Abstract: A computerized simulation validating method for a full-scale distribution network single phase-to-ground fault test is implemented by simulating a full-scale test system with external quantities being controlled to be conformant and validating the full-scale distribution network single phase-to-ground fault test based on a conformance check result between the internal quantities of the field testing and the internal quantities of the simulation testing. The simulation validating method for a full-scale distribution network single phase-to-ground fault test improves normalization and conformance of the full-scale distribution network ground fault test. The computerized simulation validating system, apparatus, and medium for a full-scale distribution network single phase-to-ground fault test also achieve the benefits noted above.

Abstract: An acoustic resonator that has a first electrode with a first planar portion. A second electrode having a second planar portion is disposed parallel to the first planar portion. This second electrode has a bifurcated end that defines a gap. A piezoelectric layer is disposed between and contacts both the first planar portion and the second planar portion. Also contacting the piezoelectric layer is the bifurcated end of the second electrode. The gap is formed in the periphery of each resonator within a filter. It is formed in the top electrode, that is typically formed of molybdenum, but could be formed from other metals as well. Unlike a gap between a top electrode and piezoelectric material, the gap recited herein is entirely within the second electrode. This structure is compatible with an inner passivation layer that enables a single crystal piezoelectric layer and a larger bottom electrode.

Abstract: A waterproof unmanned aerial vehicle includes an airframe, a first gasket, and a breathability member. The airframe includes an upper cover, a below cover assembled to the upper cover, and a receiving room. The upper cover includes a first protruding portion projecting from a bottom surface of the upper cover and a plurality of breathable holes in communication with the receiving room. The below cover defines a first receiving groove located in a top surface of the below cover. The first gasket is received in the first receiving groove, and the first protruding portion presses the first gasket to seal the upper cover and the below cover. The at least one breathability member includes a waterproof film covering the plurality of breathable holes to prevent water seep into the airframe and a fixing cover to fix the waterproof film on the upper cover.