Abstract: A heat exchanger of a sealed equipment cabinet includes a chassis, a heat-exchange module, a first fan and a second fan. The chassis includes a bottom plate having a plurality of first perforations. The heat-exchange module is disposed on the bottom plate, and defines first and second air flow channels at first and second sides of the bottom plate, respectively. The first fan is disposed on the first side of the bottom plate. The second fan is disposed on the second side of the bottom plate.

Abstract: A switch control device receives an input signal and a power signal and includes a control unit and a switch unit. The control unit has a predetermined value and receives the input signal and the power signal. When the input signal is lower than the predetermined value, the control unit outputs a control signal. The switch unit is electrically connected with the control unit, receives the control signal, and stops outputting the power signal according to the control signal.

Abstract: What is concerned is a power supply having a power status indicator, in which the power status indicator is powered by a constant voltage source, such as a constant voltage provided by an auxiliary power supply or a reference voltage provided for the internal control circuitry. Or otherwise, the power status indicator is connected in series with a feedback circuit or a protection circuit of the power supply, and the current-limiting resistor thereof is eliminated. In this way, the power consumption of the power supply under the standby mode is reduced, and the energy utilization of the power supply is enhanced.

Abstract: A transformer includes a first bobbin piece, a second bobbin piece, a first pin, a second pin and a magnetic core assembly. The first bobbin piece has a first channel therein and a covering element, and a primary winding coil is wound on the first bobbin piece. The second bobbin piece includes a first secondary side plate, a second secondary side plate, a plurality of partition plates, a wall portion, and a secondary base, and a secondary winding coil is wound on the second bobbin piece. The second pin includes a wire-arranging part, an insertion part and an intermediate part, wherein the wire-arranging part is protruded from the second secondary side plate, the intermediate part is buried in the wall portion, and the insertion part is protruded from the bottom surface of the secondary base. The magnetic core assembly is partially embedded within said first channel of said first bobbin piece and said second channel of said second bobbin piece.

Abstract: A PFC rectifier comprises a first converter having a first output capacitor and a second converter having a second output capacitor. The he first and second capacitors are coupled to each other to increase the output voltage of the PFC rectifier. Fore example the first or second output capacitors can be serially coupled to each other. At least one or both of the first or second converters comprise buck or buck-boost converters, including inverting or non-inverter buck converters. The first and second converters can also form a bi-directional ac-ac inverter.

Abstract: A light source transforming apparatus and a light source apparatus comprising the same are provided. The light source apparatus comprises at least one light source and a light source transforming apparatus. The light source transforming apparatus comprises at least one light guiding medium and color-combining medium. The light source transforming apparatus is configured to receive incident light of the at least one light source and then transform the incident light into emergent light emitted from the color-combining medium and into a light integrator, wherein a divergent angle of the incident light is larger than a divergent angle of the emergent light, and a incident area of the light source is smaller than an emergent area of the color-combining medium.

Abstract: A projection system is provided. The projection system comprises a first light source module, a second light source module, a prism module, a projection lens and a digital micromirror device (DMD). The two light source modules provide a first light beam and a second light beam according to the specific timing sequences respectively. The prism module is defined with a first reflection mechanism and a second reflection mechanism. The DMD comprises a plurality of micro mirrors. After traveling into the prism module and being reflected by the first reflection mechanism, the first light beam is emitted onto the micro mirrors. The first light beam is adapted to be reflected into the projection lens and image into the screen while the micro mirrors are at a first angle. After traveling into the prism module and being reflected by the second reflection mechanism, the second light beam is emitted onto the micro mirrors.

Abstract: A display apparatus, a control module and a method for the display apparatus are provided. The control module comprises a color sensing unit, a light sensing unit, and a processor. The color sensing unit is configured to sense and output color information of the display apparatus. The light sensing unit is configured to sense an environmental brightness and output brightness information. The processor receives the color information and the brightness information to generate a color temperature adjustment signal and a brightness adjustment signal respectively. Thereby, the display apparatus may automatically adjust the color temperature and brightness in response to the color temperature adjustment signal and the brightness adjustment signal.

Abstract: A switchable illumination system adapted to provide illumination to a device is disclosed. The switchable illumination system comprises a first light source, a second light source, a reflection module and a control module, wherein the two light sources are disposed on opposite sides of the reflection module, respectively. The reflection module is adapted to reflect the light emitted from either the first light source or the second light source to maintain normal operation of the switchable illumination system under the monitoring of the control unit.

Abstract: The configurations of a bridgeless PFC circuit system and a controlling method thereof are provided. The proposed system includes a bridgeless PFC circuit having a first and a second input terminals, a first switch having a first terminal, a first inductor having a first terminal coupled to the first input terminal and a second terminal coupled to the first terminal of the first switch, and a second inductor having a first terminal coupled to the second input terminal, a first auxiliary winding coupled to the first inductor and generating a first sensing signal, and a second auxiliary winding coupled to the second inductor and generating a second sensing signal, wherein the first and the second sensing signals are used to generate an inductor current sensing signal controlling the switching of the first switch accordingly.

