Abstract: A variable inductor which comprises a primary conductor, first and second secondary conductors and one or more switch. The primary conductor has a first node and a second node, wherein the first node is used to connect a first external component and the second node is used to connect a second external component. The first and second secondary conductors magnetically couple to the primary conductor. The one or more switch has two sides connected to the first or second secondary conductor, respectively. The first and second secondary conductors are formed a single-loop structure with two or more changeable current paths which are operated by the states of the one or more switch. An integrated circuit using the variable inductor is also introduced.

Abstract: The present invention relates to a method for improving adhesion between ceramic and a thick film circuit. The method is particularly directed to accelerate the formation of a ceramic-metal eutectic phase between the ceramic carrier and the metal circuit by solid-phase diffusion bonding under a positive atmosphere. A metallic conductive slurry or its oxide slurry is printed on the surface of the ceramic carrier to form a circuit pattern by a thick film screen printing. The ceramic carrier is placed in an oven with temperature controlled by a program under a positive-pressure atmosphere of an inert gas including nitrogen, hydrogen or their mixtures. An eutectic phase is formed between the ceramic carrier and the metal circuit under a high temperature eutectic condition to increase the adhesion between the ceramic carrier and the thick film circuit.

Abstract: Array antenna communication system is introduced, which is a communication system that receives a location signal generated by a mobile communication apparatus and accordingly transfers a communication signal with a corresponding phase direction. The system includes an array antenna module and a beamforming circuit. The array antenna module includes a plurality of antenna units arranged in array form. The beamforming circuit is used for receiving a plurality of location signals, a plurality of phase control signals, and transferring a plurality of output signals, wherein the beamforming circuit receives the location signal and accordingly generates the corresponding control signal, and controls the corresponding antenna unit of the array antenna module, so as to enable the antenna unit to move to a position corresponding to a phase and to transfer the plurality of output signals, thereby achieving communication signal enhancement.

Abstract: A kiln including a stove, a housing, an exhaust pipe and a heat source is disclosed. The stove includes a cavity, an entry, and an air outlet. The housing includes a cover and a front plate and disposed outside of the stove, wherein the front plate is joined to a front end of the cover and disposed at a front side of the stove; the front plate and the stove are spaced apart with a gap. The exhaust pipe passes through the cover and communicates with the air outlet and an exterior of the cover. The heat source is adapted to heat the cavity. With the gap between the front plate and the stove, a thermal insulation effect capable of protecting a user from being burned is provided.

Abstract: A kiln including a stove, a combustion device, a thermometer, a flow rate regulation device, and a control device wherein the stove includes a cavity and an entry. The combustion device is disposed in the stove and includes at least one burner and an infrared ray generation assembly. The thermometer is disposed in the cavity to detect a temperature inside of the cavity. The flow rate regulation device communicates with the at least one burner and is controlled to adjust a gas flow output to the at least one burner. The control device controls the output gas flow via the flow rate regulation device based on a setting temperature and the temperature detected by the thermometer so as to keep the temperature in the cavity at a constant temperature whereby it is conducive to obtaining a good heating efficiency and a constant-temperature heating.

Abstract: A kiln including a stove and a heat source wherein the stove includes a chamber, an air guide structure, an exhaust pipe and a heat storage member. The chamber includes a cavity, an entry, and an air outlet. The air outlet is located between a top of the front section of the cavity and the entry. The air guide structure communicates with the air outlet and includes a guide plate. The exhaust pipe is disposed above the guide plate, and an exhaust channel is formed by the guide plate of the air guide structure and the exhaust pipe. The heat storage member covers an exterior of the cavity which is corresponding to the top of the front section of the cavity, and contacts the air guide structure. The heat source is disposed in the stove and adapted to heat the cavity.

