摘要:
The present invention provides a method and apparatus of electronically selecting an output mode of a welding power source. The invention includes operational circuitry that electronically energizes an output terminal based on a user selected parameter. Specifically, a series of power switches is selectively biased based on a particular output mode selection by the user. As such, independent output terminals of the power source may be activated without requiring mechanical and manual operation by the user.
摘要:
The present invention provides a method and apparatus of electronically selecting an output mode of a welding power source. The invention includes operational circuitry that electronically energizes an output terminal based on a user selected parameter. Specifically, a series of power switches is selectively biased based on a particular output mode selection by the user. As such, independent output terminals of the power source may be activated without requiring mechanical and manual operation by the user.
摘要:
According to some embodiments, a connector to receive a memory module includes a first row of a first plurality of interconnect ends, a second row of a second plurality of interconnect ends adjacent to the first row, and a third row of a third plurality of interconnect ends adjacent to the second row. An interconnect end of the first plurality of interconnect ends, an interconnect end of the second plurality of interconnect ends, and an interconnect end of the third plurality of interconnect ends may be substantially aligned.
摘要:
A fiber optic cable comprising at least one light transmitter extending longitudinally along the cable and a body encompassing the light transmitter. The body includes an exposed surface having an array of fastener elements extending therefrom. The fastener elements arranged and constructed to engage mating fastener elements associated with a supporting surface to selectively secure the cable to the supporting surface.
摘要:
An electrochemical sensor for measurement of hydrogen sulfide is described. The electrochemical sensor comprises an electrolyte; an electrolyte container comprising a hydrogen sulfide permeable membrane; a working electrode and a reference electrode both disposed in the electrolyte; and an instrument capable of maintaining a fixed DC potential in the range of 0 mV to 1,000 mV between the working electrode and the reference electrode. Also a method of detecting hydrogen sulfide in a sample. The method comprises providing an electrochemical sensor; at least partially immersing the gas permeable membrane in the sample; and detecting hydrogen sulfide in the sample. The detection may be qualitative or quantitative.
摘要:
A molded plastic hook fastener component for hook and loop fastening has individual raised bases distributed over a common area, each carrying an individual hook element while a laterally contiguous portion of each raised base raises the lower bound for the loop region beneath the fastener head. During molding, fastener elements are pulled from their mold cavities through cavity portions of the raised bases.
摘要:
A method of forming a fastener is provided, including (a) forming, from a thermoformable material, a preform product having a sheet-form base and an array of preform stems integrally molded with and extending from the base to corresponding terminal ends; (b) heating the terminal ends of the stems to a predetermined softening temperature, while maintaining the sheet-form base and a lower portion of each stem at a temperature lower than the softening temperature; and (c) contacting the terminal ends with a contact surface that is at a predetermined forming temperature, lower than the softening temperature, to deform the terminal ends to form heads therefrom that overhang the sheet-form base. Fasteners and other methods of forming them are also provided.
摘要:
An apparatus for establishing sulfide perfusion is described and includes a sulfide supply for introducing sulfide into fluid for perfusion, an apparatus for delivery of the perfusion fluid, a fluid chemistry monitor for monitoring the concentration of sulfide and other components of the perfusion fluid, and an electronic controller connected with the sulfide supply and the fluid chemistry monitor to control the sulfide supply to regulate the sulfide concentration of the perfusion fluid based on input from the fluid chemistry monitor.
摘要:
According to some embodiments, a connector to receive a memory module includes a first row of a first plurality of interconnect ends, a second row of a second plurality of interconnect ends adjacent to the first row, and a third row of a third plurality of interconnect ends adjacent to the second row. An interconnect end of the first plurality of interconnect ends, an interconnect end of the second plurality of interconnect ends, and an interconnect end of the third plurality of interconnect ends may be substantially aligned.
摘要:
A touch fastener including an elongated base having multiple segments connected by articulable joints. Each segment has an upper surface, a lower surface, and a plurality of touch fastener elements extending from the lower surface of the base. A flexible barrier extends across at least one articulable joint between adjacent base segments. The fastener may include a magnetically attractable material disposed along a center region of the upper surface of the base. The fastener base may define a pair of first and second notches in opposite longitudinal edges of the base at the articulable joint to allow bending of the base. The base may also define a slit extending through the base from a longitudinal edge thereof at the articulable joint.