Abstract: The present invention is a light emitting diode lamp structure, which comprises a heat dissipating plane, a light emitting housing and a base. The light emitting housing further comprises a casing and a first hollow region. The heat dissipating plane is partly covered by the casing and the rest of the heat dissipating plane is shown in the first hollow region. The part of the heat dissipating plane covered by the casing further includes a plurality of LEDs. The base is mounted with the light emitting housing and electrically engaged with the LEDs.

Abstract: A driving circuit for light emitting elements comprises a rectifying unit, a first constant current unit, a first driving transistor, a first voltage control unit and at least one first light emitting element. The rectifying unit has a first terminal and a second terminal, is connected to an external power source that provides alternating current power that is sinusoidal and has alternating negative and positive segments, inverts the negative segments of the AC power to positive segments and forms a pulsating direct current voltage. The first constant current unit has a first end and a second end. The first driving transistor comprises a first gate, a first drain and a first source. The first voltage control unit comprises a first variable resistor and a first bias control element. The first light emitting element has a first end and a second end.

Abstract: A multi-curvature antenna comprises a radiation conductor and a support element. The outer rim of the radiation conductor is fabricated into an outer ring having an arc-shape surface, and the arc-shape surface has a notch. The central portion of the radiation conductor is patterned to form a conduction path. The support element carries the radiation conductor. A method for fabricating a multi-curvature antenna comprises providing a plane metallic sheet; pressing or stamping the metallic sheet to form a radiation conductor having an outer ring with an arc-shape surface; pattering the central portion of the radiation conductor into a predetermined conduction path and punching the outer ring to form a connection member; and cutting off the connection member to complete a multi-curvature antenna.

Abstract: The invention provides a light emitting device driving circuit, comprising a rectification unit, a current limiting unit and a load. The load comprises a first light emitting device, a reverse voltage providing unit and a second light emitting device connected in serial. When the rectification unit rectifies an alternate current voltage to output a direct current voltage, and the current limiting unit limits the direct current in a predetermined value, the direct current is provided to the first light emitting device or the second light emitting device for operation. The reverse voltage providing unit provides a reverse voltage to reduce the total operating voltage of the light emitting devices in order to enhance the driving efficiency and the power factor.

Abstract: A standard receptacle connector has an insulating housing, multiple first terminals, multiple second terminals, a plug detecting terminal and a shell. The first and second terminals and the plug detecting terminal are mounted on the insulating housing. The shell covers the insulating housing and all of the terminals. The plug detecting terminal is capable of being connected to a controlling circuit incorporated in a PCB on which the standard receptacle connector is mounted and selectively activates the controlling circuit to provide power to an external plug connector that is inserted in and connected to the standard receptacle connector.

Abstract: An optical fiber connector in accordance with the present invention prevents its components from being assembled incorrectly and comprises a distal housing, a core tube, an extension tube, a spring, a proximal housing and an end tube. The distal housing has a slot. The core tube is mounted longitudinally in the distal housing and has a distal tube and a proximal tube. The extension tube is mounted around and connected to the proximal tube. The spring is mounted around the proximal tube of the core tube and the extension tube. The proximal housing is connected to the distal housing and mounted around the core tube, the extension tube and the spring and has an assembly protrusion that is mounted slidably in the slot to prevent the proximal housing from being connected to the distal housing incorrectly.

Abstract: An antenna with a feed cable support member comprises a first conductor, a pivotal shaft, a second conductor and a feed cable. The first and second conductors respectively connect with two sides of the pivotal shaft. The pivotal shaft enables the first and second conductors to open or close by 0-180 degrees. The support member is connected with one end of the pivotal shaft and disposed inside the slot between the first and second conductors. The feed cable has a high frequency signal feeding terminal fixed to the surface of the support member. Based on the principle of an aperture coupled antenna, the present invention adds the support member into the slot, whereby the high frequency signal feeding terminal can be directly fixed to the surface of the support member, and whereby the operating frequency and impedance matching can be fine tuned via the support member.

Abstract: A backplane connector has a housing and multiple terminal assemblies. The housing has a top, a bottom and an expansion slot defined in the top. The terminal assemblies are mounted in the bottom of the housing and each terminal assembly has a first insulating base, a second insulating base and two pairs of signal transmission terminals. The first and second insulating bases are connected to each other. The pairs of the signal transmission terminals are mounted respectively through the first and second insulating bases. Each signal transmission terminal has a curved guide element and an angled protruding element. The curved guiding elements smoothly contacts and guides an electrical connecting portion of a PCB expansion card to move so that the PCB expansion card is installed easily in the expansion slot of the backplane connector.

Abstract: A male connector has an insulating housing, multiple signal terminals, and multiple grounding modules. The signal terminals are mounted through the insulating housing. The grounding terminal modules are mounted through the insulating housing. Each grounding terminal module is integrally formed into one piece and has multiple grounding terminals. Adjacent grounding terminals are connected integrally to each other so that the grounding terminals of each grounding terminal module are arranged in a line. The integrally formed ground terminal modules reduce a total tolerance of the grounding terminals and increase the production rate of the male connector.

Abstract: A safety lamp, which comprises a lamp body and two electric connecting portions. The lamp body has a light emitting module. The two electric connecting portions are respectively disposed on two sides of the lamp body, and each of the electric connecting portions further comprises a first electric connecting terminal, a pressing switch unit, an elastic conductive unit and a second electric connecting terminal. Each of the pressing switch units must sustain a pressing force to urge against the corresponding elastic conductive unit to deform and to electrically connect the corresponding first electric connecting terminal to the corresponding second electric connecting terminal through the elastic conductive unit. Alternatively, when the pressing switch unit is released from the pressing force, the deformed elastic conductive unit reforms back to an opposite direction of the pressing force to form an open circuit.

