Abstract: A power conversion system which uses a plurality of transistors to convert DC power to AC power is made more efficient by the use of liquid refrigerant to cool the transistors. A plurality of passages are formed in a cold plate on which the transistors are mounted, and liquid refrigerant is flashed into the passages to cool the cold plate and the transistors. The liquid refrigerant can by derived from a condenser from an organic rankine cycle or a vapor compression cycle.

Abstract: A fixed filter assembly kit includes a plurality of filters with associated terminals inside a case. A booklet disclosing which filters are associated with which terminals as well as technical information about each filter is includes inside the lid. When the case lid is opened, the terminals are available to a user to perform proof of performance testing on a CATV system.

Abstract: The impeller is preferably modified to use back swept, radial or forward swept blades to accommodate relatively low, medium and high lift, respectively applications for both centrifugal compressor and turbine rotor use.

Abstract: A method for measuring the amount of fluid contained in a reaction vessel in a clinical analyzer includes the steps of adding a first aliquot of fluid to the reaction vessel and measuring the quantity of fluid contained therein. A second aliquot of fluid is then added to the reaction vessel and the quantity of fluid contained therein is also measured. Measurement of the two fluid quantities can occur with or without removal of the first aliquot in between measurements. In obtaining the two quantity measurements and comparing them against a standard, the effects of well geometry can be minimized. Preferably, a delta or ratio measurement is obtained between the first and second liquid volume measurements which can be compared against a standard so as to normalize apparent volume losses or gains due to reaction well dimensional variation. This approach enhances the analytical capability to detect true fluid delivery errors.

Abstract: A condenser coil for a refrigerated beverage and food service merchandiser includes a plurality of parallel fins or V-shaped fins between adjacent tubes. In order to reduce the likelihood of fouling by the bridging of fibers therebetween, the spacing of the fins is maintained at a distance of 0.4 to 0.8 inches apart. In one embodiment, the coil includes a plurality of flat multichannel tubes, with no fins therebetween, and the spacing between the multichannel tubes is maintained in the range of 0.4 to 0.8 inches. In one embodiment, the coil includes at least one serpentine shaped, multichannel tubes, with no fins therebetween, and the spacing between flat, parallel segments of the multichannel tubes is maintained in the range of 0.4 to 0.8 inches.

Abstract: An integrated filter connector apparatus that performs the functions of a coaxial cable connector component combined with the functions of an in-line signal conditioning component. The apparatus eliminates at least one exposed point of connection between a separate coaxial cable connector component and an in-line signal conditioning component. Elimination of such a point of connection likely reduces RF ingress into a signal path and likely reduces interference with a signal traveling through the signal path. Embodiments of the connector apparatus provide various types of connector interfaces.

Abstract: The invention relates to a sensor (1) for helium or hydrogen with a vacuum-tight housing (2), wherein a gas consuming cold cathode array (3, 4) is arranged, in addition to a selectively active passage (9) for the gas to be detected. According to the invention, in order to improve the properties of said sensor, the housing (2) is made of glass, components of the gas passage (9) include a membrane (18) made of a silicon material having the desired selective qualities, in addition to a silicon plate (19) which supports the membrane (18) and is provided with a plurality of openings (21) and a heating element (24). The housing (2) and the selectively active gas passage (9) are joined together without polymer and elastomer.