Abstract: An incorrect-circuit deactivation device of a magnetic GFCI outlet includes an electromagnetic coil seat, a magneto-conductive core driven by the electromagnetic coil seat to displace, and two magnetic elements located on both sides of the magneto-conductive core. The magneto-conductive core is connected to a first electrical conductive end. The first electrical conductive end is positioned to face a second electrical conductive end. Electric power is supplied when the first electrical conductive end is brought into contact with the second electrical conductive end. The electromagnetic coil seat senses a reverse current to make the magneto-conductive core to displace toward one of the magnetic elements when there is a ground fault, thereby departing the first electrical conductive end from the second electrical conductive end to cut off the electric current.

Abstract: A keystone jack (10) includes a cover body (1), a lining body (2), a carrier body (3), a printed circuit board (4), a housing (5), and a flap (6). The cover body (1) includes a space (11). The space (11) includes a cruciform partition with an elongated partition plate (13) perpendicular interlaced a short partition plate (14). The lining body (2) has two edges (21). A connection part (22) is between the two edges (21). A stud (23) and a separation plate (24) are between the connection part (22) and the two edges (21). The stud (23) has a first channel (231). The separation plate (24) has a second channel. When the lining body (2) is installed in the space (11), the elongated partition plate (13) and the short partition plate (14) in the space (11) are through the first channel (231), the second channel (242), and the opening (25) to form a double-cross isolation structure.

Abstract: An apparatus for ground fault current interrupter with overall end-of-life indication and shutdown protection function includes a first silicon-controlled rectifier, a reverse unit, a test switch unit and a ground fault current interrupter. The ground fault current interrupter includes a second silicon-controlled rectifier, a switch unit, a switch control unit and a rectifier filter unit. When a test current leakage signal is generated, a drive power is provided to the reverse unit, and the input power supply generates a current leakage phenomenon. If the ground fault current interrupter fails, then the second silicon-controlled rectifier will not be triggered, which makes the reverse unit trigger the first silicon-controlled rectifier, such that the rectifier filter unit outputs a DC power flowing through the first silicon-controlled rectifier to interrupt a power supply of the switch control unit.

Abstract: An LED indicator device is mounted in an AC power plug or socket and electrically connected in parallel with an AC power source. The LED indicator device includes a driving/current-limiting circuit to which an LED lighting circuit is coupled. The driving/current-limiting circuit includes a driving/current-limiting capacitor and a discharge resistor connected in parallel with the driving/current-limiting capacitor. The LED lighting circuit includes an LED, a protective instantaneous current-limiting resistor coupled to the LED, a rectifying diode connected in parallel with the LED, and a protective instantaneous voltage-limiting capacitor connected in parallel with the LED. The LED is lit to show the position and on/off state of the AC power plug or socket. Three LEDs emitting different colors and associated driving/current-limiting circuits and associated LED lighting circuits can be utilized to indicate incorrect power connection or short circuit of the AC power plug or socket.

Abstract: An electrical connector with crosstalk compensation includes a substrate (10), a first conducting group (G1), a second conducting group (G2), a first metal conducting wire (C1), and a second metal conducting wire (C2). A first conducting pair (S21) of the second conducting group (G2) is electrically connected to a first conducting pair (S11) of the first conducting group (G1) to form a first signal loop pair (L1). Furthermore, a second conducting pair (S22) of the second conducting group (G2) is electrically connected to a second conducting pair (S12) of the first conducting group (G1) to form a second signal loop pair (L2). The first metal conducting wire (C1) and the second metal conducting wire (C2) are electrically connected to a second conductor (R21) and a fourth conductor (R22) of the second conducting group (G2), respectively.

Abstract: A group wiring system includes a hub of a server system, a distribution frame including a plurality of wire pair receptacles, a plurality of remote receptacles, a testing device, and a plurality of testing circuits. Each testing circuit is coupled between conductive wires of contacts of an associated wire pair receptacle. Each testing circuit includes a light emitting device and a filtering device. The light emitting device emits light when the testing device applies a testing voltage to the contacts. The testing voltage is a low-frequency voltage signal having a frequency higher than 200 Hz that creates a circuit impedance higher than an impedance of the filtering device when passing through the hub, thereby decaying and filtering the voltage signal and allowing locating test while the server system is on-line. A method for locating wire pairs in a group wiring system is also disclosed.