Abstract: Described is a gas turbine diffuser (300) comprising a strut (302) with a leading edge (304) extending between a first wall portion (308a) and a second wall portion (308b), wherein a first edge portion (304a) of the leading edge (304) is inclined towards a diffuser section outlet (326), i.e. in flow direction (328) of an exhaust stream, with regard to a normal direction (319a) perpendicular to the first wall portion (308a) at a first leading end point (320a) at which the leading edge (304) meets the first wall portion (308). Hence the leading edge (304) is partially inclined towards a diffuser section outlet (326).

Abstract: A turbine arrangement and a gas turbine engine including a rim seal is configured with two cavities. The main fluid path, the two cavities, and a disc space are furthermore separated from another, but still in fluid communication with another, via three annular seal passages. The turbine arrangement also includes a plurality of cooling fluid injectors arranged underneath a radially inner vane platform. The rim seal is configured for an upstream guide vane and a downstream rotor blade.

Abstract: A constant current control circuit includes a current source output module and at least two output circuits. Each of the output circuits includes an automatic constant current regulating module, a power transistor drive and control module electrically coupled to automatic constant current regulating module, and a load module formed of one or more LED devices and electrically coupled to a power transistor drive and control module. The constant current control circuit in operation tracks changes in current of each output circuit and regulates the currents of all the output circuits accordingly.

Abstract: A turbine arrangement and a gas turbine engine comprising a rim seal is configured with two cavities. The main fluid path, the two cavities, and a disc space are furthermore separated from another, but still in fluid communication with another, via three annular seal passages. A rim seal is configured for an upstream rotor blade and a downstream guide vane. The seal arrangement includes a trailing edge of the inner blade platform, a leading edge of the inner vane platform and a first annular cavity and a second annular cavity.

Abstract: The invention provides a constant current control device and a television including the constant current control device. The constant current control device includes a constant current control module and a switched-mode power supply module used for providing a stable voltage for a load. The constant current control module includes a constant current source unit used for providing a reference current, a constant current control unit used for keeping a current flowing through the load constant as the reference current, and a feedback unit used for keeping the voltage of the constant current control unit constant. The present invention, with a simple circuit structure, implements the objective of precisely controlling a current passing through a load.

Abstract: A carry-and-transport device includes a caster unit and a straight-wheel unit. A control unit which has a sleeve and the sleeve is located corresponding to the straight-wheel unit of the carry-and-transport device. A movable frame is connected to the sleeve and has an auxiliary caster unit connected to the lower end thereof. The auxiliary caster unit normally located above the ground and does not contact the ground. A switch unit is connected to the top of the movable frame so as to control the movable frame to move upward and downward. When the carry-and-transport device turns or makes a U-turn, the auxiliary caster unit touches the ground by operation of the control unit so as to reduce the turning radius of the carry-and-transport device.

Abstract: The invention relates to digital television authentication system and method. The system includes a digital television having a digital television master chip; an SIM card module with a built-in SIM card, connected to the digital television master chip, and an authentication server wirelessly connected to the SIM card. The SIM card module includes a symmetric key generation unit used for generating a symmetric encryption key CT according to a Session Key (SEK) received by the SIM card and an identity (ID) of the SIM card; and a CW acquisition unit used for decrypting, according to the symmetric encryption key CT, an ECW sent by the authentication server, to obtain a CW. The authentication server includes an SEK generation unit used for randomly generating a string and taking the string as an SEK; and an SEK sending unit used for sending the SEK to the SIM card module.

Abstract: The invention provides a constant current control device and a television including the constant current control device. The constant current control device includes a constant current control module and a switched-mode power supply module used for providing a stable voltage for a load. The constant current control module includes a constant current source unit used for providing a reference current, a constant current control unit used for keeping a current flowing through the load constant as the reference current, and a feedback unit used for keeping the voltage of the constant current control unit constant. The present invention, with a simple circuit structure, implements the objective of precisely controlling a current passing through a load.

Abstract: A compressor vane or compressor blade is provided. The axial flow compressor includes an axial direction, a radial direction, a compressor hub and a compressor casing. The vane or blade includes an airfoil with airfoil sections having a span, a chamber line and a leading edge at which the chamber line includes a leading edge blade angle with the axial direction of the compressor and a trailing edge at which the chamber line includes a trailing edge blade angle with the axial direction of the compressor. The airfoil sections are stacked at the leading edge on a straight line extending along a radial direction of the compressor from the compressor hub towards a compressor casing and in that the leading edge angles of the airfoil sections vary along the span and are larger for airfoil sections close to the hub and close to the wall than for mid-span airfoil sections.

Abstract: A constant current control circuit includes a current source output module and at least two output circuits. Each of the output circuits includes an automatic constant current regulating module, a power transistor drive and control module electrically coupled to automatic constant current regulating module, and a load module formed of one or more LED devices and electrically coupled to a power transistor drive and control module. The constant current control circuit in operation tracks changes in current of each output circuit and regulates the currents of all the output circuits accordingly.

