摘要:
The present invention relates to chemical and bioanalytical sensors and sensor systems, particularly to systems incorporating a calibration device for sensors where the calibration device is composed of structures and materials for trapping and retaining calibrant materials until they are needed and released quantitatively.
摘要:
An amplified bimorph scanning mirror for use in various optical systems, an optical coherence tomography scanner incorporating the amplified bimorph scanning mirror, and a method for manufacturing the foregoing are described. A method for optically scanning a target site using the amplified bimorph scanning mirror is further provided. The scan range which can be obtained by exemplary implementations of the present invention can be larger than the scan range made available by conventional scanners.
摘要:
A circuit breaker includes a molded housing, separable contacts, an operating mechanism adapted to open and close the separable contacts, and a trip circuit cooperating with the operating mechanism to trip open the separable contacts. The molded housing includes two molded halves. The trip circuit includes a pair of arc fault printed circuit boards which cooperate with the corresponding molded halves to form an external composite structure. That external composite structure includes the printed circuit boards and an over-molding material, such as, for example, a thermally conductive epoxy coating disposed thereon.
摘要:
A quick disengaging field joint connects a first component of an exhaust system of a gas turbine engine to a second component of the exhaust system. The field joint includes a pair of opposed stepped liners connected via exterior-facing connecting flanges. The field joints can be disassembled entirely from outside the exhaust housing without requiring access to the interior of the exhaust housing.
摘要:
An electrical switching apparatus, such as an aircraft circuit breaker or an aerospace circuit breaker, is for a corresponding aircraft or aerospace panel including a first aperture and a second aperture. The circuit breaker includes a status, such as a health status or trip status, a housing adapted to be coupled to the panel, separable contacts and an operating mechanism adapted to open and close the separable contacts. The operating mechanism includes an operating handle adapted to pass through the first panel aperture and a light indicator adapted to be disposed through the second panel aperture to indicate the status of the circuit breaker.
摘要:
A quick disengaging field joint connects a first component of an exhaust system of a gas turbine engine to a second component of the exhaust system. The field joint includes a pair of opposed stepped liners connected via exterior-facing connecting flanges. The field joints can be disassembled entirely from outside the exhaust housing without requiring access to the interior of the exhaust housing.
摘要:
An amplified bimorph scanning mirror for use in various optical systems, an optical coherence tomography scanner incorporating the amplified bimorph scanning mirror, and a method for manufacturing the foregoing are described. A method for optically scanning a target site using the amplified bimorph scanning mirror is further provided. The scan range which can be obtained by exemplary implementations of the present invention can be larger than the scan range made available by conventional scanners.
摘要:
A fish feeding stimulant in one example comprises a host media. The host media comprises an amino acid component with a dominant amino acid. The host media is configured to release the dominant amino acid with a predetermined flux rate into an aqueous environment upon placement of the host media in the aqueous environment. The predetermined flux rate is selected to provide a concentration of the dominant amino acid, in an area surrounding the host media, which exceeds a threshold level for an involuntary feeding response of one or more fish in the area surrounding the host media.
摘要:
A tester for testing a circuit breaker includes a plurality of load elements each having a nominal fixed impedance and an electronic switch associated with each load element. The electronic switch, when turned on, electrically connects a corresponding load element in series with a circuit breaker load terminal and in parallel with none or with a number of other load elements. A controller turns on a number of the electronic switches selected to draw through a corresponding number of the load elements a test current selected as a function of a designated rated current for the circuit breaker and sufficient to trip open the same. A pulse width modulation circuit cooperates with the controller and with the electronic switches. The pulse width modulation circuit provides a constant magnitude of the test current to accommodate variations of the nominal fixed impedance or variations of the voltage of the load terminal.
摘要:
A miniature circuit breaker comprising a non-conductive housing assembly; a pair of separable contacts including a first, fixed contact coupled to said housing assembly and having a terminal extending outside said housing assembly, and a second, movable contact having a terminal extending outside said housing assembly; an operating mechanism coupled to, and structured to move, said movable contact between a first position, wherein said movable contact engages said fixed contact, and a second position, wherein said movable contact is spaced from said fixed contact; a trip device coupled to said operating mechanism and structured to actuate said operating mechanism to separate said separable contacts upon the occurrence of a trip condition; an arc fault trip mechanism having an arc fault detector and a shape memory alloy element; said arc fault detector structured to detect an arc fault on the load side of said separable contacts and to provide an electrical pulse; said shape memory alloy element structured to transform between a first shape and a second shape during the application of an electrical pulse, said shape memory alloy element having a first end and a second end, said shape memory alloy element first end coupled to said housing assembly, said shape memory alloy element coupled to said trip device; said arc fault detector further coupled to said shape memory alloy element and structured to provide an electrical pulse to said shape memory alloy element sufficient to transform said shape memory alloy element from said first shape and said second shape; and wherein when said shape memory alloy element is in said second shape, said trip device is actuated and said operating mechanism separates said separable contacts.