Speed sensors are customarily used to detect the speed of power electronic driven motors, but that speed sensors could render the motor drive system unreliable. However, there are very few detection devices other than speed sensors that can generate readings when the motor drives are in a resting mo.....
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A universal driving technique for light emitting diodes (LEDs) is presented. The driver can operate with lighting fixtures for fluorescent lamps without requiring the replacement of any type of ballast circuitry or modifying the existing infrastructure of a lighting network. This technology provide.....
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A surface absorption modifier is developed to treat highly absorbent aggregates, and this patent concerns the application process of the surface modifier. Traditionally, aggregates such as sand and gravels are used to produce concrete but the decrease in granite supply leads to the application of re.....
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iSA is a user-friendly yet powerful 2D structural analysis package that supports modelling with a “drawing” graphical user interface or by using template wizards for generating structurally complicated models in minutes. Also available are comprehensive databases of materials, standard or user-defin.....
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The heat-reclaim liquid-filled glazing system includes a double-pane window glazing with a water-to-water heat exchanger. Two distribution headers are connected to the heat exchanger through insulated distribution tubes attached to the two sides of the window frame. The sealed space between the glas.....
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