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김태훈(T. H. Kim),김주연(J. Y. Kim),김종섭(J. S. Kim),강정진(J. J. Kang),김종선(J. S. Kim),노승환(S. H. Roh) 한국소성가공학회 2009 한국소성가공학회 학술대회 논문집 Vol.2009 No.10
The recent LCD TV market has made efforts to produce thinner, brighter, and clearer products, and experienced the rapid light source replacement from a line source of light CCFL to a point source of light LED. In particular, LGP(Light Guiding Panel) among key parts composing BLU(Back Light Unit) has limits of the injection molding technology as well as the mold design, it processing and manufacturing technology so that it is hard to produce large LGP over 40 inch. To produce large light-guide panels over 40 inch under the injection molding process, a mold 3D model was developed in the design process before manufacturing a mold and structure unification was processed through CAE analysis. As a result, it was possible to construct the mold design process, and it is expected to manufacture the optimized mold by applying the mold design and manufacturing process of large-scale rapid injection-compression molding that will be produced in the future.
김홍민(H.M.Kim),이정민(J.M.Lee),강병희(B.H.Kang),목형수(H.S.Mok),최규하(G.H.Choe),김태훈(T.H.Kim),김종규(J.G.Kim) 전력전자학회 1999 전력전자학술대회 논문집 Vol.- No.-
Recent trends in sonar design have mostly required increasing power output of sonar transducer in the 'acoustics. This paper presents the power amplifier and the band pass filter for sonar system which includes sonar transducers and matching network In order to prove the validity, simulation is carried out using Pspice and Matlab.<br/> Instead of using the linear amplifier method which have several the disadvantages in driving transducer, the phase control method is applied to the power amplifier. The band pass filter is required to reduce the harmonics (ie 3rd, 5th. 7th) for the phase control method.