Abstract:
An electrical connector socket includes a casing, a main body received in the casing, a first power contact terminal one distal end of which is mounted inside the power transmission body, a first power detect terminal, a second power detect terminal, a second power contact terminal, a ground terminal, upper terminals, lower terminals, an upper enclosure provided to enclose the bents of the upper terminals and a lower enclosure provided to enclose the bents of the lower terminals and to combine with the upper enclosure.
Abstract:
A connector assembly has a plug and socket; the plug includes an insulative body, at least one first power contact, at least one second power contact and a metal shield. The insulative body has a base portion and a tongue portion extending from the base portion. The tongue portion includes a plurality of power contact grooves and penetrates through the base portion, and at least one first convex portion defined in a periphery of the tongue portion. The first power contact and the second power contact are respectively formed on the power contact grooves of the insulative body for connection to a power source in a socket of host device. The metal shield encloses the tongue portion of the insulative body to cover the tongue portion. Consequently, the charging speed can be increased, reducing charging time.
Abstract:
A multi-frequency antenna includes a first antenna element, a second antenna element, a connection element, a third antenna element and a shorted element. The connection element is connected between the first antenna element and a neighborhood portion of the third antenna element. A feeding point is located in or nearby a first junction between the connection element and the first antenna element or located in the connection element. The shorted element is connected between the second antenna element and the grounding plane. The shorted element extends from a second junction between the second antenna element and the third antenna element to the grounding plane. The first conductive path that extends from the feeding point to the other end of the shorted element is substantially equal to a second conductive length that extends from the feeding point to the free end of the first antenna element.
Abstract:
The invention discloses a heat dissipation assisting apparatus for lamp (20) to form a flow channel space (30) between the heat dissipation lamp holder (24) and the shell (28). When the lamp is in operation, heat generated by the lamp is assimilated by the heat dissipation lamp holder (24), and gas in the flow channel space (30) is heated by the heat assimilated to the heat dissipation lamp holder. Thus, the gas heated would flow in the flow channel space, and form convection with gas in the outside environment to dissipate heat outside, and heat insulation of the shell may prevent a user from being burned. The heat dissipation lamp holder and the shell can be detachable to allow convenient cleaning of dust in the space therebetween, thus preventing from deterioration of heat dissipation efficiency.
Abstract:
The invention provides a lamp circuit of a light emitting device, which comprises a capacitor, a rectification unit, a current limiting unit, and a light emitting device. The capacitor is connected to the two lamp contacts of the lamp holder of the electrical ballast to change the resonant frequency of the resonant circuit of the electrical ballast. The rectification unit is connected to the capacitor, and utilized to rectify a sine-wave voltage to a direct current voltage. The current limiting unit is connected to the rectification unit, outputting a direct current corresponding to the direct current voltage. The light emitting device is connected to the current limiting unit and the rectification unit to generate a light source. With the invention, the light emitting device can be installed directly in a lamp holder of a conventional fluorescent lamp.
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:
The invention discloses a heat dissipation assisting apparatus for lamp (20) to form a flow channel space (30) between the heat dissipation lamp holder (24) and the shell (28). When the lamp is in operation, heat generated by the lamp is assimilated by the heat dissipation lamp holder (24), and gas in the flow channel space (30) is heated by the heat assimilated to the heat dissipation lamp holder. Thus, the gas heated would flow in the flow channel space, and form convection with gas in the outside environment to dissipate heat outside, and heat insulation of the shell may prevent a user from being burned. The heat dissipation lamp holder and the shell can be detachable to allow convenient cleaning of dust in the space therebetween, thus preventing from deterioration of heat dissipation efficiency.
Abstract:
A backplane connector has a housing (10), a first insulative base (20), a second insulative base (20a), multiple first terminals (30), multiple second terminals (30a) and multiple third terminals (50). Each of the insulative bases (20, 20a) is mounted in the housing (10) and is formed into one-piece. The first terminals (30) are mounted on the first insulative base (20). The second terminals (30a) are mounted on the second insulative base (20a). The third terminals (50) are mounted on the insulative bases (20, 20a). The one-piece insulative bases (20, 20a) excellently reduce their tolerances and raise the structurally strength of the backplane connector. Therefore, the production rate of the backplane connector increases.