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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Some handheld electronic devices that require a directional pattern are equipped with directional printed antennas, along with a large ground plane. However, such an arrangement is cumbersome and expensive for small devices. The drawback inspires the invention of this novel unidirectional antenna fo.....
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The Doherty power amplifier (DPA), a component used in wireless communication devices, has two sub-amplifiers operating at different power levels. The differing bias conditions usually lead to unbalanced current driving ability and efficiency reduction. Unlike common techniques employed to achieve i.....
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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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This tool helps users verify or rectify Chinese character conversions manually by offering “batch correction” and “search and then correction”. An operation can be paused and resumed with a click of a button.
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