Abstract:
An inductor configured to be mounted on a printed circuit board is provided. The inductor may include a drum core including a cylindrical body and first and second flanges extending from opposite ends of the cylindrical body, a coil wound around the cylindrical body, a plurality of pins on which opposite ends of the coil are wound, wherein each of the plurality of pins has one end fixed to the second flange and another end configured to be fixed to the printed circuit board, and at least one projection which protrudes from the second flange and is configured to support the inductor to stand vertically on the printed circuit board.
Abstract:
A power supply apparatus is disclosed. The power supply apparatus to supply power to an electronic apparatus includes a first relay and a second relay which are turned on and off to control power supply with respect to the electronic apparatus, and a processor configured to control a switching operation of the first relay and the second relay based on at least one of a connection detection signal indicating connection of the power supply apparatus and the electronic apparatus, and a power on/off signal indicating a power on/off command with respect to the electronic apparatus.
Abstract:
An electronic apparatus including a power supply, the power supply including: first and second switches configured to perform a switching operation in response to a control signal; a transformer including a primary winding which is provided with a tap and a secondary winding to which voltage from the primary winding is induced, and configured to operate at least a portion of the primary winding to apply a voltage to the secondary winding in response to the switching operation of one of the first switch and the second switch; and a controller configured to output a control signal so that one of the first switch and the second switch can perform the switching operation in accordance with an operation mode of the electronic apparatus.
Abstract:
A light source driving apparatus and method of driving a light source are provided. The light source driving apparatus includes a light source configured to generate light, a power source configured to generate power; an inductor which is connected in series between the power source and the light source; a switch which is connected in parallel to the light source and between the inductor and the light source; and a controller configured to turn on the switch at a point of time when a resonance voltage applied between opposite terminals of the switch is zero in a resonance circuit formed by the inductor and the switch after turning off the switch.
Abstract:
An apparatus and a method for displaying an image, and an apparatus and a method for driving a light emitting device are provided. The light emitting device of the image display is controlled in accordance with a periodic signal relating to the image and a sensing signal reflecting an operating state of the light emitting device.
Abstract:
A power cable and a power adaptor including the same are disclosed. The disclosed power adaptor comprises: an adaptor body; and a cable connected to the adaptor body, wherein the cable includes a plurality of conducting wires, which are arranged to be spaced in parallel to one another, and an outer skin, made of a transparent material, surrounding the plurality of conducting wires.
Abstract:
A light source driving apparatus, a display apparatus and a driving method thereof are disclosed. The light source driving apparatus includes a tapped-inductor boost converter (TIBC) circuit, the TIBC circuit including: a switching unit configured to be turned on and off in accordance with a preset cycle; a tapped inductor configured to transfer a current from a primary side to a secondary side as the switching unit is turned on; and a snubber configured to include a clamp capacitor and clamp diode configured to clamp a voltage of the switching unit, a resonance capacitor configured to perform a resonance as being charged and discharged corresponding to a switching cycle of the switching unit, and first and second resonance diodes configured to charge and discharge the resonance capacitor. Thus, the TIBC circuit provided with the lossless snubber can prevent the voltage stress from increasing during the resonance since the voltage of the switching unit is clamped.
Abstract:
An inductor and an electronic device including the same are provided. The inductor includes: a coil in which an electric current flows; and a core that the coil is wound around, wherein the core includes a central portion that the coil is wound around; extensions extending from opposite edges of the central portions; and lateral portions extending from the extensions along the circulation path of the magnetic flux and facing the central portion with the coil disposed there between, and a first height at a first position of the extension portions on the circulation path of the magnetic flux spaced away from the edges of the central portion by a first distance which is larger than a second height at a second position on the circulation path of the magnetic spaced away from the edges of the central portion by a second distance which is longer than the first distance.
Abstract:
A display device including a display panel which displays a video signal is disclosed. The display device includes a panel driver configured to drives the display panel; a light source configured to provide light to the display panel; a light source driver configured to control the brightness of the light source in accordance with a pulse width modulation dimming signal in synchronization with a vertical sync signal; and a controller configured to receive the vertical sync signal, determine whether the frequency of the vertical sync signal is normal or abnormal, and provide the dimming signal (PWM pulses) to the light source driver in non-synchronization with the vertical sync signal during at least one frame, in response to the frequency of the vertical sync signal being abnormal.
Abstract:
An apparatus and a method for displaying an image, and an apparatus and a method for driving a light-emitting device are provided. The apparatus includes: a transient state information provider which generates and outputs image data of an input image and a timing signal for displaying the image data on a screen, and provides a transient state signal in an abnormal operation of a power source or the image input into the apparatus; a display panel which receives the image data and the timing signal and displays the image on the screen by using the image data and the timing signal; and a backlight unit (BLU) which generates a control signal for controlling a light-emitting device providing light to the display panel and adjusts a characteristic of the control signal corresponding to an abnormal operation section of the abnormal operation to be linearly changed by using the transient state signal provided from the transient state information provider in order to control the light-emitting device.