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3286results about How to "Small structure" patented technology

Switching power supply device and switching power supply system

There is provided a switching power supply device of hysteresis current mode control system which assures excellent response characteristic for change of output current and reduction of power consumption. In a switching regulator of hysteresis current mode control system, a sense resistor connected in series to a coil is eliminated, a serially connected resistor and a capacitor are connected in parallel to a coil in place of such sense resistor. Thereby, a potential of a connection node of these resistor and capacitor is inputted to a comparator circuit having the hysteresis characteristic for comparison with the reference voltage. Accordingly, a switch may be controlled for ON and OFF states.
Owner:RENESAS ELECTRONICS CORP

Systems and methods for cooling electronics components employing vapor compression refrigeration with selected portions of expansion structures coated with polytetrafluorethylene

Systems and Methods of cooling heat generating electronics components are provided employing vapor compression refrigeration. In one embodiment, the vapor compression refrigeration system includes a condenser, at least one expansion structure, at least one evaporator, and a compressor coupled in fluid communication to define a refrigerant flow path, and allow the flow of refrigerant therethrough. The at least one evaporator is coupled to the at least one heat generating electronics component to facilitate removal of heat produced by the electronics component. At least a portion of the at least one expansion structure is coated with a polytetrafluorethylene in the refrigerant flow path for inhibiting accumulation of material thereon. The polytetrafluorethylene coating has a thickness sufficient to inhibit accumulation of material in a pressure drop area of the expansion structure without significantly changing a pressure drop characteristic of the pressure drop area.
Owner:IBM CORP

Micro-fluidic device and method for detecting circulating tumor cell on basis of dimension

The invention provides a micro-fluidic device and a method for detecting circulating tumor cells on the basis of dimensions. The micro-fluidic device comprises a solution storage chamber, a micro-fluidic chip, a waste liquid collecting syringe and a power system which are connected in sequence, wherein the micro-fluidic chip is made of a glass substrate layer and a PDMS (Polydimethylsiloxane) chip layer in a laminated manner; the PDMS chip layer comprises an injection port, a block mass filtering area, a target sell screening area and a discharge port which are communicated in sequence; the block mass filtering area is formed by a column array; the target cell screening area comprises a plurality of main pipelines and side pipelines which are extended in a parallel manner at intervals and are communicated through filtering channels; the front ends of the main pipelines are opened; the filtering channels are formed in the rear ends of the main pipelines; the front ends of the side pipelines are sealed; the rear ends of the side pipelines are opened; the main pipelines and the side pipelines have a first height greater than the dimensions of the circulating tumor cells; the filtering channels have a second height smaller than the dimensions of the circulating tumor cells. The micro-fluidic device and the method for detecting the circulating tumor cells on the basis of the dimensions are good in sensitivity, simple to operate, low in cost, large in flux and short in time.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Ultraviolet curing equipment and method for optical fiber coating

The invention relates to ultraviolet curing equipment and method for an optical fiber coating. The equipment comprises a cylindrical mounting base, wherein an inner cavity of the cylindrical mounting base is provided with UVLED (Ultraviolet Light Emitting Diode) light source modules in a peripheral direction and an axial direction; a cylindrical focusing lens is arranged in front of light-emitting surfaces of the UVLED light source modules, so that ultraviolet rays emitted from the UVLED light source modules are focused on a same curing axis. The ultraviolet curing equipment disclosed by the invention is long in service life, small in heating amount and low in energy consumption; a layout space of light sources is large, so that the output of the UV light sources of a plurality of UVLED light source modules are focused on the curing axis to form a UV light column with high light intensity; an optical fiber absorbs UV and is cured when passing through the UV light column; the light strength of the light column is high and the light sources are from multiple directions, so that the equipment has higher curing efficiency and better curing uniformity, the curing time is shortened, the work efficiency of wiredrawing of the optical fiber is improved, and the curing quality of the coating is improved.
Owner:YANGTZE OPTICAL FIBRE & CABLE CO LTD

Full-automatic heat shrinkage tube penetrating pressing machine

The invention provides a full-automatic heat shrinkage tube penetrating pressing machine. The pressing machine comprises a machine frame and a workbench arranged on the machine frame. The workbench is sequentially provided with a wire cutting and peeling station, a terminal pressing station, a heat shrinkage tube penetrating station and a heat adhesion station side by side. A wire cutting and peeling mechanism, wire feeding mechanisms and wire pulling mechanical arms are arranged on the wire cutting and peeling station, a terminal pressing mechanism, terminal feeding mechanisms and pressing positioning mechanical arms are arranged on the terminal pressing station, tube feeding mechanisms, tube cutting mechanisms, tube feeding mechanical arms, wire clamping mechanical arms, a tube penetrating positioning mechanism and tube penetrating mechanical arms are arranged on the heat shrinkage tube penetrating station, and a conveying chain, a clamping mechanism, an opening mechanism and a heating mechanism are arranged on the heat adhesion station. The pressing machine further comprises a first transfer mechanical arm, a second transfer mechanical arm, a third transfer mechanical arm, a first take-up mechanism and a second take-up mechanism. By the adoption of the structure, the automation degree is high, wire harnesses of three structures can be machined, the functions are diversified, the application range is wide, production efficiency is high, production quality is good, and labor cost is low.
Owner:HONGSHENG MACHINERY EQUIP

Multicolumn strip packing machine

The invention relates to a multicolumn strip packing machine, in particular to a multicolumn strip packing machine capable of carrying out continuous bag-making and packing through automatic operation, comprising a frame, and a film feeding mechanism, a slitting cutter mechanism, a feeding mechanism, a bag molding mechanism, a longitudinal sealing mechanism, a transverse sealing mechanism and a cut-off mechanism arranged on the frame respectively, wherein the transverse sealing mechanism comprises a transverse sealing device which comprises a transverse sealing floating device, two transverse sealing holders, and transverse sealing seats arranged on the two transverse sealing holders respectively; a plurality of transverse sealing guide shafts are together sleeved to transverse beam sliders on the same side; at least one transverse sealing seat is connected to a transverse sealing cylinder for driving the transverse sealing seat to do reciprocating motion; and the axial direction of the transverse sealing guide shaft is consistent with the motion direction of the transverse sealing seat. The transverse sealing mechanism of the multicolumn strip packing machine is capable of providing a buffering force for an object to be packed so that the impact on the object to be packed can be reduced and the object to be packed can be protected against damage; and a plurality of combined components are arranged in a multi-row parallel manner, so that the production of a plurality of packing bags can be completed at the same time; as a result, the production efficiency is greatly improved.
Owner:SHANGHAI SOONTRUE MACHINERY EQUIP
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