Abstract:
A modularized ultrasonic vibration machining apparatus is provided, which includes a tool holder module. The tool holder module further includes: a housing, having a positioning pin disposed thereon; a tool holder linking part, disposed in the housing; a transmitting mechanism, disposed in the housing and linked to the tool holder linking part in a transmission manner; an expanding device, disposed in the housing and linked to the transmitting mechanism in a transmission manner; a piezoelectric element, disposed in the housing and linked to the expanding device; and an electrical connector, disposed in the housing and electrically connected to the piezoelectric element and the positioning pin. Therefore, the modularized tool holder has an internal vibration mechanism and closed circuit setting of power supply, is capable of being assembled and applied conveniently, and has good security, economical efficiency, and applicability in industry.
Abstract:
Provided is a formulation for oral teeth, which includes a plurality of calcium ion carriers and a plurality of calcium-containing particulates. The particulates are carried by the calcium ion carriers, such that the formulation can prevent or rapidly treat dentin-associated symptoms or diseases, while providing a prolonged prophylactic or therapeutic effect.
Abstract:
The present relates to a start-up circuit, which is used for starting up a variable power supply circuit, which comprises a detection circuit and a transition circuit. The detection circuit is used for detecting an output voltage of the variable power supply and producing a detection signal. The transition circuit is coupled to the detection circuit. It transits the level of the detection signal and produces a control signal for starting up or cutting off the variable power supply. Thereby, the problem of incapability in transition can be avoided as well as achieving the purpose of low power consumption.
Abstract:
A cooling fan includes a fan housing and a rotor received in the fan housing. The fan housing has an air inlet and an outlet opposite to the air inlet. The rotor includes a shaft, a hub engaged with the shaft, and a plurality of rotary blades extending outwardly from the hub. The hub has an outer surface expanding along a direction parallel to a central axis of the shaft from the air inlet to the air outlet.
Abstract:
Roll-to-roll printing apparatuses are disclosed. The roll-to-roll printing apparatus includes a printing device with a squeegee moving along a first direction transferring a pattern of a stencil to a roll of working pieces. A sending roller and a receiving roller are disposed on both sides of the printing device. The roll of working pieces is rolled along a second direction to a printing stage of the printing device. An alignment device is disposed corresponding to a position of the stencil and the roll of working pieces. A drying device is disposed on one side of the printing device and may be on the same side with the receiving roller, wherein the drying device cures the patterns on the roll of working pieces.
Abstract:
An exemplary heat dissipation fan includes a rotor and a stator. The stator includes a stator core. The rotor is rotatably mounted around the stator. The rotor includes a hub and a magnet ring received in the hub. The hub includes a top wall and a peripheral side wall depending from the top wall. The magnet ring is attached to the side wall and surrounding the stator. The magnet ring has a larger thickness as measured in a radial direction at a first end which is far away from the top wall than a second end which is adjacent to top wall, such that an attracting force formed between the first end of the magnet ring and the stator core is larger than that formed between the second end of the magnet ring and the stator core.
Abstract:
A cooling fan includes a fan housing, a stator and a rotor received in the fan housing. The rotor includes a shaft, a hub engaged with the shaft, a plurality of rotary blades extending outwardly from the hub, a connecting member and a magnet mounted in the connecting member. The hub includes a plurality of hooks. The connecting member has a flange clasping the hooks of the hub to mount the magnet in the hub.
Abstract:
A power adapter comprises a main power circuit, a feedback circuit, an ID detection circuit and a switch controller. The feedback circuit is coupled to the main power circuit for detecting the DC output voltage and issuing a feedback signal. The ID detection circuit is coupled to the feedback circuit for detecting an ID signal from the DC-powered electronic device and issuing a control signal to the feedback circuit to disable or delay the feedback signal for a specific time period, and comparing a dropping slew rate of the DC output voltage with a preset value to issue a hiccup mode control signal. The switch controller is configured for controlling the operations of the main power circuit in response to the feedback signal and controlling the power adapter to operate in a normal operation mode or a hiccup mode in response to the hiccup mode control signal.
Abstract:
An LED lamp includes a housing comprising a receptacle, first and second bossed holes in the receptacle, each bossed hole having internal threads, and a cover plate including parallel ribs projecting outward, and holes, the cover plate being secured to the receptacle by driving threaded fasteners therethrough into the second bossed holes; two opposite shoulders each formed lengthwise along a central line of an inner surface of either side of the receptacle; a PCB supported by the shoulder and the first bossed holes, the PCB being fastened in the receptacle by driving threaded fasteners therethrough into the first bossed holes; rows of units of LEDs electrically connected to the PCB wherein each row of units of LEDs is parallel to and adjacent the rib; and a waterproofing member in the housing for protecting the PCB. The LED lamp is shallow.
Abstract:
A method and an apparatus for generating a coded block pattern for highpass coefficients are provided. The method includes receiving a quantized highpass coefficient (HP), wherein the HP includes a macroblock data; dividing the macroblock into a plurality of blocks; performing lapped transform (LT) operations of two stages on the said block data, concurrently calculating a plurality of coded block patterns of the blocks corresponding to all possible HP prediction directions; performing a calculation to obtain selection information of the HP prediction directions according to lowpass coefficients (LPs) generated through LT operations of the two stages; selecting a corresponding coded block pattern among the said coded block patterns according to the above-mentioned selection information of the HP prediction directions and outputting the selected coded block pattern.