Abstract:
The present invention discloses an output circuit that is able to adjust the output voltage slew rate and avoid short-circuit current, comprising: a control circuit for receiving an input data and generating a first set of control signals based on the input data; an output control device consisting of a first field effect transistor (FET) connected in series with a second field effect transistor (FET) and the point of connection is the output end for generating an output signal; a first capacitor having one end connected to a first working voltage and generates a first control voltage by charging/discharging on another end to control the gate of the first field effect transistor; a first switch for controlling charging/discharging of the first capacitor device based on the first set of control signals; a first current source for providing charging current for the first capacitor device; a second capacitor having one end connected to a second working voltage and generates a second control voltage by charging/discharging on another end to control the gate of the second field effect transistor; a second switch for controlling charging/discharging of the second capacitor device based on the first set of control signal; and a second current source providing charging current for the second capacitor device. The present invention adjusts output voltage slew rate of the output circuit by adjusting the time constant of the first and second capacitor devices.
Abstract:
A cyclone chamber for a vacuum cleaner includes a cylindrical wall defining an internal cavity. An inlet port extends tangentially from the wall such that air entering the cavity via the inlet port causes a cyclonic flow to develop within the chamber. An exit tube extends axially from the chamber and has a flared opening presented into the chamber. A vortex shield is centred axially within the chamber adjacent to the opening and extends radially from the opening toward the wall. The vortex shield forms a barrier to prevent in the most part, large but light weight particles, carpet fibres and the like from escaping into the exit tube.
Abstract:
A system for controlling the devices connected to a control gateway includes one or more devices, a control gateway, a server and an open platform. The control gateway is electrically coupled to the devices. The server provides a plurality of control gateway base drivers. The open platform is electrically connected to the control gateway. According to the device's description and type information provided by the control gateway, the system automatically downloads a corresponding control gateway base driver from the server, and converts a first device service type into a second device service type automatically by the control gateway base driver. Thereby, other internal bundles on the open platform or external control devices with the second device service type can use the devices connected to the control gateway.
Abstract:
The present invention relates to a backlight module lamp, comprising two conducting brackets, chips, conducting wires, the lower sealing block, upper sealing block, and lamp cover. The main improvements including: the chip cup on one of the conducting pins is designed as a rectangle concave taper chip cup for the light source of a plurality of chips inserted to be reflected as fully straight light rays, the backlight module display panel is embedded via the front opening of the lamp cover to create equal brightness for the long-distance panel, therefore fully overcome the deficiency of unequal brightness for the short-distance light source of traditional round chip cups to achieve the industrial use of long-distance fully straight light rays.
Abstract:
In accordance with the present invention, a method, system, and program for managing the customer and product information of a client by maintaining a common database is disclosed. The present invention connects the client, call center, repair facility and warehouse to efficiently coordinate the customer and product management process. By allowing access to a common database, a user can view and update changes in the customer and product management process in real time increasing the communication and efficiency of delivering service to a customer.
Abstract:
A composition of a thermal interface material is provided. The deficiencies of low thermal conductivity and high thermal resistance in the conventional thermal interface materials are resolved. By using carbon fibers with high thermal conductivity, the thermal conductivity of the thermal interface material can be about 7˜10 times higher than the traditional thermal interface materials. The added amount of carbon fibers is less than the added amount of metal or ceramic powders. The dispersion process is thereby improved. Further, the thermal interface material has a phase change temperature at about 40˜65° C. Holes, gaps and dents on the surface of device are filled at the normal operation temperature of device to reduce the thermal resistance of the entire device and to increase the interfacial bonding strength.
Abstract:
A reusable expansion anchoring assembly comprises a spiral tang and a bolt. The spiral tang is formed by spirally coiling a long wire, and the bolt includes a head and a body. A spiral part is provided on the body to form a plurality of threads spaced equidistantly and the threads at the bottom of the body are in tapered shape. In the setting process, the first thread is assembled with a gap of the spiral tang, and the bolt body and the spiral tang are inserted into a round and elongated hole provided in an object with substantial depth. Turning the bolt head bolt produces sufficient force to assemble the first thread with the spiral tang. Under normal or improper operation, the spiral tang is movable relative to the bolt and can be expanded, and a firm connection between the bolt and the object can be formed.
Abstract:
A liquid crystal display device comprises a color filter substrate and an array substrate. An optical compensation film is disposed on the color filter substrate and/or the array substrate, wherein the optical compensation film comprises a polyimide, comprising the following formula: wherein n is an integer greater than 1, and wherein when A is cyclo-aliphatic compound, B is aromatic compound or cyclo-aliphatic compound, and when A is aromatic compound, B is cyclo-aliphatic compound.
Abstract:
A method of forming devices is provided. A phase change layer is provided. The phase change layer is etched by providing an etch gas comprising a bromine containing compound and forming a plasma from the etch gas. The phase change layer is of a material that may be heated by a current and then when cooled, either forms an amorphous material or a crystalline material, depending on how fast the material is cooled. In addition, the amorphous material has a resistance at least several times greater than the crystalline material.
Abstract:
A heat sink and an electronic apparatus using the same are disclosed. The heat sink comprises a fin structure and a fastening assembly; the fastening assembly comprises an adjustable positioning member, an elastic member, and a hooking member, the elastic member being disposed between the hooking member and the fin structure such that the adjustable positioning member combines the hooking member, the elastic member, and the fin structure; wherein the hooking member may secure the heat sink onto an electronic component, and the adjustable positioning member may be used to adjust the tightness between the heat sink and the electronic component.