Abstract: A combustion device includes at least one burner, a supporting assembly, and an infrared ray generation assembly. The at least one burner includes a flame outlet and is adapted to burn gas. The supporting assembly includes a cover plate which has an opening and a plurality of holes, wherein the opening is corresponding to the flame outlet. The infrared ray generation assembly is disposed on the supporting assembly. The infrared ray generation assembly includes an infrared ray generation mesh which includes an emission surface which is adapted to emit infrared ray and corresponding to the plurality of holes. The heating efficiency of the combustion device can be effectively increased by generating an open fire and infrared rays as well as uniform heating.

Abstract: A stove includes a stage, a stove, a housing, and an exhaust pipe is disclosed. Wherein, the stove is disposed on the stage and includes a chamber made of metal and a thermal insulation structure. The chamber includes a cavity, an entry, and an air outlet. The thermal insulation structure covers an exterior of the chamber. The housing is disposed outside of the stove and joined to the stage. An isolation space is formed between the housing and the stove. The exhaust pipe passes through the housing and communicates with the air outlet and the exterior of the housing. The heat source is adapted to heat the cavity. Whereby, a compact size kiln is realized.

Abstract: A thermal insulation structure is disposed at an exterior of a chamber of a heating device. The thermal insulation structure includes a heat conduction layer, a heat storage layer and a reflection layer. The heat conduction layer is adapted to conduct heat from the chamber to the heat storage layer. The heat storage layer is adapted to store heat. The reflection layer is adapted to reflect radiation heat back to the chamber, whereby a temperature of the chamber could be kept at a constant so as to reduce heat dissipation of the chamber.

Abstract: A kiln including a stove and a heat source wherein the stove includes a cavity, an entry, and an air outlet. The cavity includes a front section communicating with the entry, a rear section disposed away from the entry, and a middle section disposed between the front section and the rear section. A top wall surface of the front section tilts downwardly toward the entry, and a top wall surface of the rear section tilts downwardly from the middle section toward a direction away from the entry. The air outlet is located between a top of the front section and the entry. The heat source is disposed in the rear section and includes a heating assembly for generating heat. The heating assembly is located at a position higher than a half of a distance between a top and a bottom of the middle section of the cavity.

Abstract: A kiln includes a stove, a combustion device, and an exhaust pipe, wherein the stove includes a cavity, an entry, and an air outlet. The cavity includes a front section and a rear section, and a top wall surface of the front section is tilt. The air outlet is disposed between a top of the front section of the cavity and the entry. The combustion device is disposed in the rear section. The combustion device includes at least one burner, a supporting assembly, and an infrared ray generation assembly. The supporting assembly includes a cover plate having a hollow portion. The infrared ray generation assembly is mounted to the supporting assembly and located above the cover plate. The infrared ray generation assembly could be heated by the flames of the burner to generate infrared ray which passes through the hollow portion. The exhaust pipe communicates with the air outlet.

Abstract: A copper-silver dual-component metal electroplating solution includes copper methanesulfonate, silver methanesulfonate, methanesulfonic acid, chlorine ions, and water. An electroplating method for forming a copper-silver dual-component metal by using such an electroplating solution, the steps of which includes (a) contacting the copper-silver dual-component metal electroplating solution with a substrate; (b) applying an operating voltage, the current density of which is controlled to be between 0.1 and 2 ASD in order to carry out electroplating on the substrate. Therefore, the electroplating solution has environmental characteristics, such as less poisoning hazards, through the design of methanesulfonic acid and methanesulfonate electroplating solution. Also, the potential and the current are adjusted during the electroplating in order to obtain a copper-silver dual-component metal plating layer with a specific silver content.

Abstract: A modular potentiometer includes a magnetic block slide unit including a slide and a magnetic block disposed on the slide; a magnetic field sensing unit parallel to the magnetic block slide unit and including at least one Hall device and a circuit board electrically connected to the at least one Hall device, wherein the circuit board is modularized so that portions thereof are connected in series; a signal processing unit electrically connected to the magnetic field sensing unit to receive a sensing signal from the magnetic field sensing unit and thereby calculate a distance traveled by the magnetic block. Hence, due to the aforesaid segmental design, the non-contact potentiometer is easy to manufacture, mount, demount, and carry, and its manufacturing cost is reduced by modularizaton.