Abstract: A carrier structure for mounting at least an LED chip includes at least a lead and a base. The LED chip housed inside the base is coupled parallel with an electronic element. The lead is connected electrically to the LED chip at one end, while another end is exposed to the atmosphere. The base encaving the lead further has a shallow accommodation room to mount the electronic element at a surface not the same with the surface that mounts the LED chip.

Abstract: A limiting current circuit that has output short circuit protection is connected to an external voltage source and comprises an output terminal, an input current unit, a driving transistor, a voltage control resistor, a voltage control transistor and a delay unit. The output terminal is connected to a load and has an output current. The driving transistor has an internal resistance, a drain current and a gate voltage. The voltage control resistor has a resistor voltage. The voltage control transistor has an internal resistance and a parasitic capacitance. The delay unit makes the resistor voltage charging the parasitic capacitance to extend the period of lower internal resistance of the voltage control transistor and the period of higher internal resistance of the driving transistor, makes the internal resistance of the voltage control transistor is less than the internal resistance of the driving transistor when the load is shorted.

Abstract: An electric shock protection device is provided, including a voltage input unit, a rectifier unit, a determine unit, an output control unit and a switch unit. The voltage input unit receives an AC voltage, and the rectifier unit rectifies the AC voltage to time-varying DC voltage. The determining unit determines whether the time-varying DC voltage is less than or greater than the preset voltage and selectively chooses an output control signal to determine whether there is an external receptor connected in series with the input power. The output control unit is driven by the control signal to make the switch unit control whether the time-varying DC voltage is provided to the electrical load, and to sustain or interrupt the conductive circuit loop. Accordingly, the receptor can be avoided from being subjected to an electric shock from high AC voltage.

Abstract: An LED (Light Emitting Diode) module includes a base seat and a plurality of LEDs. The base seat includes a planar portion having a planar external surface and a straight portion connected interactively to the planar portion, and having a straight external surface. The plurality of LEDs includes a first LED mounted on the planar external surface of the planar portion to emit light rays in the facing in a vertical direction and a second LED mounted on the straight external surface of the straight portion to emit light rays in the horizontal direction.

Abstract: A multi-frequency antenna comprises a first conductor, a second conductor, a grounding member, and a third conductor. The first and second conductors are respectively arranged on a first plane and a second plane. The grounding member is arranged on a third plane existing between the first and second planes. The third conductor is connected with the first conductor and arranged on the first plane also. The first and third conductors are respectively coupled to the radiation signals of the second conductor to form a first path and a second path. The first path and the second path have a phase difference of 180 degrees. The present invention features the additional third conductor. The third conductor and the first conductor are coupled to the radiation signals of the second conductor to generate opposite-phase signals. Thus are counterbalanced the interferences among the antenna systems of an identical frequency band.

Abstract: An antenna with an improved holed system ground plane comprises a substrate, a radiation conductor member, a grounding member and a system ground plane. The radiation conductor member is arranged on the surface of the substrate. The grounding member is arranged on one edge of the substrate. The radiation conductor member is connected with the grounding member. The system ground plane is connected with one side of the grounding member. The system ground plane has at least one arbitrary-shaped hole. A radiation-enhancing filler is disposed in the arbitrary-shaped hole. The present invention solves the conventional problems that the system ground plane is drilled or cut to accommodate components and IC chips, keep away from wiring routes and avoid protrusions on the appearance, via disposing radiation-enhancing fillers in the arbitrary-shaped holes. Thereby is kept integrality of the system ground plane and promoted omnidirectionality of signal transmission.

Abstract: A thin-film antenna comprises a plastic member, a flexible radiation conductor and a conduction member. The plastic member has an accommodation space. The flexible radiation conductor is disposed on one surface of the accommodation space. The conduction member has a contact terminal physically contacting the flexible radiation conductor. The flexible radiation conductor is embedded on one surface of the accommodation space of the plastic housing of a wireless communication device via a hot pressing process. The flexible radiation conductor can replace the conventional complicated rigid metallic radiation conductor to reduce thickness of products. The conduction member has a conductive metallic thimble for conducting electric signals, which can prevent the thin-film radiation conductor from protruding or breaking.

Abstract: A monofrequency antenna integrated with a coaxial feeder cable comprises a first conductor, a second conductor and a feeder cable. The feeder cable includes a coating layer, an outer wire, an insulating layer and a central wire. The coating layer is formed on the outmost surface of the feeder cable. The outer wire is formed on the inner surface of the coating layer, extends in two opposite directions, and connects with the second conductor. The insulating layer is formed on the inner surface of the outer wire and extends in two opposite directions. The first conductor is formed on the inner surface of the insulating layer and extends along one direction. The central wire is formed on the inner surface of the insulating layer and extends along a direction opposite to the direction along which the first conductor extends. The present invention simplifies antenna structure and promotes transmission efficiency.

Abstract: The LED driver of the present invention comprises multiple LED arrays, at least one dividing diode, a power module, a driving module, at least one switch pair and a voltage sensing module. Each LED array comprises multiple LEDs connected in series. The dividing diode is mounted between adjacent LED arrays. The power module is connected to an external power source and forms a pulsating direct current (DC) voltage. The driving module receives the pulsating DC voltage outputs a constant current to the LED arrays. The voltage sensing module closes and opens the switch pairs that changes electrical configuration of the LED arrays. The LED driving method of the present invention comprises setting multiple voltage drops and at least one reference voltage; sensing an incoming voltage to compare with the reference voltage; and changing ways of connections of LED arrays based on the reference voltage and the incoming voltage.