Abstract: Disclosed are a bismuth sodium potassium titanate-barium titanate (BNKT-BT)-based composite ceramic material with high depolarization temperature and a preparation method thereof, belonging to the technical field of piezoelectric ceramics of electronic materials. The chemical general formula of the BNKT-BT based composite ceramic material is: 0.85(Bi0.5Na0.5)TiO3-0.11(Bi0.5K0.5)TiO3-0.04BaTiO3-xZnO, where 0.1?x?0.3. The composite ceramic material takes BNKT-BT ceramics as the substrate, and single-phase ZnO is embedded in the middle of the substrate to form a 0-3 composite structure.

Abstract: An analog-to-digital converter can include: a charge distribution and holding module configured to sample a to-be-converted signal, and to perform subtraction on the to-be-converted signal and a target reference voltage by charge distribution, in order to generate a positive-phase output voltage and a negative-phase output voltage on a first and second electric rails, respectively; a common-mode voltage compensation module coupled with the first and second electric rails, and being configured to inject common-mode charges to compensate the distributed charges of the charge distribution and holding module, and to reduce a difference between a common-mode output voltage of the charge distribution and holding module and an expected value; and a comparator configured to provide a logic signal based on a comparison between the positive-phase output voltage and the negative-phase output voltage, where the logic signal corresponds to a target digital signal of the analog-to-digital converter.

Abstract: Disclosed are a bismuth sodium potassium titanate-barium titanate (BNKT-BT)-based composite ceramic material with high depolarization temperature and a preparation method thereof, belonging to the technical field of piezoelectric ceramics of electronic materials. The chemical general formula of the BNKT-BT based composite ceramic material is: 0.85(Bi0.5Na0.5)TiO3-0.11(Bi0.5K0.5)TiO3-0.04BaTiO3-xZnO, where 0.1?x?0.3. The composite ceramic material takes BNKT-BT ceramics as the substrate, and single-phase ZnO is embedded in the middle of the substrate to form a 0-3 composite structure.

Abstract: A method for positioning a display of an icon or text on a fan comprises the following steps: setting any magnetic pole in a stator to be a first magnetic pole and generating a section of a first alternation with a length longer than other alternations when a rotor is magnetized inside of the stator; setting the first alternation to be a starting position and starting displaying procedures of the icon or the text; taking the starting position as 0° and setting a delay time according to an angle of a fan leave at which the icon or the text is displayed; displaying the preset icon or text through luminous bodies. Whereby, the starting position is set depending on the generation of the first alternation, and the displaying procedure of the icon or the text is triggered to allow the fan leaves body to be rotated to a specific angle to display the preset icon or text.

Abstract: A brightness controllable luminous fan comprises a frame, a fan body with a leaves body, a stator set and a rotator set. The fan body further comprises a driving coil set installed on the surface of a fixing shaft at the center of the frame. The leaves body is pivotally connected on the fixing shaft and a magnetic ring wound around the driving coil is further installed at the inner wall face of the leaves body. The stator set is fixed at the upper end of the fixing shaft and constituted by an electromagnet set. The rotator set is fixed in the leaves body, at least one lighting controlling circuit is connected with the rotator set. Whereby, the intensity of an induction current yielded from an induction coil rotated in the magnetic field can be controlled effectively through the electromagnet set. Therefore, a high brightness of lighting effect can still be generated in the luminous bodies even if the leaves are rotated at a low speed.

Abstract: A combination type fan leaves structure comprise a upper fan leaves component and lower leaves component; the leaves of the upper and lower leaves components are interlaced to combine into a high density leaves structure. Therefore, the mold release is easier so as to be contributive to the production of the fan leaves.

Abstract: A light control structure for a cooling device comprises a hollow frame disposed with a fixing seat connected and fixed at the center of the frame through a plurality of groove strips, at least one lamp inlayed in at least one corner of the frame, a fan pivotally connected onto said fixing seat of the frame and a control circuit installed on the surface of the fixing seat for driving the fan to rotate. Whereby, wires connected with the lamps inlayed in the groove strips are allowed to connect respectively with a control circuit board disposed on the fixing seat by burying and fixing them in the groove strips. The exposition of the flexible wires of the cooling device on the surface of the frame can be prevented so as to allow the wires to be able to be commonly used in all kinds of sizes of frames.

Abstract: A fan and heat sink arrangement includes a heat sink having a circular top center opening surrounded by radiation fins thereof, and a fan, which includes a main fan body suspended above the heat sink and an auxiliary fan body axially connected to the main fan body and received in the circular top center opening of the heat sink.