A power cable assembly includes a power cable extending between a first end and a second end having a hot conductor and a neutral conductor. The power cable assembly includes a circuit protection device along the power cable between the first and second ends. The circuit protection device has a ground fault circuit interrupt (GFCI) device configured to sense a current difference on the hot and neutral conductors to initiate a triggering event. The circuit protection device has a high-power relay device connected to the GFCI device. The high-power relay device is connected to the hot conductor and is configured to open the hot line when the triggering event is initiated by the GFCI device.

Earphone assemblies with multiple subassembly housings are provided.

A hand held switch having a depressible button linked to an electromechanical two-stage switch transmits first and second type electric signals in response to a depth of the button press. A pivoting lever links the button to the switch and is designed to move the switch in response to a button press for improved tactile control.

Disclosed herein is an improved low-profile rotary light switch for controlling a lighting apparatus. In some embodiments, the rotary light switch can comprise a rotary potentiometer mounted to a PCB and comprising a keyed shaft protruding through the opening of a top switch enclosure. The rotary light switch can further comprise a button chassis comprising a keyhole passage defined therethrough. At least part of the keyed shaft can protrude into the keyhole passage when the button chassis is coupled to the keyed shaft by the fastener. The rotary switch can also comprise a button top configured to be non-detachably coupled to the button chassis when the button top is pressed onto the button chassis. Rotating the button top can rotate the button chassis and keyed shaft such that the brightness or intensity of the lighting load is controllable via rotation of the button top.

An in-line slide dimming switch includes a switch and dimming circuit installed on a printed circuit board (which is installed in the in-line slide dimming switch) and operated with a dimmable energy-saving fluorescent bulb and a dimmable LED bulb, so that the in-line slide dimming switch may adjust the light emitting brightness of the dimmable energy-saving fluorescent bulb and the dimmable LED bulb installed onto a lamp holder. With the wire holders installed at both ends, a power cable is installed conveniently to achieve the effects of shortening the assembling procedure, and improving the assembling efficiency and the market competitiveness.

An accessory may be provided with a button controller having a microphone and switches. Plastic structures for the accessory may be formed by injection molding. Plastic structures may be molded around a printed circuit and wiring. The wiring may have a plastic jacket. The molded plastic structures may bond with the plastic jacket to retain the wiring. The molded plastic structures may be molded directly to the printed circuit board. Protrusions on the molded plastic structures may mate with openings in a metal clip. Housing structures may be mounted to the metal clip. The metal clip may be provided with a spring to short the metal clip to a trace on the printed circuit. The metal clip may also have a portion that receives electrostatic charge during electrostatic discharge events and that discharges the charge through the spring to the trace on the printed circuit.

An earphone device includes first and second earphone bodies into which respective electro-acoustic transducers are built; first and second cables, one end of each of which is connected to the respective earphone body and within each of which a switch member to be turned on by one-way press is disposed over a predetermined range along the length direction of the cable so that the cable has switch functions; wherein a switch is shunted into two switches by the first and second cables, portions of the first and second cables having switch functions are arranged one on top of the other, and an overlapped portion is unidirectionally pressed to simultaneously turn on the respective switches. In addition, a sound-reproducing system is configured by combining a mobile terminal which operates in conjunction with this earphone device.

An in-line slide dimming switch includes a switch and dimming circuit installed on a printed circuit board (which is installed in the in-line slide dimming switch) and operated with a dimmable energy-saving fluorescent bulb and a dimmable LED bulb, so that the in-line slide dimming switch may adjust the light emitting brightness of the dimmable energy-saving fluorescent bulb and the dimmable LED bulb installed onto a lamp holder. With the wire holders installed at both ends, a power cable is installed conveniently to achieve the effects of shortening the assembling procedure, and improving the assembling efficiency and the market competitiveness.

A remote controlled extension cord. The extension cord has a wire attached to a plug with an integrated base. The base serves to cradle a remote control, which is used to turn power on/off to the extensions on the cord. The extension cord has a number of advanced operations, for example a sequential flash operation which cycles power between all of the individual sockets in the extension cord in sequence, and then repeats the sequence. This can all be controlled by the remote control.

Head-mounted augmented reality (AR) devices can track pose of a wearer's head to provide a three-dimensional virtual representation of objects in the wearer's environment. An electromagnetic (EM) tracking system can track head or body pose. A handheld user input device can include an EM emitter that generates an EM field, and the head-mounted AR device can include an EM sensor that senses the EM field. EM information from the sensor can be analyzed to determine location and/or orientation of the sensor and thereby the wearer's pose. The EM emitter and sensor may utilize time division multiplexing (TDM) or dynamic frequency tuning to operate at multiple frequencies. Voltage gain control may be implemented in the transmitter, rather than the sensor, allowing smaller and lighter weight sensor designs. The EM sensor can implement noise cancellation to reduce the level of EM interference generated by nearby audio speakers.