Abstract: Described is a gas turbine diffuser (300) comprising a strut (302) with a leading edge (304) extending between a first wall portion (308a) and a second wall portion (308b), wherein a first edge portion (304a) of the leading edge (304) is inclined towards a diffuser section outlet (326), i.e. in flow direction (328) of an exhaust stream, with regard to a normal direction (319a) perpendicular to the first wall portion (308a) at a first leading end point (320a) at which the leading edge (304) meets the first wall portion (308). Hence the leading edge (304) is partially inclined towards a diffuser section outlet (326).

Abstract: A compressor vane or compressor blade is provided. The axial flow compressor includes an axial direction, a radial direction, a compressor hub and a compressor casing. The vane or blade includes an airfoil with airfoil sections having a span, a chamber line and a leading edge at which the chamber line includes a leading edge blade angle with the axial direction of the compressor and a trailing edge at which the chamber line includes a trailing edge blade angle with the axial direction of the compressor. The airfoil sections are stacked at the leading edge on a straight line extending along a radial direction of the compressor from the compressor hub towards a compressor casing and in that the leading edge angles of the airfoil sections vary along the span and are larger for airfoil sections close to the hub and close to the wall than for mid-span airfoil sections.

Abstract: A backlight control method for an electronic display device comprises the following steps: monitoring whether the user has triggered a backlight control signal; testing whether backlight has been turned on; based on the backlight control signal triggered by the user, performing the appropriate backlight control. The backlight control method for an electronic display device provided by the present invention can promptly control the backlight of an electronic display device according to user requirements. In particular, it can promptly turn off the backlight, thus effectively saving energy and prolonging the lifecycle of the electronic display device.

Abstract: An electrical connector comprises an insulated housing (1) having a base (10) a plurality of conductive terminals (2) retained in the housing and a shielding member (3) assembled on the housing. The base extends along a longitudinal direction and defines a latching hole (16) recessed at one of lengthwise ends of thereof. The shielding member has a latching portion (34) extending along a mating direction of the electrical connector perpendicular to the longitudinal direction so as to be retained in said latching hole.

Abstract: An electronically steerable antenna system includes a plurality of panels that are coupled together to form an N-sided polygon. Each panel includes a plurality of microstrip conductor patches forming a phased array antenna. In a first embodiment that includes beam steering, each panel can selectively transmit or receive in a direction that is either perpendicular to the panel, or to the left or right of perpendicular, depending upon relative delay line lengths applied to the left and right antennas. A second embodiment omits the beam steering capability for each panel and simply enables only one of the N different panels to be employed for transmitting or receiving a radiofrequency signal in a direction perpendicular to the panel. PIN diodes are preferably used for selecting the panel that is active, and in the first embodiment, for selecting the delay lines used.

Abstract: The invention provides a tape film backing including a mixing layer comprising 40-60 parts by weight of PE and 60-40 parts by weight of EPDM rubber and a PE layer. The invention also provides a tape with an adhesive layer coated on the mixing layer or the PE layer of the tape film backing. The tape and the film backing is a halogen-free eco-material possessing superior physical properties as well as fine electrical insulating properties.

Abstract: An electrical connector comprises an insulated housing (1) having a base (10) a plurality of conductive terminals (2) retained in the housing and a shielding member (3) assembled on the housing. The base extends along a longitudinal direction and defines a latching hole (16) recessed at one of lengthwise ends of thereof. The shielding member has a latching portion (34) extending along a mating direction of the electrical connector perpendicular to the longitudinal direction so as to be retained in said latching hole.

Abstract: A tape backing film is provided, comprising 20 to 80 parts by weight of polyolefin and 20 to 80 parts by weight of EPDM rubber or EPR rubber. The polyolefin comprises 50 to 90% by weight of polyethylene and 50 to 10% by weight of polypropylene.

Abstract: An electronically steerable antenna system includes a plurality of panels that are coupled together to form an N-sided polygon. Each panel includes a plurality of microstrip conductor patches forming a phased array antenna. In a first embodiment that includes beam steering, each panel can selectively transmit or receive in a direction that is either perpendicular to the panel, or to the left or right of perpendicular, depending upon relative delay line lengths applied to the left and right antennas. A second embodiment omits the beam steering capability for each panel and simply enables only one of the N different panels to be employed for transmitting or receiving a radiofrequency signal in a direction perpendicular to the panel. PIN diodes are preferably used for selecting the panel that is active, and in the first embodiment, for selecting the delay lines used.

Abstract: An automatic tool changer in a machining center includes a reducer, a compound cam, a cylindric cam, a four-bar mechanism, an elliptic trammel mechanism, and a tool changer device. The compound cam and the cylindric cam are driven by a motor after speed reduction through a belt and gear train. The compound cam which is composed of a roller gear cam and a face cam performs the tool change motions. During the tool change motions, the cylindric cam drives the follower which is fixed on the slider of the elliptic trammel mechanism to make the other slider push the pull bar which produces the pushing and pulling tool motions in the spindle head. By way of using this design, the tool change time is largely reduced, the tool change motions are smoother, and the cost is less expensive than the previous designs.