetic element (100) includes a board unit (2) including a paddle board (21) having a row of first conductive vias (251) and a row of second conductive vias (252) for insertion of terminals (3), a number of embedded magnetic components (22), and a number of SMDs (surface mount devices) (23) mounted on the paddle board by SMT (surface mount technology). Each embedded magnetic component includes a magnetic core (221) embedded in the paddle board, and a number of PCB (printed circuit board) layout traces (222) disposed in the paddle board. Each PCB layout trace includes a first PCB layout trace (222a) encircling around the magnetic core and connecting with the first conductive via, and a second PCB layout trace (222b) encircling around the magnetic core and connecting with the SMD.

Abstract: A modular jack has a magnetic assembly including insulative body, two rows of terminals retained to the insulative body, four transformers, and four common mode chokes. Each of the transformer and common mode choke includes a magnetic core and a plurality of conductive wires wound therearound. Each terminal has a recess for receiving an end portions of a corresponding wire and then the terminal is inserted into a through-hole of an internal printed circuit board for dip soldering. Guiding of the wire to the recess can be automated in contrast to manual winding operation.

Abstract: A modular jack includes an insulative housing and an insert module mounted from the mounting port to the insulative housing along a back-to-front direction. The insulative housing defines a lower port, an upper port stacked on the lower port, and a mounting port located behind the lower and upper ports. Each of the lower and upper ports is used for mating with a modular plug connector. The insert module comprises a printed circuit broad assembly (PCBA) disposed horizontally in the mounting port and a terminal module located below the PCBA. The PCBA includes a top face, a bottom face, a set of upper contacts each having an upper contacting portion extending in the upper port, a set of lower contacts each having a lower contacting portion extending in the lower port, and a plurality of isolation transformers mounted on the top and bottom faces.

Abstract: A method for making a magnetic assembly comprises the following steps: twisting a first to eighth magnetic wires to form a bundle of wires having a first end and an opposite second end; providing a magnetic core; winding the bundle of magnetic wires around the magnetic core; sorting the first end and the second end of the bundle of wires to form individual first ends and individual second ends of the first to eighth wires; picking out the second ends of the first wire and the second wire, and the first ends of the third wire and the fourth wire to form a centre tap of a primary coil of a transformer; and picking out the second ends of the fifth wire and the sixth wire, and the first ends of the seventh wire and the eighth wire to form a centre tap of a secondary coil of the transformer.

Abstract: A magnetics assembly (100) including a transformer (1) made of litz wire. The transformer includes a toroid core (2) and a bundle of wires (3) winding around the toroid core. The bundle of wires includes first to eighth wires, and has a central portion with all eight wires twisted together and winding around the toroid core. First and second ends of the bundle of wires oppositely extend out from the toroidal core. The ends of the first to eighth wires are connected to form a primary and a secondary coils of the transformer, wherein the second ends of the first wire and the second wire, and the first ends of the third wire and the fourth wire are sorted out to form central taps (35, 36) of the primary and secondary coils, respectively.

Abstract: An electrical connector has a circuit comprising a first side; a second side; a first differential channel located between the first side and the second side and comprising a first positive differential trace and a first negative differential trace for transmitting first differential signal; a second differential channel located between the first side and the second side comprising a second positive differential trace and a second negative differential trace for transmitting second differential signal; and a plurality of mating contacts connected to the second side and comprising a first contact connected to the first positive differential trace, a second contact connected to the first negative differential trace, a third contact connected to the second positive differential trace and a sixth contact connected to the second negative differential trace, the first contact, the second contact, the third second and the sixth contact are arranged one by one.

Abstract: A circuit board (100) includes a first shielding layer (20) extending horizontally, an accessorial shielding layer, a signal circuit layer (3) positioned between the first shielding layer and the accessorial shielding layer, and a circumferential shielding layer (6) surrounding the circuit board and electrically connecting with the first shielding layer and the accessorial shielding layer to improve shielding effect.

Abstract: An electrical connector (100) includes an insulative housing (11), a terminal module received in the insulative housing and a shielding shell (17) enclosing the insulative housing. The terminal module having an inner circuit board (130) and a number of magnetic coils (132). The inner circuit board defines a groove (1300). Each of magnetic coils includes a core and a number of wires wound on the core and electrically connected with the inner circuit board. Each magnetic coil is at least partially received in the groove to save space for reducing profile of the connector.

Abstract: An electrical connector has a circuit comprising a first side; a second side; a first differential channel located between the first side and the second side and comprising a first positive differential trace and a first negative differential trace for transmitting first differential signal; a second differential channel located between the first side and the second side comprising a second positive differential trace and a second negative differential trace for transmitting second differential signal; and a plurality of mating contacts connected to the second side and comprising a first contact connected to the first positive differential trace, a second contact connected to the first negative differential trace, a third contact connected to the second positive differential trace and a sixth contact connected to the second negative differential trace, the first contact, the second contact, the third second and the sixth contact are arranged one by one.

Abstract: A transformer (100) includes a bar-shaped core (5), a number of coils (7) comprising a first winding group (71, 72) and a second winding group (73, 74) wound around the core, a housing (1) receiving the core and the coils, and a number of conductive terminals (3) being secured in the housing. The first winding group and the second winding group wound around different parts of the core. The coils are soldered to the conductive terminals (3). The coils (7) are wound around the core automatically by an automatic winder. Therefore, the cost of manufacturing the transformer is decreased.

Abstract: A modular jack circuit (100) is diposed between a cable side (10) for connecting with a mating plug and a physical side (20) for connecting with a mother board. The moular jack circuit comprises a first transmitting channel and a second transmitting channel. The moular jack circuit includes a number of filtering electronic elements (2, 3) and a number of relays (1, 4) disposed between the filtering electronic elements and the cable side. The first and second transmitting channels share the filtering electronic elements. The relays control the filtering electronic elements to transmit signals for the first and second channels at different times.

Abstract: A magnetics assembly (100) including a transformer (1) made of litz wire. The transformer includes a toroid core (2) and a bundle of wires (3) winding around the toroid core. The bundle of wires includes a first to eighth wires, and has a central portion with all eight wires twisted together and winding around the toroid core. A first and a second ends of the bundle of wires oppositely extend out from the toroidal core. The ends of the first to eighth wires are connected to form a primary and a secondary coils of the transformer, each of the primary and secondary coils having a central tap (35, 36) and carrying circuit in multiple wires.

Abstract: A modular jack (3) has an insulative housing (6), a printed circuit board (92), a number of cores (931-934) and a magnetic core (935), a number of conductive wires (936-939) respectively wind around the cores and then around the magnetic core together, and a number of grounding wires. The grounding wires has a first grounding wire having one end connected to the conductive wire and another end winding around the magnetic core for grounding, and other grounding wires respectively having one end load connected to the corresponding conductive wire and opposite end load directly connected to the first grounding wire.