Abstract: An inverter apparatus has an adaptable high-resolution voltage-to-frequency (V/f) control. The inverter apparatus receives an analog input signal and includes a first circuit, a second circuit, a third circuit, and a micro-controller unit. The first circuit processes a small-signal portion of the analog input signal with a larger voltage gain. The second and the third circuit both processes large-signal portions of the analog input signal with smaller voltage gains respectively. The three processed analog input signals of the first, the second, and the third circuits are converted into three digital output values respectively. The largest digital output value is selected by the micro-controller unit and supplied to a frequency operation unit for generating a corresponding output frequency.

Abstract: The present invention provides a case assembly structure of an electronic device. The case assembly structure includes a first case, a second case and a heat-dissipating element. The first case has an engaging hole and a first opening. The second case has an engaging element engaged with the engaging hole of the first case and a second opening aligned with the first opening of the first case. The heat-dissipating element includes a fastening hole aligned with the first opening of the first case and the second opening of the second case. The first case, the second case and the heat-dissipating element are combined together by penetrating a fastening element through the first opening, the second opening and the fastening hole.

Abstract: A conductive winding structure, the fabricating method thereof, and the magnetic device having the same are disclosed. The method for fabricating the conductive winding structure comprises steps of: (a) providing a mold; (b) performing an electroforming procedure to form a conductive layer on partial surface of the mold; and (c) stripping the conductive layer from the mold, so as to obtain the conductive winding structure.

Abstract: A fuel cell unit of a proton exchange membrane fuel cell system includes a pair of flow field plates and a membrane electrode assembly. The membrane electrode assembly is interposed between the pair of flow field plates to define respective reactant flow channels with the pair of flow field plates. The membrane electrode assembly includes an anode catalyst layer, a cathode catalyst layer, a proton exchange membrane and a pair of gas diffusion layers. The gas diffusion layers are respectively disposed adjacent to the anode catalyst layer and the cathode catalyst layer and face to the flow field plates. At least one of the gas diffusion layers has a fluid permeability distribution profile increasing first and then decreasing from an inlet to an outlet of the reactant flow channel. The gas diffusion layer has the maximum fluid permeability at the site with the highest rate of reaction.

Abstract: An electroluminescent device includes a conduction substrate, a reflection layer, a patterned transparent conduction layer, at least one light emitting diode (LED) element, a first contact electrode and a second contact electrode. The reflection layer is disposed on the conduction substrate, and the patterned transparent conduction layer is formed on the reflection layer. The LED element is formed on the patterned transparent conduction layer, and the LED element includes a first semiconductor layer, a light emitting layer and a second semiconductor layer in sequence. The second semiconductor layer is disposed on the patterned transparent conduction layer and the reflection layer. The first contact electrode is disposed at one side of the first semiconductor layer, and the second contact electrode is disposed at one side of the conduction substrate.

Abstract: An intelligent power supply apparatus includes a power converting circuit, one or more sensors, an audio processor, an operating status processor, a storage unit and a loudspeaker. The power converting circuit is used for converting an input voltage into a regulated DC output voltage. The sensors detect operating statuses of the intelligent power supply apparatus, thereby generating corresponding sensing signals. The audio data are processed by the audio processor. The operating status processor is electrically connected to the sensors and the audio processor for controlling the audio processor to generate corresponding output audio signals in response to the sensing signals. The storage unit is electrically connected to the audio processor and/or the operating status processor for storing therein audio data. The loudspeaker is electrically connected to the audio processor for generating audio prompts corresponding to the output audio signals.

Abstract: A motor control apparatus and a motor control method determine whether the motor is in a back-pressure area so as to provide different rotation-speed control signals. When the fan is in the low duty cycle, a first circuit loop is switched on, so that the fan has more accurate rotation speed. When the fan is in the high duty cycle, a second circuit loop is switched on, so that the rotation speed of fan does not be limited to a constant rotation-speed as the fan enters the back-pressure area. Thus, the fan has larger airflow quantity and higher airflow pressure.

Abstract: A motor control apparatus includes a sensing module, a phase modulating module, a duty cycle modulating module and a driving module. The sensing module detects a motor to generate a sensing signal. The phase modulating module receives the sensing signal and generates a phase modulation signal in accordance with the sensing signal. The duty cycle modulating module receives the phase modulation signal and generates a duty cycle modulation signal in accordance with the phase modulation signal. The driving module receives the duty cycle modulation signal and generates a motor control signal for controlling the motor in accordance with the duty cycle modulation signal.

Abstract: A fan of the present invention includes a fan housing and an impeller disposed in the fan housing. The fan housing includes a plurality of connecting elements at its air outlet. Each connecting element includes a plurality of air-guiding teeth thereon, which can guide the air to flow smoothly out from the fan housing so as to increase airflow and air pressure, and reduce the noise.

Abstract: A manufacturing method of an embedded inductor includes the steps of providing a magnetic plastic material, disposing at least one coil into a mold, and injecting or pressing the magnetic plastic material into the mold to form a magnetic body encapsulating the coil. An embedded inductor includes at least one magnetic body encapsulating the coil by injecting molding or pressing molding.