Abstract: A radio frequency amplifier comprises a transistor, a transformer and a variable capacitor. The transistor has an input terminal, an output terminal and a control terminal. The transformer has a first coil conductor and a second coil conductor. The first coil conductor magnetically couples to the second coil conductor. The second coil conductor connects to the control terminal. The first coil conductor connects to the input terminal. The variable capacitor connects in parallel with the second coil conductor. An integrated circuit using the radio frequency amplifier is also introduced.

Abstract: A reflective modulator which comprises a coupler, two diodes and two DC block units. The coupler has an input end used to output an output signal, an output end used to output an output signal, a first load end connected to one of the diodes and a second load end connected to another one of the diodes. The DC block units connect between the diodes and the coupler for DC blocking. A message signal is selectively inputted to both of the two DC block units for operating the state of the two diodes. The two diodes turn on when the message signal is large enough. The two diodes turn off when the message signal is not large enough. The two diodes are implemented by PIN diodes. A BPSK modulator using the reflective modulator and a quadrature modulator using the BPSK modulator is also introduced.

Abstract: A radio frequency amplifier comprises a transistor, a transformer and a variable capacitor. The transistor has an input terminal, an output terminal and a control terminal. The transformer has a first coil conductor and a second coil conductor. The first coil conductor magnetically couples to the second coil conductor. The second coil conductor connects to the control terminal. The first coil conductor connects to the input terminal. The variable capacitor connects in parallel with the second coil conductor. The radio frequency amplifier is configured to be an input or output stage of an integrated circuit. An integrated circuit using the radio frequency amplifier is also introduced.

Abstract: A baffle structure for heat dissipation, mounted on an electric vehicle on top of which a battery pack is mounted, includes a base, a plurality of baffle fins and a mask. The base is connected to the battery pack. The baffle fins are disposed on the base. The baffle fins each have a first end and a second end. The mask covers the baffle fins. The mask includes at least an air inlet and at least an air outlet which correspond in position to the first and second ends, respectively. The baffle structure guides hot air out, takes up no space inside the electric vehicle, dispenses with a need to be connected to any external cooling system, and saves electrical power supplied by the battery pack.

Abstract: A laser radar system capable of active polarization comprises a signal processing unit for sending a control signal; a laser emitting unit for emitting a first laser to a target after receiving the control signal, wherein the laser emitting unit comprises a liquid crystal polarization driver and a liquid crystal polarization component group, and the liquid crystal polarization driver controls a phase delay of the liquid crystal polarization component group to therefore change a polarized state of the first laser; and a laser receiving unit for receiving a second laser reflected off the target and analyzing polarization information of the second laser through the signal processing unit to evaluate surface characteristics of the target.

Abstract: A method of speeding up image detection, adapted to increase a speed of detecting a target image and enhance efficiency of image detection, comprises the steps of capturing an image; retrieving a plurality of characteristic points of the image; creating a region of interest (ROI) centered at the characteristic points each; creating a plurality of search point scan windows corresponding to the ROIs, respectively; calculating target hit scores of the characteristic points and the search point scan windows; comparing the target hit scores of the characteristic points and the search point scan windows to obtain an ROI most likely to have a target image; calculating centroid coordinates of the ROI by a centroid shift weight equation; and narrowing a scope of ROI search according to a location of the centroid coordinates and reducing a displacement between the search points.

Abstract: A method of producing a heterophase graphite, including the steps of (A) providing a silicon carbide single-crystal substrate; (B) placing the silicon carbide single-crystal substrate in a graphite crucible and then in a reactor to undergo an air extraction process; and (C) performing a desilicification reaction on the silicon carbide single-crystal substrate in an inert gas atmosphere to obtain 2H graphite and 3R graphite, so as to directly produce lumpy (sheetlike, crushed, particulate, and powderlike) 2H graphite and 3R graphite, and preclude secondary contamination of raw materials which might otherwise occur because of a crushing step, an oxidation step, and an acid rinsing step.