摘要:
Disclosed herein is a heat dissipation device for a power conversion module. The device includes a casing, a high-heat-dissipation heat sink and a circuit board. The casing includes a heat-dissipation fin unit which has heat dissipation fins arranged at positions spaced apart from each other by predetermined intervals. The casing has a mounting space therein. The high-heat-dissipation heat sink is installed in the mounting space of the casing. The circuit board is coupled to a lower surface of the casing. Therefore, the weight and size of the heat dissipation device can be reduced. In addition, the heat sink and the casing having the heat dissipation fins dissipate heat at the same time, thus enhancing the heat dissipation efficiency. Moreover, in an optimal design, the high-heat-dissipation heat sink is located at a position corresponding to a part which generates high heat so that the heat dissipation efficiency can be maximized.
摘要:
Disclosed herein is a switching power supply including: N sub switching power supplying unit each converting a direct current (DC) power supplied from a power source into an alternate current (AC) power, boosting or bucking the AC power using a resonant circuit and a contactless transformer, converting the boosted or bucked AC power into a DC power, and outputting the converted DC power; and a balance circuit connecting between the resonant circuits of the N sub switching power supplying units to thereby allow currents to be balanced between the resonant circuits.
摘要:
Disclosed herein is a charging equipment of variable frequency control for power factor. In addition, the present invention relates to a charging equipment of variable frequency control for power factor including: an AC-DC converter converting AC power into DC power; a DC-DC converter converting DC power output from the power factor calibration circuit into DC power for charging a battery and outputting the converted DC power; and a power factor calibration circuit calibrating power factor by the operation of the switching device and outputting the calibrated power factor; and a power factor calibration circuit controller performing the switching control by varying the frequency of the pulse signal when performing a switching control by modulating a pulse width of a pulse signal on the switching devices of the power factor calibration circuit, thereby making it possible to maintain the power factor even in the light load status.
摘要:
Disclosed herein is an apparatus and method for controlling the optical output of a mobile display using a single-panel type diffractive light modulator. The apparatus includes a surrounding light amount information storage unit and an optical output adjusting means. The surrounding light amount information storage unit stores information about the amount of surrounding light. The optical output adjusting means adjusts the output values of red, green and blue light sources based on the information about the amount of surrounding light.
摘要:
Disclosed herein is a transformer having a heat radiation function. The transformer includes a pair of cores having an E-shape and facing and contacting each other to form central pillars and outer peripheral parts, a transforming coil part wound on the central pillars of the pair of cores and dropping voltage, and a heat radiation pipe formed to have a cylindrical shape and positioned inward from the transforming coil part to radiate heat generated from the transforming coil part, thereby well discharging heat generated from the coil.
摘要:
Disclosed herein is an integrated charging module device for an electric vehicle. The integrated charging module device for an electric device includes: a main battery supplying power for driving an electric vehicle; an auxiliary battery supplying power for driving an auxiliary device within the electric vehicle; an integrated charging module converting external power into a first DC voltage to be charged in the main battery and a second DC voltage to be charged in the auxiliary battery; and a control module controlling the charging of the main battery and the auxiliary battery. The present invention includes the integrated charging modules for charging the main battery and the secondary battery, thereby making it possible to increase the efficiency of the spatial arrangement in a vehicle and simplifying the cooling system.
摘要:
The present invention relates generally to a device for controlling the output of a light source unit in a single panel display system. More particularly, the present invention relates to a device for controlling the output of a light source unit in a single panel display system, which adjusts the time of application of light source driving voltage based on the output characteristics of each light source, and adjusts video data for the light source based on the adjusted time, thereby preventing a garbage image from being generated.
摘要:
Disclosed herein is a scanner profile setting apparatus for a scanning display system. The scanner profile setting apparatus includes a scanner profile setting unit, a scanning control unit, and a scanner drive circuit. The scanner profile setting unit forms a scanner profile for maintaining the linear velocity of an image, projected from the scanner onto a screen, constant.